./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/list-ext-properties/test-0504_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/list-ext-properties/test-0504_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN --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 ad4b9fd301578a7ddb25530c70896459a49284f596306d3b6d0c853e43916174 --- 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-6b4ec56 [2022-11-20 12:24:12,526 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:24:12,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:24:12,552 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:24:12,553 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:24:12,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:24:12,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:24:12,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:24:12,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:24:12,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:24:12,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:24:12,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:24:12,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:24:12,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:24:12,568 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:24:12,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:24:12,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:24:12,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:24:12,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:24:12,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:24:12,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:24:12,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:24:12,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:24:12,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:24:12,588 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:24:12,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:24:12,589 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:24:12,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:24:12,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:24:12,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:24:12,593 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:24:12,594 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:24:12,596 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:24:12,597 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:24:12,598 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:24:12,599 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:24:12,618 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:24:12,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:24:12,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:24:12,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:24:12,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:24:12,623 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-20 12:24:12,656 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:24:12,656 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:24:12,657 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:24:12,657 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:24:12,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:24:12,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:24:12,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:24:12,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:24:12,660 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:24:12,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:24:12,660 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:24:12,661 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 12:24:12,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:24:12,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:24:12,662 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:24:12,662 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-20 12:24:12,662 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-20 12:24:12,662 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-20 12:24:12,663 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:24:12,663 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:24:12,663 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:24:12,664 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:24:12,664 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:24:12,664 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:24:12,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:24:12,665 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:24:12,665 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:24:12,665 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:24:12,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:24:12,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:24:12,666 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_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad4b9fd301578a7ddb25530c70896459a49284f596306d3b6d0c853e43916174 [2022-11-20 12:24:13,009 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:24:13,032 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:24:13,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:24:13,036 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:24:13,037 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:24:13,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/list-ext-properties/test-0504_1.i [2022-11-20 12:24:16,116 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:24:16,430 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:24:16,442 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/sv-benchmarks/c/list-ext-properties/test-0504_1.i [2022-11-20 12:24:16,460 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/data/67a1db09a/1750ae3edbc649579a772506b0127861/FLAGe6767aa74 [2022-11-20 12:24:16,479 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/data/67a1db09a/1750ae3edbc649579a772506b0127861 [2022-11-20 12:24:16,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:24:16,486 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:24:16,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:24:16,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:24:16,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:24:16,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:24:16" (1/1) ... [2022-11-20 12:24:16,513 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1be70137 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16, skipping insertion in model container [2022-11-20 12:24:16,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:24:16" (1/1) ... [2022-11-20 12:24:16,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:24:16,581 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:24:16,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:24:16,911 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:24:16,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:24:16,994 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:24:16,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16 WrapperNode [2022-11-20 12:24:16,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:24:16,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:24:16,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:24:16,997 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:24:17,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16" (1/1) ... [2022-11-20 12:24:17,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16" (1/1) ... [2022-11-20 12:24:17,049 INFO L138 Inliner]: procedures = 123, calls = 28, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 112 [2022-11-20 12:24:17,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:24:17,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:24:17,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:24:17,051 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:24:17,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16" (1/1) ... [2022-11-20 12:24:17,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16" (1/1) ... [2022-11-20 12:24:17,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16" (1/1) ... [2022-11-20 12:24:17,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16" (1/1) ... [2022-11-20 12:24:17,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16" (1/1) ... [2022-11-20 12:24:17,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16" (1/1) ... [2022-11-20 12:24:17,080 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16" (1/1) ... [2022-11-20 12:24:17,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16" (1/1) ... [2022-11-20 12:24:17,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:24:17,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:24:17,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:24:17,086 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:24:17,096 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16" (1/1) ... [2022-11-20 12:24:17,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:24:17,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:17,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:24:17,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:24:17,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:24:17,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:24:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:24:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:24:17,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:24:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:24:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:24:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:24:17,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:24:17,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:24:17,413 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:24:17,415 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:24:17,936 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:24:17,943 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:24:17,943 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 12:24:17,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:24:17 BoogieIcfgContainer [2022-11-20 12:24:17,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:24:17,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:24:17,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:24:17,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:24:17,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:24:16" (1/3) ... [2022-11-20 12:24:17,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d743e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:24:17, skipping insertion in model container [2022-11-20 12:24:17,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:24:16" (2/3) ... [2022-11-20 12:24:17,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d743e79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:24:17, skipping insertion in model container [2022-11-20 12:24:17,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:24:17" (3/3) ... [2022-11-20 12:24:17,962 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0504_1.i [2022-11-20 12:24:17,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:24:17,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2022-11-20 12:24:18,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:24:18,058 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;@2bad3663, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:24:18,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2022-11-20 12:24:18,064 INFO L276 IsEmpty]: Start isEmpty. Operand has 94 states, 50 states have (on average 2.14) internal successors, (107), 93 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) [2022-11-20 12:24:18,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-20 12:24:18,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:18,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-20 12:24:18,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:18,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:18,082 INFO L85 PathProgramCache]: Analyzing trace with hash 28793288, now seen corresponding path program 1 times [2022-11-20 12:24:18,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:18,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370404985] [2022-11-20 12:24:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:18,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:18,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:18,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370404985] [2022-11-20 12:24:18,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370404985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:18,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:18,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:24:18,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034614652] [2022-11-20 12:24:18,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:18,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:24:18,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:18,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:24:18,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:24:18,338 INFO L87 Difference]: Start difference. First operand has 94 states, 50 states have (on average 2.14) internal successors, (107), 93 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) 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) [2022-11-20 12:24:18,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:18,358 INFO L93 Difference]: Finished difference Result 94 states and 101 transitions. [2022-11-20 12:24:18,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:24:18,360 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 [2022-11-20 12:24:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:18,369 INFO L225 Difference]: With dead ends: 94 [2022-11-20 12:24:18,370 INFO L226 Difference]: Without dead ends: 92 [2022-11-20 12:24:18,387 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 [2022-11-20 12:24:18,390 INFO L413 NwaCegarLoop]: 101 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, 101 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 [2022-11-20 12:24:18,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:24:18,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-20 12:24:18,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2022-11-20 12:24:18,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 49 states have (on average 2.020408163265306) internal successors, (99), 91 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) [2022-11-20 12:24:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2022-11-20 12:24:18,429 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 5 [2022-11-20 12:24:18,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:18,430 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2022-11-20 12:24:18,430 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) [2022-11-20 12:24:18,430 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2022-11-20 12:24:18,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:24:18,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:18,431 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:18,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:24:18,432 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:18,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:18,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1806850220, now seen corresponding path program 1 times [2022-11-20 12:24:18,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:18,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68803421] [2022-11-20 12:24:18,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:18,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:18,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:18,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:18,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68803421] [2022-11-20 12:24:18,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68803421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:18,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:18,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:18,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001193939] [2022-11-20 12:24:18,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:18,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:18,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:18,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:18,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:18,511 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) 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) [2022-11-20 12:24:18,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:18,543 INFO L93 Difference]: Finished difference Result 99 states and 107 transitions. [2022-11-20 12:24:18,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:18,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) 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 [2022-11-20 12:24:18,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:18,546 INFO L225 Difference]: With dead ends: 99 [2022-11-20 12:24:18,546 INFO L226 Difference]: Without dead ends: 99 [2022-11-20 12:24:18,546 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 [2022-11-20 12:24:18,548 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 4 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:18,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 188 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:24:18,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-20 12:24:18,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 96. [2022-11-20 12:24:18,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 53 states have (on average 1.9811320754716981) internal successors, (105), 95 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:18,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 105 transitions. [2022-11-20 12:24:18,558 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 105 transitions. Word has length 7 [2022-11-20 12:24:18,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:18,558 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 105 transitions. [2022-11-20 12:24:18,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) 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) [2022-11-20 12:24:18,559 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 105 transitions. [2022-11-20 12:24:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:24:18,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:18,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:18,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:24:18,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:18,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:18,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1806849231, now seen corresponding path program 1 times [2022-11-20 12:24:18,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:18,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726490565] [2022-11-20 12:24:18,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:18,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:18,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:18,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:18,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:18,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726490565] [2022-11-20 12:24:18,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726490565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:18,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:18,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:24:18,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779866020] [2022-11-20 12:24:18,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:18,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:18,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:18,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:18,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:18,671 INFO L87 Difference]: Start difference. First operand 96 states and 105 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) [2022-11-20 12:24:18,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:18,804 INFO L93 Difference]: Finished difference Result 121 states and 132 transitions. [2022-11-20 12:24:18,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:18,805 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 [2022-11-20 12:24:18,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:18,808 INFO L225 Difference]: With dead ends: 121 [2022-11-20 12:24:18,808 INFO L226 Difference]: Without dead ends: 121 [2022-11-20 12:24:18,808 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 [2022-11-20 12:24:18,809 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 84 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:18,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 79 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:24:18,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-11-20 12:24:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 88. [2022-11-20 12:24:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 53 states have (on average 1.830188679245283) internal successors, (97), 87 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) [2022-11-20 12:24:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2022-11-20 12:24:18,818 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 7 [2022-11-20 12:24:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:18,819 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2022-11-20 12:24:18,819 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) [2022-11-20 12:24:18,819 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2022-11-20 12:24:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-20 12:24:18,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:18,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:18,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:24:18,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:18,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:18,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1806849232, now seen corresponding path program 1 times [2022-11-20 12:24:18,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:18,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805704136] [2022-11-20 12:24:18,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:18,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:19,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:19,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805704136] [2022-11-20 12:24:19,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805704136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:19,001 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:19,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:24:19,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246611512] [2022-11-20 12:24:19,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:19,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:19,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:19,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:19,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:19,004 INFO L87 Difference]: Start difference. First operand 88 states and 97 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) [2022-11-20 12:24:19,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:19,220 INFO L93 Difference]: Finished difference Result 129 states and 145 transitions. [2022-11-20 12:24:19,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:19,221 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 [2022-11-20 12:24:19,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:19,223 INFO L225 Difference]: With dead ends: 129 [2022-11-20 12:24:19,223 INFO L226 Difference]: Without dead ends: 129 [2022-11-20 12:24:19,223 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 [2022-11-20 12:24:19,225 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 57 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:19,225 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 120 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:24:19,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-20 12:24:19,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 90. [2022-11-20 12:24:19,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 60 states have (on average 1.7333333333333334) internal successors, (104), 89 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) [2022-11-20 12:24:19,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2022-11-20 12:24:19,234 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 7 [2022-11-20 12:24:19,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:19,234 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2022-11-20 12:24:19,235 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) [2022-11-20 12:24:19,235 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2022-11-20 12:24:19,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 12:24:19,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:19,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:19,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:24:19,237 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:19,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:19,237 INFO L85 PathProgramCache]: Analyzing trace with hash 177781672, now seen corresponding path program 1 times [2022-11-20 12:24:19,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:19,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631347992] [2022-11-20 12:24:19,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:19,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:19,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:19,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:19,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631347992] [2022-11-20 12:24:19,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631347992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:19,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:19,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:24:19,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069837132] [2022-11-20 12:24:19,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:19,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:19,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:19,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:19,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:19,271 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:19,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:19,342 INFO L93 Difference]: Finished difference Result 92 states and 105 transitions. [2022-11-20 12:24:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:19,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 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 8 [2022-11-20 12:24:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:19,344 INFO L225 Difference]: With dead ends: 92 [2022-11-20 12:24:19,344 INFO L226 Difference]: Without dead ends: 89 [2022-11-20 12:24:19,345 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 [2022-11-20 12:24:19,346 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 1 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:19,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 134 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:24:19,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-20 12:24:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-20 12:24:19,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 59 states have (on average 1.728813559322034) internal successors, (102), 88 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:19,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 102 transitions. [2022-11-20 12:24:19,362 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 102 transitions. Word has length 8 [2022-11-20 12:24:19,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:19,362 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 102 transitions. [2022-11-20 12:24:19,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:19,363 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 102 transitions. [2022-11-20 12:24:19,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 12:24:19,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:19,364 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:19,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:24:19,364 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:19,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:19,369 INFO L85 PathProgramCache]: Analyzing trace with hash 875833349, now seen corresponding path program 1 times [2022-11-20 12:24:19,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:19,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765658] [2022-11-20 12:24:19,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:19,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:19,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:19,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:19,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765658] [2022-11-20 12:24:19,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:19,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:19,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:24:19,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872141033] [2022-11-20 12:24:19,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:19,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:24:19,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:19,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:24:19,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:19,794 INFO L87 Difference]: Start difference. First operand 89 states and 102 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) [2022-11-20 12:24:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:19,976 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2022-11-20 12:24:19,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:24:19,977 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 [2022-11-20 12:24:19,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:19,982 INFO L225 Difference]: With dead ends: 119 [2022-11-20 12:24:19,982 INFO L226 Difference]: Without dead ends: 119 [2022-11-20 12:24:19,983 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 [2022-11-20 12:24:19,993 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 182 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:19,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 90 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:24:19,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-11-20 12:24:20,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 79. [2022-11-20 12:24:20,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 52 states have (on average 1.6730769230769231) internal successors, (87), 78 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) [2022-11-20 12:24:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2022-11-20 12:24:20,004 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 17 [2022-11-20 12:24:20,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:20,005 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2022-11-20 12:24:20,005 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) [2022-11-20 12:24:20,005 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2022-11-20 12:24:20,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 12:24:20,006 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:20,006 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:20,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:24:20,006 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:20,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:20,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1380999357, now seen corresponding path program 1 times [2022-11-20 12:24:20,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:20,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138228359] [2022-11-20 12:24:20,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:20,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:20,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:20,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:20,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138228359] [2022-11-20 12:24:20,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138228359] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:20,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:20,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:20,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897689832] [2022-11-20 12:24:20,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:20,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:20,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:20,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:20,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:20,122 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2022-11-20 12:24:20,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:20,136 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2022-11-20 12:24:20,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:20,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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 [2022-11-20 12:24:20,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:20,137 INFO L225 Difference]: With dead ends: 112 [2022-11-20 12:24:20,138 INFO L226 Difference]: Without dead ends: 112 [2022-11-20 12:24:20,138 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 [2022-11-20 12:24:20,140 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 24 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:20,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 157 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:24:20,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-11-20 12:24:20,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 102. [2022-11-20 12:24:20,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 75 states have (on average 1.6266666666666667) internal successors, (122), 101 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:20,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 122 transitions. [2022-11-20 12:24:20,157 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 122 transitions. Word has length 18 [2022-11-20 12:24:20,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:20,157 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 122 transitions. [2022-11-20 12:24:20,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 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) [2022-11-20 12:24:20,158 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 122 transitions. [2022-11-20 12:24:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 12:24:20,159 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:20,159 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:20,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:24:20,159 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:20,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:20,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1381030048, now seen corresponding path program 1 times [2022-11-20 12:24:20,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:20,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181638155] [2022-11-20 12:24:20,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:20,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:20,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:20,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:20,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181638155] [2022-11-20 12:24:20,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181638155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:20,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:20,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:24:20,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136541842] [2022-11-20 12:24:20,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:20,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:20,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:20,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:20,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:20,271 INFO L87 Difference]: Start difference. First operand 102 states and 122 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 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) [2022-11-20 12:24:20,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:20,341 INFO L93 Difference]: Finished difference Result 98 states and 114 transitions. [2022-11-20 12:24:20,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:20,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 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 [2022-11-20 12:24:20,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:20,343 INFO L225 Difference]: With dead ends: 98 [2022-11-20 12:24:20,343 INFO L226 Difference]: Without dead ends: 98 [2022-11-20 12:24:20,344 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 [2022-11-20 12:24:20,346 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 14 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:20,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 102 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:24:20,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-20 12:24:20,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-11-20 12:24:20,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 75 states have (on average 1.52) internal successors, (114), 97 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:20,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 114 transitions. [2022-11-20 12:24:20,374 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 114 transitions. Word has length 18 [2022-11-20 12:24:20,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:20,374 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 114 transitions. [2022-11-20 12:24:20,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 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) [2022-11-20 12:24:20,375 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 114 transitions. [2022-11-20 12:24:20,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 12:24:20,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:20,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:20,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 12:24:20,376 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:20,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:20,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1381030049, now seen corresponding path program 1 times [2022-11-20 12:24:20,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:20,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194389330] [2022-11-20 12:24:20,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:20,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:20,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:20,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:20,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194389330] [2022-11-20 12:24:20,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194389330] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:20,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:20,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:24:20,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38864028] [2022-11-20 12:24:20,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:20,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:24:20,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:20,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:24:20,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:24:20,534 INFO L87 Difference]: Start difference. First operand 98 states and 114 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 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) [2022-11-20 12:24:20,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:20,585 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2022-11-20 12:24:20,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:24:20,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 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 [2022-11-20 12:24:20,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:20,587 INFO L225 Difference]: With dead ends: 94 [2022-11-20 12:24:20,587 INFO L226 Difference]: Without dead ends: 94 [2022-11-20 12:24:20,588 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 [2022-11-20 12:24:20,590 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 10 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:20,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 107 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:24:20,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-20 12:24:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-11-20 12:24:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 75 states have (on average 1.4133333333333333) internal successors, (106), 93 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:20,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 106 transitions. [2022-11-20 12:24:20,599 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 106 transitions. Word has length 18 [2022-11-20 12:24:20,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:20,600 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 106 transitions. [2022-11-20 12:24:20,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 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) [2022-11-20 12:24:20,600 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 106 transitions. [2022-11-20 12:24:20,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 12:24:20,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:20,601 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] [2022-11-20 12:24:20,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:24:20,601 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:20,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:20,607 INFO L85 PathProgramCache]: Analyzing trace with hash 774470346, now seen corresponding path program 1 times [2022-11-20 12:24:20,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:20,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136808619] [2022-11-20 12:24:20,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:20,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:20,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:20,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136808619] [2022-11-20 12:24:20,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136808619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:20,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:20,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:24:20,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708065947] [2022-11-20 12:24:20,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:20,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:24:20,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:20,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:24:20,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:24:20,990 INFO L87 Difference]: Start difference. First operand 94 states and 106 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) [2022-11-20 12:24:21,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:21,186 INFO L93 Difference]: Finished difference Result 168 states and 190 transitions. [2022-11-20 12:24:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:24:21,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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 [2022-11-20 12:24:21,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:21,188 INFO L225 Difference]: With dead ends: 168 [2022-11-20 12:24:21,188 INFO L226 Difference]: Without dead ends: 168 [2022-11-20 12:24:21,189 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 [2022-11-20 12:24:21,189 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 54 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:21,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 235 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:24:21,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-11-20 12:24:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 112. [2022-11-20 12:24:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 93 states have (on average 1.3978494623655915) internal successors, (130), 111 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:21,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 130 transitions. [2022-11-20 12:24:21,200 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 130 transitions. Word has length 21 [2022-11-20 12:24:21,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:21,200 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 130 transitions. [2022-11-20 12:24:21,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 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) [2022-11-20 12:24:21,201 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 130 transitions. [2022-11-20 12:24:21,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-20 12:24:21,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:21,203 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] [2022-11-20 12:24:21,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 12:24:21,204 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:21,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:21,205 INFO L85 PathProgramCache]: Analyzing trace with hash 774470347, now seen corresponding path program 1 times [2022-11-20 12:24:21,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:21,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115810675] [2022-11-20 12:24:21,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:21,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:21,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:21,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:21,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115810675] [2022-11-20 12:24:21,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115810675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:21,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:21,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:24:21,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132052645] [2022-11-20 12:24:21,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:21,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:24:21,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:21,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:24:21,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:24:21,904 INFO L87 Difference]: Start difference. First operand 112 states and 130 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 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) [2022-11-20 12:24:22,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:22,465 INFO L93 Difference]: Finished difference Result 198 states and 221 transitions. [2022-11-20 12:24:22,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:24:22,466 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 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 [2022-11-20 12:24:22,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:22,467 INFO L225 Difference]: With dead ends: 198 [2022-11-20 12:24:22,467 INFO L226 Difference]: Without dead ends: 198 [2022-11-20 12:24:22,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:24:22,468 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 314 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:22,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 246 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:24:22,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-20 12:24:22,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 112. [2022-11-20 12:24:22,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 93 states have (on average 1.3763440860215055) internal successors, (128), 111 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:22,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 128 transitions. [2022-11-20 12:24:22,472 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 128 transitions. Word has length 21 [2022-11-20 12:24:22,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:22,473 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 128 transitions. [2022-11-20 12:24:22,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 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) [2022-11-20 12:24:22,473 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 128 transitions. [2022-11-20 12:24:22,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 12:24:22,473 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:22,474 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] [2022-11-20 12:24:22,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 12:24:22,474 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:22,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:22,474 INFO L85 PathProgramCache]: Analyzing trace with hash -181494867, now seen corresponding path program 1 times [2022-11-20 12:24:22,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:22,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859611013] [2022-11-20 12:24:22,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:22,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:22,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:22,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859611013] [2022-11-20 12:24:22,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859611013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:22,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:22,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:22,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619882751] [2022-11-20 12:24:22,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:22,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:24:22,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:22,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:24:22,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:24:22,562 INFO L87 Difference]: Start difference. First operand 112 states and 128 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:22,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:22,705 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2022-11-20 12:24:22,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:24:22,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-11-20 12:24:22,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:22,707 INFO L225 Difference]: With dead ends: 146 [2022-11-20 12:24:22,707 INFO L226 Difference]: Without dead ends: 146 [2022-11-20 12:24:22,708 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 [2022-11-20 12:24:22,708 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 95 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:22,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 112 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:24:22,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-20 12:24:22,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 114. [2022-11-20 12:24:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 95 states have (on average 1.3894736842105264) internal successors, (132), 113 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 132 transitions. [2022-11-20 12:24:22,713 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 132 transitions. Word has length 22 [2022-11-20 12:24:22,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:22,713 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 132 transitions. [2022-11-20 12:24:22,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:22,714 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 132 transitions. [2022-11-20 12:24:22,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 12:24:22,714 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:22,715 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] [2022-11-20 12:24:22,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 12:24:22,715 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:22,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:22,716 INFO L85 PathProgramCache]: Analyzing trace with hash -181494866, now seen corresponding path program 1 times [2022-11-20 12:24:22,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:22,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841481128] [2022-11-20 12:24:22,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:22,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:22,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:22,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:22,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841481128] [2022-11-20 12:24:22,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841481128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:22,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:22,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:22,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93374441] [2022-11-20 12:24:22,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:22,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:24:22,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:22,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:24:22,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:24:22,850 INFO L87 Difference]: Start difference. First operand 114 states and 132 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:23,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:23,002 INFO L93 Difference]: Finished difference Result 187 states and 217 transitions. [2022-11-20 12:24:23,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:24:23,003 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 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 22 [2022-11-20 12:24:23,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:23,004 INFO L225 Difference]: With dead ends: 187 [2022-11-20 12:24:23,004 INFO L226 Difference]: Without dead ends: 187 [2022-11-20 12:24:23,004 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 [2022-11-20 12:24:23,005 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 86 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:23,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 151 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:24:23,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-11-20 12:24:23,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 138. [2022-11-20 12:24:23,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 119 states have (on average 1.3865546218487395) internal successors, (165), 137 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:23,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 165 transitions. [2022-11-20 12:24:23,011 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 165 transitions. Word has length 22 [2022-11-20 12:24:23,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:23,011 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 165 transitions. [2022-11-20 12:24:23,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:23,011 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 165 transitions. [2022-11-20 12:24:23,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 12:24:23,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:23,012 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] [2022-11-20 12:24:23,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:24:23,013 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:23,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:23,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1331373881, now seen corresponding path program 1 times [2022-11-20 12:24:23,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:23,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607573029] [2022-11-20 12:24:23,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:23,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:23,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:23,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:23,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:23,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607573029] [2022-11-20 12:24:23,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607573029] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:23,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [511302613] [2022-11-20 12:24:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:23,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:23,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:23,085 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:23,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:24:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:23,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:24:23,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:23,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:23,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:23,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [511302613] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:23,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:24:23,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2022-11-20 12:24:23,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967460150] [2022-11-20 12:24:23,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:23,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:24:23,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:23,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:24:23,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:23,285 INFO L87 Difference]: Start difference. First operand 138 states and 165 transitions. Second operand has 4 states, 4 states have (on average 5.75) 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) [2022-11-20 12:24:23,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:23,308 INFO L93 Difference]: Finished difference Result 138 states and 163 transitions. [2022-11-20 12:24:23,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:24:23,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) 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 [2022-11-20 12:24:23,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:23,310 INFO L225 Difference]: With dead ends: 138 [2022-11-20 12:24:23,310 INFO L226 Difference]: Without dead ends: 138 [2022-11-20 12:24:23,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:23,311 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 70 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:23,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 108 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:24:23,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-11-20 12:24:23,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2022-11-20 12:24:23,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 119 states have (on average 1.3697478991596639) internal successors, (163), 137 states have internal predecessors, (163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:23,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2022-11-20 12:24:23,316 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 23 [2022-11-20 12:24:23,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:23,317 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2022-11-20 12:24:23,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) 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) [2022-11-20 12:24:23,317 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2022-11-20 12:24:23,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:24:23,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:23,318 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] [2022-11-20 12:24:23,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:23,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-20 12:24:23,525 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:23,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1677094766, now seen corresponding path program 1 times [2022-11-20 12:24:23,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:23,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839696086] [2022-11-20 12:24:23,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:23,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:23,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:23,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:23,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839696086] [2022-11-20 12:24:23,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839696086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:23,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:23,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:24:23,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272254029] [2022-11-20 12:24:23,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:23,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:24:23,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:23,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:24:23,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:23,612 INFO L87 Difference]: Start difference. First operand 138 states and 163 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) [2022-11-20 12:24:23,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:23,872 INFO L93 Difference]: Finished difference Result 185 states and 211 transitions. [2022-11-20 12:24:23,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:24:23,872 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 [2022-11-20 12:24:23,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:23,873 INFO L225 Difference]: With dead ends: 185 [2022-11-20 12:24:23,874 INFO L226 Difference]: Without dead ends: 185 [2022-11-20 12:24:23,874 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 [2022-11-20 12:24:23,874 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 133 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:23,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 162 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:24:23,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-20 12:24:23,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 148. [2022-11-20 12:24:23,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 129 states have (on average 1.4108527131782946) internal successors, (182), 147 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) [2022-11-20 12:24:23,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 182 transitions. [2022-11-20 12:24:23,879 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 182 transitions. Word has length 24 [2022-11-20 12:24:23,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:23,880 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 182 transitions. [2022-11-20 12:24:23,880 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) [2022-11-20 12:24:23,880 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 182 transitions. [2022-11-20 12:24:23,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:24:23,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:23,881 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] [2022-11-20 12:24:23,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 12:24:23,882 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:23,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1677094767, now seen corresponding path program 1 times [2022-11-20 12:24:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:23,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084574628] [2022-11-20 12:24:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:23,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:24,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:24,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:24,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084574628] [2022-11-20 12:24:24,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084574628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:24,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:24,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:24:24,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141955913] [2022-11-20 12:24:24,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:24,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:24:24,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:24,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:24:24,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:24,046 INFO L87 Difference]: Start difference. First operand 148 states and 182 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) [2022-11-20 12:24:24,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:24,298 INFO L93 Difference]: Finished difference Result 238 states and 293 transitions. [2022-11-20 12:24:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:24:24,299 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 [2022-11-20 12:24:24,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:24,300 INFO L225 Difference]: With dead ends: 238 [2022-11-20 12:24:24,300 INFO L226 Difference]: Without dead ends: 238 [2022-11-20 12:24:24,300 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 [2022-11-20 12:24:24,301 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 136 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:24,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 180 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:24:24,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-20 12:24:24,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 166. [2022-11-20 12:24:24,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 147 states have (on average 1.4625850340136055) internal successors, (215), 165 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2022-11-20 12:24:24,307 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 24 [2022-11-20 12:24:24,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:24,308 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2022-11-20 12:24:24,309 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) [2022-11-20 12:24:24,309 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2022-11-20 12:24:24,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-20 12:24:24,310 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:24,310 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] [2022-11-20 12:24:24,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 12:24:24,310 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:24,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:24,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1024288817, now seen corresponding path program 1 times [2022-11-20 12:24:24,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:24,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186950168] [2022-11-20 12:24:24,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:24,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:24,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:24,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:24,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:24,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186950168] [2022-11-20 12:24:24,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186950168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:24,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:24,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:24:24,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645777996] [2022-11-20 12:24:24,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:24,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:24:24,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:24,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:24:24,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:24:24,676 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:24,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:24,964 INFO L93 Difference]: Finished difference Result 238 states and 303 transitions. [2022-11-20 12:24:24,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:24:24,965 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 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 [2022-11-20 12:24:24,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:24,966 INFO L225 Difference]: With dead ends: 238 [2022-11-20 12:24:24,966 INFO L226 Difference]: Without dead ends: 238 [2022-11-20 12:24:24,966 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 [2022-11-20 12:24:24,967 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 108 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:24,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 310 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:24:24,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2022-11-20 12:24:24,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 175. [2022-11-20 12:24:24,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 156 states have (on average 1.4487179487179487) internal successors, (226), 174 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) [2022-11-20 12:24:24,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 226 transitions. [2022-11-20 12:24:24,973 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 226 transitions. Word has length 27 [2022-11-20 12:24:24,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:24,973 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 226 transitions. [2022-11-20 12:24:24,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:24,973 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 226 transitions. [2022-11-20 12:24:24,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-20 12:24:24,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:24,974 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] [2022-11-20 12:24:24,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 12:24:24,975 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:24,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1688183339, now seen corresponding path program 1 times [2022-11-20 12:24:24,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:24,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136538645] [2022-11-20 12:24:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:24,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:24,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:25,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:25,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:25,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136538645] [2022-11-20 12:24:25,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136538645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:25,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:25,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:24:25,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133234619] [2022-11-20 12:24:25,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:25,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:24:25,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:25,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:24:25,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:25,084 INFO L87 Difference]: Start difference. First operand 175 states and 226 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:25,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:25,251 INFO L93 Difference]: Finished difference Result 205 states and 261 transitions. [2022-11-20 12:24:25,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:24:25,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 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 [2022-11-20 12:24:25,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:25,253 INFO L225 Difference]: With dead ends: 205 [2022-11-20 12:24:25,253 INFO L226 Difference]: Without dead ends: 205 [2022-11-20 12:24:25,254 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 [2022-11-20 12:24:25,254 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 131 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:25,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 203 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:24:25,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-11-20 12:24:25,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 193. [2022-11-20 12:24:25,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 174 states have (on average 1.5) internal successors, (261), 192 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:25,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 261 transitions. [2022-11-20 12:24:25,262 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 261 transitions. Word has length 28 [2022-11-20 12:24:25,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:25,263 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 261 transitions. [2022-11-20 12:24:25,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:25,263 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 261 transitions. [2022-11-20 12:24:25,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-20 12:24:25,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:25,264 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] [2022-11-20 12:24:25,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:24:25,265 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:25,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:25,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1397370251, now seen corresponding path program 1 times [2022-11-20 12:24:25,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:25,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882309920] [2022-11-20 12:24:25,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:25,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:25,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:25,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:25,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882309920] [2022-11-20 12:24:25,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882309920] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:25,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849124409] [2022-11-20 12:24:25,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:25,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:25,351 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:25,352 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:25,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:24:25,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:25,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 12:24:25,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:25,548 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:25,548 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:25,612 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:25,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849124409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:24:25,612 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:24:25,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2022-11-20 12:24:25,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366865421] [2022-11-20 12:24:25,613 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:25,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:24:25,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:25,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:24:25,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:25,615 INFO L87 Difference]: Start difference. First operand 193 states and 261 transitions. Second operand has 5 states, 5 states have (on average 7.0) 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) [2022-11-20 12:24:25,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:25,647 INFO L93 Difference]: Finished difference Result 247 states and 325 transitions. [2022-11-20 12:24:25,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:24:25,648 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) 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 31 [2022-11-20 12:24:25,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:25,649 INFO L225 Difference]: With dead ends: 247 [2022-11-20 12:24:25,650 INFO L226 Difference]: Without dead ends: 247 [2022-11-20 12:24:25,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:25,650 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 50 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:25,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 269 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:24:25,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-11-20 12:24:25,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 231. [2022-11-20 12:24:25,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 212 states have (on average 1.5235849056603774) internal successors, (323), 230 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:25,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 323 transitions. [2022-11-20 12:24:25,657 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 323 transitions. Word has length 31 [2022-11-20 12:24:25,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:25,658 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 323 transitions. [2022-11-20 12:24:25,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) 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) [2022-11-20 12:24:25,658 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 323 transitions. [2022-11-20 12:24:25,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-20 12:24:25,658 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:25,659 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] [2022-11-20 12:24:25,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:25,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:25,865 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:25,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:25,866 INFO L85 PathProgramCache]: Analyzing trace with hash 368804521, now seen corresponding path program 1 times [2022-11-20 12:24:25,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:25,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309844858] [2022-11-20 12:24:25,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:25,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:26,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:26,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309844858] [2022-11-20 12:24:26,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309844858] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:26,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900249992] [2022-11-20 12:24:26,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:26,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:26,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:26,018 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:26,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:24:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:26,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-20 12:24:26,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:26,263 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 [2022-11-20 12:24:26,297 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:26,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:26,366 WARN L837 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_main_~x~0#1.base_35| Int)) (or (not (= (select |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_35|) 0)) (= (store |c_#valid| |v_ULTIMATE.start_main_~x~0#1.base_35| 0) |c_ULTIMATE.start_main_old_#valid#1|))) is different from false [2022-11-20 12:24:26,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-20 12:24:26,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900249992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:24:26,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:24:26,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 7 [2022-11-20 12:24:26,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731641439] [2022-11-20 12:24:26,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:26,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:24:26,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:26,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:24:26,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=31, Unknown=1, NotChecked=10, Total=56 [2022-11-20 12:24:26,386 INFO L87 Difference]: Start difference. First operand 231 states and 323 transitions. Second operand has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:26,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:26,609 INFO L93 Difference]: Finished difference Result 236 states and 327 transitions. [2022-11-20 12:24:26,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:24:26,610 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 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 [2022-11-20 12:24:26,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:26,611 INFO L225 Difference]: With dead ends: 236 [2022-11-20 12:24:26,611 INFO L226 Difference]: Without dead ends: 224 [2022-11-20 12:24:26,611 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=77, Unknown=1, NotChecked=18, Total=132 [2022-11-20 12:24:26,612 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 22 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:26,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 283 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 136 Invalid, 0 Unknown, 98 Unchecked, 0.2s Time] [2022-11-20 12:24:26,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-20 12:24:26,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2022-11-20 12:24:26,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 205 states have (on average 1.5365853658536586) internal successors, (315), 223 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:26,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 315 transitions. [2022-11-20 12:24:26,624 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 315 transitions. Word has length 32 [2022-11-20 12:24:26,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:26,625 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 315 transitions. [2022-11-20 12:24:26,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.714285714285714) internal successors, (40), 8 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:26,629 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 315 transitions. [2022-11-20 12:24:26,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 12:24:26,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:26,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 12:24:26,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:26,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:26,830 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:26,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:26,831 INFO L85 PathProgramCache]: Analyzing trace with hash -917642468, now seen corresponding path program 1 times [2022-11-20 12:24:26,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:26,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920713266] [2022-11-20 12:24:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:26,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:26,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:27,013 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:27,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:27,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920713266] [2022-11-20 12:24:27,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920713266] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:27,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333547103] [2022-11-20 12:24:27,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:27,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:27,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:27,020 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:27,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:24:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:27,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:24:27,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:27,173 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 [2022-11-20 12:24:27,227 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:24:27,228 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 [2022-11-20 12:24:27,255 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:27,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:27,441 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:27,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333547103] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:24:27,441 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:24:27,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2022-11-20 12:24:27,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159465645] [2022-11-20 12:24:27,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:27,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:24:27,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:27,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:24:27,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:24:27,443 INFO L87 Difference]: Start difference. First operand 224 states and 315 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 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) [2022-11-20 12:24:27,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:27,536 INFO L93 Difference]: Finished difference Result 305 states and 406 transitions. [2022-11-20 12:24:27,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:24:27,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 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 33 [2022-11-20 12:24:27,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:27,538 INFO L225 Difference]: With dead ends: 305 [2022-11-20 12:24:27,538 INFO L226 Difference]: Without dead ends: 305 [2022-11-20 12:24:27,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:24:27,540 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 164 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 58 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:27,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 192 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 58 Unchecked, 0.1s Time] [2022-11-20 12:24:27,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-11-20 12:24:27,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 253. [2022-11-20 12:24:27,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 234 states have (on average 1.5128205128205128) internal successors, (354), 252 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:27,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 354 transitions. [2022-11-20 12:24:27,547 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 354 transitions. Word has length 33 [2022-11-20 12:24:27,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:27,547 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 354 transitions. [2022-11-20 12:24:27,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 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) [2022-11-20 12:24:27,547 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 354 transitions. [2022-11-20 12:24:27,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-20 12:24:27,548 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:27,548 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-20 12:24:27,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:27,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 12:24:27,755 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:27,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:27,755 INFO L85 PathProgramCache]: Analyzing trace with hash -917642467, now seen corresponding path program 1 times [2022-11-20 12:24:27,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:27,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274937339] [2022-11-20 12:24:27,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:27,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:27,970 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:27,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:27,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274937339] [2022-11-20 12:24:27,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274937339] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:27,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258245080] [2022-11-20 12:24:27,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:27,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:27,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:27,972 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:27,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:24:28,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:28,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:24:28,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:28,144 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 [2022-11-20 12:24:28,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:28,290 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 [2022-11-20 12:24:28,298 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:24:28,299 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 [2022-11-20 12:24:28,362 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:28,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:28,775 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 [2022-11-20 12:24:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:28,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258245080] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:24:28,848 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:24:28,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 5, 5] total 11 [2022-11-20 12:24:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084992064] [2022-11-20 12:24:28,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:28,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:24:28,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:28,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:24:28,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:24:28,860 INFO L87 Difference]: Start difference. First operand 253 states and 354 transitions. Second operand has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 12 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) [2022-11-20 12:24:29,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:29,165 INFO L93 Difference]: Finished difference Result 273 states and 367 transitions. [2022-11-20 12:24:29,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:24:29,165 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 12 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) Word has length 33 [2022-11-20 12:24:29,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:29,167 INFO L225 Difference]: With dead ends: 273 [2022-11-20 12:24:29,167 INFO L226 Difference]: Without dead ends: 273 [2022-11-20 12:24:29,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2022-11-20 12:24:29,168 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 387 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:29,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 207 Invalid, 240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 146 Invalid, 0 Unknown, 83 Unchecked, 0.2s Time] [2022-11-20 12:24:29,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-11-20 12:24:29,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 222. [2022-11-20 12:24:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 205 states have (on average 1.5170731707317073) internal successors, (311), 221 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 311 transitions. [2022-11-20 12:24:29,175 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 311 transitions. Word has length 33 [2022-11-20 12:24:29,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:29,176 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 311 transitions. [2022-11-20 12:24:29,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.272727272727273) internal successors, (91), 12 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) [2022-11-20 12:24:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 311 transitions. [2022-11-20 12:24:29,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 12:24:29,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:29,177 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:24:29,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:29,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-20 12:24:29,390 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:29,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:29,390 INFO L85 PathProgramCache]: Analyzing trace with hash -499896363, now seen corresponding path program 1 times [2022-11-20 12:24:29,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:29,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951913011] [2022-11-20 12:24:29,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:29,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:29,422 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:29,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [549512118] [2022-11-20 12:24:29,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:29,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:29,424 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:29,425 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:29,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:24:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:29,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 12:24:29,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:29,623 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 [2022-11-20 12:24:29,653 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 [2022-11-20 12:24:29,687 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2022-11-20 12:24:29,687 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 [2022-11-20 12:24:29,753 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 12:24:29,753 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 [2022-11-20 12:24:29,792 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 [2022-11-20 12:24:29,810 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:29,810 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:30,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:30,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:30,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951913011] [2022-11-20 12:24:30,023 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:30,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549512118] [2022-11-20 12:24:30,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549512118] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:24:30,024 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:24:30,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2022-11-20 12:24:30,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761704241] [2022-11-20 12:24:30,025 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:30,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 12:24:30,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:30,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 12:24:30,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-20 12:24:30,026 INFO L87 Difference]: Start difference. First operand 222 states and 311 transitions. Second operand has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 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) [2022-11-20 12:24:30,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:30,422 INFO L93 Difference]: Finished difference Result 264 states and 359 transitions. [2022-11-20 12:24:30,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:24:30,422 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 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 35 [2022-11-20 12:24:30,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:30,424 INFO L225 Difference]: With dead ends: 264 [2022-11-20 12:24:30,424 INFO L226 Difference]: Without dead ends: 264 [2022-11-20 12:24:30,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=106, Invalid=356, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:24:30,425 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 79 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 135 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:30,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 473 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 278 Invalid, 0 Unknown, 135 Unchecked, 0.2s Time] [2022-11-20 12:24:30,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-11-20 12:24:30,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 221. [2022-11-20 12:24:30,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 205 states have (on average 1.5073170731707317) internal successors, (309), 220 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 309 transitions. [2022-11-20 12:24:30,430 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 309 transitions. Word has length 35 [2022-11-20 12:24:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:30,431 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 309 transitions. [2022-11-20 12:24:30,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.0) internal successors, (55), 12 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) [2022-11-20 12:24:30,433 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 309 transitions. [2022-11-20 12:24:30,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-20 12:24:30,433 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:30,433 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-20 12:24:30,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:30,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:30,634 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:30,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:30,635 INFO L85 PathProgramCache]: Analyzing trace with hash -499896362, now seen corresponding path program 1 times [2022-11-20 12:24:30,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:30,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039868028] [2022-11-20 12:24:30,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:30,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:30,657 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:30,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1473028887] [2022-11-20 12:24:30,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:30,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:30,658 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:30,659 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:30,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:24:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:30,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-20 12:24:30,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:30,863 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 [2022-11-20 12:24:30,926 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 [2022-11-20 12:24:30,932 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 [2022-11-20 12:24:30,990 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2022-11-20 12:24:30,991 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 22 treesize of output 32 [2022-11-20 12:24:31,025 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2022-11-20 12:24:31,030 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 [2022-11-20 12:24:31,129 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 12:24:31,130 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 [2022-11-20 12:24:31,155 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2022-11-20 12:24:31,156 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 38 treesize of output 29 [2022-11-20 12:24:31,223 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 19 [2022-11-20 12:24:31,228 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 26 treesize of output 14 [2022-11-20 12:24:31,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:31,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:35,689 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 [2022-11-20 12:24:35,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:35,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:35,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039868028] [2022-11-20 12:24:35,836 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:35,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473028887] [2022-11-20 12:24:35,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473028887] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:24:35,836 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:24:35,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-11-20 12:24:35,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680020554] [2022-11-20 12:24:35,837 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:35,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-20 12:24:35,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:35,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-20 12:24:35,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:24:35,838 INFO L87 Difference]: Start difference. First operand 221 states and 309 transitions. Second operand has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 16 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) [2022-11-20 12:24:36,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:36,519 INFO L93 Difference]: Finished difference Result 297 states and 415 transitions. [2022-11-20 12:24:36,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:24:36,520 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 16 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 35 [2022-11-20 12:24:36,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:36,522 INFO L225 Difference]: With dead ends: 297 [2022-11-20 12:24:36,522 INFO L226 Difference]: Without dead ends: 297 [2022-11-20 12:24:36,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=123, Invalid=527, Unknown=0, NotChecked=0, Total=650 [2022-11-20 12:24:36,523 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 60 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:36,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 619 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 270 Invalid, 0 Unknown, 163 Unchecked, 0.3s Time] [2022-11-20 12:24:36,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2022-11-20 12:24:36,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 208. [2022-11-20 12:24:36,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 193 states have (on average 1.528497409326425) internal successors, (295), 207 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:36,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 295 transitions. [2022-11-20 12:24:36,530 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 295 transitions. Word has length 35 [2022-11-20 12:24:36,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:36,530 INFO L495 AbstractCegarLoop]: Abstraction has 208 states and 295 transitions. [2022-11-20 12:24:36,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 16 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) [2022-11-20 12:24:36,531 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 295 transitions. [2022-11-20 12:24:36,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-20 12:24:36,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:36,531 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:36,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:36,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-20 12:24:36,732 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:36,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:36,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1032157181, now seen corresponding path program 1 times [2022-11-20 12:24:36,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:36,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659750073] [2022-11-20 12:24:36,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:36,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:36,759 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:36,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [579999220] [2022-11-20 12:24:36,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:36,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:36,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:36,762 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:36,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:24:36,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:36,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:24:36,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:36,991 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 [2022-11-20 12:24:37,082 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:37,083 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 [2022-11-20 12:24:37,096 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:24:37,096 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 [2022-11-20 12:24:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:37,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:37,576 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 [2022-11-20 12:24:37,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:37,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:37,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659750073] [2022-11-20 12:24:37,646 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:37,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [579999220] [2022-11-20 12:24:37,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [579999220] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:24:37,647 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:24:37,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-11-20 12:24:37,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879320375] [2022-11-20 12:24:37,649 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:24:37,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:24:37,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:37,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:24:37,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:24:37,656 INFO L87 Difference]: Start difference. First operand 208 states and 295 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 10 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) [2022-11-20 12:24:37,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:37,923 INFO L93 Difference]: Finished difference Result 378 states and 531 transitions. [2022-11-20 12:24:37,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-20 12:24:37,924 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 10 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 36 [2022-11-20 12:24:37,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:37,926 INFO L225 Difference]: With dead ends: 378 [2022-11-20 12:24:37,926 INFO L226 Difference]: Without dead ends: 378 [2022-11-20 12:24:37,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-20 12:24:37,927 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 216 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:37,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 237 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 133 Invalid, 0 Unknown, 65 Unchecked, 0.2s Time] [2022-11-20 12:24:37,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-20 12:24:37,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 250. [2022-11-20 12:24:37,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 235 states have (on average 1.4723404255319148) internal successors, (346), 249 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:37,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 346 transitions. [2022-11-20 12:24:37,939 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 346 transitions. Word has length 36 [2022-11-20 12:24:37,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:37,940 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 346 transitions. [2022-11-20 12:24:37,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 10 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) [2022-11-20 12:24:37,941 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 346 transitions. [2022-11-20 12:24:37,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-20 12:24:37,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:37,941 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:37,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:38,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:38,154 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:38,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:38,154 INFO L85 PathProgramCache]: Analyzing trace with hash 234396292, now seen corresponding path program 1 times [2022-11-20 12:24:38,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:38,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736796913] [2022-11-20 12:24:38,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:38,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:38,179 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:38,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1003441551] [2022-11-20 12:24:38,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:38,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:38,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:38,181 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:38,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:24:38,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:38,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-20 12:24:38,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:38,462 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:24:38,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:38,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:38,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736796913] [2022-11-20 12:24:38,463 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:38,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1003441551] [2022-11-20 12:24:38,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1003441551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:38,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:38,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:24:38,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871058888] [2022-11-20 12:24:38,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:38,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:24:38,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:38,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:24:38,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:24:38,465 INFO L87 Difference]: Start difference. First operand 250 states and 346 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 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) [2022-11-20 12:24:38,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:38,642 INFO L93 Difference]: Finished difference Result 266 states and 351 transitions. [2022-11-20 12:24:38,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:24:38,642 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 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 38 [2022-11-20 12:24:38,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:38,643 INFO L225 Difference]: With dead ends: 266 [2022-11-20 12:24:38,644 INFO L226 Difference]: Without dead ends: 266 [2022-11-20 12:24:38,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:24:38,644 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 136 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:38,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 146 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:24:38,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-20 12:24:38,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 250. [2022-11-20 12:24:38,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 235 states have (on average 1.4638297872340424) internal successors, (344), 249 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:38,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 344 transitions. [2022-11-20 12:24:38,649 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 344 transitions. Word has length 38 [2022-11-20 12:24:38,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:38,650 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 344 transitions. [2022-11-20 12:24:38,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 6 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) [2022-11-20 12:24:38,650 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 344 transitions. [2022-11-20 12:24:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 12:24:38,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:38,651 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:38,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:38,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:38,863 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:38,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:38,863 INFO L85 PathProgramCache]: Analyzing trace with hash -716826511, now seen corresponding path program 1 times [2022-11-20 12:24:38,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:38,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380043682] [2022-11-20 12:24:38,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:38,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:38,887 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:38,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [940182248] [2022-11-20 12:24:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:38,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:38,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:38,889 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:38,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:24:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:39,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:24:39,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:39,168 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-20 12:24:39,168 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:39,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:39,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380043682] [2022-11-20 12:24:39,168 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:39,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940182248] [2022-11-20 12:24:39,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940182248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:39,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:39,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:24:39,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486956358] [2022-11-20 12:24:39,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:39,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:24:39,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:39,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:24:39,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:39,171 INFO L87 Difference]: Start difference. First operand 250 states and 344 transitions. Second operand has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 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) [2022-11-20 12:24:39,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:39,269 INFO L93 Difference]: Finished difference Result 258 states and 340 transitions. [2022-11-20 12:24:39,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:24:39,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 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 41 [2022-11-20 12:24:39,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:39,271 INFO L225 Difference]: With dead ends: 258 [2022-11-20 12:24:39,271 INFO L226 Difference]: Without dead ends: 258 [2022-11-20 12:24:39,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:24:39,272 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 126 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:39,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 134 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:24:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-20 12:24:39,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 230. [2022-11-20 12:24:39,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 215 states have (on average 1.4186046511627908) internal successors, (305), 229 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:39,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 305 transitions. [2022-11-20 12:24:39,277 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 305 transitions. Word has length 41 [2022-11-20 12:24:39,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:39,277 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 305 transitions. [2022-11-20 12:24:39,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.75) internal successors, (39), 5 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) [2022-11-20 12:24:39,277 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 305 transitions. [2022-11-20 12:24:39,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 12:24:39,278 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:39,278 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:39,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:39,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:39,485 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:39,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:39,485 INFO L85 PathProgramCache]: Analyzing trace with hash -716826470, now seen corresponding path program 1 times [2022-11-20 12:24:39,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:39,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278853711] [2022-11-20 12:24:39,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:39,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:39,505 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:39,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [723413285] [2022-11-20 12:24:39,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:39,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:39,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:39,507 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:39,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:24:39,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:39,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 12:24:39,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:39,742 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 [2022-11-20 12:24:39,798 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 [2022-11-20 12:24:39,927 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 [2022-11-20 12:24:39,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:39,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:39,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:39,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278853711] [2022-11-20 12:24:39,947 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:39,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [723413285] [2022-11-20 12:24:39,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [723413285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:39,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:39,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 12:24:39,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447533280] [2022-11-20 12:24:39,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:39,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 12:24:39,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:39,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 12:24:39,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-20 12:24:39,949 INFO L87 Difference]: Start difference. First operand 230 states and 305 transitions. Second operand has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:40,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:40,442 INFO L93 Difference]: Finished difference Result 314 states and 400 transitions. [2022-11-20 12:24:40,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:24:40,443 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-11-20 12:24:40,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:40,444 INFO L225 Difference]: With dead ends: 314 [2022-11-20 12:24:40,445 INFO L226 Difference]: Without dead ends: 314 [2022-11-20 12:24:40,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:24:40,445 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 159 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 248 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:40,446 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 248 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:24:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-11-20 12:24:40,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 244. [2022-11-20 12:24:40,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 229 states have (on average 1.4235807860262009) internal successors, (326), 243 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) [2022-11-20 12:24:40,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 326 transitions. [2022-11-20 12:24:40,452 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 326 transitions. Word has length 41 [2022-11-20 12:24:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:40,453 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 326 transitions. [2022-11-20 12:24:40,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.125) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 326 transitions. [2022-11-20 12:24:40,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-20 12:24:40,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:40,454 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:40,461 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:40,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-20 12:24:40,661 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:40,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:40,662 INFO L85 PathProgramCache]: Analyzing trace with hash -716826469, now seen corresponding path program 1 times [2022-11-20 12:24:40,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:40,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932874264] [2022-11-20 12:24:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:40,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:40,683 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:40,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363566158] [2022-11-20 12:24:40,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:40,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:40,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:40,685 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:40,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:24:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:40,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-20 12:24:40,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:41,006 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 [2022-11-20 12:24:41,017 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 [2022-11-20 12:24:41,166 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 [2022-11-20 12:24:41,173 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 [2022-11-20 12:24:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:41,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:41,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:41,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932874264] [2022-11-20 12:24:41,214 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:41,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363566158] [2022-11-20 12:24:41,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363566158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:41,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:41,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:24:41,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409748673] [2022-11-20 12:24:41,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:41,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:24:41,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:41,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:24:41,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:24:41,217 INFO L87 Difference]: Start difference. First operand 244 states and 326 transitions. Second operand has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:41,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:41,907 INFO L93 Difference]: Finished difference Result 343 states and 440 transitions. [2022-11-20 12:24:41,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:24:41,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-11-20 12:24:41,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:41,909 INFO L225 Difference]: With dead ends: 343 [2022-11-20 12:24:41,909 INFO L226 Difference]: Without dead ends: 343 [2022-11-20 12:24:41,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:24:41,910 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 255 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:41,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 370 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:24:41,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-11-20 12:24:41,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 244. [2022-11-20 12:24:41,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 229 states have (on average 1.4148471615720524) internal successors, (324), 243 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:41,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 324 transitions. [2022-11-20 12:24:41,916 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 324 transitions. Word has length 41 [2022-11-20 12:24:41,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:41,917 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 324 transitions. [2022-11-20 12:24:41,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.555555555555555) internal successors, (41), 10 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:41,917 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 324 transitions. [2022-11-20 12:24:41,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 12:24:41,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:41,918 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:41,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-11-20 12:24:42,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-20 12:24:42,125 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:42,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:42,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1675466949, now seen corresponding path program 1 times [2022-11-20 12:24:42,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:42,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234355017] [2022-11-20 12:24:42,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:42,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:42,162 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:42,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [891547877] [2022-11-20 12:24:42,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:42,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:42,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:42,164 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:42,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:24:42,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:42,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:24:42,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 12:24:42,418 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:42,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:42,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234355017] [2022-11-20 12:24:42,418 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:42,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891547877] [2022-11-20 12:24:42,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891547877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:42,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:42,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:24:42,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419219871] [2022-11-20 12:24:42,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:42,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:24:42,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:42,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:24:42,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:24:42,421 INFO L87 Difference]: Start difference. First operand 244 states and 324 transitions. Second operand has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 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) [2022-11-20 12:24:42,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:42,502 INFO L93 Difference]: Finished difference Result 266 states and 347 transitions. [2022-11-20 12:24:42,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:24:42,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 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 43 [2022-11-20 12:24:42,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:42,504 INFO L225 Difference]: With dead ends: 266 [2022-11-20 12:24:42,504 INFO L226 Difference]: Without dead ends: 266 [2022-11-20 12:24:42,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:24:42,505 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 17 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:42,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 157 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:24:42,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-20 12:24:42,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 242. [2022-11-20 12:24:42,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 229 states have (on average 1.3755458515283843) internal successors, (315), 241 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:24:42,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 315 transitions. [2022-11-20 12:24:42,512 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 315 transitions. Word has length 43 [2022-11-20 12:24:42,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:42,512 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 315 transitions. [2022-11-20 12:24:42,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.0) internal successors, (39), 4 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) [2022-11-20 12:24:42,513 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 315 transitions. [2022-11-20 12:24:42,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-20 12:24:42,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:42,513 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:24:42,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:24:42,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:42,720 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:42,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:42,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1675466948, now seen corresponding path program 1 times [2022-11-20 12:24:42,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:42,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647776910] [2022-11-20 12:24:42,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:42,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:42,746 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:24:42,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490565917] [2022-11-20 12:24:42,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:42,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:42,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:42,748 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:42,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 12:24:42,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:42,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 12:24:43,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:43,062 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 [2022-11-20 12:24:43,070 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 [2022-11-20 12:24:43,180 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 23 treesize of output 15 [2022-11-20 12:24:43,184 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 [2022-11-20 12:24:43,271 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:43,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:24:43,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:43,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647776910] [2022-11-20 12:24:43,272 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:24:43,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490565917] [2022-11-20 12:24:43,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490565917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:24:43,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:24:43,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:24:43,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442015215] [2022-11-20 12:24:43,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:24:43,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:24:43,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:24:43,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:24:43,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:24:43,274 INFO L87 Difference]: Start difference. First operand 242 states and 315 transitions. Second operand has 11 states, 10 states have (on average 4.3) internal successors, (43), 11 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) [2022-11-20 12:24:44,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:24:44,228 INFO L93 Difference]: Finished difference Result 385 states and 483 transitions. [2022-11-20 12:24:44,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:24:44,229 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 11 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 43 [2022-11-20 12:24:44,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:24:44,230 INFO L225 Difference]: With dead ends: 385 [2022-11-20 12:24:44,231 INFO L226 Difference]: Without dead ends: 385 [2022-11-20 12:24:44,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:24:44,232 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 304 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:24:44,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 468 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 12:24:44,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-20 12:24:44,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 246. [2022-11-20 12:24:44,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 233 states have (on average 1.3690987124463518) internal successors, (319), 245 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) [2022-11-20 12:24:44,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 319 transitions. [2022-11-20 12:24:44,239 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 319 transitions. Word has length 43 [2022-11-20 12:24:44,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:24:44,239 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 319 transitions. [2022-11-20 12:24:44,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 11 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) [2022-11-20 12:24:44,240 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 319 transitions. [2022-11-20 12:24:44,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 12:24:44,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:24:44,240 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-20 12:24:44,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-20 12:24:44,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:44,447 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:24:44,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:24:44,448 INFO L85 PathProgramCache]: Analyzing trace with hash 829486443, now seen corresponding path program 1 times [2022-11-20 12:24:44,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:24:44,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650406691] [2022-11-20 12:24:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:44,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:24:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:45,255 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:45,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:24:45,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650406691] [2022-11-20 12:24:45,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650406691] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:24:45,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498547954] [2022-11-20 12:24:45,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:24:45,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:24:45,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:24:45,260 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:24:45,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 12:24:45,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:24:45,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-20 12:24:45,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:24:45,531 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 [2022-11-20 12:24:45,551 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 [2022-11-20 12:24:45,559 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 [2022-11-20 12:24:45,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:45,602 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 [2022-11-20 12:24:45,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:45,611 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 [2022-11-20 12:24:45,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:45,625 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 [2022-11-20 12:24:45,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:24:45,637 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 [2022-11-20 12:24:45,791 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:24:45,791 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 [2022-11-20 12:24:45,892 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 [2022-11-20 12:24:45,904 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 [2022-11-20 12:24:45,926 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 [2022-11-20 12:24:45,946 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 [2022-11-20 12:24:45,967 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 [2022-11-20 12:24:45,984 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 [2022-11-20 12:24:46,004 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 [2022-11-20 12:24:46,012 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 14 treesize of output 16 [2022-11-20 12:24:46,040 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 [2022-11-20 12:24:46,065 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 14 treesize of output 16 [2022-11-20 12:24:46,235 INFO L321 Elim1Store]: treesize reduction 15, result has 46.4 percent of original size [2022-11-20 12:24:46,235 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 21 treesize of output 26 [2022-11-20 12:24:46,271 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-11-20 12:24:46,272 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 21 treesize of output 20 [2022-11-20 12:24:46,367 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 41 treesize of output 39 [2022-11-20 12:24:46,375 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 48 [2022-11-20 12:24:46,733 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:24:46,736 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 72 treesize of output 68 [2022-11-20 12:24:46,750 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:24:46,750 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 2 new quantified variables, introduced 2 case distinctions, treesize of input 59 treesize of output 41 [2022-11-20 12:24:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:24:46,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:24:47,195 WARN L837 $PredicateComparison]: unable to prove that (and (or (forall ((v_ArrVal_2269 (Array Int Int))) (= (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2269) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|)) 1)) (forall ((v_ArrVal_2268 (Array Int Int))) (= |c_ULTIMATE.start_main_~first~0#1.offset| (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2268) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|)))) (forall ((v_ArrVal_2269 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_2269) |c_ULTIMATE.start_main_~first~0#1.base|) |c_ULTIMATE.start_main_~first~0#1.offset|))) (or (= .cse0 |c_ULTIMATE.start_main_~first~0#1.base|) (= (select |c_#valid| .cse0) 1))))) is different from false [2022-11-20 12:24:58,412 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 12:24:58,412 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 28 treesize of output 34 [2022-11-20 12:24:58,426 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-11-20 12:24:58,426 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 105 treesize of output 65 [2022-11-20 12:24:58,432 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 [2022-11-20 12:24:58,436 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 10 treesize of output 8 [2022-11-20 12:24:58,460 INFO L321 Elim1Store]: treesize reduction 21, result has 47.5 percent of original size [2022-11-20 12:24:58,460 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 44 [2022-11-20 12:24:58,468 INFO L321 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-20 12:24:58,468 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 109 treesize of output 55 [2022-11-20 12:24:58,476 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 16 treesize of output 12 [2022-11-20 12:25:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:02,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498547954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:25:02,629 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:25:02,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 30 [2022-11-20 12:25:02,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166565744] [2022-11-20 12:25:02,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:02,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-20 12:25:02,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:02,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-20 12:25:02,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=762, Unknown=4, NotChecked=56, Total=930 [2022-11-20 12:25:02,632 INFO L87 Difference]: Start difference. First operand 246 states and 319 transitions. Second operand has 31 states, 30 states have (on average 4.166666666666667) internal successors, (125), 31 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:06,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:06,808 INFO L93 Difference]: Finished difference Result 321 states and 411 transitions. [2022-11-20 12:25:06,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-20 12:25:06,808 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 4.166666666666667) internal successors, (125), 31 states have internal predecessors, (125), 0 states have call successors, (0), 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 45 [2022-11-20 12:25:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:06,810 INFO L225 Difference]: With dead ends: 321 [2022-11-20 12:25:06,810 INFO L226 Difference]: Without dead ends: 321 [2022-11-20 12:25:06,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 78 SyntacticMatches, 8 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 606 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=321, Invalid=1928, Unknown=11, NotChecked=92, Total=2352 [2022-11-20 12:25:06,815 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 151 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 484 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:06,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 885 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 570 Invalid, 0 Unknown, 484 Unchecked, 0.6s Time] [2022-11-20 12:25:06,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-20 12:25:06,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 289. [2022-11-20 12:25:06,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 276 states have (on average 1.355072463768116) internal successors, (374), 288 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:06,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 374 transitions. [2022-11-20 12:25:06,824 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 374 transitions. Word has length 45 [2022-11-20 12:25:06,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:06,824 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 374 transitions. [2022-11-20 12:25:06,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 4.166666666666667) internal successors, (125), 31 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:06,825 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 374 transitions. [2022-11-20 12:25:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 12:25:06,825 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:06,826 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-20 12:25:06,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-11-20 12:25:07,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:07,034 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:25:07,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:07,035 INFO L85 PathProgramCache]: Analyzing trace with hash 829486444, now seen corresponding path program 1 times [2022-11-20 12:25:07,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:07,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899107486] [2022-11-20 12:25:07,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:07,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:08,152 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:08,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:08,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899107486] [2022-11-20 12:25:08,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899107486] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:25:08,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388481417] [2022-11-20 12:25:08,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:08,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:08,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:25:08,168 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:25:08,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 12:25:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:08,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-20 12:25:08,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:08,442 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 [2022-11-20 12:25:08,466 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 [2022-11-20 12:25:08,476 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 [2022-11-20 12:25:08,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,488 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 [2022-11-20 12:25:08,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,501 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 [2022-11-20 12:25:08,514 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,515 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 [2022-11-20 12:25:08,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:08,526 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 [2022-11-20 12:25:08,696 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:25:08,696 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 [2022-11-20 12:25:08,780 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 [2022-11-20 12:25:08,789 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 [2022-11-20 12:25:08,812 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 [2022-11-20 12:25:08,821 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 [2022-11-20 12:25:08,835 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 [2022-11-20 12:25:08,847 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 [2022-11-20 12:25:08,871 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 [2022-11-20 12:25:08,893 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 [2022-11-20 12:25:08,910 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 14 treesize of output 16 [2022-11-20 12:25:08,921 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 [2022-11-20 12:25:09,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:09,082 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 [2022-11-20 12:25:09,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:09,090 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 [2022-11-20 12:25:09,143 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 [2022-11-20 12:25:09,148 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 [2022-11-20 12:25:09,277 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:25:09,278 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 [2022-11-20 12:25:09,288 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:25:09,288 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 [2022-11-20 12:25:09,356 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:09,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:40,789 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:25:40,789 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 3 case distinctions, treesize of input 62 treesize of output 55 [2022-11-20 12:25:40,797 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 [2022-11-20 12:25:40,803 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:25:40,806 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 [2022-11-20 12:25:40,813 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 [2022-11-20 12:25:40,824 INFO L321 Elim1Store]: treesize reduction 28, result has 3.4 percent of original size [2022-11-20 12:25:40,824 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 3 case distinctions, treesize of input 62 treesize of output 1 [2022-11-20 12:25:40,910 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:40,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388481417] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:25:40,910 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:25:40,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 14] total 27 [2022-11-20 12:25:40,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626218738] [2022-11-20 12:25:40,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:40,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 12:25:40,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:40,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 12:25:40,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=593, Unknown=14, NotChecked=0, Total=702 [2022-11-20 12:25:40,912 INFO L87 Difference]: Start difference. First operand 289 states and 374 transitions. Second operand has 27 states, 27 states have (on average 3.925925925925926) internal successors, (106), 27 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:42,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:42,054 INFO L93 Difference]: Finished difference Result 322 states and 405 transitions. [2022-11-20 12:25:42,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-20 12:25:42,057 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.925925925925926) internal successors, (106), 27 states have internal predecessors, (106), 0 states have call successors, (0), 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 45 [2022-11-20 12:25:42,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:42,059 INFO L225 Difference]: With dead ends: 322 [2022-11-20 12:25:42,059 INFO L226 Difference]: Without dead ends: 322 [2022-11-20 12:25:42,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 92 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 31.8s TimeCoverageRelationStatistics Valid=289, Invalid=1503, Unknown=14, NotChecked=0, Total=1806 [2022-11-20 12:25:42,061 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 275 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 400 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:42,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 654 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 459 Invalid, 0 Unknown, 400 Unchecked, 0.5s Time] [2022-11-20 12:25:42,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-20 12:25:42,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 289. [2022-11-20 12:25:42,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 276 states have (on average 1.355072463768116) internal successors, (374), 288 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:42,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 374 transitions. [2022-11-20 12:25:42,067 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 374 transitions. Word has length 45 [2022-11-20 12:25:42,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:42,068 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 374 transitions. [2022-11-20 12:25:42,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.925925925925926) internal successors, (106), 27 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:42,068 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 374 transitions. [2022-11-20 12:25:42,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-20 12:25:42,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:42,069 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:42,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:42,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-20 12:25:42,276 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:25:42,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:42,276 INFO L85 PathProgramCache]: Analyzing trace with hash 489001563, now seen corresponding path program 1 times [2022-11-20 12:25:42,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:42,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385090856] [2022-11-20 12:25:42,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:42,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:42,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:25:42,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1615647388] [2022-11-20 12:25:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:42,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:42,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:25:42,298 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:25:42,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 12:25:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:42,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:25:42,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:42,650 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 [2022-11-20 12:25:42,747 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 [2022-11-20 12:25:42,798 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:42,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:25:42,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:42,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385090856] [2022-11-20 12:25:42,798 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:25:42,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615647388] [2022-11-20 12:25:42,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615647388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:25:42,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:25:42,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:25:42,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103324678] [2022-11-20 12:25:42,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:25:42,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:25:42,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:42,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:25:42,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:25:42,800 INFO L87 Difference]: Start difference. First operand 289 states and 374 transitions. Second operand has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:43,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:43,423 INFO L93 Difference]: Finished difference Result 420 states and 530 transitions. [2022-11-20 12:25:43,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 12:25:43,424 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-11-20 12:25:43,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:43,426 INFO L225 Difference]: With dead ends: 420 [2022-11-20 12:25:43,426 INFO L226 Difference]: Without dead ends: 420 [2022-11-20 12:25:43,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:25:43,427 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 335 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:43,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 363 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-20 12:25:43,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-11-20 12:25:43,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 320. [2022-11-20 12:25:43,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 307 states have (on average 1.3583061889250814) internal successors, (417), 319 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 417 transitions. [2022-11-20 12:25:43,435 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 417 transitions. Word has length 45 [2022-11-20 12:25:43,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:43,435 INFO L495 AbstractCegarLoop]: Abstraction has 320 states and 417 transitions. [2022-11-20 12:25:43,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.0) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:43,436 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 417 transitions. [2022-11-20 12:25:43,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:25:43,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:43,437 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-20 12:25:43,443 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:43,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-20 12:25:43,643 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:25:43,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:43,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1360903564, now seen corresponding path program 2 times [2022-11-20 12:25:43,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:43,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973819470] [2022-11-20 12:25:43,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:43,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:43,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:43,727 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:25:43,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:43,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973819470] [2022-11-20 12:25:43,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973819470] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:25:43,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76695173] [2022-11-20 12:25:43,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:25:43,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:43,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:25:43,730 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:25:43,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 12:25:44,011 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:25:44,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:25:44,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:25:44,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:25:44,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 12:25:44,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76695173] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:25:44,111 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:25:44,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2022-11-20 12:25:44,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005285138] [2022-11-20 12:25:44,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:44,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:25:44,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:44,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:25:44,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:25:44,116 INFO L87 Difference]: Start difference. First operand 320 states and 417 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:44,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:44,208 INFO L93 Difference]: Finished difference Result 301 states and 382 transitions. [2022-11-20 12:25:44,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:25:44,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 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 [2022-11-20 12:25:44,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:44,210 INFO L225 Difference]: With dead ends: 301 [2022-11-20 12:25:44,210 INFO L226 Difference]: Without dead ends: 301 [2022-11-20 12:25:44,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:25:44,210 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 80 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:44,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 124 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:25:44,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2022-11-20 12:25:44,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 279. [2022-11-20 12:25:44,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 266 states have (on average 1.3421052631578947) internal successors, (357), 278 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:44,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 357 transitions. [2022-11-20 12:25:44,217 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 357 transitions. Word has length 46 [2022-11-20 12:25:44,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:44,218 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 357 transitions. [2022-11-20 12:25:44,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:44,218 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 357 transitions. [2022-11-20 12:25:44,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:25:44,219 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:44,219 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:44,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:44,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-11-20 12:25:44,427 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:25:44,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:44,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1178585278, now seen corresponding path program 1 times [2022-11-20 12:25:44,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:44,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215283827] [2022-11-20 12:25:44,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:44,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:44,446 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:25:44,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [982373248] [2022-11-20 12:25:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:44,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:44,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:25:44,448 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:25:44,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 12:25:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:44,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-20 12:25:44,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:44,795 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 [2022-11-20 12:25:44,864 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:25:44,865 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 [2022-11-20 12:25:44,929 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 [2022-11-20 12:25:45,002 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:25:45,002 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 [2022-11-20 12:25:45,093 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:45,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:45,220 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 [2022-11-20 12:25:45,223 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 [2022-11-20 12:25:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:45,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:45,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215283827] [2022-11-20 12:25:45,383 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:25:45,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982373248] [2022-11-20 12:25:45,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982373248] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:25:45,383 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:25:45,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 13 [2022-11-20 12:25:45,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695053545] [2022-11-20 12:25:45,384 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:45,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:25:45,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:45,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:25:45,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:25:45,385 INFO L87 Difference]: Start difference. First operand 279 states and 357 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 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) [2022-11-20 12:25:46,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:25:46,035 INFO L93 Difference]: Finished difference Result 328 states and 392 transitions. [2022-11-20 12:25:46,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:25:46,036 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 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 46 [2022-11-20 12:25:46,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:25:46,037 INFO L225 Difference]: With dead ends: 328 [2022-11-20 12:25:46,037 INFO L226 Difference]: Without dead ends: 327 [2022-11-20 12:25:46,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2022-11-20 12:25:46,039 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 189 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:25:46,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 460 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 431 Invalid, 0 Unknown, 27 Unchecked, 0.4s Time] [2022-11-20 12:25:46,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-20 12:25:46,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 279. [2022-11-20 12:25:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 266 states have (on average 1.3383458646616542) internal successors, (356), 278 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:25:46,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 356 transitions. [2022-11-20 12:25:46,046 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 356 transitions. Word has length 46 [2022-11-20 12:25:46,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:25:46,046 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 356 transitions. [2022-11-20 12:25:46,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 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) [2022-11-20 12:25:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 356 transitions. [2022-11-20 12:25:46,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:25:46,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:25:46,048 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:25:46,059 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-20 12:25:46,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-20 12:25:46,255 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:25:46,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:25:46,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2020813251, now seen corresponding path program 1 times [2022-11-20 12:25:46,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:25:46,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858095822] [2022-11-20 12:25:46,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:46,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:25:46,288 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:25:46,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1061873281] [2022-11-20 12:25:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:25:46,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:25:46,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:25:46,290 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:25:46,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-20 12:25:46,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:25:46,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 59 conjunts are in the unsatisfiable core [2022-11-20 12:25:46,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:25:46,589 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 [2022-11-20 12:25:46,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:46,608 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 21 treesize of output 20 [2022-11-20 12:25:46,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:46,625 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 [2022-11-20 12:25:46,720 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:25:46,720 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 [2022-11-20 12:25:46,862 INFO L321 Elim1Store]: treesize reduction 29, result has 38.3 percent of original size [2022-11-20 12:25:46,863 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 [2022-11-20 12:25:46,870 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 [2022-11-20 12:25:46,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:46,916 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 [2022-11-20 12:25:46,957 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:46,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:25:46,960 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:25:46,960 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 34 treesize of output 36 [2022-11-20 12:25:46,983 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 [2022-11-20 12:25:47,004 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:25:47,004 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 2 case distinctions, treesize of input 30 treesize of output 36 [2022-11-20 12:25:47,297 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 [2022-11-20 12:25:47,463 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:25:47,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 42 treesize of output 17 [2022-11-20 12:25:47,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:47,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:25:47,720 INFO L321 Elim1Store]: treesize reduction 5, result has 75.0 percent of original size [2022-11-20 12:25:47,720 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 23 [2022-11-20 12:25:54,563 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_2982 (Array Int Int)) (v_ArrVal_2979 Int)) (= (select (select (let ((.cse0 (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse2 (select .cse3 |c_ULTIMATE.start_main_~x~0#1.offset|))) (store (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse3 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 8) v_ArrVal_2979)))) (store .cse1 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse1 |ULTIMATE.start_main_~y~0#1.base|) 0 .cse2))) .cse2 v_ArrVal_2982))))) (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|) 0) |c_ULTIMATE.start_main_~x~0#1.base|)) is different from false [2022-11-20 12:25:54,577 WARN L837 $PredicateComparison]: unable to prove that (forall ((|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_2982 (Array Int Int)) (v_ArrVal_2977 Int) (v_ArrVal_2979 Int)) (= (select (select (let ((.cse0 (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse2 (select .cse3 |c_ULTIMATE.start_main_~x~0#1.offset|))) (store (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse3 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 4) v_ArrVal_2977) (+ |c_ULTIMATE.start_main_~x~0#1.offset| 8) v_ArrVal_2979)))) (store .cse1 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse1 |ULTIMATE.start_main_~y~0#1.base|) 0 .cse2))) .cse2 v_ArrVal_2982))))) (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|) 0) |c_ULTIMATE.start_main_~x~0#1.base|)) is different from false [2022-11-20 12:25:54,664 INFO L321 Elim1Store]: treesize reduction 73, result has 41.1 percent of original size [2022-11-20 12:25:54,664 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 [2022-11-20 12:25:54,694 INFO L321 Elim1Store]: treesize reduction 17, result has 55.3 percent of original size [2022-11-20 12:25:54,694 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 87 treesize of output 67 [2022-11-20 12:25:54,703 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 14 treesize of output 12 [2022-11-20 12:25:54,721 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:25:54,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:25:54,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858095822] [2022-11-20 12:25:54,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:25:54,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1061873281] [2022-11-20 12:25:54,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1061873281] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:25:54,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:25:54,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 33 [2022-11-20 12:25:54,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393251765] [2022-11-20 12:25:54,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:25:54,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 12:25:54,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:25:54,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 12:25:54,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=838, Unknown=49, NotChecked=122, Total=1122 [2022-11-20 12:25:54,724 INFO L87 Difference]: Start difference. First operand 279 states and 356 transitions. Second operand has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:01,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:01,005 INFO L93 Difference]: Finished difference Result 426 states and 539 transitions. [2022-11-20 12:26:01,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 12:26:01,006 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 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 [2022-11-20 12:26:01,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:01,007 INFO L225 Difference]: With dead ends: 426 [2022-11-20 12:26:01,008 INFO L226 Difference]: Without dead ends: 426 [2022-11-20 12:26:01,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 57 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=267, Invalid=2032, Unknown=61, NotChecked=190, Total=2550 [2022-11-20 12:26:01,009 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 224 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 1143 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1388 SdHoareTripleChecker+Invalid, 1861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 700 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:01,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1388 Invalid, 1861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1143 Invalid, 0 Unknown, 700 Unchecked, 1.2s Time] [2022-11-20 12:26:01,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-11-20 12:26:01,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 289. [2022-11-20 12:26:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 276 states have (on average 1.3369565217391304) internal successors, (369), 288 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:01,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 369 transitions. [2022-11-20 12:26:01,017 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 369 transitions. Word has length 46 [2022-11-20 12:26:01,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:01,017 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 369 transitions. [2022-11-20 12:26:01,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.393939393939394) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:01,017 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 369 transitions. [2022-11-20 12:26:01,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:26:01,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:01,018 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:01,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:01,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-11-20 12:26:01,225 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:26:01,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:01,226 INFO L85 PathProgramCache]: Analyzing trace with hash -2020813250, now seen corresponding path program 1 times [2022-11-20 12:26:01,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:01,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818696901] [2022-11-20 12:26:01,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:01,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:01,244 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:26:01,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2114779614] [2022-11-20 12:26:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:01,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:01,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:01,246 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:26:01,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-20 12:26:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:01,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-20 12:26:01,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:01,616 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 [2022-11-20 12:26:01,622 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 [2022-11-20 12:26:01,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:01,651 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 [2022-11-20 12:26:01,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:01,661 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 [2022-11-20 12:26:01,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:01,679 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 [2022-11-20 12:26:01,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:01,688 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 21 treesize of output 20 [2022-11-20 12:26:01,829 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:26:01,829 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 [2022-11-20 12:26:01,868 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-20 12:26:01,868 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 [2022-11-20 12:26:02,014 INFO L321 Elim1Store]: treesize reduction 29, result has 38.3 percent of original size [2022-11-20 12:26:02,014 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 35 treesize of output 46 [2022-11-20 12:26:02,047 INFO L321 Elim1Store]: treesize reduction 12, result has 64.7 percent of original size [2022-11-20 12:26:02,047 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 [2022-11-20 12:26:02,082 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 [2022-11-20 12:26:02,101 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 [2022-11-20 12:26:02,111 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 [2022-11-20 12:26:02,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:02,197 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 [2022-11-20 12:26:02,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:02,202 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 [2022-11-20 12:26:02,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:02,225 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 [2022-11-20 12:26:02,229 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:02,230 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 [2022-11-20 12:26:02,270 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:26:02,270 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 [2022-11-20 12:26:02,293 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-11-20 12:26:02,293 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 30 [2022-11-20 12:26:02,680 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:26:02,690 INFO L321 Elim1Store]: treesize reduction 22, result has 12.0 percent of original size [2022-11-20 12:26:02,690 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 [2022-11-20 12:26:02,715 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 12:26:02,715 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 [2022-11-20 12:26:02,786 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:02,787 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:26:09,200 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse7 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 8)) (.cse4 (select .cse7 |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_3135 (Array Int Int)) (v_ArrVal_3127 Int)) (= |c_ULTIMATE.start_main_~x~0#1.offset| (select (select (let ((.cse0 (store (let ((.cse2 (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse1 (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse2 .cse3 v_ArrVal_3127)))) (store .cse1 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse1 |ULTIMATE.start_main_~y~0#1.base|) 0 (select .cse2 |c_ULTIMATE.start_main_~x~0#1.offset|))))) .cse4 v_ArrVal_3135))) (store .cse0 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| 0))) |ULTIMATE.start_main_~y~0#1.base|) 0))) (forall ((v_ArrVal_3129 Int) (|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_3136 (Array Int Int))) (= (select (select (let ((.cse5 (store (let ((.cse6 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store .cse7 .cse3 v_ArrVal_3129)))) (store .cse6 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse6 |ULTIMATE.start_main_~y~0#1.base|) 0 .cse4))) .cse4 v_ArrVal_3136))) (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| |ULTIMATE.start_main_~y~0#1.base|))) |ULTIMATE.start_main_~y~0#1.base|) 0) |c_ULTIMATE.start_main_~x~0#1.base|))))) is different from false [2022-11-20 12:26:09,229 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse3 (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base|))) (let ((.cse4 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 4)) (.cse5 (+ |c_ULTIMATE.start_main_~x~0#1.offset| 8)) (.cse2 (select .cse3 |c_ULTIMATE.start_main_~x~0#1.offset|))) (and (forall ((v_ArrVal_3129 Int) (v_ArrVal_3126 Int) (|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_3136 (Array Int Int))) (= (select (select (let ((.cse0 (store (let ((.cse1 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| (store (store .cse3 .cse4 v_ArrVal_3126) .cse5 v_ArrVal_3129)))) (store .cse1 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse1 |ULTIMATE.start_main_~y~0#1.base|) 0 .cse2))) .cse2 v_ArrVal_3136))) (store .cse0 |c_ULTIMATE.start_main_~x~0#1.base| (store (select .cse0 |c_ULTIMATE.start_main_~x~0#1.base|) |c_ULTIMATE.start_main_~x~0#1.offset| |ULTIMATE.start_main_~y~0#1.base|))) |ULTIMATE.start_main_~y~0#1.base|) 0) |c_ULTIMATE.start_main_~x~0#1.base|)) (forall ((|ULTIMATE.start_main_~y~0#1.base| Int) (v_ArrVal_3135 (Array Int Int)) (v_ArrVal_3127 Int) (v_ArrVal_3124 Int)) (= (select (select (let ((.cse6 (store (let ((.cse8 (select |c_#memory_$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_3124) .cse5 v_ArrVal_3127)))) (store .cse7 |ULTIMATE.start_main_~y~0#1.base| (store (select .cse7 |ULTIMATE.start_main_~y~0#1.base|) 0 (select .cse8 |c_ULTIMATE.start_main_~x~0#1.offset|))))) .cse2 v_ArrVal_3135))) (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| 0))) |ULTIMATE.start_main_~y~0#1.base|) 0) |c_ULTIMATE.start_main_~x~0#1.offset|))))) is different from false [2022-11-20 12:26:09,312 INFO L321 Elim1Store]: treesize reduction 73, result has 41.1 percent of original size [2022-11-20 12:26:09,313 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 [2022-11-20 12:26:09,322 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:09,323 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 13 treesize of output 17 [2022-11-20 12:26:09,380 INFO L321 Elim1Store]: treesize reduction 17, result has 55.3 percent of original size [2022-11-20 12:26:09,381 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 6 case distinctions, treesize of input 72 treesize of output 68 [2022-11-20 12:26:09,401 INFO L321 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-11-20 12:26:09,401 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 12 treesize of output 11 [2022-11-20 12:26:09,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:26:09,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:26:09,414 INFO L321 Elim1Store]: treesize reduction 53, result has 1.9 percent of original size [2022-11-20 12:26:09,414 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 [2022-11-20 12:26:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:09,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:09,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818696901] [2022-11-20 12:26:09,422 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:26:09,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114779614] [2022-11-20 12:26:09,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114779614] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:26:09,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:26:09,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 19] total 33 [2022-11-20 12:26:09,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282670888] [2022-11-20 12:26:09,423 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:26:09,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-20 12:26:09,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:09,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-20 12:26:09,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=760, Unknown=51, NotChecked=118, Total=1056 [2022-11-20 12:26:09,425 INFO L87 Difference]: Start difference. First operand 289 states and 369 transitions. Second operand has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 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) [2022-11-20 12:26:10,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:10,341 INFO L93 Difference]: Finished difference Result 343 states and 424 transitions. [2022-11-20 12:26:10,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:26:10,341 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 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 46 [2022-11-20 12:26:10,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:10,343 INFO L225 Difference]: With dead ends: 343 [2022-11-20 12:26:10,343 INFO L226 Difference]: Without dead ends: 343 [2022-11-20 12:26:10,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 59 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=191, Invalid=1166, Unknown=57, NotChecked=146, Total=1560 [2022-11-20 12:26:10,344 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 172 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 329 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:10,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 844 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 398 Invalid, 0 Unknown, 329 Unchecked, 0.5s Time] [2022-11-20 12:26:10,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-11-20 12:26:10,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 292. [2022-11-20 12:26:10,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 279 states have (on average 1.3297491039426523) internal successors, (371), 291 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:10,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 371 transitions. [2022-11-20 12:26:10,350 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 371 transitions. Word has length 46 [2022-11-20 12:26:10,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:10,351 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 371 transitions. [2022-11-20 12:26:10,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 2.515151515151515) internal successors, (83), 33 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) [2022-11-20 12:26:10,351 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 371 transitions. [2022-11-20 12:26:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-20 12:26:10,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:10,351 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:10,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:10,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-20 12:26:10,552 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:26:10,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:10,552 INFO L85 PathProgramCache]: Analyzing trace with hash -2020820556, now seen corresponding path program 1 times [2022-11-20 12:26:10,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:10,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188735612] [2022-11-20 12:26:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:10,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:10,578 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:26:10,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250613334] [2022-11-20 12:26:10,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:10,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:10,579 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:10,580 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:26:10,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-20 12:26:10,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:10,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 12:26:10,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:10,978 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 [2022-11-20 12:26:11,090 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 [2022-11-20 12:26:11,150 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:11,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:26:11,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:11,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188735612] [2022-11-20 12:26:11,151 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:26:11,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250613334] [2022-11-20 12:26:11,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250613334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:26:11,152 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:26:11,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 12:26:11,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233431780] [2022-11-20 12:26:11,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:26:11,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:26:11,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:11,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:26:11,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:26:11,154 INFO L87 Difference]: Start difference. First operand 292 states and 371 transitions. Second operand has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:11,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:11,929 INFO L93 Difference]: Finished difference Result 355 states and 433 transitions. [2022-11-20 12:26:11,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 12:26:11,930 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 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 [2022-11-20 12:26:11,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:11,932 INFO L225 Difference]: With dead ends: 355 [2022-11-20 12:26:11,932 INFO L226 Difference]: Without dead ends: 355 [2022-11-20 12:26:11,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:26:11,933 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 194 mSDsluCounter, 391 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:11,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 462 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:26:11,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2022-11-20 12:26:11,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 293. [2022-11-20 12:26:11,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 280 states have (on average 1.325) internal successors, (371), 292 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:11,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 371 transitions. [2022-11-20 12:26:11,941 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 371 transitions. Word has length 46 [2022-11-20 12:26:11,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:11,942 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 371 transitions. [2022-11-20 12:26:11,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.111111111111111) internal successors, (46), 10 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 371 transitions. [2022-11-20 12:26:11,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 12:26:11,943 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:11,943 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1] [2022-11-20 12:26:11,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:12,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2022-11-20 12:26:12,151 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:26:12,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:12,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2045271335, now seen corresponding path program 1 times [2022-11-20 12:26:12,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:12,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339706298] [2022-11-20 12:26:12,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:12,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:12,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:12,804 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:12,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:12,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339706298] [2022-11-20 12:26:12,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339706298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:26:12,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379248254] [2022-11-20 12:26:12,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:12,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:12,805 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:12,808 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:26:12,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-20 12:26:13,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:13,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-20 12:26:13,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:13,112 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 [2022-11-20 12:26:13,271 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:26:13,271 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 [2022-11-20 12:26:13,566 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 [2022-11-20 12:26:13,640 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:26:13,640 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 [2022-11-20 12:26:13,795 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 [2022-11-20 12:26:13,928 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 [2022-11-20 12:26:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:13,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:26:14,175 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:14,176 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 [2022-11-20 12:26:14,189 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:14,190 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 [2022-11-20 12:26:14,197 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 [2022-11-20 12:26:14,232 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:14,233 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 [2022-11-20 12:26:14,252 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:14,253 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 [2022-11-20 12:26:14,260 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 [2022-11-20 12:26:14,678 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:14,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379248254] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:26:14,678 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:26:14,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 23 [2022-11-20 12:26:14,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380324286] [2022-11-20 12:26:14,679 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:26:14,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:26:14,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:14,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:26:14,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=454, Unknown=6, NotChecked=0, Total=552 [2022-11-20 12:26:14,680 INFO L87 Difference]: Start difference. First operand 293 states and 371 transitions. Second operand has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:15,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:15,971 INFO L93 Difference]: Finished difference Result 390 states and 481 transitions. [2022-11-20 12:26:15,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 12:26:15,972 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 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 49 [2022-11-20 12:26:15,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:15,974 INFO L225 Difference]: With dead ends: 390 [2022-11-20 12:26:15,974 INFO L226 Difference]: Without dead ends: 390 [2022-11-20 12:26:15,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=211, Invalid=839, Unknown=6, NotChecked=0, Total=1056 [2022-11-20 12:26:15,975 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 252 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:15,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [252 Valid, 821 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 798 Invalid, 0 Unknown, 159 Unchecked, 0.9s Time] [2022-11-20 12:26:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-11-20 12:26:15,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 358. [2022-11-20 12:26:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 345 states have (on average 1.327536231884058) internal successors, (458), 357 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:15,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 458 transitions. [2022-11-20 12:26:15,985 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 458 transitions. Word has length 49 [2022-11-20 12:26:15,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:15,986 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 458 transitions. [2022-11-20 12:26:15,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.913043478260869) internal successors, (113), 24 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:15,986 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 458 transitions. [2022-11-20 12:26:15,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-20 12:26:15,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:15,987 INFO L195 NwaCegarLoop]: trace histogram [3, 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, 1, 1] [2022-11-20 12:26:15,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:16,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2022-11-20 12:26:16,195 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:26:16,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:16,195 INFO L85 PathProgramCache]: Analyzing trace with hash 2045271336, now seen corresponding path program 1 times [2022-11-20 12:26:16,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:16,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948182012] [2022-11-20 12:26:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:16,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:17,751 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:17,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:17,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948182012] [2022-11-20 12:26:17,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948182012] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:26:17,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [426453483] [2022-11-20 12:26:17,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:17,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:17,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:17,754 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:26:17,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-20 12:26:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:18,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-20 12:26:18,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:18,066 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 [2022-11-20 12:26:18,218 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 [2022-11-20 12:26:18,241 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:26:18,241 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 [2022-11-20 12:26:18,536 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 [2022-11-20 12:26:18,550 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 [2022-11-20 12:26:18,612 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:26:18,613 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 37 [2022-11-20 12:26:18,621 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 [2022-11-20 12:26:18,743 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 [2022-11-20 12:26:18,748 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 [2022-11-20 12:26:18,800 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:18,800 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:26:19,016 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_~first~0#1.offset| 12))) (and (forall ((v_ArrVal_3604 (Array Int Int))) (<= 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3604) |c_ULTIMATE.start_main_~first~0#1.base|) .cse0) 12))) (forall ((v_ArrVal_3603 (Array Int Int)) (v_ArrVal_3604 (Array Int Int))) (<= (+ 16 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3604) |c_ULTIMATE.start_main_~first~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3603) |c_ULTIMATE.start_main_~first~0#1.base|) .cse0)))))) is different from false [2022-11-20 12:26:19,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:19,031 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 [2022-11-20 12:26:19,042 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:19,042 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 [2022-11-20 12:26:19,048 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 [2022-11-20 12:26:19,071 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:19,072 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 [2022-11-20 12:26:19,082 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:19,082 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 [2022-11-20 12:26:19,086 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:26:19,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:19,090 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 [2022-11-20 12:26:19,093 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:26:19,097 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:26:19,097 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 [2022-11-20 12:26:19,537 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:19,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [426453483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:26:19,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:26:19,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 23 [2022-11-20 12:26:19,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717528839] [2022-11-20 12:26:19,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:26:19,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:26:19,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:19,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:26:19,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=438, Unknown=1, NotChecked=42, Total=552 [2022-11-20 12:26:19,539 INFO L87 Difference]: Start difference. First operand 358 states and 458 transitions. Second operand has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 24 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:21,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:21,211 INFO L93 Difference]: Finished difference Result 420 states and 510 transitions. [2022-11-20 12:26:21,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 12:26:21,211 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 24 states have internal predecessors, (130), 0 states have call successors, (0), 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 49 [2022-11-20 12:26:21,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:21,212 INFO L225 Difference]: With dead ends: 420 [2022-11-20 12:26:21,212 INFO L226 Difference]: Without dead ends: 420 [2022-11-20 12:26:21,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=228, Invalid=896, Unknown=2, NotChecked=64, Total=1190 [2022-11-20 12:26:21,215 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 396 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 193 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:21,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 690 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 503 Invalid, 0 Unknown, 193 Unchecked, 0.7s Time] [2022-11-20 12:26:21,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-11-20 12:26:21,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 372. [2022-11-20 12:26:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 359 states have (on average 1.3342618384401115) internal successors, (479), 371 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 479 transitions. [2022-11-20 12:26:21,226 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 479 transitions. Word has length 49 [2022-11-20 12:26:21,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:21,227 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 479 transitions. [2022-11-20 12:26:21,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 24 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:21,227 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 479 transitions. [2022-11-20 12:26:21,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-20 12:26:21,228 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:21,228 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1] [2022-11-20 12:26:21,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:21,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:21,436 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:26:21,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:21,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1021098355, now seen corresponding path program 1 times [2022-11-20 12:26:21,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:21,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738288821] [2022-11-20 12:26:21,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:21,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:21,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:21,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738288821] [2022-11-20 12:26:21,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738288821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:26:21,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805282936] [2022-11-20 12:26:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:21,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:21,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:21,558 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:26:21,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-20 12:26:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:21,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-20 12:26:21,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:22,009 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:26:22,130 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:22,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805282936] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:26:22,130 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:26:22,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-11-20 12:26:22,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735471538] [2022-11-20 12:26:22,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:26:22,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:26:22,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:22,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:26:22,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:26:22,132 INFO L87 Difference]: Start difference. First operand 372 states and 479 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:22,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:22,199 INFO L93 Difference]: Finished difference Result 382 states and 481 transitions. [2022-11-20 12:26:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:26:22,200 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 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 50 [2022-11-20 12:26:22,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:22,202 INFO L225 Difference]: With dead ends: 382 [2022-11-20 12:26:22,202 INFO L226 Difference]: Without dead ends: 382 [2022-11-20 12:26:22,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 4 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:26:22,203 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 97 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:22,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 298 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:26:22,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-11-20 12:26:22,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 375. [2022-11-20 12:26:22,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 362 states have (on average 1.328729281767956) internal successors, (481), 374 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:22,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 481 transitions. [2022-11-20 12:26:22,211 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 481 transitions. Word has length 50 [2022-11-20 12:26:22,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:22,212 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 481 transitions. [2022-11-20 12:26:22,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:22,212 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 481 transitions. [2022-11-20 12:26:22,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 12:26:22,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:22,213 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 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, 1] [2022-11-20 12:26:22,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:22,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-11-20 12:26:22,420 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:26:22,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:22,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1589265816, now seen corresponding path program 1 times [2022-11-20 12:26:22,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:22,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110146017] [2022-11-20 12:26:22,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:22,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:22,508 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-20 12:26:22,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:22,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110146017] [2022-11-20 12:26:22,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110146017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:26:22,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:26:22,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:26:22,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481635426] [2022-11-20 12:26:22,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:26:22,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:26:22,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:22,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:26:22,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:26:22,512 INFO L87 Difference]: Start difference. First operand 375 states and 481 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 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) [2022-11-20 12:26:22,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:22,652 INFO L93 Difference]: Finished difference Result 393 states and 500 transitions. [2022-11-20 12:26:22,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:26:22,652 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 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 51 [2022-11-20 12:26:22,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:22,654 INFO L225 Difference]: With dead ends: 393 [2022-11-20 12:26:22,654 INFO L226 Difference]: Without dead ends: 393 [2022-11-20 12:26:22,654 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 [2022-11-20 12:26:22,655 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 24 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:22,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 115 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:26:22,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-20 12:26:22,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 374. [2022-11-20 12:26:22,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 362 states have (on average 1.3259668508287292) internal successors, (480), 373 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:22,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 480 transitions. [2022-11-20 12:26:22,665 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 480 transitions. Word has length 51 [2022-11-20 12:26:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:22,667 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 480 transitions. [2022-11-20 12:26:22,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 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) [2022-11-20 12:26:22,667 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 480 transitions. [2022-11-20 12:26:22,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 12:26:22,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:22,668 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 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, 1] [2022-11-20 12:26:22,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-20 12:26:22,669 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:26:22,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:22,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1589265815, now seen corresponding path program 1 times [2022-11-20 12:26:22,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:22,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029377791] [2022-11-20 12:26:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:22,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:22,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:23,570 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:23,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:26:23,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029377791] [2022-11-20 12:26:23,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029377791] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:26:23,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145775062] [2022-11-20 12:26:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:23,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:23,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:23,572 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:26:23,574 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-20 12:26:23,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:23,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-20 12:26:23,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:23,899 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 [2022-11-20 12:26:24,001 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:26:24,002 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 [2022-11-20 12:26:24,243 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 [2022-11-20 12:26:24,289 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 14 treesize of output 16 [2022-11-20 12:26:24,360 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 [2022-11-20 12:26:24,467 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:24,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:26:24,516 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:24,516 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 [2022-11-20 12:26:24,651 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3994 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_~x~0#1.base| v_ArrVal_3994) |c_ULTIMATE.start_main_~first~0#1.base|) (+ |c_ULTIMATE.start_main_~first~0#1.offset| 12)) 1))) is different from false [2022-11-20 12:26:24,661 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:24,661 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 [2022-11-20 12:26:24,673 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:24,674 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 [2022-11-20 12:26:24,677 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 [2022-11-20 12:26:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:25,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145775062] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 12:26:25,057 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 12:26:25,057 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 25 [2022-11-20 12:26:25,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788337327] [2022-11-20 12:26:25,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 12:26:25,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-20 12:26:25,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:26:25,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-20 12:26:25,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=522, Unknown=1, NotChecked=46, Total=650 [2022-11-20 12:26:25,059 INFO L87 Difference]: Start difference. First operand 374 states and 480 transitions. Second operand has 26 states, 25 states have (on average 4.96) internal successors, (124), 26 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) [2022-11-20 12:26:27,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:26:27,500 INFO L93 Difference]: Finished difference Result 491 states and 613 transitions. [2022-11-20 12:26:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:26:27,501 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.96) internal successors, (124), 26 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) Word has length 51 [2022-11-20 12:26:27,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:26:27,502 INFO L225 Difference]: With dead ends: 491 [2022-11-20 12:26:27,503 INFO L226 Difference]: Without dead ends: 491 [2022-11-20 12:26:27,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 94 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 429 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=424, Invalid=1835, Unknown=1, NotChecked=92, Total=2352 [2022-11-20 12:26:27,504 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 686 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:26:27,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 781 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 956 Invalid, 0 Unknown, 176 Unchecked, 1.2s Time] [2022-11-20 12:26:27,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-11-20 12:26:27,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 420. [2022-11-20 12:26:27,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 408 states have (on average 1.338235294117647) internal successors, (546), 419 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:26:27,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 546 transitions. [2022-11-20 12:26:27,515 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 546 transitions. Word has length 51 [2022-11-20 12:26:27,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:26:27,515 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 546 transitions. [2022-11-20 12:26:27,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.96) internal successors, (124), 26 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) [2022-11-20 12:26:27,515 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 546 transitions. [2022-11-20 12:26:27,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-20 12:26:27,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:26:27,516 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:26:27,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-20 12:26:27,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2022-11-20 12:26:27,724 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2022-11-20 12:26:27,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:26:27,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1446176517, now seen corresponding path program 1 times [2022-11-20 12:26:27,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:26:27,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044572906] [2022-11-20 12:26:27,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:27,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:26:27,744 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:26:27,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [17399376] [2022-11-20 12:26:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:26:27,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:26:27,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:26:27,746 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:26:27,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_13d5de33-7031-4899-bff8-c9410e52522a/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-20 12:26:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:26:28,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-20 12:26:28,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:26:28,168 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 [2022-11-20 12:26:28,208 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 [2022-11-20 12:26:28,245 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:26:28,245 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 16 treesize of output 22 [2022-11-20 12:26:28,252 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 [2022-11-20 12:26:28,264 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 [2022-11-20 12:26:29,125 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:29,125 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 15 [2022-11-20 12:26:29,147 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:29,148 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 35 [2022-11-20 12:26:29,870 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:29,871 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 34 treesize of output 32 [2022-11-20 12:26:30,123 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:26:30,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:26:31,543 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 48 treesize of output 44 [2022-11-20 12:26:31,550 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 79 treesize of output 75 [2022-11-20 12:26:31,554 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 85 treesize of output 77 [2022-11-20 12:26:31,560 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 134 treesize of output 126 [2022-11-20 12:26:33,321 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 (= |c_ULTIMATE.start_main_~x~0#1.offset| 0))) (or (not (< |c_ULTIMATE.start_main_~c1~0#1| 5)) (not (< |c_ULTIMATE.start_main_~c2~0#1| 3)) (let ((.cse5 (+ |c_ULTIMATE.start_main_~y~0#1.offset| 8))) (let ((.cse9 (not .cse2)) (.cse30 (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_ArrVal_4129 (Array Int Int))) (or (< (select (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) |c_ULTIMATE.start_main_~y~0#1.base|) .cse5) 16) (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|)))) (.cse23 (= |c_ULTIMATE.start_main_~y~0#1.offset| 0)) (.cse8 (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_ArrVal_4129 (Array Int Int))) (< (select (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) |c_ULTIMATE.start_main_~y~0#1.base|) .cse5) 16)))) (and (or (and (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (let ((.cse0 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129)) (.cse1 (+ v_arrayElimCell_190 8))) (or (< (select (select .cse0 |c_ULTIMATE.start_main_~y~0#1.base|) .cse1) 16) (= v_arrayElimCell_190 0) (< (select (select .cse0 v_arrayElimCell_188) .cse1) 16) (< v_arrayElimCell_190 0)))) .cse2) (forall ((v_arrayElimCell_190 Int)) (or (= v_arrayElimCell_190 0) (< v_arrayElimCell_190 0) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int))) (let ((.cse7 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse3 (select .cse7 |c_ULTIMATE.start_main_~y~0#1.base|)) (.cse6 (select .cse7 v_arrayElimCell_188)) (.cse4 (+ v_arrayElimCell_190 8))) (or (< (select .cse3 .cse4) 16) (< (select .cse3 .cse5) 16) (< (select .cse6 .cse5) 16) (< (select .cse6 .cse4) 16))))))) (or .cse2 (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (or (= v_arrayElimCell_190 0) (< (select (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) v_arrayElimCell_188) (+ v_arrayElimCell_190 8)) 16) (< v_arrayElimCell_190 0)))) (or .cse8 .cse9) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (let ((.cse12 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse10 (select .cse12 |c_ULTIMATE.start_main_~y~0#1.base|)) (.cse11 (+ v_arrayElimCell_190 8))) (or (< (select .cse10 .cse11) 16) (< (select .cse10 .cse5) 16) (= v_arrayElimCell_190 0) (< (select (select .cse12 v_arrayElimCell_188) .cse11) 16) (< v_arrayElimCell_190 0))))) .cse2) (or .cse9 (and .cse8 (forall ((v_arrayElimCell_190 Int)) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_ArrVal_4129 (Array Int Int))) (let ((.cse13 (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse13 (+ v_arrayElimCell_190 8)) 16) (< (select .cse13 .cse5) 16)))) (< v_arrayElimCell_190 0))) (forall ((v_arrayElimCell_190 Int)) (or (< v_arrayElimCell_190 0) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int))) (let ((.cse17 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse14 (select .cse17 |c_ULTIMATE.start_main_~y~0#1.base|)) (.cse16 (select .cse17 v_arrayElimCell_188)) (.cse15 (+ v_arrayElimCell_190 8))) (or (< (select .cse14 .cse15) 16) (< (select .cse14 .cse5) 16) (< (select .cse16 .cse5) 16) (< (select .cse16 .cse15) 16))))))) (forall ((v_arrayElimCell_190 Int)) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int))) (let ((.cse19 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse18 (select .cse19 |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse18 (+ v_arrayElimCell_190 8)) 16) (< (select .cse18 .cse5) 16) (< (select (select .cse19 v_arrayElimCell_188) .cse5) 16))))) (< v_arrayElimCell_190 0))))) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (let ((.cse21 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse20 (select .cse21 |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse20 (+ v_arrayElimCell_190 8)) 16) (< (select .cse20 .cse5) 16) (= v_arrayElimCell_190 0) (< (select (select .cse21 v_arrayElimCell_188) .cse5) 16) (< v_arrayElimCell_190 0))))) .cse9) (or .cse9 (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (let ((.cse22 (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse22 (+ v_arrayElimCell_190 8)) 16) (< (select .cse22 .cse5) 16) (= v_arrayElimCell_190 0) (< v_arrayElimCell_190 0)))))) (and .cse23 .cse2)) (or .cse2 (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (or (= |ULTIMATE.start_main_~x~0#1.base| v_arrayElimCell_188) (< (select (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) v_arrayElimCell_188) (+ v_arrayElimCell_190 8)) 16) (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|) (< v_arrayElimCell_190 0)))) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (let ((.cse25 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse24 (select .cse25 |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse24 (+ v_arrayElimCell_190 8)) 16) (< (select .cse24 .cse5) 16) (= |ULTIMATE.start_main_~x~0#1.base| v_arrayElimCell_188) (< (select (select .cse25 v_arrayElimCell_188) .cse5) 16) (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|) (< v_arrayElimCell_190 0))))) .cse9) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (let ((.cse26 (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse26 (+ v_arrayElimCell_190 8)) 16) (< (select .cse26 .cse5) 16) (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|) (< v_arrayElimCell_190 0)))) .cse9) (or .cse2 (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (let ((.cse29 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse27 (select .cse29 |c_ULTIMATE.start_main_~y~0#1.base|)) (.cse28 (+ v_arrayElimCell_190 8))) (or (< (select .cse27 .cse28) 16) (< (select .cse27 .cse5) 16) (= |ULTIMATE.start_main_~x~0#1.base| v_arrayElimCell_188) (< (select (select .cse29 v_arrayElimCell_188) .cse28) 16) (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|) (< v_arrayElimCell_190 0)))))) (or .cse30 .cse9) (or .cse2 (and (forall ((v_arrayElimCell_190 Int)) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int)) (or (= |ULTIMATE.start_main_~x~0#1.base| v_arrayElimCell_188) (forall ((v_ArrVal_4129 (Array Int Int))) (let ((.cse34 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse31 (select .cse34 |c_ULTIMATE.start_main_~y~0#1.base|)) (.cse33 (select .cse34 v_arrayElimCell_188)) (.cse32 (+ v_arrayElimCell_190 8))) (or (< (select .cse31 .cse32) 16) (< (select .cse31 .cse5) 16) (< (select .cse33 .cse5) 16) (< (select .cse33 .cse32) 16))))))) (< v_arrayElimCell_190 0))) (forall ((v_arrayElimCell_190 Int)) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int))) (let ((.cse35 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129)) (.cse36 (+ v_arrayElimCell_190 8))) (or (< (select (select .cse35 |c_ULTIMATE.start_main_~y~0#1.base|) .cse36) 16) (= |ULTIMATE.start_main_~x~0#1.base| v_arrayElimCell_188) (< (select (select .cse35 v_arrayElimCell_188) .cse36) 16)))) (< v_arrayElimCell_190 0))) (forall ((v_arrayElimCell_190 Int)) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int))) (or (= |ULTIMATE.start_main_~x~0#1.base| v_arrayElimCell_188) (< (select (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) v_arrayElimCell_188) (+ v_arrayElimCell_190 8)) 16))) (< v_arrayElimCell_190 0))) (forall ((v_arrayElimCell_190 Int)) (or (< v_arrayElimCell_190 0) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int))) (let ((.cse39 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse37 (select .cse39 |c_ULTIMATE.start_main_~y~0#1.base|)) (.cse38 (+ v_arrayElimCell_190 8))) (or (< (select .cse37 .cse38) 16) (< (select .cse37 .cse5) 16) (= |ULTIMATE.start_main_~x~0#1.base| v_arrayElimCell_188) (< (select (select .cse39 v_arrayElimCell_188) .cse38) 16))))))))) (forall ((v_arrayElimCell_190 Int)) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int)) (or (forall ((v_arrayElimCell_188 Int)) (or (= |ULTIMATE.start_main_~x~0#1.base| v_arrayElimCell_188) (forall ((v_ArrVal_4129 (Array Int Int))) (let ((.cse43 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse40 (select .cse43 |c_ULTIMATE.start_main_~y~0#1.base|)) (.cse42 (select .cse43 v_arrayElimCell_188)) (.cse41 (+ v_arrayElimCell_190 8))) (or (< (select .cse40 .cse41) 16) (< (select .cse40 .cse5) 16) (< (select .cse42 .cse5) 16) (< (select .cse42 .cse41) 16))))))) (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|))) (< v_arrayElimCell_190 0))) (or (and (forall ((v_arrayElimCell_190 Int)) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int)) (or (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|) (forall ((v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int))) (let ((.cse45 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse44 (select .cse45 |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse44 (+ v_arrayElimCell_190 8)) 16) (< (select .cse44 .cse5) 16) (< (select (select .cse45 v_arrayElimCell_188) .cse5) 16))))))) (< v_arrayElimCell_190 0))) (forall ((v_arrayElimCell_190 Int)) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int)) (or (forall ((v_ArrVal_4129 (Array Int Int))) (let ((.cse46 (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse46 (+ v_arrayElimCell_190 8)) 16) (< (select .cse46 .cse5) 16)))) (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|))) (< v_arrayElimCell_190 0))) .cse30 (forall ((v_arrayElimCell_190 Int)) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int)) (or (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|) (forall ((v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int))) (let ((.cse50 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse47 (select .cse50 |c_ULTIMATE.start_main_~y~0#1.base|)) (.cse49 (select .cse50 v_arrayElimCell_188)) (.cse48 (+ v_arrayElimCell_190 8))) (or (< (select .cse47 .cse48) 16) (< (select .cse47 .cse5) 16) (< (select .cse49 .cse5) 16) (< (select .cse49 .cse48) 16))))))) (< v_arrayElimCell_190 0)))) .cse9) (or (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (let ((.cse51 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129)) (.cse52 (+ v_arrayElimCell_190 8))) (or (< (select (select .cse51 |c_ULTIMATE.start_main_~y~0#1.base|) .cse52) 16) (= |ULTIMATE.start_main_~x~0#1.base| v_arrayElimCell_188) (< (select (select .cse51 v_arrayElimCell_188) .cse52) 16) (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|) (< v_arrayElimCell_190 0)))) .cse2) (or .cse9 (and (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_190 Int)) (or (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|) (forall ((v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int))) (let ((.cse56 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse53 (select .cse56 |c_ULTIMATE.start_main_~y~0#1.base|)) (.cse55 (select .cse56 v_arrayElimCell_188)) (.cse54 (+ v_arrayElimCell_190 8))) (or (< (select .cse53 .cse54) 16) (< (select .cse53 .cse5) 16) (< (select .cse55 .cse5) 16) (< (select .cse55 .cse54) 16))))))) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_190 Int)) (or (forall ((v_ArrVal_4129 (Array Int Int))) (let ((.cse57 (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse57 (+ v_arrayElimCell_190 8)) 16) (< (select .cse57 .cse5) 16)))) (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|))) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (let ((.cse58 (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse58 (+ v_arrayElimCell_190 8)) 16) (< (select .cse58 .cse5) 16) (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|)))) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_190 Int)) (or (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|) (forall ((v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int))) (let ((.cse60 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse59 (select .cse60 |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse59 (+ v_arrayElimCell_190 8)) 16) (< (select .cse59 .cse5) 16) (< (select (select .cse60 v_arrayElimCell_188) .cse5) 16))))))) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_190 Int)) (or (forall ((v_arrayElimCell_188 Int)) (or (= |ULTIMATE.start_main_~x~0#1.base| v_arrayElimCell_188) (forall ((v_ArrVal_4129 (Array Int Int))) (let ((.cse64 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse61 (select .cse64 |c_ULTIMATE.start_main_~y~0#1.base|)) (.cse63 (select .cse64 v_arrayElimCell_188)) (.cse62 (+ v_arrayElimCell_190 8))) (or (< (select .cse61 .cse62) 16) (< (select .cse61 .cse5) 16) (< (select .cse63 .cse5) 16) (< (select .cse63 .cse62) 16))))))) (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|))) .cse30 (or .cse23 (and (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (let ((.cse66 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse65 (select .cse66 |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse65 (+ v_arrayElimCell_190 8)) 16) (< (select .cse65 .cse5) 16) (< (select (select .cse66 v_arrayElimCell_188) .cse5) 16))))) (forall ((v_arrayElimCell_190 Int)) (or (= v_arrayElimCell_190 0) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_ArrVal_4129 (Array Int Int))) (let ((.cse67 (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse67 (+ v_arrayElimCell_190 8)) 16) (< (select .cse67 .cse5) 16)))))) .cse8 (forall ((v_arrayElimCell_190 Int)) (or (= v_arrayElimCell_190 0) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int))) (let ((.cse71 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse68 (select .cse71 |c_ULTIMATE.start_main_~y~0#1.base|)) (.cse70 (select .cse71 v_arrayElimCell_188)) (.cse69 (+ v_arrayElimCell_190 8))) (or (< (select .cse68 .cse69) 16) (< (select .cse68 .cse5) 16) (< (select .cse70 .cse5) 16) (< (select .cse70 .cse69) 16))))))) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (let ((.cse75 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse72 (select .cse75 |c_ULTIMATE.start_main_~y~0#1.base|)) (.cse74 (select .cse75 v_arrayElimCell_188)) (.cse73 (+ v_arrayElimCell_190 8))) (or (< (select .cse72 .cse73) 16) (< (select .cse72 .cse5) 16) (< (select .cse74 .cse5) 16) (< (select .cse74 .cse73) 16))))) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (let ((.cse76 (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse76 (+ v_arrayElimCell_190 8)) 16) (< (select .cse76 .cse5) 16)))) (forall ((v_arrayElimCell_190 Int)) (or (= v_arrayElimCell_190 0) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int))) (let ((.cse78 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse77 (select .cse78 |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse77 (+ v_arrayElimCell_190 8)) 16) (< (select .cse77 .cse5) 16) (< (select (select .cse78 v_arrayElimCell_188) .cse5) 16))))))))) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int)) (or (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|) (forall ((v_ArrVal_4129 (Array Int Int))) (< (select (select (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129) |c_ULTIMATE.start_main_~y~0#1.base|) .cse5) 16)))) (forall ((|ULTIMATE.start_main_~x~0#1.base| Int) (v_arrayElimCell_188 Int) (v_ArrVal_4129 (Array Int Int)) (v_arrayElimCell_190 Int)) (let ((.cse80 (store |c_#memory_int| |ULTIMATE.start_main_~x~0#1.base| v_ArrVal_4129))) (let ((.cse79 (select .cse80 |c_ULTIMATE.start_main_~y~0#1.base|))) (or (< (select .cse79 (+ v_arrayElimCell_190 8)) 16) (< (select .cse79 .cse5) 16) (= |ULTIMATE.start_main_~x~0#1.base| v_arrayElimCell_188) (< (select (select .cse80 v_arrayElimCell_188) .cse5) 16) (= |ULTIMATE.start_main_~x~0#1.base| |c_ULTIMATE.start_main_~y~0#1.base|)))))))))) (and .cse2 (< |c_ULTIMATE.start_main_~y~0#1.offset| 0)) (not (< 0 |c_ULTIMATE.start_main_~c1~0#1|)))) is different from false [2022-11-20 12:26:34,176 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:26:34,177 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 2524 treesize of output 1525