./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety/test-0504.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0504.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cddde357ab55a506b6049f3b60959cd723bf2cbfd36f7774fe3606d53024bbf3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:55:27,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:55:27,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:55:27,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:55:27,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:55:27,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:55:27,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:55:27,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:55:27,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:55:27,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:55:27,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:55:27,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:55:27,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:55:27,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:55:27,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:55:27,579 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:55:27,580 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:55:27,581 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:55:27,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:55:27,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:55:27,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:55:27,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:55:27,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:55:27,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:55:27,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:55:27,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:55:27,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:55:27,595 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:55:27,596 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:55:27,597 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:55:27,597 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:55:27,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:55:27,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:55:27,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:55:27,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:55:27,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:55:27,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:55:27,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:55:27,609 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:55:27,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:55:27,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:55:27,613 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 19:55:27,636 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:55:27,637 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:55:27,637 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:55:27,637 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:55:27,638 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:55:27,638 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:55:27,639 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:55:27,639 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:55:27,639 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:55:27,639 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:55:27,640 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:55:27,640 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:55:27,640 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:55:27,640 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:55:27,640 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:55:27,640 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:55:27,641 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:55:27,641 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:55:27,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:55:27,641 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:55:27,641 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:55:27,641 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:55:27,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:55:27,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:55:27,642 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:55:27,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:55:27,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:55:27,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:55:27,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:55:27,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:55:27,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cddde357ab55a506b6049f3b60959cd723bf2cbfd36f7774fe3606d53024bbf3 [2022-11-18 19:55:27,955 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:55:27,977 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:55:27,980 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:55:27,982 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:55:27,982 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:55:27,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/memsafety/test-0504.i [2022-11-18 19:55:28,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/data/52abbeca3/981fa411d6bc4df0b056bb36a65e699d/FLAG608fdf591 [2022-11-18 19:55:28,583 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:55:28,584 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/sv-benchmarks/c/memsafety/test-0504.i [2022-11-18 19:55:28,595 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/data/52abbeca3/981fa411d6bc4df0b056bb36a65e699d/FLAG608fdf591 [2022-11-18 19:55:28,897 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/data/52abbeca3/981fa411d6bc4df0b056bb36a65e699d [2022-11-18 19:55:28,899 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:55:28,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:55:28,907 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:55:28,907 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:55:28,911 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:55:28,912 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:55:28" (1/1) ... [2022-11-18 19:55:28,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6345bdd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:28, skipping insertion in model container [2022-11-18 19:55:28,914 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:55:28" (1/1) ... [2022-11-18 19:55:28,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:55:28,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:55:29,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:55:29,320 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:55:29,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:55:29,429 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:55:29,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:29 WrapperNode [2022-11-18 19:55:29,430 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:55:29,431 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:55:29,431 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:55:29,432 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:55:29,442 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:29" (1/1) ... [2022-11-18 19:55:29,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:29" (1/1) ... [2022-11-18 19:55:29,515 INFO L138 Inliner]: procedures = 123, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 86 [2022-11-18 19:55:29,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:55:29,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:55:29,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:55:29,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:55:29,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:29" (1/1) ... [2022-11-18 19:55:29,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:29" (1/1) ... [2022-11-18 19:55:29,539 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:29" (1/1) ... [2022-11-18 19:55:29,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:29" (1/1) ... [2022-11-18 19:55:29,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:29" (1/1) ... [2022-11-18 19:55:29,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:29" (1/1) ... [2022-11-18 19:55:29,565 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:29" (1/1) ... [2022-11-18 19:55:29,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:29" (1/1) ... [2022-11-18 19:55:29,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:55:29,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:55:29,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:55:29,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:55:29,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:29" (1/1) ... [2022-11-18 19:55:29,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:55:29,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:29,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:55:29,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:55:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:55:29,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:55:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:55:29,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:55:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:55:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:55:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:55:29,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:55:29,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:55:29,834 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:55:29,836 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:55:30,200 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:55:30,211 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:55:30,213 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 19:55:30,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:55:30 BoogieIcfgContainer [2022-11-18 19:55:30,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:55:30,227 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:55:30,227 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:55:30,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:55:30,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:55:28" (1/3) ... [2022-11-18 19:55:30,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b25f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:55:30, skipping insertion in model container [2022-11-18 19:55:30,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:55:29" (2/3) ... [2022-11-18 19:55:30,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55b25f7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:55:30, skipping insertion in model container [2022-11-18 19:55:30,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:55:30" (3/3) ... [2022-11-18 19:55:30,237 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0504.i [2022-11-18 19:55:30,258 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:55:30,258 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2022-11-18 19:55:30,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:55:30,346 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@10b3cd6f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:55:30,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-18 19:55:30,351 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 86 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:30,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:55:30,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:30,360 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 19:55:30,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:30,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:30,370 INFO L85 PathProgramCache]: Analyzing trace with hash 28780379, now seen corresponding path program 1 times [2022-11-18 19:55:30,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:30,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698415173] [2022-11-18 19:55:30,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:30,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:30,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:30,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:30,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698415173] [2022-11-18 19:55:30,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698415173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:30,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:30,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:55:30,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010088138] [2022-11-18 19:55:30,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:30,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:55:30,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:30,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:55:30,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:55:30,624 INFO L87 Difference]: Start difference. First operand has 87 states, 45 states have (on average 2.1555555555555554) internal successors, (97), 86 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:30,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:30,653 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2022-11-18 19:55:30,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:55:30,655 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 19:55:30,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:30,666 INFO L225 Difference]: With dead ends: 87 [2022-11-18 19:55:30,666 INFO L226 Difference]: Without dead ends: 85 [2022-11-18 19:55:30,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:55:30,673 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:30,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:55:30,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-18 19:55:30,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-18 19:55:30,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 44 states have (on average 2.022727272727273) internal successors, (89), 84 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:30,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2022-11-18 19:55:30,725 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 5 [2022-11-18 19:55:30,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:30,725 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2022-11-18 19:55:30,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:30,726 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2022-11-18 19:55:30,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:55:30,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:30,727 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:55:30,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:55:30,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:30,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:30,729 INFO L85 PathProgramCache]: Analyzing trace with hash 889572104, now seen corresponding path program 1 times [2022-11-18 19:55:30,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:30,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263716466] [2022-11-18 19:55:30,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:30,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:30,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:30,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263716466] [2022-11-18 19:55:30,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263716466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:30,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:30,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:55:30,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068427353] [2022-11-18 19:55:30,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:30,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:55:30,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:30,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:55:30,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:55:30,834 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:30,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:30,866 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2022-11-18 19:55:30,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:55:30,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:55:30,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:30,868 INFO L225 Difference]: With dead ends: 133 [2022-11-18 19:55:30,868 INFO L226 Difference]: Without dead ends: 133 [2022-11-18 19:55:30,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:55:30,871 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 49 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:30,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 165 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:55:30,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2022-11-18 19:55:30,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 109. [2022-11-18 19:55:30,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 68 states have (on average 2.0441176470588234) internal successors, (139), 108 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:30,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 139 transitions. [2022-11-18 19:55:30,883 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 139 transitions. Word has length 6 [2022-11-18 19:55:30,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:30,884 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 139 transitions. [2022-11-18 19:55:30,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:30,884 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 139 transitions. [2022-11-18 19:55:30,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:55:30,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:30,885 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:55:30,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:55:30,907 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:30,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:30,908 INFO L85 PathProgramCache]: Analyzing trace with hash 889571339, now seen corresponding path program 1 times [2022-11-18 19:55:30,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:30,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962759193] [2022-11-18 19:55:30,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:30,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:31,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:31,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962759193] [2022-11-18 19:55:31,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962759193] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:31,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:31,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:55:31,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659494446] [2022-11-18 19:55:31,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:31,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:55:31,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:31,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:55:31,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:55:31,051 INFO L87 Difference]: Start difference. First operand 109 states and 139 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:31,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:31,189 INFO L93 Difference]: Finished difference Result 130 states and 154 transitions. [2022-11-18 19:55:31,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:55:31,190 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:55:31,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:31,191 INFO L225 Difference]: With dead ends: 130 [2022-11-18 19:55:31,191 INFO L226 Difference]: Without dead ends: 130 [2022-11-18 19:55:31,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:55:31,193 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 74 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:31,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 64 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:31,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-11-18 19:55:31,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 101. [2022-11-18 19:55:31,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.8235294117647058) internal successors, (124), 100 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:31,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions. [2022-11-18 19:55:31,204 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 6 [2022-11-18 19:55:31,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:31,205 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions. [2022-11-18 19:55:31,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:31,206 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions. [2022-11-18 19:55:31,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:55:31,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:31,206 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:55:31,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:55:31,207 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:31,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:31,208 INFO L85 PathProgramCache]: Analyzing trace with hash 889571340, now seen corresponding path program 1 times [2022-11-18 19:55:31,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:31,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938948921] [2022-11-18 19:55:31,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:31,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:31,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:31,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938948921] [2022-11-18 19:55:31,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938948921] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:31,301 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:31,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:55:31,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315524212] [2022-11-18 19:55:31,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:31,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:55:31,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:31,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:55:31,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:55:31,304 INFO L87 Difference]: Start difference. First operand 101 states and 124 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:31,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:31,415 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2022-11-18 19:55:31,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:55:31,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:55:31,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:31,417 INFO L225 Difference]: With dead ends: 138 [2022-11-18 19:55:31,418 INFO L226 Difference]: Without dead ends: 138 [2022-11-18 19:55:31,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:55:31,419 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 47 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:31,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 102 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:31,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-18 19:55:31,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 101. [2022-11-18 19:55:31,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 73 states have (on average 1.6849315068493151) internal successors, (123), 100 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:31,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 123 transitions. [2022-11-18 19:55:31,429 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 123 transitions. Word has length 6 [2022-11-18 19:55:31,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:31,430 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 123 transitions. [2022-11-18 19:55:31,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:31,431 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 123 transitions. [2022-11-18 19:55:31,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-18 19:55:31,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:31,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:31,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:55:31,432 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:31,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:31,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1806930847, now seen corresponding path program 1 times [2022-11-18 19:55:31,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:31,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432704198] [2022-11-18 19:55:31,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:31,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:31,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:31,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432704198] [2022-11-18 19:55:31,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432704198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:31,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:31,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:55:31,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030384142] [2022-11-18 19:55:31,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:31,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:55:31,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:31,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:55:31,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:55:31,462 INFO L87 Difference]: Start difference. First operand 101 states and 123 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:31,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:31,523 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2022-11-18 19:55:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:55:31,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-18 19:55:31,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:31,527 INFO L225 Difference]: With dead ends: 103 [2022-11-18 19:55:31,527 INFO L226 Difference]: Without dead ends: 100 [2022-11-18 19:55:31,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:55:31,529 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:31,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 116 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:31,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-11-18 19:55:31,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-11-18 19:55:31,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.6805555555555556) internal successors, (121), 99 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:31,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 121 transitions. [2022-11-18 19:55:31,538 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 121 transitions. Word has length 7 [2022-11-18 19:55:31,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:31,539 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 121 transitions. [2022-11-18 19:55:31,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:31,539 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 121 transitions. [2022-11-18 19:55:31,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:55:31,540 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:31,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:31,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:55:31,541 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:31,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:31,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1857997403, now seen corresponding path program 1 times [2022-11-18 19:55:31,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:31,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340314512] [2022-11-18 19:55:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:31,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:31,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:31,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340314512] [2022-11-18 19:55:31,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340314512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:31,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:31,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:55:31,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101818674] [2022-11-18 19:55:31,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:31,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:55:31,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:31,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:55:31,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:55:31,914 INFO L87 Difference]: Start difference. First operand 100 states and 121 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:32,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:32,078 INFO L93 Difference]: Finished difference Result 126 states and 146 transitions. [2022-11-18 19:55:32,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:55:32,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 19:55:32,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:32,080 INFO L225 Difference]: With dead ends: 126 [2022-11-18 19:55:32,080 INFO L226 Difference]: Without dead ends: 126 [2022-11-18 19:55:32,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:55:32,082 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 119 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:32,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 69 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:32,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-18 19:55:32,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 92. [2022-11-18 19:55:32,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 67 states have (on average 1.5970149253731343) internal successors, (107), 91 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:32,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2022-11-18 19:55:32,088 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 15 [2022-11-18 19:55:32,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:32,089 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2022-11-18 19:55:32,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:32,089 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2022-11-18 19:55:32,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:55:32,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:32,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:32,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:55:32,091 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:32,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:32,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1763344638, now seen corresponding path program 1 times [2022-11-18 19:55:32,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:32,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673283795] [2022-11-18 19:55:32,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:32,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:32,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:32,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673283795] [2022-11-18 19:55:32,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673283795] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:32,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:32,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:55:32,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503011880] [2022-11-18 19:55:32,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:32,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:55:32,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:32,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:55:32,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:55:32,241 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:32,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:32,325 INFO L93 Difference]: Finished difference Result 88 states and 99 transitions. [2022-11-18 19:55:32,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:55:32,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:55:32,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:32,327 INFO L225 Difference]: With dead ends: 88 [2022-11-18 19:55:32,327 INFO L226 Difference]: Without dead ends: 88 [2022-11-18 19:55:32,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:55:32,329 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 14 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:32,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 84 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:32,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-11-18 19:55:32,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2022-11-18 19:55:32,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 67 states have (on average 1.4776119402985075) internal successors, (99), 87 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:32,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2022-11-18 19:55:32,348 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 16 [2022-11-18 19:55:32,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:32,348 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2022-11-18 19:55:32,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:32,349 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2022-11-18 19:55:32,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:55:32,349 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:32,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:32,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:55:32,350 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:32,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:32,351 INFO L85 PathProgramCache]: Analyzing trace with hash 1763344639, now seen corresponding path program 1 times [2022-11-18 19:55:32,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:32,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407873398] [2022-11-18 19:55:32,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:32,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:32,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:32,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:32,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407873398] [2022-11-18 19:55:32,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407873398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:32,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:32,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:55:32,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591013453] [2022-11-18 19:55:32,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:32,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:55:32,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:32,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:55:32,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:55:32,506 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:32,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:32,566 INFO L93 Difference]: Finished difference Result 84 states and 91 transitions. [2022-11-18 19:55:32,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:55:32,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:55:32,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:32,568 INFO L225 Difference]: With dead ends: 84 [2022-11-18 19:55:32,568 INFO L226 Difference]: Without dead ends: 84 [2022-11-18 19:55:32,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:55:32,569 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 10 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:32,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 89 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:32,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-18 19:55:32,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-18 19:55:32,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 67 states have (on average 1.3582089552238805) internal successors, (91), 83 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:32,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2022-11-18 19:55:32,578 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 16 [2022-11-18 19:55:32,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:32,578 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2022-11-18 19:55:32,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:32,579 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2022-11-18 19:55:32,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:55:32,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:32,579 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:32,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:55:32,580 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:32,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:32,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1967864768, now seen corresponding path program 1 times [2022-11-18 19:55:32,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:32,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649304704] [2022-11-18 19:55:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:32,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:32,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:32,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:32,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649304704] [2022-11-18 19:55:32,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649304704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:32,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:32,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:55:32,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007106231] [2022-11-18 19:55:32,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:32,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:55:32,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:32,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:55:32,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:55:32,659 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:32,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:32,812 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2022-11-18 19:55:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:55:32,814 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:55:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:32,815 INFO L225 Difference]: With dead ends: 114 [2022-11-18 19:55:32,815 INFO L226 Difference]: Without dead ends: 114 [2022-11-18 19:55:32,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:55:32,818 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 83 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:32,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 84 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:32,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-18 19:55:32,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 86. [2022-11-18 19:55:32,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 69 states have (on average 1.3768115942028984) internal successors, (95), 85 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:32,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2022-11-18 19:55:32,833 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 18 [2022-11-18 19:55:32,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:32,837 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2022-11-18 19:55:32,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:32,838 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2022-11-18 19:55:32,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 19:55:32,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:32,839 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:32,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 19:55:32,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:32,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:32,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1967864767, now seen corresponding path program 1 times [2022-11-18 19:55:32,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:32,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009749121] [2022-11-18 19:55:32,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:32,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:33,034 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:33,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:33,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009749121] [2022-11-18 19:55:33,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009749121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:33,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:33,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:55:33,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484612758] [2022-11-18 19:55:33,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:33,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:55:33,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:33,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:55:33,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:55:33,037 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:33,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:33,190 INFO L93 Difference]: Finished difference Result 153 states and 172 transitions. [2022-11-18 19:55:33,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:55:33,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-18 19:55:33,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:33,192 INFO L225 Difference]: With dead ends: 153 [2022-11-18 19:55:33,192 INFO L226 Difference]: Without dead ends: 153 [2022-11-18 19:55:33,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:55:33,193 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 72 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:33,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 118 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:33,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-18 19:55:33,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 109. [2022-11-18 19:55:33,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 92 states have (on average 1.3804347826086956) internal successors, (127), 108 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:33,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 127 transitions. [2022-11-18 19:55:33,197 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 127 transitions. Word has length 18 [2022-11-18 19:55:33,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:33,197 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 127 transitions. [2022-11-18 19:55:33,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:33,198 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 127 transitions. [2022-11-18 19:55:33,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:55:33,198 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:33,199 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:33,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 19:55:33,199 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:33,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:33,200 INFO L85 PathProgramCache]: Analyzing trace with hash -874266265, now seen corresponding path program 1 times [2022-11-18 19:55:33,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:33,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058456791] [2022-11-18 19:55:33,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:33,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:33,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:33,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:33,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058456791] [2022-11-18 19:55:33,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058456791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:33,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:33,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:55:33,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155528076] [2022-11-18 19:55:33,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:33,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:55:33,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:33,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:55:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:55:33,252 INFO L87 Difference]: Start difference. First operand 109 states and 127 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:33,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:33,325 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2022-11-18 19:55:33,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:55:33,326 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 19:55:33,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:33,327 INFO L225 Difference]: With dead ends: 113 [2022-11-18 19:55:33,327 INFO L226 Difference]: Without dead ends: 113 [2022-11-18 19:55:33,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:55:33,328 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 89 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:33,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 108 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:33,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-11-18 19:55:33,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 106. [2022-11-18 19:55:33,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 89 states have (on average 1.3258426966292134) internal successors, (118), 105 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:33,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 118 transitions. [2022-11-18 19:55:33,332 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 118 transitions. Word has length 19 [2022-11-18 19:55:33,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:33,332 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 118 transitions. [2022-11-18 19:55:33,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:33,332 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 118 transitions. [2022-11-18 19:55:33,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:55:33,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:33,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:33,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:55:33,334 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:33,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:33,334 INFO L85 PathProgramCache]: Analyzing trace with hash 55140128, now seen corresponding path program 1 times [2022-11-18 19:55:33,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:33,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129061337] [2022-11-18 19:55:33,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:33,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:33,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:33,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:33,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129061337] [2022-11-18 19:55:33,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129061337] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:33,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:33,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:55:33,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198954375] [2022-11-18 19:55:33,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:33,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:55:33,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:33,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:55:33,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:55:33,548 INFO L87 Difference]: Start difference. First operand 106 states and 118 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:33,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:33,722 INFO L93 Difference]: Finished difference Result 170 states and 187 transitions. [2022-11-18 19:55:33,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:55:33,723 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 19:55:33,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:33,724 INFO L225 Difference]: With dead ends: 170 [2022-11-18 19:55:33,724 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 19:55:33,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:55:33,725 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 45 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:33,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 183 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:33,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 19:55:33,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 120. [2022-11-18 19:55:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 103 states have (on average 1.3106796116504855) internal successors, (135), 119 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:33,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 135 transitions. [2022-11-18 19:55:33,729 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 135 transitions. Word has length 19 [2022-11-18 19:55:33,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:33,730 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 135 transitions. [2022-11-18 19:55:33,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:33,730 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 135 transitions. [2022-11-18 19:55:33,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 19:55:33,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:33,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:33,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:55:33,731 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:33,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:33,732 INFO L85 PathProgramCache]: Analyzing trace with hash 55140129, now seen corresponding path program 1 times [2022-11-18 19:55:33,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:33,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445144364] [2022-11-18 19:55:33,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:33,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:33,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:34,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:34,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445144364] [2022-11-18 19:55:34,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445144364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:34,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:34,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:55:34,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498037987] [2022-11-18 19:55:34,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:34,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:55:34,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:34,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:55:34,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:55:34,371 INFO L87 Difference]: Start difference. First operand 120 states and 135 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:34,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:34,863 INFO L93 Difference]: Finished difference Result 184 states and 199 transitions. [2022-11-18 19:55:34,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:55:34,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 19:55:34,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:34,865 INFO L225 Difference]: With dead ends: 184 [2022-11-18 19:55:34,865 INFO L226 Difference]: Without dead ends: 184 [2022-11-18 19:55:34,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-11-18 19:55:34,866 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 175 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:34,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 195 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:55:34,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-11-18 19:55:34,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 120. [2022-11-18 19:55:34,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 103 states have (on average 1.2912621359223302) internal successors, (133), 119 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:34,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2022-11-18 19:55:34,870 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 19 [2022-11-18 19:55:34,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:34,870 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2022-11-18 19:55:34,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2022-11-18 19:55:34,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 19:55:34,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:34,871 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:34,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:55:34,871 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:34,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:34,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1332429407, now seen corresponding path program 1 times [2022-11-18 19:55:34,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:34,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209962579] [2022-11-18 19:55:34,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:34,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:34,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:55:34,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:34,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209962579] [2022-11-18 19:55:34,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209962579] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:34,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:34,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:55:34,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42007007] [2022-11-18 19:55:34,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:34,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:55:34,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:34,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:55:34,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:55:34,951 INFO L87 Difference]: Start difference. First operand 120 states and 133 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:35,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:35,042 INFO L93 Difference]: Finished difference Result 135 states and 149 transitions. [2022-11-18 19:55:35,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:55:35,043 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 19:55:35,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:35,044 INFO L225 Difference]: With dead ends: 135 [2022-11-18 19:55:35,044 INFO L226 Difference]: Without dead ends: 135 [2022-11-18 19:55:35,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:55:35,045 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 21 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:35,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 98 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:35,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-11-18 19:55:35,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 123. [2022-11-18 19:55:35,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 107 states have (on average 1.2990654205607477) internal successors, (139), 122 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:35,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 139 transitions. [2022-11-18 19:55:35,052 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 139 transitions. Word has length 20 [2022-11-18 19:55:35,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:35,053 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 139 transitions. [2022-11-18 19:55:35,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:35,053 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 139 transitions. [2022-11-18 19:55:35,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 19:55:35,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:35,055 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:35,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:55:35,056 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:35,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:35,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1332429406, now seen corresponding path program 1 times [2022-11-18 19:55:35,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:35,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895631927] [2022-11-18 19:55:35,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:35,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:35,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:35,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:35,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895631927] [2022-11-18 19:55:35,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895631927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:35,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:35,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:55:35,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690338737] [2022-11-18 19:55:35,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:35,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:55:35,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:35,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:55:35,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:55:35,229 INFO L87 Difference]: Start difference. First operand 123 states and 139 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:35,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:35,434 INFO L93 Difference]: Finished difference Result 194 states and 217 transitions. [2022-11-18 19:55:35,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:55:35,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 19:55:35,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:35,435 INFO L225 Difference]: With dead ends: 194 [2022-11-18 19:55:35,435 INFO L226 Difference]: Without dead ends: 194 [2022-11-18 19:55:35,435 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:35,436 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 111 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:35,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 132 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:55:35,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-11-18 19:55:35,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 135. [2022-11-18 19:55:35,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 119 states have (on average 1.3277310924369747) internal successors, (158), 134 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:35,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 158 transitions. [2022-11-18 19:55:35,440 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 158 transitions. Word has length 20 [2022-11-18 19:55:35,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:35,440 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 158 transitions. [2022-11-18 19:55:35,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:35,441 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 158 transitions. [2022-11-18 19:55:35,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:55:35,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:35,441 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:35,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:55:35,441 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:35,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:35,442 INFO L85 PathProgramCache]: Analyzing trace with hash -316635569, now seen corresponding path program 1 times [2022-11-18 19:55:35,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:35,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614791654] [2022-11-18 19:55:35,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:35,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:35,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:35,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:35,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614791654] [2022-11-18 19:55:35,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614791654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:35,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:35,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:35,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650761259] [2022-11-18 19:55:35,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:35,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:55:35,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:35,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:55:35,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:35,700 INFO L87 Difference]: Start difference. First operand 135 states and 158 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:35,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:35,979 INFO L93 Difference]: Finished difference Result 200 states and 231 transitions. [2022-11-18 19:55:35,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:55:35,979 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:55:35,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:35,980 INFO L225 Difference]: With dead ends: 200 [2022-11-18 19:55:35,981 INFO L226 Difference]: Without dead ends: 200 [2022-11-18 19:55:35,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:55:35,981 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 87 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:35,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 225 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:55:35,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-18 19:55:35,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 144. [2022-11-18 19:55:35,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 128 states have (on average 1.328125) internal successors, (170), 143 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 170 transitions. [2022-11-18 19:55:35,986 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 170 transitions. Word has length 23 [2022-11-18 19:55:35,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:35,986 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 170 transitions. [2022-11-18 19:55:35,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 8 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 170 transitions. [2022-11-18 19:55:35,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:55:35,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:35,987 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:35,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:55:35,988 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:35,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:35,988 INFO L85 PathProgramCache]: Analyzing trace with hash -316635568, now seen corresponding path program 1 times [2022-11-18 19:55:35,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:35,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816175601] [2022-11-18 19:55:35,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:35,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:36,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:36,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:36,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816175601] [2022-11-18 19:55:36,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816175601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:36,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:36,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:36,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765324227] [2022-11-18 19:55:36,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:36,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:36,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:36,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:36,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:36,292 INFO L87 Difference]: Start difference. First operand 144 states and 170 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:36,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:36,567 INFO L93 Difference]: Finished difference Result 195 states and 225 transitions. [2022-11-18 19:55:36,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:55:36,568 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:55:36,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:36,570 INFO L225 Difference]: With dead ends: 195 [2022-11-18 19:55:36,570 INFO L226 Difference]: Without dead ends: 195 [2022-11-18 19:55:36,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:55:36,572 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 95 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:36,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 236 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:55:36,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-18 19:55:36,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 143. [2022-11-18 19:55:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 127 states have (on average 1.31496062992126) internal successors, (167), 142 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:36,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 167 transitions. [2022-11-18 19:55:36,580 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 167 transitions. Word has length 23 [2022-11-18 19:55:36,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:36,580 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 167 transitions. [2022-11-18 19:55:36,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:36,580 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 167 transitions. [2022-11-18 19:55:36,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 19:55:36,582 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:36,583 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:36,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 19:55:36,583 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:36,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:36,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1225769432, now seen corresponding path program 1 times [2022-11-18 19:55:36,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:36,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270123632] [2022-11-18 19:55:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:36,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:36,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:36,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:36,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270123632] [2022-11-18 19:55:36,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270123632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:36,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:36,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:55:36,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519103799] [2022-11-18 19:55:36,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:36,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:55:36,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:36,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:55:36,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:55:36,698 INFO L87 Difference]: Start difference. First operand 143 states and 167 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:36,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:36,840 INFO L93 Difference]: Finished difference Result 167 states and 191 transitions. [2022-11-18 19:55:36,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:55:36,840 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 19:55:36,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:36,841 INFO L225 Difference]: With dead ends: 167 [2022-11-18 19:55:36,841 INFO L226 Difference]: Without dead ends: 167 [2022-11-18 19:55:36,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:36,842 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 113 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:36,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 148 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:36,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-18 19:55:36,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2022-11-18 19:55:36,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 141 states have (on average 1.3546099290780143) internal successors, (191), 156 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:36,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 191 transitions. [2022-11-18 19:55:36,846 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 191 transitions. Word has length 24 [2022-11-18 19:55:36,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:36,847 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 191 transitions. [2022-11-18 19:55:36,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:36,848 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 191 transitions. [2022-11-18 19:55:36,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 19:55:36,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:36,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:36,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 19:55:36,849 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:36,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:36,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1085033438, now seen corresponding path program 1 times [2022-11-18 19:55:36,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:36,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087204988] [2022-11-18 19:55:36,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:36,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:37,260 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:37,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:37,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087204988] [2022-11-18 19:55:37,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087204988] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:37,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988595560] [2022-11-18 19:55:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:37,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:37,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:37,267 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:37,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:55:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:37,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-18 19:55:37,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:37,486 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:55:37,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:55:37,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:55:37,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:55:37,610 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:37,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:55:37,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:37,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:55:37,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:55:37,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:55:37,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:55:37,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:55:37,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:55:37,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:55:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:37,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:38,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:38,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988595560] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:38,068 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:38,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 9 [2022-11-18 19:55:38,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741598157] [2022-11-18 19:55:38,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:38,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:55:38,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:38,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:55:38,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:55:38,071 INFO L87 Difference]: Start difference. First operand 157 states and 191 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:38,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:38,321 INFO L93 Difference]: Finished difference Result 186 states and 218 transitions. [2022-11-18 19:55:38,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:55:38,322 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 19:55:38,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:38,323 INFO L225 Difference]: With dead ends: 186 [2022-11-18 19:55:38,323 INFO L226 Difference]: Without dead ends: 186 [2022-11-18 19:55:38,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:55:38,324 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 227 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:38,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 267 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:55:38,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-18 19:55:38,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 161. [2022-11-18 19:55:38,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 145 states have (on average 1.3448275862068966) internal successors, (195), 160 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:38,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 195 transitions. [2022-11-18 19:55:38,328 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 195 transitions. Word has length 27 [2022-11-18 19:55:38,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:38,328 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 195 transitions. [2022-11-18 19:55:38,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 9 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:38,329 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 195 transitions. [2022-11-18 19:55:38,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 19:55:38,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:38,329 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-18 19:55:38,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:38,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:38,536 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:38,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:38,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2078846143, now seen corresponding path program 1 times [2022-11-18 19:55:38,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:38,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59267780] [2022-11-18 19:55:38,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:38,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:38,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:38,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:38,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:38,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59267780] [2022-11-18 19:55:38,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59267780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:38,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072392001] [2022-11-18 19:55:38,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:38,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:38,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:38,732 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:38,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:55:38,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:38,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 19:55:38,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:38,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:55:38,931 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:55:38,931 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 19:55:38,966 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:38,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:39,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072392001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:39,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:39,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2022-11-18 19:55:39,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982698374] [2022-11-18 19:55:39,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:39,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:55:39,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:39,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:55:39,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:55:39,161 INFO L87 Difference]: Start difference. First operand 161 states and 195 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:39,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:39,295 INFO L93 Difference]: Finished difference Result 181 states and 214 transitions. [2022-11-18 19:55:39,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:55:39,296 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 19:55:39,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:39,297 INFO L225 Difference]: With dead ends: 181 [2022-11-18 19:55:39,297 INFO L226 Difference]: Without dead ends: 181 [2022-11-18 19:55:39,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:39,299 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 138 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:39,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 141 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 47 Unchecked, 0.1s Time] [2022-11-18 19:55:39,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-11-18 19:55:39,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 160. [2022-11-18 19:55:39,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 145 states have (on average 1.3310344827586207) internal successors, (193), 159 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:39,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 193 transitions. [2022-11-18 19:55:39,310 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 193 transitions. Word has length 27 [2022-11-18 19:55:39,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:39,310 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 193 transitions. [2022-11-18 19:55:39,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:39,311 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 193 transitions. [2022-11-18 19:55:39,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 19:55:39,311 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:39,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-18 19:55:39,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:39,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:39,519 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:39,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:39,519 INFO L85 PathProgramCache]: Analyzing trace with hash 2078846144, now seen corresponding path program 1 times [2022-11-18 19:55:39,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:39,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441663578] [2022-11-18 19:55:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:39,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:39,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:39,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:39,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441663578] [2022-11-18 19:55:39,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441663578] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:39,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577629287] [2022-11-18 19:55:39,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:39,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:39,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:39,724 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:39,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 19:55:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:39,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:55:39,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:39,913 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:55:40,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:40,041 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:40,055 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:55:40,055 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:55:40,118 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:40,119 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:40,458 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-11-18 19:55:40,518 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:40,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577629287] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:40,518 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:40,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2022-11-18 19:55:40,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809300368] [2022-11-18 19:55:40,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:40,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:55:40,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:40,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:55:40,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:55:40,520 INFO L87 Difference]: Start difference. First operand 160 states and 193 transitions. Second operand has 15 states, 14 states have (on average 5.357142857142857) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:40,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:40,722 INFO L93 Difference]: Finished difference Result 180 states and 212 transitions. [2022-11-18 19:55:40,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:55:40,723 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.357142857142857) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 19:55:40,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:40,724 INFO L225 Difference]: With dead ends: 180 [2022-11-18 19:55:40,724 INFO L226 Difference]: Without dead ends: 180 [2022-11-18 19:55:40,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:55:40,725 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 327 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:40,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 198 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 155 Invalid, 0 Unknown, 62 Unchecked, 0.2s Time] [2022-11-18 19:55:40,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-11-18 19:55:40,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 159. [2022-11-18 19:55:40,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 145 states have (on average 1.3172413793103448) internal successors, (191), 158 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:40,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 191 transitions. [2022-11-18 19:55:40,729 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 191 transitions. Word has length 27 [2022-11-18 19:55:40,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:40,729 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 191 transitions. [2022-11-18 19:55:40,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.357142857142857) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:40,730 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 191 transitions. [2022-11-18 19:55:40,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 19:55:40,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:40,730 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:40,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:40,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:40,931 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:40,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:40,931 INFO L85 PathProgramCache]: Analyzing trace with hash 723701189, now seen corresponding path program 1 times [2022-11-18 19:55:40,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:40,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463762070] [2022-11-18 19:55:40,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:40,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:41,088 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:41,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:41,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463762070] [2022-11-18 19:55:41,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463762070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:41,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073253563] [2022-11-18 19:55:41,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:41,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:41,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:41,091 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:41,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 19:55:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:41,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:55:41,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:41,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:55:41,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:41,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:41,390 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_37| Int)) (or (= |c_ULTIMATE.start_main_old_#valid#1| (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_37| 0)) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_37|) 0)))) is different from false [2022-11-18 19:55:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-18 19:55:41,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073253563] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:41,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:41,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 7 [2022-11-18 19:55:41,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939327795] [2022-11-18 19:55:41,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:41,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:55:41,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:41,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:55:41,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2022-11-18 19:55:41,402 INFO L87 Difference]: Start difference. First operand 159 states and 191 transitions. Second operand has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:41,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:41,570 INFO L93 Difference]: Finished difference Result 161 states and 192 transitions. [2022-11-18 19:55:41,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:55:41,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 19:55:41,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:41,572 INFO L225 Difference]: With dead ends: 161 [2022-11-18 19:55:41,572 INFO L226 Difference]: Without dead ends: 149 [2022-11-18 19:55:41,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=77, Unknown=1, NotChecked=18, Total=132 [2022-11-18 19:55:41,573 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 17 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:41,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 228 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 98 Unchecked, 0.1s Time] [2022-11-18 19:55:41,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-11-18 19:55:41,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-11-18 19:55:41,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 135 states have (on average 1.3333333333333333) internal successors, (180), 148 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:41,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 180 transitions. [2022-11-18 19:55:41,577 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 180 transitions. Word has length 28 [2022-11-18 19:55:41,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:41,577 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 180 transitions. [2022-11-18 19:55:41,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.0) internal successors, (35), 8 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:41,577 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 180 transitions. [2022-11-18 19:55:41,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 19:55:41,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:41,578 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:41,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:41,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-18 19:55:41,778 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:41,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:41,779 INFO L85 PathProgramCache]: Analyzing trace with hash -28804244, now seen corresponding path program 1 times [2022-11-18 19:55:41,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:41,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445295842] [2022-11-18 19:55:41,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:41,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:42,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:42,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:42,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445295842] [2022-11-18 19:55:42,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445295842] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:42,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142523285] [2022-11-18 19:55:42,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:42,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:42,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:42,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:42,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 19:55:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:42,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 19:55:42,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:42,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:55:42,588 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:55:42,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:42,604 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:55:42,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:42,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:55:42,669 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:55:42,670 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:55:42,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:55:42,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-11-18 19:55:42,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 19:55:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:42,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:43,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-11-18 19:55:43,198 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:43,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142523285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:43,198 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:43,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 5] total 17 [2022-11-18 19:55:43,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532524187] [2022-11-18 19:55:43,200 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:43,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:55:43,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:43,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:55:43,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:55:43,203 INFO L87 Difference]: Start difference. First operand 149 states and 180 transitions. Second operand has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:43,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:43,774 INFO L93 Difference]: Finished difference Result 275 states and 335 transitions. [2022-11-18 19:55:43,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-18 19:55:43,775 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-18 19:55:43,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:43,776 INFO L225 Difference]: With dead ends: 275 [2022-11-18 19:55:43,777 INFO L226 Difference]: Without dead ends: 275 [2022-11-18 19:55:43,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-11-18 19:55:43,778 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 252 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:43,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 323 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 342 Invalid, 0 Unknown, 62 Unchecked, 0.3s Time] [2022-11-18 19:55:43,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-11-18 19:55:43,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 174. [2022-11-18 19:55:43,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 160 states have (on average 1.3) internal successors, (208), 173 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:43,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2022-11-18 19:55:43,784 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 31 [2022-11-18 19:55:43,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:43,785 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2022-11-18 19:55:43,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.235294117647059) internal successors, (72), 18 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:43,785 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2022-11-18 19:55:43,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 19:55:43,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:43,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:43,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:43,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:43,987 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:43,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:43,987 INFO L85 PathProgramCache]: Analyzing trace with hash 36474197, now seen corresponding path program 1 times [2022-11-18 19:55:43,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:43,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452248683] [2022-11-18 19:55:43,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:43,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:44,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:44,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452248683] [2022-11-18 19:55:44,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452248683] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:44,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908717609] [2022-11-18 19:55:44,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:44,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:44,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:44,303 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:44,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 19:55:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:44,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 19:55:44,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:44,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:55:44,535 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:55:44,556 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-11-18 19:55:44,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2022-11-18 19:55:44,612 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-18 19:55:44,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2022-11-18 19:55:44,657 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:55:44,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2022-11-18 19:55:44,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:44,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:44,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908717609] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:44,801 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:44,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-11-18 19:55:44,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981994470] [2022-11-18 19:55:44,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:44,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:55:44,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:44,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:55:44,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:55:44,803 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:44,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:44,986 INFO L93 Difference]: Finished difference Result 192 states and 227 transitions. [2022-11-18 19:55:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:55:44,986 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-18 19:55:44,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:44,987 INFO L225 Difference]: With dead ends: 192 [2022-11-18 19:55:44,987 INFO L226 Difference]: Without dead ends: 192 [2022-11-18 19:55:44,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:55:44,988 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 38 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:44,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 296 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 174 Invalid, 0 Unknown, 124 Unchecked, 0.1s Time] [2022-11-18 19:55:44,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-18 19:55:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 173. [2022-11-18 19:55:44,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 160 states have (on average 1.2875) internal successors, (206), 172 states have internal predecessors, (206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:44,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 206 transitions. [2022-11-18 19:55:44,993 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 206 transitions. Word has length 32 [2022-11-18 19:55:44,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:44,993 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 206 transitions. [2022-11-18 19:55:44,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.230769230769231) internal successors, (55), 14 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:44,993 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 206 transitions. [2022-11-18 19:55:44,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 19:55:44,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:44,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:45,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:45,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-18 19:55:45,212 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:45,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:45,213 INFO L85 PathProgramCache]: Analyzing trace with hash 36474198, now seen corresponding path program 1 times [2022-11-18 19:55:45,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:45,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679437354] [2022-11-18 19:55:45,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:45,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:45,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:45,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:45,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:45,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679437354] [2022-11-18 19:55:45,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679437354] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:45,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1431608001] [2022-11-18 19:55:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:45,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:45,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:45,739 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:45,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 19:55:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:45,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 19:55:45,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:45,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:55:46,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:55:46,013 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:55:46,077 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-18 19:55:46,078 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 19:55:46,084 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 19:55:46,174 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-18 19:55:46,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2022-11-18 19:55:46,194 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-18 19:55:46,195 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 30 [2022-11-18 19:55:46,276 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:55:46,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 22 [2022-11-18 19:55:46,284 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:55:46,284 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 17 [2022-11-18 19:55:46,308 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:46,308 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:50,695 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-11-18 19:55:50,825 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:50,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1431608001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:50,826 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:50,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2022-11-18 19:55:50,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964245978] [2022-11-18 19:55:50,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:50,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-18 19:55:50,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:50,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-18 19:55:50,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-11-18 19:55:50,828 INFO L87 Difference]: Start difference. First operand 173 states and 206 transitions. Second operand has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:51,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:51,556 INFO L93 Difference]: Finished difference Result 247 states and 293 transitions. [2022-11-18 19:55:51,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:55:51,557 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-18 19:55:51,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:51,558 INFO L225 Difference]: With dead ends: 247 [2022-11-18 19:55:51,558 INFO L226 Difference]: Without dead ends: 247 [2022-11-18 19:55:51,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=193, Invalid=799, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:55:51,559 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 156 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 224 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:51,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 584 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 309 Invalid, 0 Unknown, 224 Unchecked, 0.3s Time] [2022-11-18 19:55:51,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-18 19:55:51,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 164. [2022-11-18 19:55:51,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 152 states have (on average 1.2828947368421053) internal successors, (195), 163 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:51,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 195 transitions. [2022-11-18 19:55:51,564 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 195 transitions. Word has length 32 [2022-11-18 19:55:51,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:51,565 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 195 transitions. [2022-11-18 19:55:51,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.272727272727273) internal successors, (72), 23 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:51,565 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 195 transitions. [2022-11-18 19:55:51,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 19:55:51,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:51,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:51,572 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-18 19:55:51,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 19:55:51,772 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:51,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:51,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1911073267, now seen corresponding path program 1 times [2022-11-18 19:55:51,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:51,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997008967] [2022-11-18 19:55:51,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:51,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:51,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:52,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:52,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997008967] [2022-11-18 19:55:52,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997008967] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:52,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810102431] [2022-11-18 19:55:52,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:52,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:52,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:52,324 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:52,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 19:55:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:52,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:55:52,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:55:52,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:55:52,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810102431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:52,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 19:55:52,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2022-11-18 19:55:52,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165213382] [2022-11-18 19:55:52,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:52,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:55:52,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:52,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:55:52,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:55:52,614 INFO L87 Difference]: Start difference. First operand 164 states and 195 transitions. Second operand has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:52,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:52,796 INFO L93 Difference]: Finished difference Result 178 states and 201 transitions. [2022-11-18 19:55:52,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:55:52,797 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-18 19:55:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:52,798 INFO L225 Difference]: With dead ends: 178 [2022-11-18 19:55:52,798 INFO L226 Difference]: Without dead ends: 178 [2022-11-18 19:55:52,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:55:52,799 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 119 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 95 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:52,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 95 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:52,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-18 19:55:52,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 164. [2022-11-18 19:55:52,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 152 states have (on average 1.2763157894736843) internal successors, (194), 163 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:52,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 194 transitions. [2022-11-18 19:55:52,803 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 194 transitions. Word has length 33 [2022-11-18 19:55:52,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:52,803 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 194 transitions. [2022-11-18 19:55:52,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:52,803 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 194 transitions. [2022-11-18 19:55:52,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:55:52,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:52,804 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:52,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:53,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:53,005 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:53,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:53,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1302827474, now seen corresponding path program 1 times [2022-11-18 19:55:53,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:53,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205963087] [2022-11-18 19:55:53,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:53,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:55:53,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:53,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205963087] [2022-11-18 19:55:53,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205963087] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:53,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:53,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:55:53,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396838288] [2022-11-18 19:55:53,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:53,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:55:53,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:53,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:55:53,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:55:53,116 INFO L87 Difference]: Start difference. First operand 164 states and 194 transitions. Second operand has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:53,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:53,209 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2022-11-18 19:55:53,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:55:53,209 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 19:55:53,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:53,210 INFO L225 Difference]: With dead ends: 170 [2022-11-18 19:55:53,210 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 19:55:53,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:53,211 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 105 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:53,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 97 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:55:53,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 19:55:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 135. [2022-11-18 19:55:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 123 states have (on average 1.2520325203252032) internal successors, (154), 134 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 154 transitions. [2022-11-18 19:55:53,215 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 154 transitions. Word has length 36 [2022-11-18 19:55:53,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:53,215 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 154 transitions. [2022-11-18 19:55:53,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 154 transitions. [2022-11-18 19:55:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:55:53,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:53,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:53,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 19:55:53,217 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:53,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:53,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1302827524, now seen corresponding path program 1 times [2022-11-18 19:55:53,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:53,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894071258] [2022-11-18 19:55:53,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:53,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:53,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:53,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:53,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894071258] [2022-11-18 19:55:53,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894071258] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:53,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:53,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:53,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641725346] [2022-11-18 19:55:53,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:53,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:55:53,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:53,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:55:53,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:53,425 INFO L87 Difference]: Start difference. First operand 135 states and 154 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:53,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:53,718 INFO L93 Difference]: Finished difference Result 176 states and 197 transitions. [2022-11-18 19:55:53,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:55:53,719 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 19:55:53,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:53,720 INFO L225 Difference]: With dead ends: 176 [2022-11-18 19:55:53,720 INFO L226 Difference]: Without dead ends: 176 [2022-11-18 19:55:53,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:55:53,721 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 74 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:53,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 167 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:55:53,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-11-18 19:55:53,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 148. [2022-11-18 19:55:53,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 136 states have (on average 1.2647058823529411) internal successors, (172), 147 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:53,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2022-11-18 19:55:53,725 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 36 [2022-11-18 19:55:53,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:53,726 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2022-11-18 19:55:53,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:53,726 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2022-11-18 19:55:53,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:55:53,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:53,727 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:53,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 19:55:53,727 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:53,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:53,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1302827525, now seen corresponding path program 1 times [2022-11-18 19:55:53,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:53,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275702206] [2022-11-18 19:55:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:53,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:54,081 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:54,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:54,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275702206] [2022-11-18 19:55:54,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275702206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:54,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:54,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:55:54,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331734795] [2022-11-18 19:55:54,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:54,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:55:54,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:54,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:55:54,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:55:54,084 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:54,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:54,463 INFO L93 Difference]: Finished difference Result 222 states and 250 transitions. [2022-11-18 19:55:54,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:55:54,464 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 19:55:54,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:54,465 INFO L225 Difference]: With dead ends: 222 [2022-11-18 19:55:54,465 INFO L226 Difference]: Without dead ends: 222 [2022-11-18 19:55:54,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:55:54,466 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 130 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:54,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 249 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:55:54,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-18 19:55:54,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 148. [2022-11-18 19:55:54,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 136 states have (on average 1.2573529411764706) internal successors, (171), 147 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:54,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 171 transitions. [2022-11-18 19:55:54,470 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 171 transitions. Word has length 36 [2022-11-18 19:55:54,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:54,470 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 171 transitions. [2022-11-18 19:55:54,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:54,470 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 171 transitions. [2022-11-18 19:55:54,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 19:55:54,472 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:54,472 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:54,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 19:55:54,473 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:54,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:54,473 INFO L85 PathProgramCache]: Analyzing trace with hash 904979977, now seen corresponding path program 1 times [2022-11-18 19:55:54,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:54,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699026475] [2022-11-18 19:55:54,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:54,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:54,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:55,456 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:55,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:55,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699026475] [2022-11-18 19:55:55,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699026475] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:55:55,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646158991] [2022-11-18 19:55:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:55,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:55,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:55:55,467 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:55:55,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 19:55:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:55,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-18 19:55:55,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:55:55,697 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:55:55,718 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:55:55,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:55,764 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:55:55,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:55,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:55:55,876 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:55:55,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:55:55,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:55,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:55,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:55,985 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:56,007 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:56,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:55:56,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:55:56,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:55:56,222 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:55:56,268 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:56,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:55:56,308 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-11-18 19:55:56,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2022-11-18 19:55:56,382 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1787 (Array Int Int))) (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1787) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|) |c_ULTIMATE.start_main_~first~0#1.base|)) is different from false [2022-11-18 19:55:57,013 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:55:57,014 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2022-11-18 19:55:57,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2022-11-18 19:55:57,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:55:57,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 22 [2022-11-18 19:55:57,034 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:55:57,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2022-11-18 19:55:57,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 19:55:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:57,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646158991] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:55:57,090 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:55:57,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 13] total 31 [2022-11-18 19:55:57,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366537843] [2022-11-18 19:55:57,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:55:57,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 19:55:57,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:57,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 19:55:57,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=754, Unknown=20, NotChecked=56, Total=930 [2022-11-18 19:55:57,093 INFO L87 Difference]: Start difference. First operand 148 states and 171 transitions. Second operand has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:58,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:58,352 INFO L93 Difference]: Finished difference Result 197 states and 224 transitions. [2022-11-18 19:55:58,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:55:58,355 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-18 19:55:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:58,356 INFO L225 Difference]: With dead ends: 197 [2022-11-18 19:55:58,357 INFO L226 Difference]: Without dead ends: 197 [2022-11-18 19:55:58,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 347 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=286, Invalid=1678, Unknown=20, NotChecked=86, Total=2070 [2022-11-18 19:55:58,358 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 143 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 314 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:58,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 681 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 697 Invalid, 0 Unknown, 314 Unchecked, 0.6s Time] [2022-11-18 19:55:58,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-11-18 19:55:58,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 169. [2022-11-18 19:55:58,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 157 states have (on average 1.2356687898089171) internal successors, (194), 168 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:58,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 194 transitions. [2022-11-18 19:55:58,363 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 194 transitions. Word has length 38 [2022-11-18 19:55:58,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:58,364 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 194 transitions. [2022-11-18 19:55:58,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.3548387096774195) internal successors, (104), 31 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:58,364 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 194 transitions. [2022-11-18 19:55:58,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 19:55:58,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:58,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:58,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:55:58,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:55:58,575 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:58,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:58,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2113196924, now seen corresponding path program 1 times [2022-11-18 19:55:58,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:58,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702221847] [2022-11-18 19:55:58,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:58,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:58,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:58,780 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:58,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:58,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702221847] [2022-11-18 19:55:58,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702221847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:58,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:58,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:55:58,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197873741] [2022-11-18 19:55:58,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:58,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:55:58,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:58,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:55:58,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:55:58,783 INFO L87 Difference]: Start difference. First operand 169 states and 194 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:59,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:59,190 INFO L93 Difference]: Finished difference Result 286 states and 318 transitions. [2022-11-18 19:55:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:55:59,190 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-18 19:55:59,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:59,191 INFO L225 Difference]: With dead ends: 286 [2022-11-18 19:55:59,192 INFO L226 Difference]: Without dead ends: 286 [2022-11-18 19:55:59,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:55:59,193 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 292 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:59,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 417 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:55:59,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2022-11-18 19:55:59,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 171. [2022-11-18 19:55:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 159 states have (on average 1.2327044025157232) internal successors, (196), 170 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:59,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 196 transitions. [2022-11-18 19:55:59,199 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 196 transitions. Word has length 38 [2022-11-18 19:55:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:59,199 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 196 transitions. [2022-11-18 19:55:59,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:59,199 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 196 transitions. [2022-11-18 19:55:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 19:55:59,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:59,200 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:59,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 19:55:59,201 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:59,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:59,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1084595048, now seen corresponding path program 1 times [2022-11-18 19:55:59,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:59,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881103472] [2022-11-18 19:55:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:59,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:59,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:55:59,430 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:55:59,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:55:59,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881103472] [2022-11-18 19:55:59,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881103472] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:55:59,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:55:59,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:55:59,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748209994] [2022-11-18 19:55:59,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:55:59,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:55:59,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:55:59,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:55:59,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:55:59,433 INFO L87 Difference]: Start difference. First operand 171 states and 196 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:59,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:55:59,900 INFO L93 Difference]: Finished difference Result 283 states and 315 transitions. [2022-11-18 19:55:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:55:59,900 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-18 19:55:59,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:55:59,902 INFO L225 Difference]: With dead ends: 283 [2022-11-18 19:55:59,902 INFO L226 Difference]: Without dead ends: 283 [2022-11-18 19:55:59,902 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:55:59,903 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 197 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:55:59,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 347 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:55:59,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-11-18 19:55:59,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 172. [2022-11-18 19:55:59,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 160 states have (on average 1.23125) internal successors, (197), 171 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 197 transitions. [2022-11-18 19:55:59,908 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 197 transitions. Word has length 39 [2022-11-18 19:55:59,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:55:59,908 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 197 transitions. [2022-11-18 19:55:59,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:55:59,909 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 197 transitions. [2022-11-18 19:55:59,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 19:55:59,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:55:59,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:55:59,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 19:55:59,909 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:55:59,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:55:59,910 INFO L85 PathProgramCache]: Analyzing trace with hash 693362007, now seen corresponding path program 1 times [2022-11-18 19:55:59,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:55:59,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240073109] [2022-11-18 19:55:59,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:55:59,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:55:59,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:00,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:00,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240073109] [2022-11-18 19:56:00,113 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240073109] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:00,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841084523] [2022-11-18 19:56:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:00,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:00,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:00,115 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:00,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 19:56:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:00,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:56:00,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:00,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:56:00,411 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:56:00,411 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:56:00,488 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:56:00,555 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:00,556 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 16 [2022-11-18 19:56:00,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:00,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:00,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2022-11-18 19:56:00,744 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2022-11-18 19:56:00,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:00,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841084523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:00,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:00,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 20 [2022-11-18 19:56:00,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887054579] [2022-11-18 19:56:00,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:00,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:56:00,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:00,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:56:00,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:56:00,902 INFO L87 Difference]: Start difference. First operand 172 states and 197 transitions. Second operand has 20 states, 20 states have (on average 4.3) internal successors, (86), 20 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:01,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:01,724 INFO L93 Difference]: Finished difference Result 260 states and 288 transitions. [2022-11-18 19:56:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:56:01,724 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.3) internal successors, (86), 20 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-18 19:56:01,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:01,726 INFO L225 Difference]: With dead ends: 260 [2022-11-18 19:56:01,726 INFO L226 Difference]: Without dead ends: 260 [2022-11-18 19:56:01,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=175, Invalid=817, Unknown=0, NotChecked=0, Total=992 [2022-11-18 19:56:01,728 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 320 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:01,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 574 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 676 Invalid, 0 Unknown, 29 Unchecked, 0.5s Time] [2022-11-18 19:56:01,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2022-11-18 19:56:01,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 172. [2022-11-18 19:56:01,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 160 states have (on average 1.225) internal successors, (196), 171 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 196 transitions. [2022-11-18 19:56:01,733 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 196 transitions. Word has length 40 [2022-11-18 19:56:01,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:01,733 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 196 transitions. [2022-11-18 19:56:01,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.3) internal successors, (86), 20 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:01,733 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 196 transitions. [2022-11-18 19:56:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 19:56:01,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:01,734 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:01,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:01,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:01,935 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:56:01,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash 737292038, now seen corresponding path program 1 times [2022-11-18 19:56:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:01,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622061991] [2022-11-18 19:56:01,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:01,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:56:02,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:02,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622061991] [2022-11-18 19:56:02,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622061991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:56:02,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:56:02,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:56:02,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758610190] [2022-11-18 19:56:02,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:56:02,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:56:02,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:02,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:56:02,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:56:02,008 INFO L87 Difference]: Start difference. First operand 172 states and 196 transitions. Second operand has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:02,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:02,080 INFO L93 Difference]: Finished difference Result 171 states and 194 transitions. [2022-11-18 19:56:02,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:56:02,081 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-18 19:56:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:02,082 INFO L225 Difference]: With dead ends: 171 [2022-11-18 19:56:02,082 INFO L226 Difference]: Without dead ends: 171 [2022-11-18 19:56:02,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:56:02,083 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 5 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:02,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 103 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 19:56:02,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-11-18 19:56:02,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2022-11-18 19:56:02,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 160 states have (on average 1.2125) internal successors, (194), 170 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:02,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 194 transitions. [2022-11-18 19:56:02,087 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 194 transitions. Word has length 40 [2022-11-18 19:56:02,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:02,088 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 194 transitions. [2022-11-18 19:56:02,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:02,088 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 194 transitions. [2022-11-18 19:56:02,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 19:56:02,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:02,089 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:02,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 19:56:02,089 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:56:02,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:02,090 INFO L85 PathProgramCache]: Analyzing trace with hash 1696179932, now seen corresponding path program 1 times [2022-11-18 19:56:02,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:02,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293408225] [2022-11-18 19:56:02,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:02,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:02,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:02,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:02,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293408225] [2022-11-18 19:56:02,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293408225] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:02,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047493634] [2022-11-18 19:56:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:02,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:02,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:02,620 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:02,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 19:56:02,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:02,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-18 19:56:02,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:02,865 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:56:02,945 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-18 19:56:02,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-18 19:56:03,136 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:56:03,185 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:56:03,185 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 29 [2022-11-18 19:56:03,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-18 19:56:03,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2022-11-18 19:56:03,387 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:03,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:03,576 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:03,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-11-18 19:56:03,584 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:03,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2022-11-18 19:56:03,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2022-11-18 19:56:03,616 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:03,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-18 19:56:03,619 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:03,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:03,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-18 19:56:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:03,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047493634] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:03,889 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:03,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 24 [2022-11-18 19:56:03,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982689002] [2022-11-18 19:56:03,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:03,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-18 19:56:03,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:03,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-18 19:56:03,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=502, Unknown=5, NotChecked=0, Total=600 [2022-11-18 19:56:03,890 INFO L87 Difference]: Start difference. First operand 171 states and 194 transitions. Second operand has 25 states, 24 states have (on average 4.166666666666667) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:04,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:04,830 INFO L93 Difference]: Finished difference Result 255 states and 281 transitions. [2022-11-18 19:56:04,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:56:04,831 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.166666666666667) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-18 19:56:04,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:04,832 INFO L225 Difference]: With dead ends: 255 [2022-11-18 19:56:04,832 INFO L226 Difference]: Without dead ends: 255 [2022-11-18 19:56:04,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 72 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=236, Invalid=1019, Unknown=5, NotChecked=0, Total=1260 [2022-11-18 19:56:04,833 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 215 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 554 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:04,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 554 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 774 Invalid, 0 Unknown, 160 Unchecked, 0.6s Time] [2022-11-18 19:56:04,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-11-18 19:56:04,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 225. [2022-11-18 19:56:04,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 214 states have (on average 1.1962616822429906) internal successors, (256), 224 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:04,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 256 transitions. [2022-11-18 19:56:04,840 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 256 transitions. Word has length 42 [2022-11-18 19:56:04,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:04,840 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 256 transitions. [2022-11-18 19:56:04,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.166666666666667) internal successors, (100), 25 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:04,840 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 256 transitions. [2022-11-18 19:56:04,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 19:56:04,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:04,841 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:04,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:05,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-18 19:56:05,048 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:56:05,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:05,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1696179933, now seen corresponding path program 1 times [2022-11-18 19:56:05,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:05,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742961904] [2022-11-18 19:56:05,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:05,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:05,968 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:05,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:05,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742961904] [2022-11-18 19:56:05,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742961904] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:05,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012414102] [2022-11-18 19:56:05,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:05,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:05,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:05,971 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:05,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 19:56:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:06,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-18 19:56:06,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:06,255 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:56:06,329 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:56:06,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:56:06,529 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:56:06,538 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:56:06,597 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:56:06,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-18 19:56:06,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-18 19:56:06,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2022-11-18 19:56:06,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:56:06,746 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:06,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:06,885 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~first~0#1.offset| 12))) (and (forall ((v_ArrVal_2432 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2432) |c_ULTIMATE.start_main_~first~0#1.base|) .cse0) 12))) (forall ((v_ArrVal_2433 (Array Int Int)) (v_ArrVal_2432 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2432) |c_ULTIMATE.start_main_~first~0#1.base|) .cse0) 16) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2433) |c_ULTIMATE.start_main_~first~0#1.base|) .cse0)))))) is different from false [2022-11-18 19:56:06,896 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:06,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 25 [2022-11-18 19:56:06,904 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:06,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 39 [2022-11-18 19:56:06,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-18 19:56:06,937 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:06,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-18 19:56:06,946 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:06,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-18 19:56:06,951 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:06,954 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:06,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-18 19:56:06,960 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:56:06,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:06,963 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-18 19:56:07,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2022-11-18 19:56:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:07,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012414102] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:07,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:07,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2022-11-18 19:56:07,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750460728] [2022-11-18 19:56:07,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:07,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-18 19:56:07,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:07,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-18 19:56:07,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=516, Unknown=1, NotChecked=46, Total=650 [2022-11-18 19:56:07,234 INFO L87 Difference]: Start difference. First operand 225 states and 256 transitions. Second operand has 26 states, 25 states have (on average 4.44) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:08,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:08,539 INFO L93 Difference]: Finished difference Result 338 states and 381 transitions. [2022-11-18 19:56:08,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 19:56:08,540 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.44) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-18 19:56:08,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:08,541 INFO L225 Difference]: With dead ends: 338 [2022-11-18 19:56:08,541 INFO L226 Difference]: Without dead ends: 338 [2022-11-18 19:56:08,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=233, Invalid=1101, Unknown=2, NotChecked=70, Total=1406 [2022-11-18 19:56:08,542 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 259 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 244 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:08,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 910 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 803 Invalid, 0 Unknown, 244 Unchecked, 0.7s Time] [2022-11-18 19:56:08,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-11-18 19:56:08,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 236. [2022-11-18 19:56:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 225 states have (on average 1.2177777777777778) internal successors, (274), 235 states have internal predecessors, (274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 274 transitions. [2022-11-18 19:56:08,550 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 274 transitions. Word has length 42 [2022-11-18 19:56:08,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:08,550 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 274 transitions. [2022-11-18 19:56:08,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.44) internal successors, (111), 26 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:08,550 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 274 transitions. [2022-11-18 19:56:08,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 19:56:08,551 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:08,551 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:08,563 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:08,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 19:56:08,752 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:56:08,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:08,752 INFO L85 PathProgramCache]: Analyzing trace with hash -131950583, now seen corresponding path program 1 times [2022-11-18 19:56:08,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:08,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901254000] [2022-11-18 19:56:08,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:08,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:08,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:09,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:09,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901254000] [2022-11-18 19:56:09,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901254000] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:09,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018843360] [2022-11-18 19:56:09,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:09,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:09,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:09,719 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:09,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 19:56:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:09,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 79 conjunts are in the unsatisfiable core [2022-11-18 19:56:09,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:09,991 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:56:09,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:56:10,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:10,035 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:56:10,041 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:10,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:56:10,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:10,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:56:10,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:10,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:56:10,212 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:56:10,213 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-18 19:56:10,235 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:56:10,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-18 19:56:10,406 INFO L321 Elim1Store]: treesize reduction 29, result has 38.3 percent of original size [2022-11-18 19:56:10,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 48 [2022-11-18 19:56:10,433 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2022-11-18 19:56:10,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 27 treesize of output 41 [2022-11-18 19:56:10,442 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 19:56:10,457 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 19:56:10,466 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 19:56:10,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:56:10,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:10,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-18 19:56:10,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:10,578 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-18 19:56:10,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2022-11-18 19:56:10,624 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2022-11-18 19:56:10,695 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 19:56:10,696 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 34 [2022-11-18 19:56:10,713 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-18 19:56:10,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 40 [2022-11-18 19:56:11,207 INFO L321 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2022-11-18 19:56:11,207 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 67 treesize of output 57 [2022-11-18 19:56:11,232 INFO L321 Elim1Store]: treesize reduction 12, result has 58.6 percent of original size [2022-11-18 19:56:11,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 34 [2022-11-18 19:56:11,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:11,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:12,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-18 19:56:12,847 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_ULTIMATE.start_main_~y~0#1.offset| 4)) (.cse3 (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8)) (.cse4 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|))) (and (forall ((v_ArrVal_2585 Int) (v_ArrVal_2587 Int) (v_ArrVal_2581 (Array Int Int))) (= (select (select (let ((.cse0 (let ((.cse1 (store |c_#memory_$Pointer$.base| .cse4 v_ArrVal_2581))) (store .cse1 |c_ULTIMATE.start_main_~y~0#1.base| (store (store (select .cse1 |c_ULTIMATE.start_main_~y~0#1.base|) .cse2 v_ArrVal_2585) .cse3 v_ArrVal_2587))))) (store .cse0 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~y~0#1.base|))) |c_ULTIMATE.start_main_~y~0#1.base|) 0) |c_ULTIMATE.start_main_~x~0#1.base|)) (forall ((v_ArrVal_2583 Int) (v_ArrVal_2589 Int) (v_ArrVal_2580 (Array Int Int)) (v_ArrVal_2590 (Array Int Int))) (or (not (= (select v_ArrVal_2590 |c_ULTIMATE.start_main_~x~0#1.offset|) 0)) (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (store (let ((.cse5 (store |c_#memory_$Pointer$.offset| .cse4 v_ArrVal_2580))) (store .cse5 |c_ULTIMATE.start_main_~y~0#1.base| (store (store (select .cse5 |c_ULTIMATE.start_main_~y~0#1.base|) .cse2 v_ArrVal_2583) .cse3 v_ArrVal_2589))) |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2590) |c_ULTIMATE.start_main_~y~0#1.base|) 0)))))) is different from false [2022-11-18 19:56:16,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:16,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018843360] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:16,727 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:16,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 21] total 52 [2022-11-18 19:56:16,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821674278] [2022-11-18 19:56:16,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:16,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-11-18 19:56:16,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:16,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-11-18 19:56:16,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=2139, Unknown=214, NotChecked=98, Total=2652 [2022-11-18 19:56:16,730 INFO L87 Difference]: Start difference. First operand 236 states and 274 transitions. Second operand has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:23,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:23,126 INFO L93 Difference]: Finished difference Result 486 states and 582 transitions. [2022-11-18 19:56:23,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 19:56:23,127 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-11-18 19:56:23,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:23,128 INFO L225 Difference]: With dead ends: 486 [2022-11-18 19:56:23,129 INFO L226 Difference]: Without dead ends: 486 [2022-11-18 19:56:23,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 59 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1945 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=876, Invalid=7376, Unknown=308, NotChecked=182, Total=8742 [2022-11-18 19:56:23,131 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 456 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1314 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 756 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:23,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1314 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1659 Invalid, 0 Unknown, 756 Unchecked, 1.4s Time] [2022-11-18 19:56:23,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2022-11-18 19:56:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 246. [2022-11-18 19:56:23,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.2085106382978723) internal successors, (284), 245 states have internal predecessors, (284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:23,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 284 transitions. [2022-11-18 19:56:23,140 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 284 transitions. Word has length 42 [2022-11-18 19:56:23,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:23,141 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 284 transitions. [2022-11-18 19:56:23,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 2.0961538461538463) internal successors, (109), 52 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:23,141 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 284 transitions. [2022-11-18 19:56:23,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 19:56:23,142 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:23,142 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:23,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:23,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-18 19:56:23,348 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:56:23,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:23,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1041969739, now seen corresponding path program 1 times [2022-11-18 19:56:23,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:23,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944291907] [2022-11-18 19:56:23,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:23,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:23,741 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:23,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:23,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944291907] [2022-11-18 19:56:23,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944291907] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:23,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292546334] [2022-11-18 19:56:23,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:23,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:23,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:23,743 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:23,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 19:56:23,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:23,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 19:56:23,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:24,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:56:24,068 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:56:24,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:56:24,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:56:24,238 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:56:24,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 28 [2022-11-18 19:56:24,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-18 19:56:24,318 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:24,318 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:24,407 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:24,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-11-18 19:56:24,416 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:24,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2022-11-18 19:56:24,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2022-11-18 19:56:24,714 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:24,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292546334] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:24,715 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:24,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 17 [2022-11-18 19:56:24,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653976004] [2022-11-18 19:56:24,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:24,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:56:24,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:24,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:56:24,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=222, Unknown=4, NotChecked=0, Total=272 [2022-11-18 19:56:24,717 INFO L87 Difference]: Start difference. First operand 246 states and 284 transitions. Second operand has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:25,478 INFO L93 Difference]: Finished difference Result 281 states and 308 transitions. [2022-11-18 19:56:25,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:56:25,478 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-18 19:56:25,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:25,480 INFO L225 Difference]: With dead ends: 281 [2022-11-18 19:56:25,480 INFO L226 Difference]: Without dead ends: 281 [2022-11-18 19:56:25,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=533, Unknown=4, NotChecked=0, Total=702 [2022-11-18 19:56:25,481 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 268 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:25,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 669 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 620 Invalid, 0 Unknown, 125 Unchecked, 0.5s Time] [2022-11-18 19:56:25,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-11-18 19:56:25,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 246. [2022-11-18 19:56:25,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 235 states have (on average 1.2) internal successors, (282), 245 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:25,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 282 transitions. [2022-11-18 19:56:25,487 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 282 transitions. Word has length 43 [2022-11-18 19:56:25,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:25,487 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 282 transitions. [2022-11-18 19:56:25,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 4.882352941176471) internal successors, (83), 17 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 282 transitions. [2022-11-18 19:56:25,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 19:56:25,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:25,488 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:25,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:25,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-18 19:56:25,695 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:56:25,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:25,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2058655426, now seen corresponding path program 1 times [2022-11-18 19:56:25,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:25,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461237169] [2022-11-18 19:56:25,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:25,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:26,478 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:26,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:26,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461237169] [2022-11-18 19:56:26,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461237169] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:26,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419844132] [2022-11-18 19:56:26,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:26,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:26,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:26,480 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:26,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 19:56:26,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:26,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 19:56:26,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:26,739 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:56:26,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:56:26,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:56:26,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:26,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:26,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 19:56:26,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-18 19:56:26,880 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 34 [2022-11-18 19:56:26,975 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:56:26,976 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:56:27,039 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-18 19:56:27,065 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-18 19:56:27,091 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-18 19:56:27,116 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-18 19:56:27,150 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-18 19:56:27,231 INFO L321 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2022-11-18 19:56:27,231 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 28 treesize of output 30 [2022-11-18 19:56:27,306 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2022-11-18 19:56:27,369 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 19:56:27,374 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:27,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2022-11-18 19:56:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:27,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:27,497 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:27,497 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 24 [2022-11-18 19:56:28,152 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2923 (Array Int Int)) (|v_ULTIMATE.start_main_~x~0#1.base_50| Int) (v_ArrVal_2920 (Array Int Int)) (|ULTIMATE.start_main_~last~0#1.offset| Int) (v_ArrVal_2911 Int)) (or (<= 0 (select (select (store (let ((.cse0 (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_2911)) |v_ULTIMATE.start_main_~x~0#1.base_50| v_ArrVal_2920))) (store .cse0 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) (+ |ULTIMATE.start_main_~last~0#1.offset| 12) 0))) |v_ULTIMATE.start_main_~x~0#1.base_50| v_ArrVal_2923) |c_ULTIMATE.start_main_~x~0#1.base|) (+ |c_ULTIMATE.start_main_~x~0#1.offset| 12))) (not (= (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_50|) 0)))) is different from false [2022-11-18 19:56:28,218 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:28,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 39 [2022-11-18 19:56:28,226 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 76 [2022-11-18 19:56:28,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 39 [2022-11-18 19:56:28,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 19:56:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 19:56:28,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419844132] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:28,268 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:28,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 13] total 32 [2022-11-18 19:56:28,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649179034] [2022-11-18 19:56:28,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:28,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:56:28,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:28,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:56:28,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=857, Unknown=7, NotChecked=60, Total=1056 [2022-11-18 19:56:28,270 INFO L87 Difference]: Start difference. First operand 246 states and 282 transitions. Second operand has 33 states, 32 states have (on average 3.71875) internal successors, (119), 33 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:31,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:31,721 INFO L93 Difference]: Finished difference Result 469 states and 526 transitions. [2022-11-18 19:56:31,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-18 19:56:31,721 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 3.71875) internal successors, (119), 33 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-18 19:56:31,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:31,723 INFO L225 Difference]: With dead ends: 469 [2022-11-18 19:56:31,723 INFO L226 Difference]: Without dead ends: 469 [2022-11-18 19:56:31,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 77 SyntacticMatches, 16 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=1033, Invalid=4970, Unknown=7, NotChecked=152, Total=6162 [2022-11-18 19:56:31,725 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 834 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 1913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 683 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:31,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [834 Valid, 752 Invalid, 1913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1163 Invalid, 0 Unknown, 683 Unchecked, 1.0s Time] [2022-11-18 19:56:31,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-18 19:56:31,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 293. [2022-11-18 19:56:31,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 282 states have (on average 1.2304964539007093) internal successors, (347), 292 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 347 transitions. [2022-11-18 19:56:31,733 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 347 transitions. Word has length 44 [2022-11-18 19:56:31,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:31,733 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 347 transitions. [2022-11-18 19:56:31,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 3.71875) internal successors, (119), 33 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:31,733 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 347 transitions. [2022-11-18 19:56:31,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-18 19:56:31,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:31,734 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:31,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:31,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-18 19:56:31,942 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:56:31,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:31,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1393098207, now seen corresponding path program 2 times [2022-11-18 19:56:31,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:31,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101346180] [2022-11-18 19:56:31,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:31,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:32,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:32,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101346180] [2022-11-18 19:56:32,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101346180] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:32,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587533014] [2022-11-18 19:56:32,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:56:32,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:32,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:32,832 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:32,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 19:56:33,153 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:56:33,153 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:56:33,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:56:33,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:33,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:56:33,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:33,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:56:33,266 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:56:33,266 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:56:33,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:33,378 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:56:33,387 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:56:33,387 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-18 19:56:33,488 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:56:33,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:33,853 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:33,854 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 55 [2022-11-18 19:56:34,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 46 [2022-11-18 19:56:34,187 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 19:56:34,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587533014] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:34,187 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:34,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5, 5] total 19 [2022-11-18 19:56:34,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072106020] [2022-11-18 19:56:34,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:34,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-18 19:56:34,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:34,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-18 19:56:34,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:56:34,189 INFO L87 Difference]: Start difference. First operand 293 states and 347 transitions. Second operand has 20 states, 19 states have (on average 6.315789473684211) internal successors, (120), 20 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:34,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:34,761 INFO L93 Difference]: Finished difference Result 461 states and 555 transitions. [2022-11-18 19:56:34,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:56:34,762 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 6.315789473684211) internal successors, (120), 20 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2022-11-18 19:56:34,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:34,764 INFO L225 Difference]: With dead ends: 461 [2022-11-18 19:56:34,764 INFO L226 Difference]: Without dead ends: 461 [2022-11-18 19:56:34,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 85 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=266, Invalid=604, Unknown=0, NotChecked=0, Total=870 [2022-11-18 19:56:34,765 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 342 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:34,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 334 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 378 Invalid, 0 Unknown, 32 Unchecked, 0.4s Time] [2022-11-18 19:56:34,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2022-11-18 19:56:34,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 286. [2022-11-18 19:56:34,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 275 states have (on average 1.2327272727272727) internal successors, (339), 285 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:34,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 339 transitions. [2022-11-18 19:56:34,772 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 339 transitions. Word has length 44 [2022-11-18 19:56:34,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:34,773 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 339 transitions. [2022-11-18 19:56:34,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 6.315789473684211) internal successors, (120), 20 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:34,773 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 339 transitions. [2022-11-18 19:56:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 19:56:34,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:34,774 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:34,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:34,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:34,983 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:56:34,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:34,983 INFO L85 PathProgramCache]: Analyzing trace with hash 489910956, now seen corresponding path program 1 times [2022-11-18 19:56:34,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:34,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106696766] [2022-11-18 19:56:34,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:34,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:35,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:35,256 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:35,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:35,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106696766] [2022-11-18 19:56:35,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106696766] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:35,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767233870] [2022-11-18 19:56:35,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:35,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:35,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:35,258 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:35,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 19:56:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:35,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 19:56:35,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:35,827 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:56:35,828 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:35,888 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:35,889 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2022-11-18 19:56:36,152 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:56:36,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767233870] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:56:36,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:56:36,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2022-11-18 19:56:36,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949943640] [2022-11-18 19:56:36,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:56:36,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:56:36,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:56:36,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:56:36,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:56:36,154 INFO L87 Difference]: Start difference. First operand 286 states and 339 transitions. Second operand has 11 states, 10 states have (on average 11.5) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:36,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:56:36,412 INFO L93 Difference]: Finished difference Result 304 states and 358 transitions. [2022-11-18 19:56:36,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:56:36,413 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 11.5) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2022-11-18 19:56:36,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:56:36,414 INFO L225 Difference]: With dead ends: 304 [2022-11-18 19:56:36,414 INFO L226 Difference]: Without dead ends: 304 [2022-11-18 19:56:36,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:56:36,415 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 134 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:56:36,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 173 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:56:36,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-18 19:56:36,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 276. [2022-11-18 19:56:36,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 265 states have (on average 1.230188679245283) internal successors, (326), 275 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:36,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 326 transitions. [2022-11-18 19:56:36,421 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 326 transitions. Word has length 46 [2022-11-18 19:56:36,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:56:36,421 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 326 transitions. [2022-11-18 19:56:36,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 11.5) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:56:36,422 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 326 transitions. [2022-11-18 19:56:36,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 19:56:36,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:56:36,423 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:56:36,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:56:36,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:36,623 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:56:36,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:56:36,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1931630812, now seen corresponding path program 1 times [2022-11-18 19:56:36,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:56:36,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101860397] [2022-11-18 19:56:36,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:36,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:56:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:38,282 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:38,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:56:38,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101860397] [2022-11-18 19:56:38,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101860397] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:56:38,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147622970] [2022-11-18 19:56:38,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:56:38,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:56:38,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:56:38,284 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:56:38,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 19:56:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:56:38,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 338 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-18 19:56:38,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:56:38,580 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:56:38,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:56:38,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:56:38,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:56:38,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,668 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:56:38,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,680 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 19:56:38,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,748 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:38,749 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 19:56:38,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 19:56:38,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,779 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:38,780 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2022-11-18 19:56:38,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2022-11-18 19:56:38,956 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:38,995 INFO L321 Elim1Store]: treesize reduction 36, result has 49.3 percent of original size [2022-11-18 19:56:38,995 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 51 [2022-11-18 19:56:39,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:39,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:39,076 INFO L321 Elim1Store]: treesize reduction 64, result has 41.8 percent of original size [2022-11-18 19:56:39,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 62 [2022-11-18 19:56:39,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:39,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:39,827 INFO L321 Elim1Store]: treesize reduction 228, result has 24.8 percent of original size [2022-11-18 19:56:39,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 211 treesize of output 203 [2022-11-18 19:56:39,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:39,850 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:39,958 INFO L321 Elim1Store]: treesize reduction 172, result has 28.9 percent of original size [2022-11-18 19:56:39,958 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 13 case distinctions, treesize of input 194 treesize of output 205 [2022-11-18 19:56:43,531 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-18 19:56:43,531 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 378 treesize of output 354 [2022-11-18 19:56:43,570 INFO L321 Elim1Store]: treesize reduction 10, result has 64.3 percent of original size [2022-11-18 19:56:43,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 338 treesize of output 306 [2022-11-18 19:56:43,768 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:56:43,787 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 19:56:43,793 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 19:56:43,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 19:56:44,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-18 19:56:44,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 19:56:44,318 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-18 19:56:44,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:56:44,372 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:56:44,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2022-11-18 19:56:44,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:44,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:44,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-18 19:56:44,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2022-11-18 19:56:44,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-18 19:56:44,606 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-18 19:56:44,699 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:56:44,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 45 [2022-11-18 19:56:44,723 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:56:44,723 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 41 [2022-11-18 19:56:44,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:44,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:44,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 46 [2022-11-18 19:56:44,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:56:44,775 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-11-18 19:56:45,247 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:45,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 49 [2022-11-18 19:56:45,263 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:56:45,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 29 [2022-11-18 19:56:45,700 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:56:45,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:56:47,177 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 12)) (.cse4 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8#1.base|)) (.cse2 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8#1.base|)) (.cse3 (+ |c_ULTIMATE.start_main_#t~mem8#1.offset| 4))) (and (forall ((|ULTIMATE.start_main_~x~1#1.offset| Int) (v_ArrVal_3494 Int) (v_ArrVal_3493 Int)) (or (not (<= 0 |ULTIMATE.start_main_~x~1#1.offset|)) (forall ((v_ArrVal_3497 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8#1.base| (store .cse2 .cse3 v_ArrVal_3494)) |c_ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3497) |c_ULTIMATE.start_main_~x~0#1.base|))) (or (= (select .cse0 .cse1) 0) (= (select (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~x~1#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|)))) (forall ((v_ArrVal_3498 (Array Int Int)) (v_ArrVal_3501 Int)) (not (= (select (store (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8#1.base| (store .cse4 .cse3 v_ArrVal_3493)) |c_ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3498) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_3501) |ULTIMATE.start_main_~x~1#1.offset|) 0))) (not (<= |ULTIMATE.start_main_~x~1#1.offset| 0)))) (forall ((|ULTIMATE.start_main_~x~1#1.offset| Int) (v_ArrVal_3494 Int) (v_ArrVal_3493 Int)) (or (not (<= 0 |ULTIMATE.start_main_~x~1#1.offset|)) (not (<= |ULTIMATE.start_main_~x~1#1.offset| 0)) (forall ((v_ArrVal_3498 (Array Int Int)) (v_ArrVal_3501 Int)) (let ((.cse5 (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem8#1.base| (store .cse4 .cse3 v_ArrVal_3493)) |c_ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3498) |c_ULTIMATE.start_main_~x~0#1.base|))) (or (= (select .cse5 .cse1) 0) (not (= (select (store .cse5 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_3501) |ULTIMATE.start_main_~x~1#1.offset|) 0))))) (forall ((v_ArrVal_3497 (Array Int Int))) (= (select (store (select (store (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem8#1.base| (store .cse2 .cse3 v_ArrVal_3494)) |c_ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3497) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~x~1#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|)))))) is different from false [2022-11-18 19:56:47,276 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|))) (let ((.cse6 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~y~0#1.base|) |c_ULTIMATE.start_main_~y~0#1.offset|)) (.cse3 (select |c_#memory_$Pointer$.base| .cse2)) (.cse1 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 12)) (.cse5 (select |c_#memory_$Pointer$.offset| .cse2))) (and (forall ((|v_ULTIMATE.start_main_#t~mem8#1.offset_26| Int)) (or (forall ((|ULTIMATE.start_main_~x~1#1.offset| Int) (v_ArrVal_3494 Int) (v_ArrVal_3493 Int)) (let ((.cse4 (+ |v_ULTIMATE.start_main_#t~mem8#1.offset_26| 4))) (or (forall ((v_ArrVal_3497 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_$Pointer$.base| .cse2 (store .cse3 .cse4 v_ArrVal_3494)) |c_ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3497) |c_ULTIMATE.start_main_~x~0#1.base|))) (or (= (select (store .cse0 |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~x~1#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|) (= (select .cse0 .cse1) 0)))) (not (<= 0 |ULTIMATE.start_main_~x~1#1.offset|)) (forall ((v_ArrVal_3498 (Array Int Int)) (v_ArrVal_3501 Int)) (not (= (select (store (select (store (store |c_#memory_$Pointer$.offset| .cse2 (store .cse5 .cse4 v_ArrVal_3493)) |c_ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3498) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_3501) |ULTIMATE.start_main_~x~1#1.offset|) 0))) (not (<= |ULTIMATE.start_main_~x~1#1.offset| 0))))) (not (<= |v_ULTIMATE.start_main_#t~mem8#1.offset_26| .cse6)))) (forall ((|v_ULTIMATE.start_main_#t~mem8#1.offset_26| Int)) (or (not (<= |v_ULTIMATE.start_main_#t~mem8#1.offset_26| .cse6)) (forall ((|ULTIMATE.start_main_~x~1#1.offset| Int) (v_ArrVal_3494 Int) (v_ArrVal_3493 Int)) (let ((.cse7 (+ |v_ULTIMATE.start_main_#t~mem8#1.offset_26| 4))) (or (forall ((v_ArrVal_3497 (Array Int Int))) (= (select (store (select (store (store |c_#memory_$Pointer$.base| .cse2 (store .cse3 .cse7 v_ArrVal_3494)) |c_ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3497) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~x~1#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|)) (not (<= 0 |ULTIMATE.start_main_~x~1#1.offset|)) (forall ((v_ArrVal_3498 (Array Int Int)) (v_ArrVal_3501 Int)) (let ((.cse8 (select (store (store |c_#memory_$Pointer$.offset| .cse2 (store .cse5 .cse7 v_ArrVal_3493)) |c_ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3498) |c_ULTIMATE.start_main_~x~0#1.base|))) (or (= (select .cse8 .cse1) 0) (not (= (select (store .cse8 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_3501) |ULTIMATE.start_main_~x~1#1.offset|) 0))))) (not (<= |ULTIMATE.start_main_~x~1#1.offset| 0)))))))))) is different from false [2022-11-18 19:56:47,523 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 12))) (and (forall ((v_ArrVal_3487 Int)) (or (forall ((|ULTIMATE.start_main_~y~0#1.offset| Int) (|ULTIMATE.start_main_~y~0#1.base| Int) (|v_ULTIMATE.start_main_#t~mem8#1.offset_26| Int)) (or (not (<= |v_ULTIMATE.start_main_#t~mem8#1.offset_26| v_ArrVal_3487)) (forall ((|ULTIMATE.start_main_~x~1#1.offset| Int) (v_ArrVal_3494 Int) (v_ArrVal_3493 Int)) (let ((.cse1 (+ |v_ULTIMATE.start_main_#t~mem8#1.offset_26| 4))) (or (forall ((v_ArrVal_3498 (Array Int Int)) (v_ArrVal_3501 Int)) (not (= (select (store (select (store (let ((.cse0 (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~y~0#1.base| (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~y~0#1.offset| v_ArrVal_3487)))) (store .cse0 |c_ULTIMATE.start_main_#t~mem7#1.base| (store (select .cse0 |c_ULTIMATE.start_main_#t~mem7#1.base|) .cse1 v_ArrVal_3493))) |ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3498) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_3501) |ULTIMATE.start_main_~x~1#1.offset|) 0))) (not (<= 0 |ULTIMATE.start_main_~x~1#1.offset|)) (forall ((v_ArrVal_3497 (Array Int Int))) (let ((.cse2 (select (store (let ((.cse4 (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~y~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~y~0#1.offset| |c_ULTIMATE.start_main_#t~mem7#1.base|)))) (store .cse4 |c_ULTIMATE.start_main_#t~mem7#1.base| (store (select .cse4 |c_ULTIMATE.start_main_#t~mem7#1.base|) .cse1 v_ArrVal_3494))) |ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3497) |c_ULTIMATE.start_main_~x~0#1.base|))) (or (= (select .cse2 .cse3) 0) (= (select (store .cse2 |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~x~1#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|)))) (not (<= |ULTIMATE.start_main_~x~1#1.offset| 0))))))) (not (<= v_ArrVal_3487 |c_ULTIMATE.start_main_#t~mem7#1.offset|)))) (forall ((v_ArrVal_3487 Int)) (or (forall ((|ULTIMATE.start_main_~y~0#1.offset| Int) (|ULTIMATE.start_main_~y~0#1.base| Int) (|v_ULTIMATE.start_main_#t~mem8#1.offset_26| Int)) (or (not (<= |v_ULTIMATE.start_main_#t~mem8#1.offset_26| v_ArrVal_3487)) (forall ((|ULTIMATE.start_main_~x~1#1.offset| Int) (v_ArrVal_3494 Int) (v_ArrVal_3493 Int)) (let ((.cse6 (+ |v_ULTIMATE.start_main_#t~mem8#1.offset_26| 4))) (or (not (<= 0 |ULTIMATE.start_main_~x~1#1.offset|)) (forall ((v_ArrVal_3497 (Array Int Int))) (= (select (store (select (store (let ((.cse5 (store |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~y~0#1.base| (store (select |c_#memory_$Pointer$.base| |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~y~0#1.offset| |c_ULTIMATE.start_main_#t~mem7#1.base|)))) (store .cse5 |c_ULTIMATE.start_main_#t~mem7#1.base| (store (select .cse5 |c_ULTIMATE.start_main_#t~mem7#1.base|) .cse6 v_ArrVal_3494))) |ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3497) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~x~1#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|)) (forall ((v_ArrVal_3498 (Array Int Int)) (v_ArrVal_3501 Int)) (let ((.cse7 (select (store (let ((.cse8 (store |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~y~0#1.base| (store (select |c_#memory_$Pointer$.offset| |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~y~0#1.offset| v_ArrVal_3487)))) (store .cse8 |c_ULTIMATE.start_main_#t~mem7#1.base| (store (select .cse8 |c_ULTIMATE.start_main_#t~mem7#1.base|) .cse6 v_ArrVal_3493))) |ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3498) |c_ULTIMATE.start_main_~x~0#1.base|))) (or (= (select .cse7 .cse3) 0) (not (= (select (store .cse7 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_3501) |ULTIMATE.start_main_~x~1#1.offset|) 0))))) (not (<= |ULTIMATE.start_main_~x~1#1.offset| 0))))))) (not (<= v_ArrVal_3487 |c_ULTIMATE.start_main_#t~mem7#1.offset|)))))) is different from false [2022-11-18 19:57:13,352 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse12 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse4 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse9 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 12)) (.cse8 (select .cse4 |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse1 (select .cse12 |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse5 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 4)) (.cse6 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 8))) (and (forall ((v_ArrVal_3479 Int) (v_ArrVal_3501 Int) (v_ArrVal_3487 Int) (|ULTIMATE.start_main_~x~1#1.offset| Int) (v_ArrVal_3486 Int) (v_ArrVal_3483 Int) (v_ArrVal_3494 Int) (v_ArrVal_3493 Int) (v_ArrVal_3480 Int) (|ULTIMATE.start_main_~y~0#1.offset| Int) (v_ArrVal_3497 (Array Int Int)) (|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_3498 (Array Int Int)) (|v_ULTIMATE.start_main_#t~mem8#1.offset_26| Int)) (let ((.cse2 (+ |v_ULTIMATE.start_main_#t~mem8#1.offset_26| 4))) (let ((.cse7 (select (store (let ((.cse10 (let ((.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse12 .cse5 v_ArrVal_3480) .cse6 v_ArrVal_3486)))) (store .cse11 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse11 |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~y~0#1.offset| .cse1))))) (store .cse10 .cse1 (store (select .cse10 .cse1) .cse2 v_ArrVal_3494))) |ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3497) |c_ULTIMATE.start_main_~x~0#1.base|))) (or (not (= (select (store (select (store (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse4 .cse5 v_ArrVal_3479) .cse6 v_ArrVal_3483)))) (store .cse3 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse3 |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~y~0#1.offset| v_ArrVal_3487))))) (store .cse0 .cse1 (store (select .cse0 .cse1) .cse2 v_ArrVal_3493))) |ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3498) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_3501) |ULTIMATE.start_main_~x~1#1.offset|) 0)) (not (<= 0 |ULTIMATE.start_main_~x~1#1.offset|)) (= (select (store .cse7 |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~x~1#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|) (not (<= |v_ULTIMATE.start_main_#t~mem8#1.offset_26| v_ArrVal_3487)) (< .cse8 v_ArrVal_3487) (= (select .cse7 .cse9) 0) (not (<= |ULTIMATE.start_main_~x~1#1.offset| 0)))))) (forall ((v_ArrVal_3479 Int) (v_ArrVal_3501 Int) (v_ArrVal_3487 Int) (|ULTIMATE.start_main_~x~1#1.offset| Int) (v_ArrVal_3486 Int) (v_ArrVal_3483 Int) (v_ArrVal_3494 Int) (v_ArrVal_3493 Int) (v_ArrVal_3480 Int) (|ULTIMATE.start_main_~y~0#1.offset| Int) (v_ArrVal_3497 (Array Int Int)) (|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_3498 (Array Int Int)) (|v_ULTIMATE.start_main_#t~mem8#1.offset_26| Int)) (let ((.cse15 (+ |v_ULTIMATE.start_main_#t~mem8#1.offset_26| 4))) (let ((.cse13 (select (store (let ((.cse17 (let ((.cse18 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse4 .cse5 v_ArrVal_3479) .cse6 v_ArrVal_3483)))) (store .cse18 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse18 |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~y~0#1.offset| v_ArrVal_3487))))) (store .cse17 .cse1 (store (select .cse17 .cse1) .cse15 v_ArrVal_3493))) |ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3498) |c_ULTIMATE.start_main_~x~0#1.base|))) (or (not (= (select (store .cse13 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_3501) |ULTIMATE.start_main_~x~1#1.offset|) 0)) (= (select .cse13 .cse9) 0) (not (<= 0 |ULTIMATE.start_main_~x~1#1.offset|)) (= (select (store (select (store (let ((.cse14 (let ((.cse16 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse12 .cse5 v_ArrVal_3480) .cse6 v_ArrVal_3486)))) (store .cse16 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse16 |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~y~0#1.offset| .cse1))))) (store .cse14 .cse1 (store (select .cse14 .cse1) .cse15 v_ArrVal_3494))) |ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3497) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~x~1#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|) (not (<= |v_ULTIMATE.start_main_#t~mem8#1.offset_26| v_ArrVal_3487)) (< .cse8 v_ArrVal_3487) (not (<= |ULTIMATE.start_main_~x~1#1.offset| 0))))))))) is different from false [2022-11-18 19:57:18,805 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 16))) (let ((.cse8 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 12)) (.cse11 (store (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) .cse4 0) |c_ULTIMATE.start_main_~x~0#1.offset| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse3 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse5 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 4)) (.cse6 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 8))) (and (forall ((v_ArrVal_3476 Int) (v_ArrVal_3473 Int)) (or (not (<= v_ArrVal_3476 |c_ULTIMATE.start_main_~x~0#1.offset|)) (forall ((v_ArrVal_3479 Int) (v_ArrVal_3501 Int) (v_ArrVal_3487 Int) (|ULTIMATE.start_main_~x~1#1.offset| Int) (v_ArrVal_3486 Int) (v_ArrVal_3483 Int) (v_ArrVal_3494 Int) (v_ArrVal_3493 Int) (v_ArrVal_3480 Int) (|ULTIMATE.start_main_~y~0#1.offset| Int) (v_ArrVal_3497 (Array Int Int)) (|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_3498 (Array Int Int)) (|v_ULTIMATE.start_main_#t~mem8#1.offset_26| Int)) (let ((.cse1 (+ |v_ULTIMATE.start_main_#t~mem8#1.offset_26| 4))) (let ((.cse7 (select (store (let ((.cse9 (let ((.cse10 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse11 .cse5 v_ArrVal_3480) .cse6 v_ArrVal_3486)))) (store .cse10 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse10 |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~y~0#1.offset| |c_ULTIMATE.start_main_~x~0#1.base|))))) (store .cse9 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse9 |c_ULTIMATE.start_main_~x~0#1.base|) .cse1 v_ArrVal_3494))) |ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3497) |c_ULTIMATE.start_main_~x~0#1.base|))) (or (not (<= 0 |ULTIMATE.start_main_~x~1#1.offset|)) (not (= (select (store (select (store (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (store (store (store .cse3 .cse4 v_ArrVal_3473) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_3476) .cse5 v_ArrVal_3479) .cse6 v_ArrVal_3483)))) (store .cse2 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse2 |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~y~0#1.offset| v_ArrVal_3487))))) (store .cse0 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) .cse1 v_ArrVal_3493))) |ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3498) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_3501) |ULTIMATE.start_main_~x~1#1.offset|) 0)) (= (select .cse7 .cse8) 0) (not (<= |v_ULTIMATE.start_main_#t~mem8#1.offset_26| v_ArrVal_3487)) (= (select (store .cse7 |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~x~1#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|) (not (<= |ULTIMATE.start_main_~x~1#1.offset| 0)) (< v_ArrVal_3476 v_ArrVal_3487))))))) (forall ((v_ArrVal_3476 Int) (v_ArrVal_3473 Int)) (or (not (<= v_ArrVal_3476 |c_ULTIMATE.start_main_~x~0#1.offset|)) (forall ((v_ArrVal_3479 Int) (v_ArrVal_3501 Int) (v_ArrVal_3487 Int) (|ULTIMATE.start_main_~x~1#1.offset| Int) (v_ArrVal_3486 Int) (v_ArrVal_3483 Int) (v_ArrVal_3494 Int) (v_ArrVal_3493 Int) (v_ArrVal_3480 Int) (|ULTIMATE.start_main_~y~0#1.offset| Int) (v_ArrVal_3497 (Array Int Int)) (|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_3498 (Array Int Int)) (|v_ULTIMATE.start_main_#t~mem8#1.offset_26| Int)) (let ((.cse14 (+ |v_ULTIMATE.start_main_#t~mem8#1.offset_26| 4))) (let ((.cse12 (select (store (let ((.cse16 (let ((.cse17 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (store (store (store .cse3 .cse4 v_ArrVal_3473) |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_3476) .cse5 v_ArrVal_3479) .cse6 v_ArrVal_3483)))) (store .cse17 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse17 |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~y~0#1.offset| v_ArrVal_3487))))) (store .cse16 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse16 |c_ULTIMATE.start_main_~x~0#1.base|) .cse14 v_ArrVal_3493))) |ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3498) |c_ULTIMATE.start_main_~x~0#1.base|))) (or (not (<= 0 |ULTIMATE.start_main_~x~1#1.offset|)) (not (= (select (store .cse12 |c_ULTIMATE.start_main_~x~0#1.offset| v_ArrVal_3501) |ULTIMATE.start_main_~x~1#1.offset|) 0)) (= (select .cse12 .cse8) 0) (not (<= |v_ULTIMATE.start_main_#t~mem8#1.offset_26| v_ArrVal_3487)) (= (select (store (select (store (let ((.cse13 (let ((.cse15 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse11 .cse5 v_ArrVal_3480) .cse6 v_ArrVal_3486)))) (store .cse15 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse15 |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~y~0#1.offset| |c_ULTIMATE.start_main_~x~0#1.base|))))) (store .cse13 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse13 |c_ULTIMATE.start_main_~x~0#1.base|) .cse14 v_ArrVal_3494))) |ULTIMATE.start_main_~y~0#1.base| v_ArrVal_3497) |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|) |ULTIMATE.start_main_~x~1#1.offset|) |c_ULTIMATE.start_main_~x~0#1.base|) (not (<= |ULTIMATE.start_main_~x~1#1.offset| 0)) (< v_ArrVal_3476 v_ArrVal_3487)))))))))) is different from false [2022-11-18 19:57:18,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:57:18,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:57:18,913 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:57:19,789 INFO L321 Elim1Store]: treesize reduction 171, result has 41.6 percent of original size [2022-11-18 19:57:19,789 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 303 treesize of output 148 [2022-11-18 19:57:19,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:19,808 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:57:19,811 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:57:19,819 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:57:19,982 INFO L321 Elim1Store]: treesize reduction 132, result has 46.1 percent of original size [2022-11-18 19:57:19,983 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 13 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 151 treesize of output 126 [2022-11-18 19:57:20,018 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 19:57:20,019 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 167 treesize of output 155 [2022-11-18 19:57:20,203 INFO L321 Elim1Store]: treesize reduction 18, result has 82.9 percent of original size [2022-11-18 19:57:20,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 10 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 11 case distinctions, treesize of input 151 treesize of output 211 [2022-11-18 19:57:20,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:57:20,251 INFO L321 Elim1Store]: treesize reduction 5, result has 50.0 percent of original size [2022-11-18 19:57:20,252 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 19:57:20,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:20,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:20,336 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:57:20,336 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 11 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 111 treesize of output 127 [2022-11-18 19:57:20,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 16 [2022-11-18 19:57:20,668 WARN L319 FreeRefinementEngine]: Global settings require throwing the following exception [2022-11-18 19:57:20,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:20,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:57:20,879 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.PartialQuantifierElimination.eliminate(PartialQuantifierElimination.java:90) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:238) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:420) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:399) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:271) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:342) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-18 19:57:20,881 INFO L158 Benchmark]: Toolchain (without parser) took 111981.09ms. Allocated memory was 130.0MB in the beginning and 373.3MB in the end (delta: 243.3MB). Free memory was 92.3MB in the beginning and 142.3MB in the end (delta: -50.0MB). Peak memory consumption was 192.0MB. Max. memory is 16.1GB. [2022-11-18 19:57:20,882 INFO L158 Benchmark]: CDTParser took 10.53ms. Allocated memory is still 130.0MB. Free memory was 100.3MB in the beginning and 109.7MB in the end (delta: -9.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:57:20,882 INFO L158 Benchmark]: CACSL2BoogieTranslator took 523.22ms. Allocated memory is still 130.0MB. Free memory was 91.9MB in the beginning and 97.5MB in the end (delta: -5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-18 19:57:20,882 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.43ms. Allocated memory is still 130.0MB. Free memory was 97.5MB in the beginning and 95.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:57:20,882 INFO L158 Benchmark]: Boogie Preprocessor took 60.64ms. Allocated memory is still 130.0MB. Free memory was 95.4MB in the beginning and 93.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-18 19:57:20,882 INFO L158 Benchmark]: RCFGBuilder took 645.54ms. Allocated memory is still 130.0MB. Free memory was 93.6MB in the beginning and 74.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-18 19:57:20,882 INFO L158 Benchmark]: TraceAbstraction took 110654.16ms. Allocated memory was 130.0MB in the beginning and 373.3MB in the end (delta: 243.3MB). Free memory was 73.8MB in the beginning and 142.3MB in the end (delta: -68.4MB). Peak memory consumption was 175.4MB. Max. memory is 16.1GB. [2022-11-18 19:57:20,884 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 10.53ms. Allocated memory is still 130.0MB. Free memory was 100.3MB in the beginning and 109.7MB in the end (delta: -9.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 523.22ms. Allocated memory is still 130.0MB. Free memory was 91.9MB in the beginning and 97.5MB in the end (delta: -5.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.43ms. Allocated memory is still 130.0MB. Free memory was 97.5MB in the beginning and 95.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.64ms. Allocated memory is still 130.0MB. Free memory was 95.4MB in the beginning and 93.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 645.54ms. Allocated memory is still 130.0MB. Free memory was 93.6MB in the beginning and 74.4MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 110654.16ms. Allocated memory was 130.0MB in the beginning and 373.3MB in the end (delta: 243.3MB). Free memory was 73.8MB in the beginning and 142.3MB in the end (delta: -68.4MB). Peak memory consumption was 175.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-18 19:57:20,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety/test-0504.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cddde357ab55a506b6049f3b60959cd723bf2cbfd36f7774fe3606d53024bbf3 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 19:57:23,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:57:23,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:57:23,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:57:23,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:57:23,392 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:57:23,394 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:57:23,400 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:57:23,403 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:57:23,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:57:23,410 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:57:23,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:57:23,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:57:23,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:57:23,418 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:57:23,420 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:57:23,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:57:23,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:57:23,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:57:23,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:57:23,439 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:57:23,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:57:23,443 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:57:23,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:57:23,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:57:23,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:57:23,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:57:23,457 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:57:23,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:57:23,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:57:23,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:57:23,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:57:23,463 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:57:23,464 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:57:23,465 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:57:23,466 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:57:23,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:57:23,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:57:23,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:57:23,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:57:23,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:57:23,476 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-11-18 19:57:23,521 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:57:23,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:57:23,523 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:57:23,523 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:57:23,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:57:23,525 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:57:23,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:57:23,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:57:23,527 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:57:23,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:57:23,528 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:57:23,529 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 19:57:23,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:57:23,529 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:57:23,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:57:23,530 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 19:57:23,530 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 19:57:23,530 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 19:57:23,530 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:57:23,531 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 19:57:23,531 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-18 19:57:23,531 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-18 19:57:23,531 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:57:23,532 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:57:23,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:57:23,532 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:57:23,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:57:23,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:57:23,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:57:23,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:57:23,534 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-18 19:57:23,534 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-18 19:57:23,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-18 19:57:23,535 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cddde357ab55a506b6049f3b60959cd723bf2cbfd36f7774fe3606d53024bbf3 [2022-11-18 19:57:23,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:57:24,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:57:24,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:57:24,005 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:57:24,008 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:57:24,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/memsafety/test-0504.i [2022-11-18 19:57:24,077 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/data/0e572d253/bce4b79dbdae4d8780dae777848af18c/FLAGce00ddd3f [2022-11-18 19:57:24,726 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:57:24,726 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/sv-benchmarks/c/memsafety/test-0504.i [2022-11-18 19:57:24,744 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/data/0e572d253/bce4b79dbdae4d8780dae777848af18c/FLAGce00ddd3f [2022-11-18 19:57:24,995 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/data/0e572d253/bce4b79dbdae4d8780dae777848af18c [2022-11-18 19:57:24,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:57:25,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:57:25,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:57:25,005 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:57:25,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:57:25,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:57:24" (1/1) ... [2022-11-18 19:57:25,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f936e5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25, skipping insertion in model container [2022-11-18 19:57:25,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:57:24" (1/1) ... [2022-11-18 19:57:25,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:57:25,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:57:25,392 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:57:25,403 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:57:25,448 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:57:25,495 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:57:25,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25 WrapperNode [2022-11-18 19:57:25,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:57:25,499 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:57:25,499 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:57:25,499 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:57:25,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25" (1/1) ... [2022-11-18 19:57:25,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25" (1/1) ... [2022-11-18 19:57:25,550 INFO L138 Inliner]: procedures = 126, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 85 [2022-11-18 19:57:25,551 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:57:25,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:57:25,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:57:25,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:57:25,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25" (1/1) ... [2022-11-18 19:57:25,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25" (1/1) ... [2022-11-18 19:57:25,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25" (1/1) ... [2022-11-18 19:57:25,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25" (1/1) ... [2022-11-18 19:57:25,579 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25" (1/1) ... [2022-11-18 19:57:25,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25" (1/1) ... [2022-11-18 19:57:25,586 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25" (1/1) ... [2022-11-18 19:57:25,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25" (1/1) ... [2022-11-18 19:57:25,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:57:25,591 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:57:25,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:57:25,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:57:25,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25" (1/1) ... [2022-11-18 19:57:25,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:57:25,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:57:25,646 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:57:25,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:57:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:57:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:57:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 19:57:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 19:57:25,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:57:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-18 19:57:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-18 19:57:25,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:57:25,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:57:25,873 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:57:25,876 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:57:26,540 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:57:26,548 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:57:26,548 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-18 19:57:26,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:57:26 BoogieIcfgContainer [2022-11-18 19:57:26,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:57:26,554 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:57:26,555 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:57:26,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:57:26,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:57:24" (1/3) ... [2022-11-18 19:57:26,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390d701b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:57:26, skipping insertion in model container [2022-11-18 19:57:26,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:57:25" (2/3) ... [2022-11-18 19:57:26,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@390d701b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:57:26, skipping insertion in model container [2022-11-18 19:57:26,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:57:26" (3/3) ... [2022-11-18 19:57:26,564 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0504.i [2022-11-18 19:57:26,584 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:57:26,584 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 41 error locations. [2022-11-18 19:57:26,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:57:26,640 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6ed1f3a9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:57:26,641 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2022-11-18 19:57:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 84 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:26,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:57:26,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:26,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 19:57:26,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:26,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:26,662 INFO L85 PathProgramCache]: Analyzing trace with hash 28700552, now seen corresponding path program 1 times [2022-11-18 19:57:26,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:26,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486307049] [2022-11-18 19:57:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:26,695 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:26,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:26,699 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:26,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-18 19:57:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:26,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:57:26,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:26,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:26,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:26,879 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:26,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486307049] [2022-11-18 19:57:26,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486307049] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:26,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:26,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:57:26,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690957944] [2022-11-18 19:57:26,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:26,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:26,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:26,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:26,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:26,958 INFO L87 Difference]: Start difference. First operand has 85 states, 43 states have (on average 2.2093023255813953) internal successors, (95), 84 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:27,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:27,029 INFO L93 Difference]: Finished difference Result 131 states and 137 transitions. [2022-11-18 19:57:27,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:27,032 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 19:57:27,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:27,042 INFO L225 Difference]: With dead ends: 131 [2022-11-18 19:57:27,045 INFO L226 Difference]: Without dead ends: 129 [2022-11-18 19:57:27,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:27,057 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 50 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:27,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 163 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 19:57:27,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-18 19:57:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 105. [2022-11-18 19:57:27,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 64 states have (on average 2.109375) internal successors, (135), 104 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 135 transitions. [2022-11-18 19:57:27,122 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 135 transitions. Word has length 5 [2022-11-18 19:57:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:27,122 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 135 transitions. [2022-11-18 19:57:27,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:27,123 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 135 transitions. [2022-11-18 19:57:27,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:57:27,123 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:27,124 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 19:57:27,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:27,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:27,325 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:27,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:27,325 INFO L85 PathProgramCache]: Analyzing trace with hash 28699819, now seen corresponding path program 1 times [2022-11-18 19:57:27,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:27,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167808250] [2022-11-18 19:57:27,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:27,326 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:27,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:27,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:27,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-18 19:57:27,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:27,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:57:27,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:27,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:57:27,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:27,460 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:27,460 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:27,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167808250] [2022-11-18 19:57:27,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167808250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:27,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:27,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:27,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411006186] [2022-11-18 19:57:27,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:27,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:27,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:27,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:27,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:27,473 INFO L87 Difference]: Start difference. First operand 105 states and 135 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:27,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:27,832 INFO L93 Difference]: Finished difference Result 126 states and 150 transitions. [2022-11-18 19:57:27,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:27,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 19:57:27,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:27,835 INFO L225 Difference]: With dead ends: 126 [2022-11-18 19:57:27,835 INFO L226 Difference]: Without dead ends: 126 [2022-11-18 19:57:27,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:27,836 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 72 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:27,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 60 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:57:27,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-11-18 19:57:27,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 97. [2022-11-18 19:57:27,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 64 states have (on average 1.875) internal successors, (120), 96 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:27,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 120 transitions. [2022-11-18 19:57:27,845 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 120 transitions. Word has length 5 [2022-11-18 19:57:27,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:27,846 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 120 transitions. [2022-11-18 19:57:27,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:27,846 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 120 transitions. [2022-11-18 19:57:27,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 19:57:27,851 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:27,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 19:57:27,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:28,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:28,057 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:28,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:28,058 INFO L85 PathProgramCache]: Analyzing trace with hash 28699820, now seen corresponding path program 1 times [2022-11-18 19:57:28,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:28,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [258687977] [2022-11-18 19:57:28,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:28,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:28,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:28,062 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:28,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-18 19:57:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:28,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:57:28,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:28,126 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:57:28,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:28,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:28,168 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:28,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [258687977] [2022-11-18 19:57:28,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [258687977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:28,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:28,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:28,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309767814] [2022-11-18 19:57:28,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:28,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:28,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:28,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:28,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:28,171 INFO L87 Difference]: Start difference. First operand 97 states and 120 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:28,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:28,503 INFO L93 Difference]: Finished difference Result 131 states and 154 transitions. [2022-11-18 19:57:28,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:28,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 19:57:28,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:28,505 INFO L225 Difference]: With dead ends: 131 [2022-11-18 19:57:28,505 INFO L226 Difference]: Without dead ends: 131 [2022-11-18 19:57:28,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:28,507 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 45 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:28,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 97 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:57:28,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-11-18 19:57:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 96. [2022-11-18 19:57:28,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.7352941176470589) internal successors, (118), 95 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2022-11-18 19:57:28,518 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 5 [2022-11-18 19:57:28,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:28,518 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2022-11-18 19:57:28,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:28,519 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2022-11-18 19:57:28,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 19:57:28,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:28,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 19:57:28,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:28,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:28,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:28,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:28,732 INFO L85 PathProgramCache]: Analyzing trace with hash 889716509, now seen corresponding path program 1 times [2022-11-18 19:57:28,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:28,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912691388] [2022-11-18 19:57:28,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:28,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:28,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:28,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:28,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-18 19:57:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:28,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 19:57:28,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:28,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:28,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:28,800 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:28,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912691388] [2022-11-18 19:57:28,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912691388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:28,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:28,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:28,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061076061] [2022-11-18 19:57:28,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:28,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:28,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:28,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:28,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:28,803 INFO L87 Difference]: Start difference. First operand 96 states and 118 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:28,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:28,972 INFO L93 Difference]: Finished difference Result 98 states and 119 transitions. [2022-11-18 19:57:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:28,976 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 19:57:28,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:28,978 INFO L225 Difference]: With dead ends: 98 [2022-11-18 19:57:28,979 INFO L226 Difference]: Without dead ends: 95 [2022-11-18 19:57:28,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:28,980 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:28,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:57:28,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-18 19:57:28,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2022-11-18 19:57:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 67 states have (on average 1.7313432835820894) internal successors, (116), 94 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:28,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 116 transitions. [2022-11-18 19:57:28,999 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 116 transitions. Word has length 6 [2022-11-18 19:57:28,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:28,999 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 116 transitions. [2022-11-18 19:57:29,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 116 transitions. [2022-11-18 19:57:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 19:57:29,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:29,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:29,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-11-18 19:57:29,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:29,215 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:29,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:29,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1286398787, now seen corresponding path program 1 times [2022-11-18 19:57:29,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:29,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [845255955] [2022-11-18 19:57:29,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:29,217 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:29,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:29,222 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:29,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-18 19:57:29,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:29,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:57:29,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:29,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:57:29,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:57:29,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:29,559 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:57:29,575 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:57:29,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:57:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:29,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:29,608 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:29,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [845255955] [2022-11-18 19:57:29,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [845255955] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:29,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:29,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:57:29,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591768869] [2022-11-18 19:57:29,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:29,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:57:29,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:29,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:57:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:57:29,611 INFO L87 Difference]: Start difference. First operand 95 states and 116 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:29,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:29,876 INFO L93 Difference]: Finished difference Result 121 states and 141 transitions. [2022-11-18 19:57:29,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:57:29,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 19:57:29,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:29,877 INFO L225 Difference]: With dead ends: 121 [2022-11-18 19:57:29,877 INFO L226 Difference]: Without dead ends: 121 [2022-11-18 19:57:29,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:57:29,879 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 154 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:29,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 43 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:57:29,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-18 19:57:29,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 88. [2022-11-18 19:57:29,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 63 states have (on average 1.6349206349206349) internal successors, (103), 87 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:29,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 103 transitions. [2022-11-18 19:57:29,886 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 103 transitions. Word has length 13 [2022-11-18 19:57:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:29,886 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 103 transitions. [2022-11-18 19:57:29,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:29,887 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 103 transitions. [2022-11-18 19:57:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:57:29,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:29,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:29,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:30,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:30,099 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:30,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:30,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1223656742, now seen corresponding path program 1 times [2022-11-18 19:57:30,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:30,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045839690] [2022-11-18 19:57:30,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:30,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:30,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:30,101 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:30,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-18 19:57:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:57:30,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:30,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:57:30,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:30,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:30,246 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:30,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045839690] [2022-11-18 19:57:30,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045839690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:30,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:30,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:30,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12402069] [2022-11-18 19:57:30,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:30,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:30,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:30,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:30,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:30,249 INFO L87 Difference]: Start difference. First operand 88 states and 103 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:30,419 INFO L93 Difference]: Finished difference Result 84 states and 95 transitions. [2022-11-18 19:57:30,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:30,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:57:30,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:30,422 INFO L225 Difference]: With dead ends: 84 [2022-11-18 19:57:30,422 INFO L226 Difference]: Without dead ends: 84 [2022-11-18 19:57:30,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:30,423 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 14 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:30,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 80 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:57:30,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-11-18 19:57:30,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-11-18 19:57:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 63 states have (on average 1.507936507936508) internal successors, (95), 83 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2022-11-18 19:57:30,428 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 14 [2022-11-18 19:57:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:30,429 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2022-11-18 19:57:30,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2022-11-18 19:57:30,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-18 19:57:30,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:30,430 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:30,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:30,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:30,642 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:30,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:30,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1223656741, now seen corresponding path program 1 times [2022-11-18 19:57:30,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:30,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1351029519] [2022-11-18 19:57:30,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:30,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:30,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:30,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:30,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-18 19:57:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:30,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:57:30,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:30,762 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:57:30,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:30,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:30,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:30,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1351029519] [2022-11-18 19:57:30,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1351029519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:30,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:30,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:57:30,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80074678] [2022-11-18 19:57:30,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:30,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:57:30,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:30,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:57:30,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:30,789 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:30,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:30,954 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2022-11-18 19:57:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:57:30,956 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-11-18 19:57:30,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:30,957 INFO L225 Difference]: With dead ends: 80 [2022-11-18 19:57:30,957 INFO L226 Difference]: Without dead ends: 80 [2022-11-18 19:57:30,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:57:30,958 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 10 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:30,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 85 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:57:30,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-18 19:57:30,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-18 19:57:30,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 63 states have (on average 1.380952380952381) internal successors, (87), 79 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 87 transitions. [2022-11-18 19:57:30,964 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 87 transitions. Word has length 14 [2022-11-18 19:57:30,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:30,964 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 87 transitions. [2022-11-18 19:57:30,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 87 transitions. [2022-11-18 19:57:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:57:30,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:30,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:30,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:31,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:31,179 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:31,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:31,179 INFO L85 PathProgramCache]: Analyzing trace with hash 720386228, now seen corresponding path program 1 times [2022-11-18 19:57:31,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:31,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2134687059] [2022-11-18 19:57:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:31,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:31,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:31,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:31,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-18 19:57:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:31,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 19:57:31,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:31,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:57:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:31,365 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:31,366 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:31,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2134687059] [2022-11-18 19:57:31,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2134687059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:31,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:31,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:57:31,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307691678] [2022-11-18 19:57:31,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:31,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:57:31,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:31,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:57:31,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:57:31,369 INFO L87 Difference]: Start difference. First operand 80 states and 87 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:31,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:31,748 INFO L93 Difference]: Finished difference Result 110 states and 116 transitions. [2022-11-18 19:57:31,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:57:31,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 19:57:31,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:31,751 INFO L225 Difference]: With dead ends: 110 [2022-11-18 19:57:31,751 INFO L226 Difference]: Without dead ends: 110 [2022-11-18 19:57:31,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:57:31,753 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 80 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:31,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 77 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:57:31,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-18 19:57:31,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 82. [2022-11-18 19:57:31,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 65 states have (on average 1.4) internal successors, (91), 81 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2022-11-18 19:57:31,759 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 15 [2022-11-18 19:57:31,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:31,759 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2022-11-18 19:57:31,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:31,760 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2022-11-18 19:57:31,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 19:57:31,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:31,760 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:31,784 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:31,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:31,961 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:31,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:31,962 INFO L85 PathProgramCache]: Analyzing trace with hash 720386229, now seen corresponding path program 1 times [2022-11-18 19:57:31,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:31,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [734104792] [2022-11-18 19:57:31,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:31,963 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:31,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:31,964 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:31,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-18 19:57:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:32,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:57:32,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:32,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:57:32,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:32,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:32,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:32,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [734104792] [2022-11-18 19:57:32,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [734104792] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:32,201 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:32,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:57:32,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117165162] [2022-11-18 19:57:32,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:32,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:57:32,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:32,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:57:32,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:57:32,204 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:32,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:32,601 INFO L93 Difference]: Finished difference Result 144 states and 163 transitions. [2022-11-18 19:57:32,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:57:32,602 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 19:57:32,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:32,603 INFO L225 Difference]: With dead ends: 144 [2022-11-18 19:57:32,603 INFO L226 Difference]: Without dead ends: 144 [2022-11-18 19:57:32,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:57:32,604 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 69 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:32,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 109 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:57:32,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-18 19:57:32,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 101. [2022-11-18 19:57:32,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 84 states have (on average 1.4166666666666667) internal successors, (119), 100 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:32,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2022-11-18 19:57:32,610 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 15 [2022-11-18 19:57:32,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:32,610 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2022-11-18 19:57:32,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:32,610 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2022-11-18 19:57:32,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-18 19:57:32,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:32,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:32,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:32,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:32,812 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:32,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:32,812 INFO L85 PathProgramCache]: Analyzing trace with hash 857135985, now seen corresponding path program 1 times [2022-11-18 19:57:32,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:32,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1436975841] [2022-11-18 19:57:32,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:32,813 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:32,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:32,814 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:32,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-18 19:57:32,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:32,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:57:32,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:32,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:32,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:32,964 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:32,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1436975841] [2022-11-18 19:57:32,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1436975841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:32,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:32,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:57:32,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076780996] [2022-11-18 19:57:32,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:32,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:57:32,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:32,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:57:32,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:57:32,967 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:33,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:33,161 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2022-11-18 19:57:33,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:57:33,163 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-18 19:57:33,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:33,163 INFO L225 Difference]: With dead ends: 105 [2022-11-18 19:57:33,163 INFO L226 Difference]: Without dead ends: 105 [2022-11-18 19:57:33,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:57:33,164 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 87 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:33,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 101 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:57:33,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2022-11-18 19:57:33,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99. [2022-11-18 19:57:33,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 82 states have (on average 1.353658536585366) internal successors, (111), 98 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:33,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 111 transitions. [2022-11-18 19:57:33,170 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 111 transitions. Word has length 16 [2022-11-18 19:57:33,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:33,170 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 111 transitions. [2022-11-18 19:57:33,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:33,170 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 111 transitions. [2022-11-18 19:57:33,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:57:33,171 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:33,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:33,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:33,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:33,381 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:33,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:33,382 INFO L85 PathProgramCache]: Analyzing trace with hash 801432789, now seen corresponding path program 1 times [2022-11-18 19:57:33,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:33,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2063166664] [2022-11-18 19:57:33,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:33,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:33,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:33,383 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:33,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-18 19:57:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:33,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 19:57:33,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:33,502 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:57:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:33,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:33,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:33,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2063166664] [2022-11-18 19:57:33,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2063166664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:33,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:33,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:57:33,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926012416] [2022-11-18 19:57:33,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:33,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:57:33,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:33,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:57:33,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:57:33,557 INFO L87 Difference]: Start difference. First operand 99 states and 111 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:34,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:34,121 INFO L93 Difference]: Finished difference Result 138 states and 149 transitions. [2022-11-18 19:57:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:57:34,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:57:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:34,123 INFO L225 Difference]: With dead ends: 138 [2022-11-18 19:57:34,123 INFO L226 Difference]: Without dead ends: 138 [2022-11-18 19:57:34,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:57:34,124 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 108 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:34,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 108 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:57:34,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-18 19:57:34,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 105. [2022-11-18 19:57:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 88 states have (on average 1.375) internal successors, (121), 104 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:34,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 121 transitions. [2022-11-18 19:57:34,128 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 121 transitions. Word has length 17 [2022-11-18 19:57:34,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:34,128 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 121 transitions. [2022-11-18 19:57:34,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:34,129 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 121 transitions. [2022-11-18 19:57:34,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:57:34,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:34,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:34,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-11-18 19:57:34,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:34,339 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:34,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:34,339 INFO L85 PathProgramCache]: Analyzing trace with hash 801432790, now seen corresponding path program 1 times [2022-11-18 19:57:34,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:34,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303588035] [2022-11-18 19:57:34,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:34,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:34,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:34,341 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:34,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-18 19:57:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:34,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:57:34,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:34,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:57:34,592 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:34,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:34,592 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:34,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303588035] [2022-11-18 19:57:34,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303588035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:34,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:34,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:57:34,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174357086] [2022-11-18 19:57:34,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:34,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:57:34,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:34,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:57:34,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:57:34,595 INFO L87 Difference]: Start difference. First operand 105 states and 121 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:35,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:35,217 INFO L93 Difference]: Finished difference Result 179 states and 204 transitions. [2022-11-18 19:57:35,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:57:35,218 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:57:35,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:35,219 INFO L225 Difference]: With dead ends: 179 [2022-11-18 19:57:35,219 INFO L226 Difference]: Without dead ends: 179 [2022-11-18 19:57:35,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:57:35,219 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 109 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:35,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 122 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:57:35,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-18 19:57:35,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 117. [2022-11-18 19:57:35,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 100 states have (on average 1.4) internal successors, (140), 116 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:35,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 140 transitions. [2022-11-18 19:57:35,224 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 140 transitions. Word has length 17 [2022-11-18 19:57:35,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:35,224 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 140 transitions. [2022-11-18 19:57:35,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 140 transitions. [2022-11-18 19:57:35,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:57:35,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:35,225 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:35,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:35,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:35,425 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:35,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:35,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1724432386, now seen corresponding path program 1 times [2022-11-18 19:57:35,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:35,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [460354868] [2022-11-18 19:57:35,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:35,426 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:35,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:35,427 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:35,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-18 19:57:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:35,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-18 19:57:35,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:35,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:35,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:35,611 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:35,728 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-18 19:57:35,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-18 19:57:35,785 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:57:35,786 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 17 [2022-11-18 19:57:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:35,803 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:35,803 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:35,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [460354868] [2022-11-18 19:57:35,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [460354868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:35,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:35,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:57:35,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618847552] [2022-11-18 19:57:35,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:35,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:57:35,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:35,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:57:35,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:57:35,805 INFO L87 Difference]: Start difference. First operand 117 states and 140 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:36,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:36,094 INFO L93 Difference]: Finished difference Result 175 states and 207 transitions. [2022-11-18 19:57:36,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 19:57:36,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:57:36,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:36,096 INFO L225 Difference]: With dead ends: 175 [2022-11-18 19:57:36,096 INFO L226 Difference]: Without dead ends: 175 [2022-11-18 19:57:36,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:57:36,097 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 40 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 107 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:36,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 177 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 64 Invalid, 0 Unknown, 107 Unchecked, 0.3s Time] [2022-11-18 19:57:36,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-18 19:57:36,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 130. [2022-11-18 19:57:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 113 states have (on average 1.3805309734513274) internal successors, (156), 129 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:36,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 156 transitions. [2022-11-18 19:57:36,101 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 156 transitions. Word has length 17 [2022-11-18 19:57:36,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:36,101 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 156 transitions. [2022-11-18 19:57:36,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:36,102 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 156 transitions. [2022-11-18 19:57:36,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 19:57:36,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:36,102 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:36,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:36,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:36,315 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:36,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:36,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1724432387, now seen corresponding path program 1 times [2022-11-18 19:57:36,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:36,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056809194] [2022-11-18 19:57:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:36,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:36,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:36,317 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:36,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-18 19:57:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:36,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 19:57:36,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:36,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:57:36,526 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:57:36,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:36,599 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:36,654 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:36,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:36,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:36,669 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:36,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:36,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:36,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:36,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:36,805 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 19:57:36,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-11-18 19:57:36,840 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:57:36,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:57:36,962 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-11-18 19:57:36,974 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 18 [2022-11-18 19:57:37,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2022-11-18 19:57:37,072 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:57:37,073 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 19 [2022-11-18 19:57:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:37,101 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:37,102 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:37,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1056809194] [2022-11-18 19:57:37,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1056809194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:37,102 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:37,102 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:57:37,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001226083] [2022-11-18 19:57:37,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:37,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:57:37,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:37,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:57:37,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:57:37,103 INFO L87 Difference]: Start difference. First operand 130 states and 156 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:37,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:37,850 INFO L93 Difference]: Finished difference Result 167 states and 198 transitions. [2022-11-18 19:57:37,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:57:37,851 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 19:57:37,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:37,852 INFO L225 Difference]: With dead ends: 167 [2022-11-18 19:57:37,852 INFO L226 Difference]: Without dead ends: 167 [2022-11-18 19:57:37,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:57:37,853 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 71 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:37,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 175 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 181 Invalid, 0 Unknown, 53 Unchecked, 0.6s Time] [2022-11-18 19:57:37,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2022-11-18 19:57:37,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 130. [2022-11-18 19:57:37,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 113 states have (on average 1.3628318584070795) internal successors, (154), 129 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 154 transitions. [2022-11-18 19:57:37,857 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 154 transitions. Word has length 17 [2022-11-18 19:57:37,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:37,857 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 154 transitions. [2022-11-18 19:57:37,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:37,858 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 154 transitions. [2022-11-18 19:57:37,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 19:57:37,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:37,858 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:37,881 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:38,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:38,059 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:38,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:38,059 INFO L85 PathProgramCache]: Analyzing trace with hash -238904615, now seen corresponding path program 1 times [2022-11-18 19:57:38,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:38,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804564473] [2022-11-18 19:57:38,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:38,060 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:38,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:38,061 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:38,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-18 19:57:38,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:38,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 19:57:38,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:38,238 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:38,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:38,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:38,277 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:38,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:38,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:38,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:38,301 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:38,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:38,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:38,423 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:57:38,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2022-11-18 19:57:38,430 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:57:38,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:38,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:38,487 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:38,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804564473] [2022-11-18 19:57:38,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804564473] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:38,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:38,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:57:38,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871799249] [2022-11-18 19:57:38,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:38,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:57:38,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:38,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:57:38,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:57:38,489 INFO L87 Difference]: Start difference. First operand 130 states and 154 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:39,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:39,598 INFO L93 Difference]: Finished difference Result 204 states and 237 transitions. [2022-11-18 19:57:39,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:57:39,599 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 19:57:39,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:39,600 INFO L225 Difference]: With dead ends: 204 [2022-11-18 19:57:39,600 INFO L226 Difference]: Without dead ends: 204 [2022-11-18 19:57:39,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:57:39,601 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 146 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:39,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 226 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 19:57:39,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-18 19:57:39,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 137. [2022-11-18 19:57:39,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 120 states have (on average 1.35) internal successors, (162), 136 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:39,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 162 transitions. [2022-11-18 19:57:39,605 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 162 transitions. Word has length 20 [2022-11-18 19:57:39,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:39,605 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 162 transitions. [2022-11-18 19:57:39,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:39,605 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 162 transitions. [2022-11-18 19:57:39,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 19:57:39,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:39,606 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:39,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:39,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:39,807 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:39,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:39,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1183890140, now seen corresponding path program 1 times [2022-11-18 19:57:39,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:39,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [422448684] [2022-11-18 19:57:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:39,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:39,808 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:39,809 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:39,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-18 19:57:39,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:39,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:57:39,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:40,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:40,105 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:40,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [422448684] [2022-11-18 19:57:40,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [422448684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:40,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:40,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 19:57:40,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411684270] [2022-11-18 19:57:40,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:40,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:57:40,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:40,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:57:40,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:57:40,107 INFO L87 Difference]: Start difference. First operand 137 states and 162 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:40,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:40,593 INFO L93 Difference]: Finished difference Result 166 states and 190 transitions. [2022-11-18 19:57:40,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:57:40,594 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 19:57:40,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:40,595 INFO L225 Difference]: With dead ends: 166 [2022-11-18 19:57:40,595 INFO L226 Difference]: Without dead ends: 166 [2022-11-18 19:57:40,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:57:40,596 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 126 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:40,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 143 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:57:40,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-11-18 19:57:40,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 149. [2022-11-18 19:57:40,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 132 states have (on average 1.3863636363636365) internal successors, (183), 148 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:40,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 183 transitions. [2022-11-18 19:57:40,600 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 183 transitions. Word has length 21 [2022-11-18 19:57:40,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:40,600 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 183 transitions. [2022-11-18 19:57:40,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:40,601 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 183 transitions. [2022-11-18 19:57:40,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:57:40,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:40,601 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-18 19:57:40,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:40,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:40,811 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:40,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:40,811 INFO L85 PathProgramCache]: Analyzing trace with hash 32994949, now seen corresponding path program 1 times [2022-11-18 19:57:40,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:40,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111885554] [2022-11-18 19:57:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:40,812 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:40,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:40,814 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:40,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-18 19:57:41,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:41,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:57:41,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:41,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:57:41,121 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 19:57:41,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 19:57:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:41,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:41,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:41,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111885554] [2022-11-18 19:57:41,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111885554] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:41,227 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:41,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2022-11-18 19:57:41,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405561217] [2022-11-18 19:57:41,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:41,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:57:41,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:41,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:57:41,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:57:41,230 INFO L87 Difference]: Start difference. First operand 149 states and 183 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:41,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:41,564 INFO L93 Difference]: Finished difference Result 169 states and 202 transitions. [2022-11-18 19:57:41,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 19:57:41,564 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:57:41,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:41,565 INFO L225 Difference]: With dead ends: 169 [2022-11-18 19:57:41,565 INFO L226 Difference]: Without dead ends: 169 [2022-11-18 19:57:41,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:57:41,566 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 79 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:41,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 101 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 19:57:41,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2022-11-18 19:57:41,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 148. [2022-11-18 19:57:41,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 132 states have (on average 1.371212121212121) internal successors, (181), 147 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:41,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 181 transitions. [2022-11-18 19:57:41,572 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 181 transitions. Word has length 23 [2022-11-18 19:57:41,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:41,572 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 181 transitions. [2022-11-18 19:57:41,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:41,573 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 181 transitions. [2022-11-18 19:57:41,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 19:57:41,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:41,577 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-18 19:57:41,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:41,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:41,783 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:41,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:41,784 INFO L85 PathProgramCache]: Analyzing trace with hash 32994950, now seen corresponding path program 1 times [2022-11-18 19:57:41,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:41,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [334696473] [2022-11-18 19:57:41,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:41,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:41,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:41,785 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:41,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-18 19:57:41,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:41,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:57:41,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:41,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:57:42,003 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:57:42,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:42,151 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:57:42,167 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:57:42,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:57:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:42,228 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:42,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:42,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [334696473] [2022-11-18 19:57:42,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [334696473] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:42,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:42,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 19:57:42,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119720047] [2022-11-18 19:57:42,879 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:42,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:57:42,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:42,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:57:42,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:57:42,880 INFO L87 Difference]: Start difference. First operand 148 states and 181 transitions. Second operand has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:43,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:43,422 INFO L93 Difference]: Finished difference Result 195 states and 231 transitions. [2022-11-18 19:57:43,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:57:43,423 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 19:57:43,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:43,424 INFO L225 Difference]: With dead ends: 195 [2022-11-18 19:57:43,424 INFO L226 Difference]: Without dead ends: 195 [2022-11-18 19:57:43,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:57:43,424 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 198 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:43,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 121 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 76 Unchecked, 0.4s Time] [2022-11-18 19:57:43,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-11-18 19:57:43,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 150. [2022-11-18 19:57:43,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 134 states have (on average 1.3582089552238805) internal successors, (182), 149 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:43,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 182 transitions. [2022-11-18 19:57:43,429 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 182 transitions. Word has length 23 [2022-11-18 19:57:43,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:43,429 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 182 transitions. [2022-11-18 19:57:43,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.285714285714286) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:43,429 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 182 transitions. [2022-11-18 19:57:43,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 19:57:43,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:43,430 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:43,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:43,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:43,631 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:43,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:43,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1000111316, now seen corresponding path program 1 times [2022-11-18 19:57:43,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:43,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [939721511] [2022-11-18 19:57:43,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:43,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:43,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:43,632 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:43,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-18 19:57:43,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:43,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-18 19:57:43,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:43,805 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:57:43,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:57:43,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:57:43,857 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:57:43,873 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:43,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:43,899 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:57:43,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:57:43,923 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:57:43,932 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-18 19:57:44,002 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 19:57:44,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 19:57:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:44,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:44,189 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:44,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [939721511] [2022-11-18 19:57:44,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [939721511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:44,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:44,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2022-11-18 19:57:44,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410968938] [2022-11-18 19:57:44,190 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:44,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:57:44,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:44,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:57:44,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:57:44,191 INFO L87 Difference]: Start difference. First operand 150 states and 182 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:44,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:44,715 INFO L93 Difference]: Finished difference Result 163 states and 192 transitions. [2022-11-18 19:57:44,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:57:44,716 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 19:57:44,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:44,717 INFO L225 Difference]: With dead ends: 163 [2022-11-18 19:57:44,717 INFO L226 Difference]: Without dead ends: 163 [2022-11-18 19:57:44,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:57:44,718 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 57 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:44,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 220 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:57:44,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-11-18 19:57:44,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 154. [2022-11-18 19:57:44,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 138 states have (on average 1.3478260869565217) internal successors, (186), 153 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:44,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 186 transitions. [2022-11-18 19:57:44,722 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 186 transitions. Word has length 24 [2022-11-18 19:57:44,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:44,722 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 186 transitions. [2022-11-18 19:57:44,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:44,722 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 186 transitions. [2022-11-18 19:57:44,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-18 19:57:44,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:44,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:44,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:44,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:44,936 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:44,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:44,936 INFO L85 PathProgramCache]: Analyzing trace with hash -938680327, now seen corresponding path program 1 times [2022-11-18 19:57:44,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:44,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752242765] [2022-11-18 19:57:44,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:44,937 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:44,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:44,939 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:44,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-18 19:57:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:45,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 19:57:45,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:45,346 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_main_~x~1#1.base| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~x~1#1.base| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |ULTIMATE.start_main_~x~1#1.base|)))) is different from true [2022-11-18 19:57:45,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 19:57:45,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:45,491 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_37| (_ BitVec 32))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_37|) (_ bv0 1))) (= |c_ULTIMATE.start_main_old_#valid#1| (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_37| (_ bv0 1))))) is different from false [2022-11-18 19:57:45,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 19:57:45,493 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:45,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752242765] [2022-11-18 19:57:45,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752242765] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:45,494 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:45,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-18 19:57:45,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978344804] [2022-11-18 19:57:45,494 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:45,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:57:45,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:45,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:57:45,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=53, Unknown=2, NotChecked=30, Total=110 [2022-11-18 19:57:45,495 INFO L87 Difference]: Start difference. First operand 154 states and 186 transitions. Second operand has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:46,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:46,007 INFO L93 Difference]: Finished difference Result 156 states and 187 transitions. [2022-11-18 19:57:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:57:46,007 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-18 19:57:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:46,008 INFO L225 Difference]: With dead ends: 156 [2022-11-18 19:57:46,008 INFO L226 Difference]: Without dead ends: 144 [2022-11-18 19:57:46,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 2 IntricatePredicates, 3 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=80, Unknown=2, NotChecked=38, Total=156 [2022-11-18 19:57:46,009 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 4 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 164 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:46,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 171 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 164 Unchecked, 0.4s Time] [2022-11-18 19:57:46,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-18 19:57:46,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-11-18 19:57:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 128 states have (on average 1.3671875) internal successors, (175), 143 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:46,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 175 transitions. [2022-11-18 19:57:46,014 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 175 transitions. Word has length 25 [2022-11-18 19:57:46,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:46,014 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 175 transitions. [2022-11-18 19:57:46,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.9) internal successors, (49), 11 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:46,014 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 175 transitions. [2022-11-18 19:57:46,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 19:57:46,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:46,015 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:46,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:46,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:46,224 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:46,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:46,225 INFO L85 PathProgramCache]: Analyzing trace with hash -710021245, now seen corresponding path program 1 times [2022-11-18 19:57:46,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:46,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1466015944] [2022-11-18 19:57:46,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:46,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:46,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:46,226 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:46,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-18 19:57:46,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:46,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:57:46,471 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:46,476 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:57:46,482 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:57:46,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:46,561 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:57:46,571 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:57:46,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:57:46,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:46,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:47,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:47,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:47,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1466015944] [2022-11-18 19:57:47,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1466015944] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:47,267 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:47,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 19:57:47,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424506777] [2022-11-18 19:57:47,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:47,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:57:47,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:47,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:57:47,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:57:47,268 INFO L87 Difference]: Start difference. First operand 144 states and 175 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:48,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:48,050 INFO L93 Difference]: Finished difference Result 257 states and 314 transitions. [2022-11-18 19:57:48,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:57:48,051 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 19:57:48,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:48,052 INFO L225 Difference]: With dead ends: 257 [2022-11-18 19:57:48,052 INFO L226 Difference]: Without dead ends: 257 [2022-11-18 19:57:48,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:57:48,053 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 194 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:48,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 144 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 61 Unchecked, 0.7s Time] [2022-11-18 19:57:48,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-11-18 19:57:48,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 166. [2022-11-18 19:57:48,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 150 states have (on average 1.3333333333333333) internal successors, (200), 165 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:48,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 200 transitions. [2022-11-18 19:57:48,058 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 200 transitions. Word has length 27 [2022-11-18 19:57:48,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:48,059 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 200 transitions. [2022-11-18 19:57:48,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:48,059 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 200 transitions. [2022-11-18 19:57:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:57:48,059 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:48,059 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:48,073 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-18 19:57:48,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:48,274 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:48,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash 569384996, now seen corresponding path program 1 times [2022-11-18 19:57:48,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:48,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398044541] [2022-11-18 19:57:48,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:48,275 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:48,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:48,276 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:48,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-18 19:57:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:48,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:57:48,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:57:48,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:48,530 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:48,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1398044541] [2022-11-18 19:57:48,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1398044541] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:48,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:48,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:57:48,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000782180] [2022-11-18 19:57:48,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:48,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:57:48,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:48,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:57:48,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:57:48,532 INFO L87 Difference]: Start difference. First operand 166 states and 200 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:48,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:48,988 INFO L93 Difference]: Finished difference Result 179 states and 204 transitions. [2022-11-18 19:57:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 19:57:48,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 19:57:48,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:48,989 INFO L225 Difference]: With dead ends: 179 [2022-11-18 19:57:48,989 INFO L226 Difference]: Without dead ends: 179 [2022-11-18 19:57:48,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:57:48,990 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 120 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:48,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 106 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 19:57:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-11-18 19:57:48,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 139. [2022-11-18 19:57:48,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 123 states have (on average 1.3089430894308942) internal successors, (161), 138 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:48,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 161 transitions. [2022-11-18 19:57:48,994 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 161 transitions. Word has length 29 [2022-11-18 19:57:48,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:48,994 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 161 transitions. [2022-11-18 19:57:48,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:48,994 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 161 transitions. [2022-11-18 19:57:48,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:57:48,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:48,995 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:49,013 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:49,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:49,196 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:49,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:49,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1492384592, now seen corresponding path program 1 times [2022-11-18 19:57:49,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:49,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323202995] [2022-11-18 19:57:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:49,197 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:49,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:49,198 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:49,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-18 19:57:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:49,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:57:49,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:49,514 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:57:49,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:49,582 INFO L321 Elim1Store]: treesize reduction 29, result has 27.5 percent of original size [2022-11-18 19:57:49,583 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2022-11-18 19:57:49,671 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-18 19:57:49,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 22 [2022-11-18 19:57:49,725 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 19:57:49,750 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:49,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:49,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:49,844 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:49,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323202995] [2022-11-18 19:57:49,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323202995] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:49,844 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:49,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2022-11-18 19:57:49,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589829704] [2022-11-18 19:57:49,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:49,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 19:57:49,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:49,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 19:57:49,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:57:49,845 INFO L87 Difference]: Start difference. First operand 139 states and 161 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:50,587 INFO L93 Difference]: Finished difference Result 150 states and 170 transitions. [2022-11-18 19:57:50,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:57:50,588 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 19:57:50,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:50,588 INFO L225 Difference]: With dead ends: 150 [2022-11-18 19:57:50,588 INFO L226 Difference]: Without dead ends: 150 [2022-11-18 19:57:50,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 47 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-18 19:57:50,589 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 35 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:50,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 192 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 197 Invalid, 0 Unknown, 1 Unchecked, 0.7s Time] [2022-11-18 19:57:50,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-11-18 19:57:50,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 138. [2022-11-18 19:57:50,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 123 states have (on average 1.2926829268292683) internal successors, (159), 137 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 159 transitions. [2022-11-18 19:57:50,593 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 159 transitions. Word has length 29 [2022-11-18 19:57:50,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:50,593 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 159 transitions. [2022-11-18 19:57:50,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:50,593 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 159 transitions. [2022-11-18 19:57:50,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 19:57:50,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:50,594 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:50,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:50,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:50,794 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:50,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:50,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1492384593, now seen corresponding path program 1 times [2022-11-18 19:57:50,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:50,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570398411] [2022-11-18 19:57:50,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:50,795 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:50,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:50,797 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:50,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-18 19:57:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:51,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-18 19:57:51,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:51,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:57:51,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:51,160 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:51,205 INFO L321 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-11-18 19:57:51,205 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2022-11-18 19:57:51,329 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-18 19:57:51,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 20 [2022-11-18 19:57:51,360 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-18 19:57:51,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-18 19:57:51,449 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:57:51,450 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2022-11-18 19:57:51,459 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-11-18 19:57:51,459 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2022-11-18 19:57:51,496 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:51,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:52,274 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:52,274 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:52,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570398411] [2022-11-18 19:57:52,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570398411] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:57:52,274 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:57:52,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2022-11-18 19:57:52,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171556355] [2022-11-18 19:57:52,275 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:57:52,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 19:57:52,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:52,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 19:57:52,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-18 19:57:52,276 INFO L87 Difference]: Start difference. First operand 138 states and 159 transitions. Second operand has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:53,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:53,351 INFO L93 Difference]: Finished difference Result 191 states and 225 transitions. [2022-11-18 19:57:53,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:57:53,352 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 19:57:53,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:53,354 INFO L225 Difference]: With dead ends: 191 [2022-11-18 19:57:53,354 INFO L226 Difference]: Without dead ends: 191 [2022-11-18 19:57:53,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2022-11-18 19:57:53,355 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 79 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:53,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 282 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 159 Invalid, 0 Unknown, 72 Unchecked, 0.8s Time] [2022-11-18 19:57:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2022-11-18 19:57:53,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 131. [2022-11-18 19:57:53,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 117 states have (on average 1.2905982905982907) internal successors, (151), 130 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:53,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2022-11-18 19:57:53,359 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 29 [2022-11-18 19:57:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:53,360 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2022-11-18 19:57:53,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 14 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2022-11-18 19:57:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 19:57:53,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:53,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:53,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:53,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:53,574 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:53,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:53,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1722610891, now seen corresponding path program 1 times [2022-11-18 19:57:53,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:53,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [794432012] [2022-11-18 19:57:53,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:53,575 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:53,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:53,576 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:53,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-18 19:57:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:53,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:57:53,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:53,799 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:57:53,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:53,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 19:57:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:53,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:53,914 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:53,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [794432012] [2022-11-18 19:57:53,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [794432012] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:53,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:53,914 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:57:53,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745142491] [2022-11-18 19:57:53,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:53,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:57:53,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:53,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:57:53,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:57:53,916 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:54,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:54,886 INFO L93 Difference]: Finished difference Result 170 states and 192 transitions. [2022-11-18 19:57:54,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:57:54,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-18 19:57:54,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:54,887 INFO L225 Difference]: With dead ends: 170 [2022-11-18 19:57:54,888 INFO L226 Difference]: Without dead ends: 170 [2022-11-18 19:57:54,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:57:54,888 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 71 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:54,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 155 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 19:57:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-18 19:57:54,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 142. [2022-11-18 19:57:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 128 states have (on average 1.3046875) internal successors, (167), 141 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 167 transitions. [2022-11-18 19:57:54,893 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 167 transitions. Word has length 32 [2022-11-18 19:57:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:54,893 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 167 transitions. [2022-11-18 19:57:54,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 167 transitions. [2022-11-18 19:57:54,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-18 19:57:54,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:54,894 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:54,917 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-18 19:57:55,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:55,094 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:55,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:55,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1722610892, now seen corresponding path program 1 times [2022-11-18 19:57:55,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:55,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658880646] [2022-11-18 19:57:55,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:55,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:55,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:55,096 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:55,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-18 19:57:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:55,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:57:55,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:55,319 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:57:55,385 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:55,392 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:55,494 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:57:55,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-11-18 19:57:55,554 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:55,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:57:55,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:57:55,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1658880646] [2022-11-18 19:57:55,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1658880646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:57:55,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:57:55,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:57:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510867116] [2022-11-18 19:57:55,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:57:55,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:57:55,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:57:55,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:57:55,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:57:55,557 INFO L87 Difference]: Start difference. First operand 142 states and 167 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:56,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:57:56,770 INFO L93 Difference]: Finished difference Result 214 states and 242 transitions. [2022-11-18 19:57:56,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:57:56,771 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-18 19:57:56,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:57:56,772 INFO L225 Difference]: With dead ends: 214 [2022-11-18 19:57:56,772 INFO L226 Difference]: Without dead ends: 214 [2022-11-18 19:57:56,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:57:56,773 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 133 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:57:56,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 231 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:57:56,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-18 19:57:56,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 142. [2022-11-18 19:57:56,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 128 states have (on average 1.296875) internal successors, (166), 141 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 166 transitions. [2022-11-18 19:57:56,778 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 166 transitions. Word has length 32 [2022-11-18 19:57:56,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:57:56,778 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 166 transitions. [2022-11-18 19:57:56,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 8 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:57:56,778 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 166 transitions. [2022-11-18 19:57:56,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 19:57:56,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:57:56,779 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:57:56,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-18 19:57:56,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:56,992 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:57:56,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:57:56,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1051234103, now seen corresponding path program 1 times [2022-11-18 19:57:56,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:57:56,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437400152] [2022-11-18 19:57:56,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:57:56,993 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:57:56,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:57:56,994 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:57:57,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-18 19:57:57,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:57:57,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-18 19:57:57,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:57:57,351 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 19:57:57,351 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 22 [2022-11-18 19:57:57,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:57:57,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:57,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:57,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:57,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:57,634 INFO L321 Elim1Store]: treesize reduction 16, result has 48.4 percent of original size [2022-11-18 19:57:57,635 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 30 [2022-11-18 19:57:57,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:57,745 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:57,766 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:57,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:57,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:57,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:57:57,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:57:57,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:57:58,023 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:57:58,067 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:57:58,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:57:58,151 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1199 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1199) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|)) (_ bv1 1)) (_ bv0 1))) is different from false [2022-11-18 19:57:58,183 INFO L321 Elim1Store]: treesize reduction 7, result has 74.1 percent of original size [2022-11-18 19:57:58,183 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 32 [2022-11-18 19:58:03,362 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:03,363 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2022-11-18 19:58:03,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2022-11-18 19:58:03,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 19:58:03,433 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:03,433 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:03,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437400152] [2022-11-18 19:58:03,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437400152] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:03,433 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:03,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2022-11-18 19:58:03,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159101221] [2022-11-18 19:58:03,434 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:03,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 19:58:03,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:58:03,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 19:58:03,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=315, Unknown=12, NotChecked=36, Total=420 [2022-11-18 19:58:03,435 INFO L87 Difference]: Start difference. First operand 142 states and 166 transitions. Second operand has 21 states, 20 states have (on average 3.15) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:05,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:05,683 INFO L93 Difference]: Finished difference Result 202 states and 229 transitions. [2022-11-18 19:58:05,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:58:05,684 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-18 19:58:05,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:05,685 INFO L225 Difference]: With dead ends: 202 [2022-11-18 19:58:05,685 INFO L226 Difference]: Without dead ends: 202 [2022-11-18 19:58:05,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 50 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=213, Invalid=901, Unknown=12, NotChecked=64, Total=1190 [2022-11-18 19:58:05,686 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 270 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 290 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:05,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 329 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 368 Invalid, 0 Unknown, 290 Unchecked, 1.2s Time] [2022-11-18 19:58:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-11-18 19:58:05,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 162. [2022-11-18 19:58:05,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 148 states have (on average 1.2837837837837838) internal successors, (190), 161 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:05,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 190 transitions. [2022-11-18 19:58:05,691 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 190 transitions. Word has length 33 [2022-11-18 19:58:05,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:05,691 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 190 transitions. [2022-11-18 19:58:05,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 3.15) internal successors, (63), 21 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:05,692 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 190 transitions. [2022-11-18 19:58:05,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-18 19:58:05,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:05,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:05,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:05,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:05,893 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:58:05,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:05,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1051234102, now seen corresponding path program 1 times [2022-11-18 19:58:05,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:05,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [739716387] [2022-11-18 19:58:05,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:05,894 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:05,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:05,895 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:58:05,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-18 19:58:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:06,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 19:58:06,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:06,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:58:06,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:06,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:06,288 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:06,289 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:58:06,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:06,309 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:58:06,329 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:06,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:58:06,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:06,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:58:06,460 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:58:06,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:58:06,565 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:06,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:06,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:06,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:06,644 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:06,653 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:06,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:06,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:06,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:06,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:06,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:06,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:58:06,838 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:06,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:58:06,893 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:06,904 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-18 19:58:07,032 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:07,032 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2022-11-18 19:58:07,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:58:07,102 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:07,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:13,601 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:13,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2022-11-18 19:58:13,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 52 [2022-11-18 19:58:13,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 19:58:13,637 INFO L321 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2022-11-18 19:58:13,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 1 [2022-11-18 19:58:13,712 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:13,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:13,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [739716387] [2022-11-18 19:58:13,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [739716387] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:13,713 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:13,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2022-11-18 19:58:13,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247361631] [2022-11-18 19:58:13,713 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:13,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:58:13,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:58:13,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:58:13,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=378, Unknown=16, NotChecked=0, Total=462 [2022-11-18 19:58:13,714 INFO L87 Difference]: Start difference. First operand 162 states and 190 transitions. Second operand has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:16,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:16,434 INFO L93 Difference]: Finished difference Result 222 states and 250 transitions. [2022-11-18 19:58:16,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 19:58:16,435 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2022-11-18 19:58:16,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:16,435 INFO L225 Difference]: With dead ends: 222 [2022-11-18 19:58:16,436 INFO L226 Difference]: Without dead ends: 222 [2022-11-18 19:58:16,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=239, Invalid=1076, Unknown=17, NotChecked=0, Total=1332 [2022-11-18 19:58:16,437 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 220 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 232 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:16,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 412 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 514 Invalid, 0 Unknown, 232 Unchecked, 1.8s Time] [2022-11-18 19:58:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-11-18 19:58:16,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 161. [2022-11-18 19:58:16,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 147 states have (on average 1.272108843537415) internal successors, (187), 160 states have internal predecessors, (187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:16,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 187 transitions. [2022-11-18 19:58:16,441 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 187 transitions. Word has length 33 [2022-11-18 19:58:16,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:16,442 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 187 transitions. [2022-11-18 19:58:16,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8636363636363638) internal successors, (63), 22 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:16,442 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 187 transitions. [2022-11-18 19:58:16,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-18 19:58:16,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:16,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:16,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:16,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:16,657 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:58:16,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:16,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1866660171, now seen corresponding path program 1 times [2022-11-18 19:58:16,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:16,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1746336848] [2022-11-18 19:58:16,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:16,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:16,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:16,659 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:58:16,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-18 19:58:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:16,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 19:58:16,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:16,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:16,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:58:16,971 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:16,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:58:16,972 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:16,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1746336848] [2022-11-18 19:58:16,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1746336848] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:16,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:16,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:58:16,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212661693] [2022-11-18 19:58:16,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:16,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:58:16,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:58:16,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:58:16,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:58:16,973 INFO L87 Difference]: Start difference. First operand 161 states and 187 transitions. Second operand has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:18,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:18,308 INFO L93 Difference]: Finished difference Result 278 states and 310 transitions. [2022-11-18 19:58:18,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:58:18,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-11-18 19:58:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:18,310 INFO L225 Difference]: With dead ends: 278 [2022-11-18 19:58:18,310 INFO L226 Difference]: Without dead ends: 278 [2022-11-18 19:58:18,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:58:18,311 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 299 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:18,311 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 401 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 19:58:18,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-11-18 19:58:18,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 163. [2022-11-18 19:58:18,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 149 states have (on average 1.2684563758389262) internal successors, (189), 162 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:18,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 189 transitions. [2022-11-18 19:58:18,316 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 189 transitions. Word has length 34 [2022-11-18 19:58:18,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:18,316 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 189 transitions. [2022-11-18 19:58:18,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.25) internal successors, (34), 9 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:18,317 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 189 transitions. [2022-11-18 19:58:18,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 19:58:18,317 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:18,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:18,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:18,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:18,518 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:58:18,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:18,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1198381356, now seen corresponding path program 1 times [2022-11-18 19:58:18,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:18,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966241327] [2022-11-18 19:58:18,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:18,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:18,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:18,520 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:58:18,521 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-18 19:58:18,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:18,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:58:18,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:18,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:58:18,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:58:18,944 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:18,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:58:18,968 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 19:58:18,969 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 19:58:19,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:19,051 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:58:19,064 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:58:19,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:58:19,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:19,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:21,528 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:21,529 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:21,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966241327] [2022-11-18 19:58:21,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966241327] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:21,530 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:21,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 19:58:21,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146864958] [2022-11-18 19:58:21,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:21,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:58:21,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:58:21,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:58:21,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:58:21,532 INFO L87 Difference]: Start difference. First operand 163 states and 189 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:22,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:22,170 INFO L93 Difference]: Finished difference Result 267 states and 308 transitions. [2022-11-18 19:58:22,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:58:22,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-18 19:58:22,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:22,173 INFO L225 Difference]: With dead ends: 267 [2022-11-18 19:58:22,173 INFO L226 Difference]: Without dead ends: 267 [2022-11-18 19:58:22,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-11-18 19:58:22,174 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 125 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:22,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 245 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 110 Invalid, 0 Unknown, 103 Unchecked, 0.6s Time] [2022-11-18 19:58:22,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-11-18 19:58:22,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 196. [2022-11-18 19:58:22,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 182 states have (on average 1.2417582417582418) internal successors, (226), 195 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:22,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 226 transitions. [2022-11-18 19:58:22,180 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 226 transitions. Word has length 35 [2022-11-18 19:58:22,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:22,180 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 226 transitions. [2022-11-18 19:58:22,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:22,180 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 226 transitions. [2022-11-18 19:58:22,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-18 19:58:22,181 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:22,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:22,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:22,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:22,396 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:58:22,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:22,396 INFO L85 PathProgramCache]: Analyzing trace with hash 2031890607, now seen corresponding path program 1 times [2022-11-18 19:58:22,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:22,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1704281322] [2022-11-18 19:58:22,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:22,396 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:22,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:22,397 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:58:22,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-18 19:58:22,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:22,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:58:22,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:22,829 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:23,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:58:23,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:23,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:58:23,193 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:23,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1704281322] [2022-11-18 19:58:23,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1704281322] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:23,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:23,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 19:58:23,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904216818] [2022-11-18 19:58:23,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:23,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 19:58:23,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:58:23,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 19:58:23,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:58:23,194 INFO L87 Difference]: Start difference. First operand 196 states and 226 transitions. Second operand has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:25,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:25,219 INFO L93 Difference]: Finished difference Result 243 states and 274 transitions. [2022-11-18 19:58:25,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:58:25,220 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2022-11-18 19:58:25,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:25,221 INFO L225 Difference]: With dead ends: 243 [2022-11-18 19:58:25,221 INFO L226 Difference]: Without dead ends: 243 [2022-11-18 19:58:25,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=123, Invalid=297, Unknown=0, NotChecked=0, Total=420 [2022-11-18 19:58:25,222 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 240 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 189 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:25,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 169 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 181 Invalid, 0 Unknown, 189 Unchecked, 1.0s Time] [2022-11-18 19:58:25,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-11-18 19:58:25,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 197. [2022-11-18 19:58:25,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 183 states have (on average 1.2404371584699454) internal successors, (227), 196 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:25,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 227 transitions. [2022-11-18 19:58:25,229 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 227 transitions. Word has length 35 [2022-11-18 19:58:25,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:25,230 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 227 transitions. [2022-11-18 19:58:25,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:25,230 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 227 transitions. [2022-11-18 19:58:25,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:58:25,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:25,231 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:25,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:25,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:25,447 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:58:25,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:25,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1479830498, now seen corresponding path program 1 times [2022-11-18 19:58:25,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:25,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918057909] [2022-11-18 19:58:25,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:25,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:25,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:25,449 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:58:25,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-18 19:58:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:25,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:58:25,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:25,700 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:58:25,733 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:58:25,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:58:25,771 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:25,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-11-18 19:58:25,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:25,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:25,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:25,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:25,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918057909] [2022-11-18 19:58:25,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918057909] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:25,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:25,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2022-11-18 19:58:25,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459920044] [2022-11-18 19:58:25,967 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:25,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:58:25,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:58:25,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:58:25,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:58:25,968 INFO L87 Difference]: Start difference. First operand 197 states and 227 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:27,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:27,416 INFO L93 Difference]: Finished difference Result 276 states and 308 transitions. [2022-11-18 19:58:27,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 19:58:27,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 19:58:27,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:27,418 INFO L225 Difference]: With dead ends: 276 [2022-11-18 19:58:27,419 INFO L226 Difference]: Without dead ends: 276 [2022-11-18 19:58:27,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-11-18 19:58:27,419 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 161 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:27,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 311 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 19:58:27,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-11-18 19:58:27,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 197. [2022-11-18 19:58:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 183 states have (on average 1.2349726775956285) internal successors, (226), 196 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 226 transitions. [2022-11-18 19:58:27,425 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 226 transitions. Word has length 36 [2022-11-18 19:58:27,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:27,425 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 226 transitions. [2022-11-18 19:58:27,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 226 transitions. [2022-11-18 19:58:27,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 19:58:27,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:27,426 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:27,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:27,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:27,639 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:58:27,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:27,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1435900467, now seen corresponding path program 1 times [2022-11-18 19:58:27,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:27,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983282749] [2022-11-18 19:58:27,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:27,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:27,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:27,640 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:58:27,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-18 19:58:27,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:27,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:58:27,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:27,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:58:27,876 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:27,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2022-11-18 19:58:27,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:27,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:58:27,980 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:27,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983282749] [2022-11-18 19:58:27,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983282749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:58:27,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:58:27,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 19:58:27,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836119067] [2022-11-18 19:58:27,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:58:27,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 19:58:27,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:58:27,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 19:58:27,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 19:58:27,982 INFO L87 Difference]: Start difference. First operand 197 states and 226 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:29,205 INFO L93 Difference]: Finished difference Result 213 states and 240 transitions. [2022-11-18 19:58:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 19:58:29,205 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 19:58:29,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:29,207 INFO L225 Difference]: With dead ends: 213 [2022-11-18 19:58:29,207 INFO L226 Difference]: Without dead ends: 213 [2022-11-18 19:58:29,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2022-11-18 19:58:29,208 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 54 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:29,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 216 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 19:58:29,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2022-11-18 19:58:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 198. [2022-11-18 19:58:29,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 184 states have (on average 1.233695652173913) internal successors, (227), 197 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:29,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 227 transitions. [2022-11-18 19:58:29,214 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 227 transitions. Word has length 36 [2022-11-18 19:58:29,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:29,214 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 227 transitions. [2022-11-18 19:58:29,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:29,215 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 227 transitions. [2022-11-18 19:58:29,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:58:29,216 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:29,216 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:29,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:29,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:29,427 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:58:29,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:29,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1891361052, now seen corresponding path program 1 times [2022-11-18 19:58:29,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:29,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778602736] [2022-11-18 19:58:29,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:29,428 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:29,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:29,429 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:58:29,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-18 19:58:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:29,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 19:58:29,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:29,772 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:58:29,863 INFO L321 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-18 19:58:29,863 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-18 19:58:30,069 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:58:30,137 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:58:30,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 37 [2022-11-18 19:58:30,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2022-11-18 19:58:30,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 25 [2022-11-18 19:58:30,375 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:30,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:30,595 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1754 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1755 (_ BitVec 1))) (= (bvadd (_ bv1 1) (select (store |c_#valid| |c_ULTIMATE.start_main_~first~0#1.base| v_ArrVal_1755) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1754) |c_ULTIMATE.start_main_~first~0#1.base|) (bvadd |c_ULTIMATE.start_main_~first~0#1.offset| (_ bv12 32))))) (_ bv0 1))) is different from false [2022-11-18 19:58:30,607 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:30,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-18 19:58:30,623 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:30,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 49 [2022-11-18 19:58:30,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2022-11-18 19:58:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:31,471 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:31,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778602736] [2022-11-18 19:58:31,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778602736] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:31,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:31,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2022-11-18 19:58:31,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827070519] [2022-11-18 19:58:31,471 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:31,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 19:58:31,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:58:31,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 19:58:31,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=219, Unknown=1, NotChecked=30, Total=306 [2022-11-18 19:58:31,472 INFO L87 Difference]: Start difference. First operand 198 states and 227 transitions. Second operand has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:33,975 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 19:58:34,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:34,961 INFO L93 Difference]: Finished difference Result 295 states and 329 transitions. [2022-11-18 19:58:34,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 19:58:34,962 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-18 19:58:34,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:34,963 INFO L225 Difference]: With dead ends: 295 [2022-11-18 19:58:34,963 INFO L226 Difference]: Without dead ends: 295 [2022-11-18 19:58:34,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=124, Invalid=431, Unknown=1, NotChecked=44, Total=600 [2022-11-18 19:58:34,964 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 217 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 582 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:34,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 335 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 296 Invalid, 1 Unknown, 582 Unchecked, 3.1s Time] [2022-11-18 19:58:34,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-18 19:58:34,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 260. [2022-11-18 19:58:34,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 246 states have (on average 1.2195121951219512) internal successors, (300), 259 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:34,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 300 transitions. [2022-11-18 19:58:34,971 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 300 transitions. Word has length 37 [2022-11-18 19:58:34,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:34,971 INFO L495 AbstractCegarLoop]: Abstraction has 260 states and 300 transitions. [2022-11-18 19:58:34,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 18 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:34,972 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 300 transitions. [2022-11-18 19:58:34,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 19:58:34,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:34,973 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:34,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:35,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:35,179 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:58:35,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:35,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1891361053, now seen corresponding path program 1 times [2022-11-18 19:58:35,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:35,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824896890] [2022-11-18 19:58:35,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:35,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:35,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:35,181 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:58:35,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-18 19:58:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:35,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-18 19:58:35,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:35,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:58:35,577 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:58:35,577 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:58:35,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:58:35,808 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:58:35,821 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:58:35,897 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:58:35,897 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 19:58:35,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 19:58:36,005 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-18 19:58:36,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 19:58:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:36,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:36,456 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~first~0#1.offset| (_ bv12 32)))) (and (forall ((v_ArrVal_1839 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1839) |c_ULTIMATE.start_main_~first~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv12 32)) (bvadd (_ bv16 32) .cse0)))) (forall ((v_ArrVal_1839 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1840 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv16 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1839) |c_ULTIMATE.start_main_~first~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1840) |c_ULTIMATE.start_main_~first~0#1.base|) .cse1)))))) is different from false [2022-11-18 19:58:36,475 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:36,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-18 19:58:36,489 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:36,489 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-18 19:58:36,516 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:36,517 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 61 [2022-11-18 19:58:36,553 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:36,553 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 96 treesize of output 89 [2022-11-18 19:58:36,567 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 32 [2022-11-18 19:58:36,574 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 58 [2022-11-18 19:58:38,108 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:38,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 36 [2022-11-18 19:58:38,140 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:38,140 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 47 [2022-11-18 19:58:38,175 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:58:38,715 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:38,716 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:38,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824896890] [2022-11-18 19:58:38,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824896890] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:38,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:38,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-11-18 19:58:38,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919703158] [2022-11-18 19:58:38,716 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:38,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:58:38,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:58:38,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:58:38,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=151, Unknown=1, NotChecked=24, Total=210 [2022-11-18 19:58:38,717 INFO L87 Difference]: Start difference. First operand 260 states and 300 transitions. Second operand has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:41,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:41,015 INFO L93 Difference]: Finished difference Result 291 states and 328 transitions. [2022-11-18 19:58:41,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 19:58:41,016 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-18 19:58:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:41,017 INFO L225 Difference]: With dead ends: 291 [2022-11-18 19:58:41,017 INFO L226 Difference]: Without dead ends: 291 [2022-11-18 19:58:41,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=74, Invalid=309, Unknown=1, NotChecked=36, Total=420 [2022-11-18 19:58:41,017 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 104 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:41,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 283 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 303 Invalid, 0 Unknown, 132 Unchecked, 1.7s Time] [2022-11-18 19:58:41,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-18 19:58:41,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 271. [2022-11-18 19:58:41,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 257 states have (on average 1.2412451361867705) internal successors, (319), 270 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:41,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 319 transitions. [2022-11-18 19:58:41,030 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 319 transitions. Word has length 37 [2022-11-18 19:58:41,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:41,032 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 319 transitions. [2022-11-18 19:58:41,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:41,032 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 319 transitions. [2022-11-18 19:58:41,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 19:58:41,032 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:41,032 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:41,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-18 19:58:41,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:41,233 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:58:41,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:41,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1497350135, now seen corresponding path program 1 times [2022-11-18 19:58:41,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:41,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832628232] [2022-11-18 19:58:41,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:41,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:41,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:41,235 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:58:41,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-18 19:58:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:41,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 19:58:41,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:41,503 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:58:41,576 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:58:41,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:58:41,722 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:58:41,776 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:58:41,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 34 [2022-11-18 19:58:41,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2022-11-18 19:58:41,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:41,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:41,934 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1921 (Array (_ BitVec 32) (_ BitVec 32)))) (not (= (_ bv0 32) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_1921) |c_ULTIMATE.start_main_~first~0#1.base|) (bvadd |c_ULTIMATE.start_main_~first~0#1.offset| (_ bv12 32)))))) is different from false [2022-11-18 19:58:41,944 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:41,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 24 [2022-11-18 19:58:41,960 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:41,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 38 [2022-11-18 19:58:41,965 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2022-11-18 19:58:42,265 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:42,266 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:42,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832628232] [2022-11-18 19:58:42,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832628232] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:42,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:42,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2022-11-18 19:58:42,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971915190] [2022-11-18 19:58:42,267 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:42,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 19:58:42,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:58:42,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 19:58:42,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=107, Unknown=1, NotChecked=20, Total=156 [2022-11-18 19:58:42,268 INFO L87 Difference]: Start difference. First operand 271 states and 319 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:43,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:43,659 INFO L93 Difference]: Finished difference Result 288 states and 324 transitions. [2022-11-18 19:58:43,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 19:58:43,660 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-18 19:58:43,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:43,661 INFO L225 Difference]: With dead ends: 288 [2022-11-18 19:58:43,661 INFO L226 Difference]: Without dead ends: 288 [2022-11-18 19:58:43,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=215, Unknown=2, NotChecked=30, Total=306 [2022-11-18 19:58:43,662 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 75 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:43,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 345 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 295 Invalid, 0 Unknown, 157 Unchecked, 1.2s Time] [2022-11-18 19:58:43,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2022-11-18 19:58:43,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 271. [2022-11-18 19:58:43,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 257 states have (on average 1.2334630350194553) internal successors, (317), 270 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 317 transitions. [2022-11-18 19:58:43,673 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 317 transitions. Word has length 38 [2022-11-18 19:58:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:43,673 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 317 transitions. [2022-11-18 19:58:43,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:43,673 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 317 transitions. [2022-11-18 19:58:43,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 19:58:43,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:43,674 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:43,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-18 19:58:43,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:43,889 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:58:43,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:43,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1215842096, now seen corresponding path program 1 times [2022-11-18 19:58:43,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:43,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234772908] [2022-11-18 19:58:43,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:43,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:43,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:43,891 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:58:43,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-18 19:58:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:44,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 40 conjunts are in the unsatisfiable core [2022-11-18 19:58:44,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:44,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:44,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:44,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:58:44,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:44,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:58:44,352 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:58:44,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-18 19:58:44,490 INFO L321 Elim1Store]: treesize reduction 29, result has 38.3 percent of original size [2022-11-18 19:58:44,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 40 [2022-11-18 19:58:44,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:58:44,523 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:44,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:44,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:58:44,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:44,608 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 24 [2022-11-18 19:58:44,627 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:44,652 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 19:58:44,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2022-11-18 19:58:44,879 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:58:45,084 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-18 19:58:45,085 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 17 [2022-11-18 19:58:45,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:58:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:45,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:58:45,933 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:58:45,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 51 [2022-11-18 19:58:47,742 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:47,742 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:58:47,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234772908] [2022-11-18 19:58:47,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234772908] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:58:47,742 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:58:47,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 27 [2022-11-18 19:58:47,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270933677] [2022-11-18 19:58:47,743 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:58:47,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-18 19:58:47,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:58:47,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-18 19:58:47,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2022-11-18 19:58:47,744 INFO L87 Difference]: Start difference. First operand 271 states and 317 transitions. Second operand has 28 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:53,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:58:53,495 INFO L93 Difference]: Finished difference Result 513 states and 615 transitions. [2022-11-18 19:58:53,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-18 19:58:53,495 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-18 19:58:53,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:58:53,498 INFO L225 Difference]: With dead ends: 513 [2022-11-18 19:58:53,498 INFO L226 Difference]: Without dead ends: 513 [2022-11-18 19:58:53,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 43 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 583 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=283, Invalid=2167, Unknown=0, NotChecked=0, Total=2450 [2022-11-18 19:58:53,499 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 233 mSDsluCounter, 823 mSDsCounter, 0 mSdLazyCounter, 1314 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 279 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-18 19:58:53,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 877 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1314 Invalid, 0 Unknown, 279 Unchecked, 3.8s Time] [2022-11-18 19:58:53,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-11-18 19:58:53,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 282. [2022-11-18 19:58:53,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 268 states have (on average 1.2313432835820894) internal successors, (330), 281 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:53,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 330 transitions. [2022-11-18 19:58:53,509 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 330 transitions. Word has length 38 [2022-11-18 19:58:53,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:58:53,509 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 330 transitions. [2022-11-18 19:58:53,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 28 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:58:53,510 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 330 transitions. [2022-11-18 19:58:53,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-18 19:58:53,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:58:53,510 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:58:53,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-11-18 19:58:53,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:53,723 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:58:53,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:58:53,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1215842095, now seen corresponding path program 1 times [2022-11-18 19:58:53,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:58:53,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [869782220] [2022-11-18 19:58:53,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:58:53,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:58:53,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:58:53,725 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:58:53,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-18 19:58:54,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:58:54,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-18 19:58:54,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:58:54,068 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:54,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:58:54,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:54,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:58:54,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:54,111 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:58:54,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:54,122 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:58:54,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:54,130 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:58:54,247 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:58:54,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-18 19:58:54,274 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-18 19:58:54,274 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2022-11-18 19:58:54,470 INFO L321 Elim1Store]: treesize reduction 29, result has 38.3 percent of original size [2022-11-18 19:58:54,470 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 48 [2022-11-18 19:58:54,522 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2022-11-18 19:58:54,522 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 39 [2022-11-18 19:58:54,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-18 19:58:54,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:58:54,587 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2022-11-18 19:58:54,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:54,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-18 19:58:54,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:54,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-18 19:58:54,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:54,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-18 19:58:54,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:58:54,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2022-11-18 19:58:54,765 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-18 19:58:54,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 34 [2022-11-18 19:58:54,794 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-18 19:58:54,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 42 [2022-11-18 19:58:55,255 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:58:55,266 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-18 19:58:55,267 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 61 treesize of output 38 [2022-11-18 19:58:55,278 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 19:58:55,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2022-11-18 19:58:55,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:58:55,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:01,986 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse2 (select .cse3 |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_2086 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2080 (_ BitVec 32)) (|ULTIMATE.start_main_~y~0#1.base| (_ BitVec 32))) (= (select (select (let ((.cse0 (store (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse3 .cse4 v_ArrVal_2080)))) (store .cse1 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse1 |ULTIMATE.start_main_~y~0#1.base|) (_ bv0 32) .cse2))) .cse2 v_ArrVal_2086))) (store .cse0 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|))) |ULTIMATE.start_main_~y~0#1.base|) (_ bv0 32)) |c_ULTIMATE.start_main_~x~0#1.base|)) (forall ((v_ArrVal_2087 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2081 (_ BitVec 32)) (|ULTIMATE.start_main_~y~0#1.base| (_ BitVec 32))) (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (let ((.cse5 (store (let ((.cse7 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse6 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse7 .cse4 v_ArrVal_2081)))) (store .cse6 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse6 |ULTIMATE.start_main_~y~0#1.base|) (_ bv0 32) (select .cse7 |c_ULTIMATE.start_main_~x~0#1.offset|))))) .cse2 v_ArrVal_2087))) (store .cse5 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| (_ bv0 32)))) |ULTIMATE.start_main_~y~0#1.base|) (_ bv0 32))))))) is different from false [2022-11-18 19:59:02,227 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse4 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse2 (select .cse3 |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_2086 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2080 (_ BitVec 32)) (v_ArrVal_2077 (_ BitVec 32)) (|ULTIMATE.start_main_~y~0#1.base| (_ BitVec 32))) (= (select (select (let ((.cse0 (store (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse3 .cse4 v_ArrVal_2077) .cse5 v_ArrVal_2080)))) (store .cse1 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse1 |ULTIMATE.start_main_~y~0#1.base|) (_ bv0 32) .cse2))) .cse2 v_ArrVal_2086))) (store .cse0 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|))) |ULTIMATE.start_main_~y~0#1.base|) (_ bv0 32)) |c_ULTIMATE.start_main_~x~0#1.base|)) (forall ((v_ArrVal_2087 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2081 (_ BitVec 32)) (v_ArrVal_2074 (_ BitVec 32)) (|ULTIMATE.start_main_~y~0#1.base| (_ BitVec 32))) (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (let ((.cse6 (store (let ((.cse8 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse7 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse8 .cse4 v_ArrVal_2074) .cse5 v_ArrVal_2081)))) (store .cse7 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse7 |ULTIMATE.start_main_~y~0#1.base|) (_ bv0 32) (select .cse8 |c_ULTIMATE.start_main_~x~0#1.offset|))))) .cse2 v_ArrVal_2087))) (store .cse6 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse6 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| (_ bv0 32)))) |ULTIMATE.start_main_~y~0#1.base|) (_ bv0 32))))))) is different from false [2022-11-18 19:59:02,405 INFO L321 Elim1Store]: treesize reduction 73, result has 41.1 percent of original size [2022-11-18 19:59:02,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 64 [2022-11-18 19:59:02,419 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:02,419 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 25 [2022-11-18 19:59:02,465 INFO L321 Elim1Store]: treesize reduction 23, result has 47.7 percent of original size [2022-11-18 19:59:02,465 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 102 treesize of output 68 [2022-11-18 19:59:02,483 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-18 19:59:02,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 27 [2022-11-18 19:59:02,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:02,501 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:02,509 INFO L321 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2022-11-18 19:59:02,509 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 57 treesize of output 1 [2022-11-18 19:59:02,516 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:02,516 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:59:02,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [869782220] [2022-11-18 19:59:02,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [869782220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:02,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:02,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 33 [2022-11-18 19:59:02,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486217702] [2022-11-18 19:59:02,517 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:02,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-18 19:59:02,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:59:02,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-18 19:59:02,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=756, Unknown=54, NotChecked=118, Total=1056 [2022-11-18 19:59:02,518 INFO L87 Difference]: Start difference. First operand 282 states and 330 transitions. Second operand has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:07,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:07,398 INFO L93 Difference]: Finished difference Result 327 states and 376 transitions. [2022-11-18 19:59:07,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 19:59:07,398 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2022-11-18 19:59:07,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:07,400 INFO L225 Difference]: With dead ends: 327 [2022-11-18 19:59:07,400 INFO L226 Difference]: Without dead ends: 327 [2022-11-18 19:59:07,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=171, Invalid=1092, Unknown=77, NotChecked=142, Total=1482 [2022-11-18 19:59:07,401 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 91 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 398 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:07,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 625 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 504 Invalid, 0 Unknown, 398 Unchecked, 1.9s Time] [2022-11-18 19:59:07,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-18 19:59:07,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 281. [2022-11-18 19:59:07,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 267 states have (on average 1.2247191011235956) internal successors, (327), 280 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:07,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 327 transitions. [2022-11-18 19:59:07,407 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 327 transitions. Word has length 38 [2022-11-18 19:59:07,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:07,408 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 327 transitions. [2022-11-18 19:59:07,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.090909090909091) internal successors, (69), 33 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:07,408 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 327 transitions. [2022-11-18 19:59:07,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 19:59:07,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:07,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:07,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:07,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:07,623 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:59:07,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:07,623 INFO L85 PathProgramCache]: Analyzing trace with hash 826807101, now seen corresponding path program 1 times [2022-11-18 19:59:07,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:59:07,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [424100496] [2022-11-18 19:59:07,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:07,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:07,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:59:07,625 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:59:07,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-18 19:59:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:07,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 19:59:07,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 19:59:07,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 19:59:07,882 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:59:07,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [424100496] [2022-11-18 19:59:07,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [424100496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:59:07,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:59:07,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:59:07,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982176646] [2022-11-18 19:59:07,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:59:07,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 19:59:07,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:59:07,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 19:59:07,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 19:59:07,884 INFO L87 Difference]: Start difference. First operand 281 states and 327 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:08,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:08,092 INFO L93 Difference]: Finished difference Result 302 states and 356 transitions. [2022-11-18 19:59:08,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:59:08,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-18 19:59:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:08,094 INFO L225 Difference]: With dead ends: 302 [2022-11-18 19:59:08,094 INFO L226 Difference]: Without dead ends: 302 [2022-11-18 19:59:08,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:59:08,095 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 21 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:08,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 105 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 19:59:08,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2022-11-18 19:59:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 280. [2022-11-18 19:59:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 267 states have (on average 1.2209737827715357) internal successors, (326), 279 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 326 transitions. [2022-11-18 19:59:08,101 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 326 transitions. Word has length 39 [2022-11-18 19:59:08,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:08,101 INFO L495 AbstractCegarLoop]: Abstraction has 280 states and 326 transitions. [2022-11-18 19:59:08,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:08,101 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 326 transitions. [2022-11-18 19:59:08,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 19:59:08,102 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:08,102 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:08,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:08,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:08,316 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:59:08,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:08,316 INFO L85 PathProgramCache]: Analyzing trace with hash 826807102, now seen corresponding path program 1 times [2022-11-18 19:59:08,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:59:08,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121068153] [2022-11-18 19:59:08,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:08,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:08,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:59:08,318 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:59:08,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-18 19:59:08,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:08,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-18 19:59:08,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:08,637 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:59:08,705 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:59:08,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:59:08,717 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:59:08,920 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:59:08,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:59:09,006 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-18 19:59:09,006 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 45 [2022-11-18 19:59:09,020 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-11-18 19:59:09,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2022-11-18 19:59:09,109 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-11-18 19:59:09,235 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:09,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:09,745 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd |c_ULTIMATE.start_main_~first~0#1.offset| (_ bv12 32)))) (and (forall ((v_ArrVal_2261 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2261) |c_ULTIMATE.start_main_~first~0#1.base|) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((v_ArrVal_2260 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2261 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2261) |c_ULTIMATE.start_main_~first~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2260) |c_ULTIMATE.start_main_~first~0#1.base|) .cse1)))))) is different from false [2022-11-18 19:59:09,767 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:09,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 34 [2022-11-18 19:59:09,790 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:09,790 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 43 [2022-11-18 19:59:09,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 5 [2022-11-18 19:59:09,838 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:09,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 45 treesize of output 46 [2022-11-18 19:59:09,855 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:09,855 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 36 [2022-11-18 19:59:09,860 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:09,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:09,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2022-11-18 19:59:09,872 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 19:59:09,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:09,878 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-11-18 19:59:10,378 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:10,378 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:59:10,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121068153] [2022-11-18 19:59:10,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121068153] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:10,378 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:10,378 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2022-11-18 19:59:10,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998022184] [2022-11-18 19:59:10,379 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:10,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:59:10,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:59:10,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:59:10,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=204, Unknown=1, NotChecked=28, Total=272 [2022-11-18 19:59:10,380 INFO L87 Difference]: Start difference. First operand 280 states and 326 transitions. Second operand has 17 states, 16 states have (on average 4.1875) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:14,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:14,670 INFO L93 Difference]: Finished difference Result 345 states and 383 transitions. [2022-11-18 19:59:14,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 19:59:14,672 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.1875) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-18 19:59:14,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:14,673 INFO L225 Difference]: With dead ends: 345 [2022-11-18 19:59:14,673 INFO L226 Difference]: Without dead ends: 345 [2022-11-18 19:59:14,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=112, Invalid=593, Unknown=1, NotChecked=50, Total=756 [2022-11-18 19:59:14,674 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 198 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 199 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:14,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 373 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 735 Invalid, 0 Unknown, 199 Unchecked, 3.5s Time] [2022-11-18 19:59:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-18 19:59:14,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 292. [2022-11-18 19:59:14,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 279 states have (on average 1.2365591397849462) internal successors, (345), 291 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:14,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 345 transitions. [2022-11-18 19:59:14,680 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 345 transitions. Word has length 39 [2022-11-18 19:59:14,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:14,681 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 345 transitions. [2022-11-18 19:59:14,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.1875) internal successors, (67), 17 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:14,681 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 345 transitions. [2022-11-18 19:59:14,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-18 19:59:14,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:14,682 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:14,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:14,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:14,899 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:59:14,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:14,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1626988881, now seen corresponding path program 2 times [2022-11-18 19:59:14,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:59:14,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529719487] [2022-11-18 19:59:14,900 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 19:59:14,900 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:14,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:59:14,902 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:59:14,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-18 19:59:15,209 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 19:59:15,209 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 19:59:15,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-18 19:59:15,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:15,229 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:59:15,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-18 19:59:15,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:15,329 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:59:15,346 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:59:15,346 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:59:15,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 19:59:15,444 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-18 19:59:15,460 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:59:15,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:59:15,566 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 19:59:15,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:16,045 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:16,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 41 treesize of output 65 [2022-11-18 19:59:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-18 19:59:18,535 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:59:18,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529719487] [2022-11-18 19:59:18,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529719487] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:18,535 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:18,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 19:59:18,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057726295] [2022-11-18 19:59:18,536 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:18,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:59:18,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:59:18,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:59:18,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:59:18,537 INFO L87 Difference]: Start difference. First operand 292 states and 345 transitions. Second operand has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:19,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:19,157 INFO L93 Difference]: Finished difference Result 328 states and 386 transitions. [2022-11-18 19:59:19,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:59:19,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2022-11-18 19:59:19,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:19,159 INFO L225 Difference]: With dead ends: 328 [2022-11-18 19:59:19,159 INFO L226 Difference]: Without dead ends: 328 [2022-11-18 19:59:19,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-11-18 19:59:19,160 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 108 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:19,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 92 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 17 Unchecked, 0.5s Time] [2022-11-18 19:59:19,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-11-18 19:59:19,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 279. [2022-11-18 19:59:19,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 266 states have (on average 1.236842105263158) internal successors, (329), 278 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:19,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 329 transitions. [2022-11-18 19:59:19,166 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 329 transitions. Word has length 39 [2022-11-18 19:59:19,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:19,167 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 329 transitions. [2022-11-18 19:59:19,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.0) internal successors, (56), 8 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:19,167 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 329 transitions. [2022-11-18 19:59:19,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 19:59:19,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:19,168 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:19,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:19,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:19,383 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:59:19,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:19,383 INFO L85 PathProgramCache]: Analyzing trace with hash 368491831, now seen corresponding path program 1 times [2022-11-18 19:59:19,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:59:19,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1561555053] [2022-11-18 19:59:19,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:19,384 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:19,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:59:19,385 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:59:19,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-18 19:59:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:19,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 19:59:19,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:59:19,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:20,011 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:20,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 28 [2022-11-18 19:59:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 19:59:20,554 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:59:20,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1561555053] [2022-11-18 19:59:20,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1561555053] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:20,555 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:20,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2022-11-18 19:59:20,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602975800] [2022-11-18 19:59:20,555 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:20,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 19:59:20,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:59:20,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 19:59:20,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 19:59:20,556 INFO L87 Difference]: Start difference. First operand 279 states and 329 transitions. Second operand has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:21,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:21,171 INFO L93 Difference]: Finished difference Result 304 states and 355 transitions. [2022-11-18 19:59:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 19:59:21,172 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-18 19:59:21,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:21,173 INFO L225 Difference]: With dead ends: 304 [2022-11-18 19:59:21,174 INFO L226 Difference]: Without dead ends: 304 [2022-11-18 19:59:21,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-18 19:59:21,174 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 106 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:21,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 144 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 19:59:21,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-18 19:59:21,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 285. [2022-11-18 19:59:21,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 272 states have (on average 1.2316176470588236) internal successors, (335), 284 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:21,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 335 transitions. [2022-11-18 19:59:21,181 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 335 transitions. Word has length 40 [2022-11-18 19:59:21,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:21,181 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 335 transitions. [2022-11-18 19:59:21,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.142857142857142) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:21,182 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 335 transitions. [2022-11-18 19:59:21,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 19:59:21,182 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:21,183 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:21,199 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-18 19:59:21,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:21,396 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:59:21,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:21,396 INFO L85 PathProgramCache]: Analyzing trace with hash -193192576, now seen corresponding path program 1 times [2022-11-18 19:59:21,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:59:21,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054355156] [2022-11-18 19:59:21,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:21,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:21,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:59:21,398 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:59:21,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-18 19:59:21,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:21,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-18 19:59:21,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:21,794 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:59:21,927 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-18 19:59:22,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 20 [2022-11-18 19:59:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:22,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:22,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:22,417 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-18 19:59:22,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054355156] [2022-11-18 19:59:22,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054355156] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:59:22,417 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-18 19:59:22,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2022-11-18 19:59:22,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776754560] [2022-11-18 19:59:22,418 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-18 19:59:22,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-18 19:59:22,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-18 19:59:22,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-18 19:59:22,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-18 19:59:22,419 INFO L87 Difference]: Start difference. First operand 285 states and 335 transitions. Second operand has 17 states, 16 states have (on average 3.8125) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:25,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 19:59:25,060 INFO L93 Difference]: Finished difference Result 394 states and 467 transitions. [2022-11-18 19:59:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-18 19:59:25,063 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.8125) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2022-11-18 19:59:25,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 19:59:25,065 INFO L225 Difference]: With dead ends: 394 [2022-11-18 19:59:25,065 INFO L226 Difference]: Without dead ends: 394 [2022-11-18 19:59:25,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=311, Invalid=1021, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 19:59:25,066 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 304 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-18 19:59:25,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 247 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-18 19:59:25,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-11-18 19:59:25,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 324. [2022-11-18 19:59:25,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 311 states have (on average 1.2508038585209003) internal successors, (389), 323 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:25,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 389 transitions. [2022-11-18 19:59:25,073 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 389 transitions. Word has length 40 [2022-11-18 19:59:25,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 19:59:25,073 INFO L495 AbstractCegarLoop]: Abstraction has 324 states and 389 transitions. [2022-11-18 19:59:25,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.8125) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:59:25,073 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 389 transitions. [2022-11-18 19:59:25,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 19:59:25,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 19:59:25,074 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:59:25,087 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-18 19:59:25,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:25,287 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 38 more)] === [2022-11-18 19:59:25,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:59:25,288 INFO L85 PathProgramCache]: Analyzing trace with hash -227019919, now seen corresponding path program 1 times [2022-11-18 19:59:25,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-18 19:59:25,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855806719] [2022-11-18 19:59:25,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:59:25,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-18 19:59:25,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat [2022-11-18 19:59:25,289 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-18 19:59:25,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e9aecdf-b42e-4b13-ac84-6877f48fc4e8/bin/uautomizer-TMbwUNV5ro/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-18 19:59:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:59:25,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-18 19:59:25,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:59:25,649 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-11-18 19:59:25,712 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-18 19:59:25,712 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-11-18 19:59:25,781 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-18 19:59:25,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:59:25,845 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:59:25,903 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-18 19:59:25,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-18 19:59:25,992 INFO L321 Elim1Store]: treesize reduction 63, result has 12.5 percent of original size [2022-11-18 19:59:25,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 79 treesize of output 54 [2022-11-18 19:59:26,012 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 40 [2022-11-18 19:59:26,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2022-11-18 19:59:26,498 INFO L321 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-11-18 19:59:26,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 21 [2022-11-18 19:59:26,603 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:59:26,604 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:59:26,677 INFO L321 Elim1Store]: treesize reduction 7, result has 50.0 percent of original size [2022-11-18 19:59:26,678 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2022-11-18 19:59:27,034 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2626 (_ BitVec 32)) (v_ArrVal_2627 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|) (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~x~0#1.offset|) v_ArrVal_2626))) (.cse2 (bvadd |c_ULTIMATE.start_main_~first~0#1.offset| (_ bv12 32)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~first~0#1.base|) .cse2))) (= .cse0 (select (select .cse1 .cse0) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2627) |c_ULTIMATE.start_main_~first~0#1.base|) .cse2)))))) is different from false [2022-11-18 19:59:27,054 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:27,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 129 [2022-11-18 19:59:27,107 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 19:59:27,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 248 treesize of output 247 [2022-11-18 19:59:27,123 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 113 [2022-11-18 19:59:29,376 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~last~0#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~last~0#1.base|) (bvadd |c_ULTIMATE.start_main_~last~0#1.offset| (_ bv12 32)) |c_ULTIMATE.start_main_~x~0#1.base|)))) (let ((.cse3 (bvadd |c_ULTIMATE.start_main_~first~0#1.offset| (_ bv12 32))) (.cse5 (select .cse4 |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse6 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~x~0#1.offset|))) (let ((.cse7 (= |c_ULTIMATE.start_main_~first~0#1.base| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse11 (= |c_ULTIMATE.start_main_~first~0#1.base| |c_ULTIMATE.start_main_~last~0#1.base|)) (.cse10 (forall ((v_ArrVal_2626 (_ BitVec 32)) (v_arrayElimCell_230 (_ BitVec 32)) (v_arrayElimCell_232 (_ BitVec 32))) (let ((.cse20 (store .cse4 |c_ULTIMATE.start_main_~x~0#1.base| (store .cse5 .cse6 v_ArrVal_2626)))) (let ((.cse18 (select (select .cse20 |c_ULTIMATE.start_main_~first~0#1.base|) .cse3))) (let ((.cse19 (select .cse20 .cse18))) (or (= .cse18 (select .cse19 v_arrayElimCell_232)) (= .cse18 (select .cse19 v_arrayElimCell_230)))))))) (.cse15 (= |c_ULTIMATE.start_main_~first~0#1.offset| |c_ULTIMATE.start_main_~last~0#1.offset|))) (and (forall ((v_ArrVal_2626 (_ BitVec 32)) (v_arrayElimCell_232 (_ BitVec 32))) (let ((.cse2 (store .cse4 |c_ULTIMATE.start_main_~x~0#1.base| (store .cse5 .cse6 v_ArrVal_2626)))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~first~0#1.base|) .cse3))) (let ((.cse1 (select .cse2 .cse0))) (or (= .cse0 (select .cse1 v_arrayElimCell_232)) (= .cse0 (select .cse1 |c_ULTIMATE.start_main_~x~0#1.offset|))))))) (or (not .cse7) (forall ((v_ArrVal_2626 (_ BitVec 32)) (v_arrayElimCell_232 (_ BitVec 32))) (let ((.cse9 (store .cse4 |c_ULTIMATE.start_main_~x~0#1.base| (store .cse5 .cse6 v_ArrVal_2626)))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~first~0#1.base|) .cse3))) (= .cse8 (select (select .cse9 .cse8) v_arrayElimCell_232)))))) (or .cse10 .cse11) (or .cse7 (let ((.cse12 (forall ((v_ArrVal_2626 (_ BitVec 32)) (v_arrayElimCell_230 (_ BitVec 32))) (let ((.cse17 (store .cse4 |c_ULTIMATE.start_main_~x~0#1.base| (store .cse5 .cse6 v_ArrVal_2626)))) (let ((.cse16 (select (select .cse17 |c_ULTIMATE.start_main_~first~0#1.base|) .cse3))) (= .cse16 (select (select .cse17 .cse16) v_arrayElimCell_230))))))) (and (or .cse12 .cse11) (forall ((v_ArrVal_2626 (_ BitVec 32))) (let ((.cse14 (store .cse4 |c_ULTIMATE.start_main_~x~0#1.base| (store .cse5 .cse6 v_ArrVal_2626)))) (let ((.cse13 (select (select .cse14 |c_ULTIMATE.start_main_~first~0#1.base|) .cse3))) (= .cse13 (select (select .cse14 .cse13) |c_ULTIMATE.start_main_~x~0#1.offset|))))) (or .cse12 .cse15)))) (or .cse10 .cse15))))) is different from false [2022-11-18 20:00:18,637 WARN L233 SmtUtils]: Spent 29.98s on a formula simplification. DAG size of input: 55 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:00:20,802 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd |c_ULTIMATE.start_main_~first~0#1.offset| (_ bv12 32))) (.cse4 (bvadd (_ bv16 32) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse6 (bvadd |c_ULTIMATE.start_main_~last~0#1.offset| (_ bv12 32))) (.cse7 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|)) (.cse8 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~x~0#1.offset|)) (.cse9 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~x~0#1.offset|))) (let ((.cse14 (forall ((v_ArrVal_2621 (_ BitVec 32)) (v_ArrVal_2626 (_ BitVec 32)) (v_ArrVal_2619 (_ BitVec 32)) (v_arrayElimCell_230 (_ BitVec 32)) (v_arrayElimCell_232 (_ BitVec 32))) (let ((.cse17 (let ((.cse18 (let ((.cse19 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse7 .cse8 v_ArrVal_2619) .cse9 v_ArrVal_2621)))) (store .cse19 |c_ULTIMATE.start_main_~last~0#1.base| (store (select .cse19 |c_ULTIMATE.start_main_~last~0#1.base|) .cse6 |c_ULTIMATE.start_main_~x~0#1.base|))))) (store .cse18 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse18 |c_ULTIMATE.start_main_~x~0#1.base|) .cse4 v_ArrVal_2626))))) (let ((.cse16 (select (select .cse17 |c_ULTIMATE.start_main_~first~0#1.base|) .cse2))) (let ((.cse15 (select .cse17 .cse16))) (or (= (select .cse15 v_arrayElimCell_232) .cse16) (= (select .cse15 v_arrayElimCell_230) .cse16)))))))) (and (or (not (= |c_ULTIMATE.start_main_~first~0#1.base| |c_ULTIMATE.start_main_~x~0#1.base|)) (forall ((v_ArrVal_2621 (_ BitVec 32)) (v_ArrVal_2626 (_ BitVec 32)) (v_ArrVal_2619 (_ BitVec 32)) (v_arrayElimCell_232 (_ BitVec 32))) (let ((.cse0 (let ((.cse3 (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse7 .cse8 v_ArrVal_2619) .cse9 v_ArrVal_2621)))) (store .cse5 |c_ULTIMATE.start_main_~last~0#1.base| (store (select .cse5 |c_ULTIMATE.start_main_~last~0#1.base|) .cse6 |c_ULTIMATE.start_main_~x~0#1.base|))))) (store .cse3 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse3 |c_ULTIMATE.start_main_~x~0#1.base|) .cse4 v_ArrVal_2626))))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~first~0#1.base|) .cse2))) (= (select (select .cse0 .cse1) v_arrayElimCell_232) .cse1))))) (forall ((v_ArrVal_2621 (_ BitVec 32)) (v_ArrVal_2626 (_ BitVec 32)) (v_ArrVal_2619 (_ BitVec 32))) (let ((.cse10 (let ((.cse12 (let ((.cse13 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse7 .cse8 v_ArrVal_2619) .cse9 v_ArrVal_2621)))) (store .cse13 |c_ULTIMATE.start_main_~last~0#1.base| (store (select .cse13 |c_ULTIMATE.start_main_~last~0#1.base|) .cse6 |c_ULTIMATE.start_main_~x~0#1.base|))))) (store .cse12 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse12 |c_ULTIMATE.start_main_~x~0#1.base|) .cse4 v_ArrVal_2626))))) (let ((.cse11 (select (select .cse10 |c_ULTIMATE.start_main_~first~0#1.base|) .cse2))) (= (select (select .cse10 .cse11) |c_ULTIMATE.start_main_~x~0#1.offset|) .cse11)))) (or (= |c_ULTIMATE.start_main_~first~0#1.offset| |c_ULTIMATE.start_main_~last~0#1.offset|) .cse14) (or .cse14 (= |c_ULTIMATE.start_main_~first~0#1.base| |c_ULTIMATE.start_main_~last~0#1.base|))))) is different from false [2022-11-18 20:00:21,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:00:50,115 WARN L233 SmtUtils]: Spent 28.76s on a formula simplification. DAG size of input: 438 DAG size of output: 256 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-18 20:00:50,117 INFO L321 Elim1Store]: treesize reduction 1657, result has 28.7 percent of original size [2022-11-18 20:00:50,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 1 disjoint index pairs (out of 45 index pairs), introduced 12 new quantified variables, introduced 59 case distinctions, treesize of input 17946782 treesize of output 17248253