./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/stack_longest-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/stack_longest-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:29:57,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:29:57,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:29:57,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:29:57,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:29:57,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:29:57,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:29:57,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:29:57,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:29:57,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:29:57,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:29:57,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:29:57,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:29:57,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:29:57,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:29:57,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:29:57,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:29:57,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:29:57,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:29:57,582 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:29:57,584 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:29:57,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:29:57,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:29:57,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:29:57,592 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:29:57,592 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:29:57,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:29:57,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:29:57,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:29:57,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:29:57,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:29:57,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:29:57,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:29:57,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:29:57,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:29:57,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:29:57,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:29:57,602 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:29:57,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:29:57,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:29:57,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:29:57,605 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-11-18 20:29:57,628 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:29:57,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:29:57,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:29:57,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:29:57,629 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:29:57,630 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:29:57,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:29:57,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:29:57,631 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:29:57,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:29:57,631 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:29:57,632 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-18 20:29:57,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:29:57,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:29:57,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:29:57,632 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-11-18 20:29:57,633 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-11-18 20:29:57,633 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-11-18 20:29:57,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:29:57,633 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-18 20:29:57,633 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:29:57,634 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:29:57,634 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:29:57,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:29:57,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:29:57,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:29:57,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:29:57,635 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:29:57,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:29:57,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:29:57,636 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_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5773bc320dd9dee5d943610df8c4ec3040864edddf388dd42a51d37167245e47 [2022-11-18 20:29:57,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:29:57,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:29:57,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:29:57,994 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:29:57,995 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:29:57,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/pthread/stack_longest-2.i [2022-11-18 20:29:58,068 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/data/475efb765/979f8d07bc9843609cb019b10d1fcbe7/FLAGf51b2132f [2022-11-18 20:29:58,738 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:29:58,739 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/sv-benchmarks/c/pthread/stack_longest-2.i [2022-11-18 20:29:58,753 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/data/475efb765/979f8d07bc9843609cb019b10d1fcbe7/FLAGf51b2132f [2022-11-18 20:29:58,966 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/data/475efb765/979f8d07bc9843609cb019b10d1fcbe7 [2022-11-18 20:29:58,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:29:58,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:29:58,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:29:58,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:29:58,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:29:58,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:29:58" (1/1) ... [2022-11-18 20:29:58,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36821c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:58, skipping insertion in model container [2022-11-18 20:29:58,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:29:58" (1/1) ... [2022-11-18 20:29:58,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:29:59,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:29:59,747 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2022-11-18 20:29:59,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:29:59,808 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:29:59,872 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/sv-benchmarks/c/pthread/stack_longest-2.i[41530,41543] [2022-11-18 20:29:59,892 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:29:59,980 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:29:59,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:59 WrapperNode [2022-11-18 20:29:59,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:29:59,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:29:59,985 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:29:59,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:29:59,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:59" (1/1) ... [2022-11-18 20:30:00,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:59" (1/1) ... [2022-11-18 20:30:00,087 INFO L138 Inliner]: procedures = 277, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 148 [2022-11-18 20:30:00,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:30:00,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:30:00,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:30:00,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:30:00,100 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:59" (1/1) ... [2022-11-18 20:30:00,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:59" (1/1) ... [2022-11-18 20:30:00,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:59" (1/1) ... [2022-11-18 20:30:00,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:59" (1/1) ... [2022-11-18 20:30:00,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:59" (1/1) ... [2022-11-18 20:30:00,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:59" (1/1) ... [2022-11-18 20:30:00,151 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:59" (1/1) ... [2022-11-18 20:30:00,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:59" (1/1) ... [2022-11-18 20:30:00,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:30:00,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:30:00,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:30:00,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:30:00,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:59" (1/1) ... [2022-11-18 20:30:00,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:30:00,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:00,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:30:00,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:30:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-18 20:30:00,285 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-18 20:30:00,285 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-18 20:30:00,286 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-18 20:30:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:30:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:30:00,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:30:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:30:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-18 20:30:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:30:00,287 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:30:00,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:30:00,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:30:00,290 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 20:30:00,603 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:30:00,606 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:30:01,093 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:30:01,107 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:30:01,108 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:30:01,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:30:01 BoogieIcfgContainer [2022-11-18 20:30:01,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:30:01,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:30:01,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:30:01,134 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:30:01,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:29:58" (1/3) ... [2022-11-18 20:30:01,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6261438f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:30:01, skipping insertion in model container [2022-11-18 20:30:01,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:29:59" (2/3) ... [2022-11-18 20:30:01,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6261438f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:30:01, skipping insertion in model container [2022-11-18 20:30:01,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:30:01" (3/3) ... [2022-11-18 20:30:01,140 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2022-11-18 20:30:01,168 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:30:01,169 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-11-18 20:30:01,169 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:30:01,382 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:30:01,485 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-18 20:30:01,518 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 183 places, 186 transitions, 388 flow [2022-11-18 20:30:01,532 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 183 places, 186 transitions, 388 flow [2022-11-18 20:30:01,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 186 transitions, 388 flow [2022-11-18 20:30:01,676 INFO L130 PetriNetUnfolder]: 10/184 cut-off events. [2022-11-18 20:30:01,676 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:30:01,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 10/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 488 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 134. Up to 3 conditions per place. [2022-11-18 20:30:01,694 INFO L119 LiptonReduction]: Number of co-enabled transitions 9804 [2022-11-18 20:30:09,113 INFO L134 LiptonReduction]: Checked pairs total: 15494 [2022-11-18 20:30:09,113 INFO L136 LiptonReduction]: Total number of compositions: 189 [2022-11-18 20:30:09,124 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 51 places, 49 transitions, 114 flow [2022-11-18 20:30:09,214 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 782 states, 716 states have (on average 3.1089385474860336) internal successors, (2226), 781 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:09,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:30:09,246 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;@3fd0649c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:30:09,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2022-11-18 20:30:09,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 782 states, 716 states have (on average 3.1089385474860336) internal successors, (2226), 781 states have internal predecessors, (2226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:09,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-18 20:30:09,259 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:09,260 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-18 20:30:09,260 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:09,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:09,267 INFO L85 PathProgramCache]: Analyzing trace with hash 763, now seen corresponding path program 1 times [2022-11-18 20:30:09,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:09,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471932738] [2022-11-18 20:30:09,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:09,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:09,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:09,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:09,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471932738] [2022-11-18 20:30:09,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471932738] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:09,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:09,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-18 20:30:09,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713708766] [2022-11-18 20:30:09,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:09,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:30:09,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:09,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:30:09,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:30:09,480 INFO L87 Difference]: Start difference. First operand has 782 states, 716 states have (on average 3.1089385474860336) internal successors, (2226), 781 states have internal predecessors, (2226), 0 states have call successors, (0), 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, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:09,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:09,675 INFO L93 Difference]: Finished difference Result 780 states and 2224 transitions. [2022-11-18 20:30:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:30:09,679 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 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 1 [2022-11-18 20:30:09,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:09,717 INFO L225 Difference]: With dead ends: 780 [2022-11-18 20:30:09,717 INFO L226 Difference]: Without dead ends: 780 [2022-11-18 20:30:09,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:30:09,725 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:09,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:30:09,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-18 20:30:09,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 780. [2022-11-18 20:30:09,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 716 states have (on average 3.106145251396648) internal successors, (2224), 779 states have internal predecessors, (2224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 2224 transitions. [2022-11-18 20:30:09,874 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 2224 transitions. Word has length 1 [2022-11-18 20:30:09,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:09,875 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 2224 transitions. [2022-11-18 20:30:09,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:09,877 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 2224 transitions. [2022-11-18 20:30:09,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:30:09,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:09,879 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:30:09,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:30:09,879 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:09,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:09,881 INFO L85 PathProgramCache]: Analyzing trace with hash 749724, now seen corresponding path program 1 times [2022-11-18 20:30:09,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:09,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873190678] [2022-11-18 20:30:09,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:09,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:09,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:10,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:10,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:10,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873190678] [2022-11-18 20:30:10,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873190678] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:10,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:10,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:30:10,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82038722] [2022-11-18 20:30:10,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:10,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:10,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:10,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:10,182 INFO L87 Difference]: Start difference. First operand 780 states and 2224 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:10,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:10,279 INFO L93 Difference]: Finished difference Result 754 states and 2169 transitions. [2022-11-18 20:30:10,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:10,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-11-18 20:30:10,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:10,288 INFO L225 Difference]: With dead ends: 754 [2022-11-18 20:30:10,289 INFO L226 Difference]: Without dead ends: 754 [2022-11-18 20:30:10,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:10,294 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:10,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:30:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-11-18 20:30:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2022-11-18 20:30:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 698 states have (on average 3.1074498567335245) internal successors, (2169), 753 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:10,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2169 transitions. [2022-11-18 20:30:10,347 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2169 transitions. Word has length 3 [2022-11-18 20:30:10,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:10,347 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 2169 transitions. [2022-11-18 20:30:10,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:10,348 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2169 transitions. [2022-11-18 20:30:10,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-18 20:30:10,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:10,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-18 20:30:10,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:30:10,352 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:10,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:10,355 INFO L85 PathProgramCache]: Analyzing trace with hash 749725, now seen corresponding path program 1 times [2022-11-18 20:30:10,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:10,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045805152] [2022-11-18 20:30:10,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:10,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:10,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:10,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:10,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045805152] [2022-11-18 20:30:10,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045805152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:10,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:10,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:30:10,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823794184] [2022-11-18 20:30:10,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:10,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:10,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:10,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:10,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:10,581 INFO L87 Difference]: Start difference. First operand 754 states and 2169 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:10,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:10,673 INFO L93 Difference]: Finished difference Result 728 states and 2114 transitions. [2022-11-18 20:30:10,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:10,674 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 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 3 [2022-11-18 20:30:10,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:10,680 INFO L225 Difference]: With dead ends: 728 [2022-11-18 20:30:10,681 INFO L226 Difference]: Without dead ends: 728 [2022-11-18 20:30:10,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:10,683 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:10,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:30:10,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-18 20:30:10,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 728. [2022-11-18 20:30:10,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 680 states have (on average 3.1088235294117648) internal successors, (2114), 727 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:10,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 2114 transitions. [2022-11-18 20:30:10,714 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 2114 transitions. Word has length 3 [2022-11-18 20:30:10,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:10,714 INFO L495 AbstractCegarLoop]: Abstraction has 728 states and 2114 transitions. [2022-11-18 20:30:10,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:10,715 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 2114 transitions. [2022-11-18 20:30:10,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:30:10,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:10,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:30:10,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:30:10,716 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:10,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:10,717 INFO L85 PathProgramCache]: Analyzing trace with hash 720504149, now seen corresponding path program 1 times [2022-11-18 20:30:10,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:10,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299121195] [2022-11-18 20:30:10,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:10,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:10,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:10,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:10,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:10,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299121195] [2022-11-18 20:30:10,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299121195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:10,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:10,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:30:10,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159687514] [2022-11-18 20:30:10,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:10,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:30:10,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:10,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:30:10,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:30:10,853 INFO L87 Difference]: Start difference. First operand 728 states and 2114 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:10,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:10,941 INFO L93 Difference]: Finished difference Result 560 states and 1572 transitions. [2022-11-18 20:30:10,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:10,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 20:30:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:10,947 INFO L225 Difference]: With dead ends: 560 [2022-11-18 20:30:10,947 INFO L226 Difference]: Without dead ends: 560 [2022-11-18 20:30:10,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:30:10,949 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:10,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 1 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:30:10,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2022-11-18 20:30:10,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2022-11-18 20:30:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 528 states have (on average 2.977272727272727) internal successors, (1572), 559 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:10,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1572 transitions. [2022-11-18 20:30:10,997 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1572 transitions. Word has length 5 [2022-11-18 20:30:10,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:10,998 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 1572 transitions. [2022-11-18 20:30:10,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:10,998 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1572 transitions. [2022-11-18 20:30:10,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-18 20:30:10,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:10,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-18 20:30:10,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:30:11,000 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:11,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:11,002 INFO L85 PathProgramCache]: Analyzing trace with hash 720504150, now seen corresponding path program 1 times [2022-11-18 20:30:11,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:11,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188279973] [2022-11-18 20:30:11,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:11,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:11,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:11,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:11,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188279973] [2022-11-18 20:30:11,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188279973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:11,066 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:11,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-18 20:30:11,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349191571] [2022-11-18 20:30:11,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:11,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:11,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:11,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:11,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:11,068 INFO L87 Difference]: Start difference. First operand 560 states and 1572 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:11,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:11,161 INFO L93 Difference]: Finished difference Result 392 states and 1030 transitions. [2022-11-18 20:30:11,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:11,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-18 20:30:11,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:11,169 INFO L225 Difference]: With dead ends: 392 [2022-11-18 20:30:11,171 INFO L226 Difference]: Without dead ends: 392 [2022-11-18 20:30:11,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:11,172 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:11,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:30:11,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-11-18 20:30:11,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 392. [2022-11-18 20:30:11,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 376 states have (on average 2.7393617021276597) internal successors, (1030), 391 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:11,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 1030 transitions. [2022-11-18 20:30:11,194 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 1030 transitions. Word has length 5 [2022-11-18 20:30:11,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:11,195 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 1030 transitions. [2022-11-18 20:30:11,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:11,196 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 1030 transitions. [2022-11-18 20:30:11,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:30:11,197 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:11,197 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:30:11,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:30:11,198 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:11,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:11,200 INFO L85 PathProgramCache]: Analyzing trace with hash 859871105, now seen corresponding path program 1 times [2022-11-18 20:30:11,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:11,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518999010] [2022-11-18 20:30:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:11,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:11,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:11,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:11,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518999010] [2022-11-18 20:30:11,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518999010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:11,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:11,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:30:11,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049637185] [2022-11-18 20:30:11,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:11,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:30:11,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:11,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:30:11,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:30:11,556 INFO L87 Difference]: Start difference. First operand 392 states and 1030 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:11,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:11,717 INFO L93 Difference]: Finished difference Result 451 states and 1170 transitions. [2022-11-18 20:30:11,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:30:11,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 20:30:11,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:11,721 INFO L225 Difference]: With dead ends: 451 [2022-11-18 20:30:11,721 INFO L226 Difference]: Without dead ends: 451 [2022-11-18 20:30:11,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:30:11,722 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 64 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:11,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 3 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:30:11,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-18 20:30:11,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 362. [2022-11-18 20:30:11,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 350 states have (on average 2.72) internal successors, (952), 361 states have internal predecessors, (952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:11,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 952 transitions. [2022-11-18 20:30:11,739 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 952 transitions. Word has length 6 [2022-11-18 20:30:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:11,739 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 952 transitions. [2022-11-18 20:30:11,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:11,740 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 952 transitions. [2022-11-18 20:30:11,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-18 20:30:11,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:11,741 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-18 20:30:11,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:30:11,742 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:11,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:11,742 INFO L85 PathProgramCache]: Analyzing trace with hash 859871106, now seen corresponding path program 1 times [2022-11-18 20:30:11,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:11,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734060105] [2022-11-18 20:30:11,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:11,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:12,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:12,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734060105] [2022-11-18 20:30:12,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734060105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:12,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:12,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:30:12,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262323817] [2022-11-18 20:30:12,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:12,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:30:12,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:12,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:30:12,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:30:12,082 INFO L87 Difference]: Start difference. First operand 362 states and 952 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:12,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:12,281 INFO L93 Difference]: Finished difference Result 440 states and 1128 transitions. [2022-11-18 20:30:12,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:30:12,282 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-18 20:30:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:12,285 INFO L225 Difference]: With dead ends: 440 [2022-11-18 20:30:12,285 INFO L226 Difference]: Without dead ends: 440 [2022-11-18 20:30:12,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:30:12,286 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:12,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:30:12,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-11-18 20:30:12,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 428. [2022-11-18 20:30:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 416 states have (on average 2.6778846153846154) internal successors, (1114), 427 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1114 transitions. [2022-11-18 20:30:12,305 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1114 transitions. Word has length 6 [2022-11-18 20:30:12,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:12,305 INFO L495 AbstractCegarLoop]: Abstraction has 428 states and 1114 transitions. [2022-11-18 20:30:12,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:12,306 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1114 transitions. [2022-11-18 20:30:12,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-18 20:30:12,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:12,307 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:12,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:30:12,308 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:12,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:12,309 INFO L85 PathProgramCache]: Analyzing trace with hash -375057378, now seen corresponding path program 1 times [2022-11-18 20:30:12,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:12,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729112214] [2022-11-18 20:30:12,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:12,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:12,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:12,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:12,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729112214] [2022-11-18 20:30:12,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729112214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:12,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:12,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:30:12,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173144196] [2022-11-18 20:30:12,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:12,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:12,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:12,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:12,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:12,373 INFO L87 Difference]: Start difference. First operand 428 states and 1114 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:12,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:12,485 INFO L93 Difference]: Finished difference Result 458 states and 1192 transitions. [2022-11-18 20:30:12,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:12,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 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 10 [2022-11-18 20:30:12,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:12,489 INFO L225 Difference]: With dead ends: 458 [2022-11-18 20:30:12,489 INFO L226 Difference]: Without dead ends: 458 [2022-11-18 20:30:12,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:12,490 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 19 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:12,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 3 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:30:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2022-11-18 20:30:12,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 458. [2022-11-18 20:30:12,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 458 states, 446 states have (on average 2.672645739910314) internal successors, (1192), 457 states have internal predecessors, (1192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:12,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 458 states to 458 states and 1192 transitions. [2022-11-18 20:30:12,510 INFO L78 Accepts]: Start accepts. Automaton has 458 states and 1192 transitions. Word has length 10 [2022-11-18 20:30:12,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:12,510 INFO L495 AbstractCegarLoop]: Abstraction has 458 states and 1192 transitions. [2022-11-18 20:30:12,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:12,511 INFO L276 IsEmpty]: Start isEmpty. Operand 458 states and 1192 transitions. [2022-11-18 20:30:12,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:30:12,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:12,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:12,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:30:12,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:12,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:12,521 INFO L85 PathProgramCache]: Analyzing trace with hash -435815414, now seen corresponding path program 1 times [2022-11-18 20:30:12,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:12,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081245600] [2022-11-18 20:30:12,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:12,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:12,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:12,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081245600] [2022-11-18 20:30:12,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081245600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:12,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:12,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:30:12,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914199776] [2022-11-18 20:30:12,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:12,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:12,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:12,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:12,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:12,594 INFO L87 Difference]: Start difference. First operand 458 states and 1192 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:12,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:12,708 INFO L93 Difference]: Finished difference Result 476 states and 1233 transitions. [2022-11-18 20:30:12,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:12,710 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2022-11-18 20:30:12,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:12,714 INFO L225 Difference]: With dead ends: 476 [2022-11-18 20:30:12,714 INFO L226 Difference]: Without dead ends: 476 [2022-11-18 20:30:12,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:12,716 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:12,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 3 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:30:12,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-11-18 20:30:12,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 440. [2022-11-18 20:30:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 428 states have (on average 2.677570093457944) internal successors, (1146), 439 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:12,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1146 transitions. [2022-11-18 20:30:12,739 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1146 transitions. Word has length 13 [2022-11-18 20:30:12,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:12,740 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 1146 transitions. [2022-11-18 20:30:12,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:12,740 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1146 transitions. [2022-11-18 20:30:12,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-18 20:30:12,743 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:12,743 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:12,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:30:12,743 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:12,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:12,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2122496875, now seen corresponding path program 1 times [2022-11-18 20:30:12,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:12,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503669400] [2022-11-18 20:30:12,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:12,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:12,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:13,292 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:13,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:13,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503669400] [2022-11-18 20:30:13,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503669400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:13,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999499596] [2022-11-18 20:30:13,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:13,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:13,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:13,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:13,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:30:13,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:13,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-18 20:30:13,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:13,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:30:13,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:30:13,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:30:13,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-18 20:30:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:13,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:14,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:14,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999499596] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:14,059 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:14,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 13 [2022-11-18 20:30:14,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524751762] [2022-11-18 20:30:14,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:14,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:30:14,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:14,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:30:14,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:30:14,061 INFO L87 Difference]: Start difference. First operand 440 states and 1146 transitions. Second operand has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:15,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:15,155 INFO L93 Difference]: Finished difference Result 1062 states and 2727 transitions. [2022-11-18 20:30:15,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:30:15,155 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 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 13 [2022-11-18 20:30:15,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:15,163 INFO L225 Difference]: With dead ends: 1062 [2022-11-18 20:30:15,163 INFO L226 Difference]: Without dead ends: 1062 [2022-11-18 20:30:15,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:30:15,165 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 241 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:15,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:30:15,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1062 states. [2022-11-18 20:30:15,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1062 to 764. [2022-11-18 20:30:15,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 752 states have (on average 2.7367021276595747) internal successors, (2058), 763 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:15,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 2058 transitions. [2022-11-18 20:30:15,211 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 2058 transitions. Word has length 13 [2022-11-18 20:30:15,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:15,211 INFO L495 AbstractCegarLoop]: Abstraction has 764 states and 2058 transitions. [2022-11-18 20:30:15,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.7857142857142856) internal successors, (39), 14 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:15,212 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 2058 transitions. [2022-11-18 20:30:15,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-18 20:30:15,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:15,214 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:15,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:15,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:30:15,422 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:15,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:15,423 INFO L85 PathProgramCache]: Analyzing trace with hash -234005461, now seen corresponding path program 1 times [2022-11-18 20:30:15,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:15,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262673913] [2022-11-18 20:30:15,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:15,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:15,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:15,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:15,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262673913] [2022-11-18 20:30:15,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262673913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:15,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:15,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:30:15,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126982644] [2022-11-18 20:30:15,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:15,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:15,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:15,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:15,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:15,614 INFO L87 Difference]: Start difference. First operand 764 states and 2058 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) [2022-11-18 20:30:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:15,717 INFO L93 Difference]: Finished difference Result 364 states and 831 transitions. [2022-11-18 20:30:15,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:15,718 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 [2022-11-18 20:30:15,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:15,721 INFO L225 Difference]: With dead ends: 364 [2022-11-18 20:30:15,721 INFO L226 Difference]: Without dead ends: 364 [2022-11-18 20:30:15,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:15,723 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:15,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:30:15,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-11-18 20:30:15,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 354. [2022-11-18 20:30:15,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 348 states have (on average 2.32183908045977) internal successors, (808), 353 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 808 transitions. [2022-11-18 20:30:15,737 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 808 transitions. Word has length 18 [2022-11-18 20:30:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:15,738 INFO L495 AbstractCegarLoop]: Abstraction has 354 states and 808 transitions. [2022-11-18 20:30:15,738 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) [2022-11-18 20:30:15,738 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 808 transitions. [2022-11-18 20:30:15,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:30:15,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:15,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:15,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:30:15,740 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:15,741 INFO L85 PathProgramCache]: Analyzing trace with hash -332305381, now seen corresponding path program 1 times [2022-11-18 20:30:15,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:15,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848419260] [2022-11-18 20:30:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:15,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:16,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:16,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:16,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848419260] [2022-11-18 20:30:16,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848419260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:16,364 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:16,364 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:30:16,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597170321] [2022-11-18 20:30:16,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:16,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:30:16,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:16,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:30:16,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:30:16,367 INFO L87 Difference]: Start difference. First operand 354 states and 808 transitions. Second operand has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:17,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:17,290 INFO L93 Difference]: Finished difference Result 510 states and 1131 transitions. [2022-11-18 20:30:17,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:30:17,290 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 20:30:17,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:17,293 INFO L225 Difference]: With dead ends: 510 [2022-11-18 20:30:17,293 INFO L226 Difference]: Without dead ends: 510 [2022-11-18 20:30:17,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:30:17,295 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 116 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:17,295 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 0 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:30:17,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2022-11-18 20:30:17,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 424. [2022-11-18 20:30:17,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 418 states have (on average 2.3636363636363638) internal successors, (988), 423 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:17,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 988 transitions. [2022-11-18 20:30:17,321 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 988 transitions. Word has length 19 [2022-11-18 20:30:17,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:17,322 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 988 transitions. [2022-11-18 20:30:17,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:17,323 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 988 transitions. [2022-11-18 20:30:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:30:17,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:17,324 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:17,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:30:17,324 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:17,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:17,325 INFO L85 PathProgramCache]: Analyzing trace with hash -332305380, now seen corresponding path program 1 times [2022-11-18 20:30:17,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:17,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259336486] [2022-11-18 20:30:17,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:17,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:17,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:17,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259336486] [2022-11-18 20:30:17,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259336486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:17,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:17,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:30:17,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580991011] [2022-11-18 20:30:17,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:17,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:30:17,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:17,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:30:17,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:30:17,464 INFO L87 Difference]: Start difference. First operand 424 states and 988 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:17,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:17,675 INFO L93 Difference]: Finished difference Result 507 states and 1189 transitions. [2022-11-18 20:30:17,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:30:17,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 20:30:17,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:17,680 INFO L225 Difference]: With dead ends: 507 [2022-11-18 20:30:17,681 INFO L226 Difference]: Without dead ends: 507 [2022-11-18 20:30:17,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:30:17,682 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 112 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:17,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 8 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:30:17,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-18 20:30:17,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 418. [2022-11-18 20:30:17,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 413 states have (on average 2.348668280871671) internal successors, (970), 417 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:17,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 970 transitions. [2022-11-18 20:30:17,699 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 970 transitions. Word has length 19 [2022-11-18 20:30:17,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:17,700 INFO L495 AbstractCegarLoop]: Abstraction has 418 states and 970 transitions. [2022-11-18 20:30:17,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:17,701 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 970 transitions. [2022-11-18 20:30:17,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:30:17,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:17,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:17,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:30:17,703 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:17,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:17,703 INFO L85 PathProgramCache]: Analyzing trace with hash 2102985957, now seen corresponding path program 1 times [2022-11-18 20:30:17,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:17,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19158647] [2022-11-18 20:30:17,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:17,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:17,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:17,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:17,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19158647] [2022-11-18 20:30:17,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19158647] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:17,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296881241] [2022-11-18 20:30:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:17,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:17,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:17,781 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:17,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:30:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:17,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:30:17,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:17,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:17,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:30:17,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296881241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:17,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:30:17,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-18 20:30:17,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23308832] [2022-11-18 20:30:17,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:17,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:17,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:17,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:17,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:30:17,951 INFO L87 Difference]: Start difference. First operand 418 states and 970 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:18,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:18,080 INFO L93 Difference]: Finished difference Result 602 states and 1357 transitions. [2022-11-18 20:30:18,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:18,081 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 20:30:18,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:18,084 INFO L225 Difference]: With dead ends: 602 [2022-11-18 20:30:18,084 INFO L226 Difference]: Without dead ends: 602 [2022-11-18 20:30:18,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:30:18,086 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 26 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:18,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:30:18,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2022-11-18 20:30:18,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 484. [2022-11-18 20:30:18,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 477 states have (on average 2.291404612159329) internal successors, (1093), 483 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:18,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 1093 transitions. [2022-11-18 20:30:18,105 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 1093 transitions. Word has length 20 [2022-11-18 20:30:18,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:18,106 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 1093 transitions. [2022-11-18 20:30:18,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:18,106 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 1093 transitions. [2022-11-18 20:30:18,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:30:18,108 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:18,108 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-18 20:30:18,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:18,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:30:18,314 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:18,315 INFO L85 PathProgramCache]: Analyzing trace with hash -657829396, now seen corresponding path program 1 times [2022-11-18 20:30:18,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:18,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052478201] [2022-11-18 20:30:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:18,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:18,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:18,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:18,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052478201] [2022-11-18 20:30:18,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052478201] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:18,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704029824] [2022-11-18 20:30:18,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:18,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:18,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:18,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:18,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:30:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:18,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:30:18,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:18,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:18,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:18,819 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:18,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704029824] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:18,820 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:18,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-18 20:30:18,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242338823] [2022-11-18 20:30:18,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:18,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:30:18,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:18,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:30:18,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:30:18,822 INFO L87 Difference]: Start difference. First operand 484 states and 1093 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:19,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:19,395 INFO L93 Difference]: Finished difference Result 1032 states and 2257 transitions. [2022-11-18 20:30:19,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:30:19,395 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 20:30:19,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:19,402 INFO L225 Difference]: With dead ends: 1032 [2022-11-18 20:30:19,402 INFO L226 Difference]: Without dead ends: 1032 [2022-11-18 20:30:19,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:30:19,403 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 214 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:19,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 0 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:30:19,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2022-11-18 20:30:19,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 696. [2022-11-18 20:30:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 689 states have (on average 2.294629898403483) internal successors, (1581), 695 states have internal predecessors, (1581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:19,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 1581 transitions. [2022-11-18 20:30:19,434 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 1581 transitions. Word has length 20 [2022-11-18 20:30:19,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:19,435 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 1581 transitions. [2022-11-18 20:30:19,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 13 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:19,435 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 1581 transitions. [2022-11-18 20:30:19,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:30:19,437 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:19,437 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:19,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:19,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:30:19,644 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:19,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:19,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1518002048, now seen corresponding path program 1 times [2022-11-18 20:30:19,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:19,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966961475] [2022-11-18 20:30:19,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:19,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:20,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:20,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:20,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966961475] [2022-11-18 20:30:20,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966961475] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:20,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:20,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 20:30:20,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402874763] [2022-11-18 20:30:20,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:20,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:30:20,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:20,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:30:20,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:30:20,990 INFO L87 Difference]: Start difference. First operand 696 states and 1581 transitions. Second operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:22,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:22,495 INFO L93 Difference]: Finished difference Result 856 states and 1913 transitions. [2022-11-18 20:30:22,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 20:30:22,496 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:30:22,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:22,501 INFO L225 Difference]: With dead ends: 856 [2022-11-18 20:30:22,501 INFO L226 Difference]: Without dead ends: 856 [2022-11-18 20:30:22,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=160, Invalid=710, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:30:22,503 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 144 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:22,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 0 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:30:22,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-11-18 20:30:22,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 769. [2022-11-18 20:30:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 762 states have (on average 2.2782152230971127) internal successors, (1736), 768 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:22,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1736 transitions. [2022-11-18 20:30:22,533 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1736 transitions. Word has length 21 [2022-11-18 20:30:22,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:22,533 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 1736 transitions. [2022-11-18 20:30:22,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:22,534 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1736 transitions. [2022-11-18 20:30:22,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:30:22,535 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:22,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:22,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:30:22,536 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:22,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:22,537 INFO L85 PathProgramCache]: Analyzing trace with hash 52844052, now seen corresponding path program 2 times [2022-11-18 20:30:22,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:22,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583320593] [2022-11-18 20:30:22,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:22,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:23,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:23,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583320593] [2022-11-18 20:30:23,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583320593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:23,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:23,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 20:30:23,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441420342] [2022-11-18 20:30:23,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:23,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:30:23,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:23,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:30:23,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:30:23,761 INFO L87 Difference]: Start difference. First operand 769 states and 1736 transitions. Second operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:25,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:25,675 INFO L93 Difference]: Finished difference Result 941 states and 2093 transitions. [2022-11-18 20:30:25,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:30:25,676 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:30:25,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:25,681 INFO L225 Difference]: With dead ends: 941 [2022-11-18 20:30:25,681 INFO L226 Difference]: Without dead ends: 941 [2022-11-18 20:30:25,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=132, Invalid=570, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:30:25,682 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:25,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-18 20:30:25,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-11-18 20:30:25,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 759. [2022-11-18 20:30:25,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 752 states have (on average 2.2819148936170213) internal successors, (1716), 758 states have internal predecessors, (1716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:25,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1716 transitions. [2022-11-18 20:30:25,707 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1716 transitions. Word has length 21 [2022-11-18 20:30:25,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:25,707 INFO L495 AbstractCegarLoop]: Abstraction has 759 states and 1716 transitions. [2022-11-18 20:30:25,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:25,708 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1716 transitions. [2022-11-18 20:30:25,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:30:25,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:25,709 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:25,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:30:25,710 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:25,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:25,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1428746976, now seen corresponding path program 3 times [2022-11-18 20:30:25,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:25,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030860299] [2022-11-18 20:30:25,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:25,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:26,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:26,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:26,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030860299] [2022-11-18 20:30:26,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030860299] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:26,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:26,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:30:26,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190974461] [2022-11-18 20:30:26,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:26,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:30:26,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:26,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:30:26,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:30:26,637 INFO L87 Difference]: Start difference. First operand 759 states and 1716 transitions. Second operand has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:27,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:27,624 INFO L93 Difference]: Finished difference Result 901 states and 2019 transitions. [2022-11-18 20:30:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:30:27,624 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:30:27,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:27,630 INFO L225 Difference]: With dead ends: 901 [2022-11-18 20:30:27,630 INFO L226 Difference]: Without dead ends: 901 [2022-11-18 20:30:27,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:30:27,631 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 111 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:27,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 15 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:30:27,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-11-18 20:30:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 811. [2022-11-18 20:30:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 804 states have (on average 2.2960199004975124) internal successors, (1846), 810 states have internal predecessors, (1846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:27,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1846 transitions. [2022-11-18 20:30:27,658 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1846 transitions. Word has length 21 [2022-11-18 20:30:27,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:27,659 INFO L495 AbstractCegarLoop]: Abstraction has 811 states and 1846 transitions. [2022-11-18 20:30:27,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:27,659 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1846 transitions. [2022-11-18 20:30:27,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:30:27,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:27,661 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:27,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:30:27,661 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:27,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:27,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1059712374, now seen corresponding path program 1 times [2022-11-18 20:30:27,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:27,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452311175] [2022-11-18 20:30:27,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:27,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:27,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:27,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:27,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452311175] [2022-11-18 20:30:27,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452311175] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:27,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589384289] [2022-11-18 20:30:27,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:27,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:27,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:27,718 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:27,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:30:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:27,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:30:27,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:27,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:27,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:27,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589384289] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:27,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:27,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-18 20:30:27,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550332975] [2022-11-18 20:30:27,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:27,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:30:27,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:27,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:30:27,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:30:27,899 INFO L87 Difference]: Start difference. First operand 811 states and 1846 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:28,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:28,116 INFO L93 Difference]: Finished difference Result 1699 states and 3691 transitions. [2022-11-18 20:30:28,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:30:28,117 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 20:30:28,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:28,124 INFO L225 Difference]: With dead ends: 1699 [2022-11-18 20:30:28,125 INFO L226 Difference]: Without dead ends: 1699 [2022-11-18 20:30:28,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:30:28,126 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 196 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:28,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 5 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:30:28,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1699 states. [2022-11-18 20:30:28,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1699 to 1651. [2022-11-18 20:30:28,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1651 states, 1644 states have (on average 2.2195863746958637) internal successors, (3649), 1650 states have internal predecessors, (3649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:28,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 3649 transitions. [2022-11-18 20:30:28,173 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 3649 transitions. Word has length 23 [2022-11-18 20:30:28,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:28,175 INFO L495 AbstractCegarLoop]: Abstraction has 1651 states and 3649 transitions. [2022-11-18 20:30:28,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:28,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 3649 transitions. [2022-11-18 20:30:28,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:30:28,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:28,179 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:28,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-18 20:30:28,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:28,385 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:28,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:28,385 INFO L85 PathProgramCache]: Analyzing trace with hash -791407236, now seen corresponding path program 1 times [2022-11-18 20:30:28,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:28,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598819158] [2022-11-18 20:30:28,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:28,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:28,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:30:28,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:28,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598819158] [2022-11-18 20:30:28,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598819158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:28,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:28,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:30:28,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851046697] [2022-11-18 20:30:28,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:28,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:30:28,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:28,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:30:28,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:28,447 INFO L87 Difference]: Start difference. First operand 1651 states and 3649 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:28,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:28,550 INFO L93 Difference]: Finished difference Result 1819 states and 3942 transitions. [2022-11-18 20:30:28,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:30:28,551 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 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 24 [2022-11-18 20:30:28,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:28,560 INFO L225 Difference]: With dead ends: 1819 [2022-11-18 20:30:28,560 INFO L226 Difference]: Without dead ends: 1819 [2022-11-18 20:30:28,561 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:30:28,562 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 21 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:28,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 1 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:30:28,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2022-11-18 20:30:28,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1705. [2022-11-18 20:30:28,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1698 states have (on average 2.180800942285041) internal successors, (3703), 1704 states have internal predecessors, (3703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:28,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 3703 transitions. [2022-11-18 20:30:28,663 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 3703 transitions. Word has length 24 [2022-11-18 20:30:28,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:28,664 INFO L495 AbstractCegarLoop]: Abstraction has 1705 states and 3703 transitions. [2022-11-18 20:30:28,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:28,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 3703 transitions. [2022-11-18 20:30:28,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:30:28,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:28,666 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] [2022-11-18 20:30:28,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:30:28,666 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:28,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:28,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1086825440, now seen corresponding path program 1 times [2022-11-18 20:30:28,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:28,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842134542] [2022-11-18 20:30:28,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:28,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:28,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:29,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:29,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:29,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842134542] [2022-11-18 20:30:29,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842134542] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:29,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320010619] [2022-11-18 20:30:29,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:29,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:29,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:29,026 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:29,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:30:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:29,173 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-18 20:30:29,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:29,570 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:29,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:29,912 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:30:29,912 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 36 treesize of output 40 [2022-11-18 20:30:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:30,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320010619] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:30,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:30,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 28 [2022-11-18 20:30:30,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32688931] [2022-11-18 20:30:30,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:30,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-18 20:30:30,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:30,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-18 20:30:30,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=755, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:30:30,111 INFO L87 Difference]: Start difference. First operand 1705 states and 3703 transitions. Second operand has 30 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:33,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:33,739 INFO L93 Difference]: Finished difference Result 2509 states and 5371 transitions. [2022-11-18 20:30:33,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-18 20:30:33,740 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-11-18 20:30:33,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:33,754 INFO L225 Difference]: With dead ends: 2509 [2022-11-18 20:30:33,754 INFO L226 Difference]: Without dead ends: 2509 [2022-11-18 20:30:33,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 621 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=746, Invalid=2560, Unknown=0, NotChecked=0, Total=3306 [2022-11-18 20:30:33,756 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 390 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2025 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 2025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:33,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 0 Invalid, 2044 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 2025 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 20:30:33,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2509 states. [2022-11-18 20:30:33,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 1759. [2022-11-18 20:30:33,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1759 states, 1753 states have (on average 2.1751283513976043) internal successors, (3813), 1758 states have internal predecessors, (3813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:33,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1759 states to 1759 states and 3813 transitions. [2022-11-18 20:30:33,831 INFO L78 Accepts]: Start accepts. Automaton has 1759 states and 3813 transitions. Word has length 24 [2022-11-18 20:30:33,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:33,832 INFO L495 AbstractCegarLoop]: Abstraction has 1759 states and 3813 transitions. [2022-11-18 20:30:33,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:33,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1759 states and 3813 transitions. [2022-11-18 20:30:33,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-18 20:30:33,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:33,835 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:33,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:34,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:34,048 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:34,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:34,048 INFO L85 PathProgramCache]: Analyzing trace with hash 676787082, now seen corresponding path program 1 times [2022-11-18 20:30:34,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:34,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162020259] [2022-11-18 20:30:34,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:34,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:34,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:34,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162020259] [2022-11-18 20:30:34,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162020259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:34,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420171286] [2022-11-18 20:30:34,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:34,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:34,191 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:34,192 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:34,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:30:34,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:34,383 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:30:34,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:34,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:30:34,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:30:34,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420171286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:34,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:30:34,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2022-11-18 20:30:34,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796718137] [2022-11-18 20:30:34,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:34,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:30:34,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:34,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:30:34,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:30:34,437 INFO L87 Difference]: Start difference. First operand 1759 states and 3813 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:34,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:34,659 INFO L93 Difference]: Finished difference Result 1887 states and 4020 transitions. [2022-11-18 20:30:34,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:30:34,660 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 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 24 [2022-11-18 20:30:34,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:34,680 INFO L225 Difference]: With dead ends: 1887 [2022-11-18 20:30:34,680 INFO L226 Difference]: Without dead ends: 1887 [2022-11-18 20:30:34,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:30:34,681 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:34,682 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 0 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:30:34,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2022-11-18 20:30:34,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1682. [2022-11-18 20:30:34,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1676 states have (on average 2.1694510739856803) internal successors, (3636), 1681 states have internal predecessors, (3636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:34,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 3636 transitions. [2022-11-18 20:30:34,742 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 3636 transitions. Word has length 24 [2022-11-18 20:30:34,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:34,742 INFO L495 AbstractCegarLoop]: Abstraction has 1682 states and 3636 transitions. [2022-11-18 20:30:34,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:34,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 3636 transitions. [2022-11-18 20:30:34,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-18 20:30:34,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:34,746 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1] [2022-11-18 20:30:34,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:34,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:34,953 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:34,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:34,955 INFO L85 PathProgramCache]: Analyzing trace with hash -2145575947, now seen corresponding path program 2 times [2022-11-18 20:30:34,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:34,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751167165] [2022-11-18 20:30:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:34,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:35,962 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:35,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:35,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751167165] [2022-11-18 20:30:35,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751167165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:35,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1666713937] [2022-11-18 20:30:35,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:30:35,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:35,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:35,964 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:35,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:30:36,168 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:30:36,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:36,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-18 20:30:36,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:36,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:30:36,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:30:36,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:30:36,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-18 20:30:36,717 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:36,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:37,170 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:37,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1666713937] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:37,170 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:37,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 29 [2022-11-18 20:30:37,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793107293] [2022-11-18 20:30:37,171 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:37,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:30:37,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:37,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:30:37,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:30:37,172 INFO L87 Difference]: Start difference. First operand 1682 states and 3636 transitions. Second operand has 31 states, 30 states have (on average 2.7) internal successors, (81), 30 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:39,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:39,845 INFO L93 Difference]: Finished difference Result 3816 states and 7987 transitions. [2022-11-18 20:30:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:30:39,845 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.7) internal successors, (81), 30 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-11-18 20:30:39,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:39,858 INFO L225 Difference]: With dead ends: 3816 [2022-11-18 20:30:39,858 INFO L226 Difference]: Without dead ends: 3816 [2022-11-18 20:30:39,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=342, Invalid=1820, Unknown=0, NotChecked=0, Total=2162 [2022-11-18 20:30:39,860 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 538 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:39,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [538 Valid, 0 Invalid, 2269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 20:30:39,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3816 states. [2022-11-18 20:30:39,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3816 to 2390. [2022-11-18 20:30:39,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2390 states, 2384 states have (on average 2.171560402684564) internal successors, (5177), 2389 states have internal predecessors, (5177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:39,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2390 states to 2390 states and 5177 transitions. [2022-11-18 20:30:39,962 INFO L78 Accepts]: Start accepts. Automaton has 2390 states and 5177 transitions. Word has length 27 [2022-11-18 20:30:39,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:39,962 INFO L495 AbstractCegarLoop]: Abstraction has 2390 states and 5177 transitions. [2022-11-18 20:30:39,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.7) internal successors, (81), 30 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:39,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2390 states and 5177 transitions. [2022-11-18 20:30:39,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:30:39,965 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:39,965 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:39,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:30:40,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 20:30:40,175 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:40,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:40,176 INFO L85 PathProgramCache]: Analyzing trace with hash 869998171, now seen corresponding path program 4 times [2022-11-18 20:30:40,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:40,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248260089] [2022-11-18 20:30:40,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:40,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:40,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:41,250 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:41,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:41,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248260089] [2022-11-18 20:30:41,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248260089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:30:41,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:30:41,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:30:41,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036672745] [2022-11-18 20:30:41,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:30:41,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 20:30:41,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:41,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 20:30:41,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:30:41,253 INFO L87 Difference]: Start difference. First operand 2390 states and 5177 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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) [2022-11-18 20:30:42,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:30:42,901 INFO L93 Difference]: Finished difference Result 3725 states and 8036 transitions. [2022-11-18 20:30:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:30:42,901 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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 [2022-11-18 20:30:42,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:30:42,931 INFO L225 Difference]: With dead ends: 3725 [2022-11-18 20:30:42,931 INFO L226 Difference]: Without dead ends: 3725 [2022-11-18 20:30:42,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2022-11-18 20:30:42,933 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 246 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:30:42,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 7 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1257 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-18 20:30:42,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3725 states. [2022-11-18 20:30:43,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3725 to 2727. [2022-11-18 20:30:43,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2727 states, 2721 states have (on average 2.2024990812201395) internal successors, (5993), 2726 states have internal predecessors, (5993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:30:43,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2727 states to 2727 states and 5993 transitions. [2022-11-18 20:30:43,042 INFO L78 Accepts]: Start accepts. Automaton has 2727 states and 5993 transitions. Word has length 28 [2022-11-18 20:30:43,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:30:43,043 INFO L495 AbstractCegarLoop]: Abstraction has 2727 states and 5993 transitions. [2022-11-18 20:30:43,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 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) [2022-11-18 20:30:43,043 INFO L276 IsEmpty]: Start isEmpty. Operand 2727 states and 5993 transitions. [2022-11-18 20:30:43,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:30:43,046 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:30:43,046 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:30:43,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:30:43,046 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:30:43,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:30:43,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1177387169, now seen corresponding path program 5 times [2022-11-18 20:30:43,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:30:43,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797715447] [2022-11-18 20:30:43,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:30:43,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:30:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:30:44,199 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:30:44,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:30:44,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797715447] [2022-11-18 20:30:44,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797715447] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:30:44,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073368887] [2022-11-18 20:30:44,200 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:30:44,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:30:44,200 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:30:44,203 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:30:44,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:30:44,390 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:30:44,390 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:30:44,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 62 conjunts are in the unsatisfiable core [2022-11-18 20:30:44,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:30:44,419 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:30:44,420 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 20:30:44,841 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 22 treesize of output 17 [2022-11-18 20:30:44,944 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 59 treesize of output 54 [2022-11-18 20:30:45,769 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 111 treesize of output 46 [2022-11-18 20:30:47,843 WARN L859 $PredicateComparison]: unable to prove that (exists ((aux_div_v_arrayElimCell_8_57 Int) (aux_mod_v_arrayElimCell_8_57 Int)) (let ((.cse0 (* aux_div_v_arrayElimCell_8_57 4294967296))) (and (= (mod (+ 4294967295 (* 4294967295 aux_mod_v_arrayElimCell_8_57)) 4294967296) |c_t2Thread1of1ForFork1_#t~ret44#1|) (<= 4294966496 aux_mod_v_arrayElimCell_8_57) (<= (+ 4294967297 .cse0 aux_mod_v_arrayElimCell_8_57) 0) (< aux_mod_v_arrayElimCell_8_57 4294967296) (< 0 (+ 8589934593 .cse0 aux_mod_v_arrayElimCell_8_57))))) is different from true [2022-11-18 20:30:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:47,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:30:48,710 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:30:48,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-18 20:30:48,740 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:30:48,740 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 49 treesize of output 52 [2022-11-18 20:30:48,747 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 28 treesize of output 22 [2022-11-18 20:30:49,198 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:30:49,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073368887] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:30:49,199 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:30:49,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 14] total 44 [2022-11-18 20:30:49,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499008328] [2022-11-18 20:30:49,199 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:30:49,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-11-18 20:30:49,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:30:49,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-11-18 20:30:49,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1846, Unknown=5, NotChecked=86, Total=2070 [2022-11-18 20:30:49,202 INFO L87 Difference]: Start difference. First operand 2727 states and 5993 transitions. Second operand has 46 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 45 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:05,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:05,033 INFO L93 Difference]: Finished difference Result 3612 states and 7849 transitions. [2022-11-18 20:31:05,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:31:05,039 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 45 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:31:05,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:05,051 INFO L225 Difference]: With dead ends: 3612 [2022-11-18 20:31:05,051 INFO L226 Difference]: Without dead ends: 3612 [2022-11-18 20:31:05,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=726, Invalid=4384, Unknown=6, NotChecked=140, Total=5256 [2022-11-18 20:31:05,054 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 638 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 2494 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:05,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 2 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2494 Invalid, 0 Unknown, 187 Unchecked, 2.7s Time] [2022-11-18 20:31:05,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3612 states. [2022-11-18 20:31:05,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3612 to 2719. [2022-11-18 20:31:05,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2713 states have (on average 2.2060449686693695) internal successors, (5985), 2718 states have internal predecessors, (5985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:05,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 5985 transitions. [2022-11-18 20:31:05,157 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 5985 transitions. Word has length 28 [2022-11-18 20:31:05,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:05,158 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 5985 transitions. [2022-11-18 20:31:05,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 45 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:05,158 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 5985 transitions. [2022-11-18 20:31:05,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-18 20:31:05,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:05,161 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:05,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:05,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 20:31:05,368 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:31:05,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:05,369 INFO L85 PathProgramCache]: Analyzing trace with hash 2139263885, now seen corresponding path program 1 times [2022-11-18 20:31:05,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:05,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451631987] [2022-11-18 20:31:05,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:05,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:05,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:05,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451631987] [2022-11-18 20:31:05,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451631987] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:05,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815634137] [2022-11-18 20:31:05,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:05,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:05,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:05,492 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:05,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:31:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:05,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:31:05,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:05,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:05,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:05,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815634137] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:05,865 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:05,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-11-18 20:31:05,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183513183] [2022-11-18 20:31:05,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:05,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:31:05,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:05,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:31:05,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:31:05,867 INFO L87 Difference]: Start difference. First operand 2719 states and 5985 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:06,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:06,243 INFO L93 Difference]: Finished difference Result 4757 states and 9649 transitions. [2022-11-18 20:31:06,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:31:06,249 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2022-11-18 20:31:06,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:06,263 INFO L225 Difference]: With dead ends: 4757 [2022-11-18 20:31:06,263 INFO L226 Difference]: Without dead ends: 4757 [2022-11-18 20:31:06,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:31:06,265 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 233 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:06,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 10 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-18 20:31:06,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4757 states. [2022-11-18 20:31:06,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4757 to 4599. [2022-11-18 20:31:06,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4599 states, 4592 states have (on average 2.047473867595819) internal successors, (9402), 4598 states have internal predecessors, (9402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:06,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4599 states to 4599 states and 9402 transitions. [2022-11-18 20:31:06,397 INFO L78 Accepts]: Start accepts. Automaton has 4599 states and 9402 transitions. Word has length 29 [2022-11-18 20:31:06,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:06,397 INFO L495 AbstractCegarLoop]: Abstraction has 4599 states and 9402 transitions. [2022-11-18 20:31:06,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4599 states and 9402 transitions. [2022-11-18 20:31:06,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:31:06,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:06,400 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:06,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:06,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-18 20:31:06,608 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:31:06,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:06,610 INFO L85 PathProgramCache]: Analyzing trace with hash -2010590673, now seen corresponding path program 2 times [2022-11-18 20:31:06,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:06,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454560365] [2022-11-18 20:31:06,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:06,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:31:06,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:06,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454560365] [2022-11-18 20:31:06,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454560365] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:06,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570323480] [2022-11-18 20:31:06,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:31:06,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:06,807 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:06,808 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:06,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:31:07,033 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:31:07,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:07,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-18 20:31:07,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:07,132 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:31:07,132 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:07,348 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:31:07,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570323480] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:07,348 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:07,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 20:31:07,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967597509] [2022-11-18 20:31:07,349 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:07,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-18 20:31:07,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:07,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-18 20:31:07,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:31:07,350 INFO L87 Difference]: Start difference. First operand 4599 states and 9402 transitions. Second operand has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:07,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:07,979 INFO L93 Difference]: Finished difference Result 5641 states and 11321 transitions. [2022-11-18 20:31:07,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:31:07,980 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-18 20:31:07,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:07,996 INFO L225 Difference]: With dead ends: 5641 [2022-11-18 20:31:07,997 INFO L226 Difference]: Without dead ends: 5641 [2022-11-18 20:31:07,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:31:07,998 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 187 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:07,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 0 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 20:31:08,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5641 states. [2022-11-18 20:31:08,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5641 to 4903. [2022-11-18 20:31:08,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4903 states, 4896 states have (on average 2.0320669934640523) internal successors, (9949), 4902 states have internal predecessors, (9949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4903 states to 4903 states and 9949 transitions. [2022-11-18 20:31:08,135 INFO L78 Accepts]: Start accepts. Automaton has 4903 states and 9949 transitions. Word has length 31 [2022-11-18 20:31:08,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:08,136 INFO L495 AbstractCegarLoop]: Abstraction has 4903 states and 9949 transitions. [2022-11-18 20:31:08,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.3125) internal successors, (69), 15 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:08,136 INFO L276 IsEmpty]: Start isEmpty. Operand 4903 states and 9949 transitions. [2022-11-18 20:31:08,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-18 20:31:08,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:08,139 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:08,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:08,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-18 20:31:08,346 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:31:08,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:08,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1694151223, now seen corresponding path program 2 times [2022-11-18 20:31:08,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:08,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252673534] [2022-11-18 20:31:08,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:08,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:09,460 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:09,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:09,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252673534] [2022-11-18 20:31:09,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252673534] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:09,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170866464] [2022-11-18 20:31:09,460 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:31:09,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:09,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:09,462 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:09,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:31:09,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:31:09,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:31:09,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-18 20:31:09,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:09,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:31:09,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:31:09,746 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:31:09,747 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 1 case distinctions, treesize of input 15 treesize of output 23 [2022-11-18 20:31:09,789 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-18 20:31:09,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2022-11-18 20:31:10,393 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:31:10,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:11,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170866464] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:11,110 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:11,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 9] total 29 [2022-11-18 20:31:11,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962386105] [2022-11-18 20:31:11,111 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:11,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-18 20:31:11,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:11,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-18 20:31:11,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=799, Unknown=0, NotChecked=0, Total=930 [2022-11-18 20:31:11,113 INFO L87 Difference]: Start difference. First operand 4903 states and 9949 transitions. Second operand has 31 states, 30 states have (on average 2.8666666666666667) internal successors, (86), 30 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:14,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:31:14,585 INFO L93 Difference]: Finished difference Result 7403 states and 14823 transitions. [2022-11-18 20:31:14,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-18 20:31:14,586 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 2.8666666666666667) internal successors, (86), 30 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-18 20:31:14,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:31:14,604 INFO L225 Difference]: With dead ends: 7403 [2022-11-18 20:31:14,604 INFO L226 Difference]: Without dead ends: 7403 [2022-11-18 20:31:14,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=460, Invalid=2192, Unknown=0, NotChecked=0, Total=2652 [2022-11-18 20:31:14,606 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 463 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2091 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 2091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:31:14,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 0 Invalid, 2116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 2091 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 20:31:14,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7403 states. [2022-11-18 20:31:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7403 to 6371. [2022-11-18 20:31:14,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6371 states, 6364 states have (on average 2.034098051539912) internal successors, (12945), 6370 states have internal predecessors, (12945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:14,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6371 states to 6371 states and 12945 transitions. [2022-11-18 20:31:14,797 INFO L78 Accepts]: Start accepts. Automaton has 6371 states and 12945 transitions. Word has length 31 [2022-11-18 20:31:14,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:31:14,797 INFO L495 AbstractCegarLoop]: Abstraction has 6371 states and 12945 transitions. [2022-11-18 20:31:14,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 2.8666666666666667) internal successors, (86), 30 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:31:14,798 INFO L276 IsEmpty]: Start isEmpty. Operand 6371 states and 12945 transitions. [2022-11-18 20:31:14,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:31:14,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:31:14,801 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:31:14,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:31:15,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-18 20:31:15,020 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:31:15,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:31:15,020 INFO L85 PathProgramCache]: Analyzing trace with hash -305260878, now seen corresponding path program 1 times [2022-11-18 20:31:15,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:31:15,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115592881] [2022-11-18 20:31:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:15,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:31:15,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,067 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:17,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:31:17,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115592881] [2022-11-18 20:31:17,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115592881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:31:17,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298405669] [2022-11-18 20:31:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:31:17,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:31:17,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:31:17,071 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:31:17,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:31:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:31:17,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-18 20:31:17,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:31:17,771 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 22 treesize of output 17 [2022-11-18 20:31:18,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:31:18,435 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 72 treesize of output 43 [2022-11-18 20:31:19,675 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 111 treesize of output 46 [2022-11-18 20:31:21,739 WARN L859 $PredicateComparison]: unable to prove that (exists ((aux_div_v_arrayElimCell_17_58 Int) (aux_mod_v_arrayElimCell_17_58 Int)) (let ((.cse0 (* aux_div_v_arrayElimCell_17_58 4294967296))) (and (<= 4294966496 aux_mod_v_arrayElimCell_17_58) (< aux_mod_v_arrayElimCell_17_58 4294967296) (<= (+ .cse0 aux_mod_v_arrayElimCell_17_58 4294967297) 0) (= |c_t2Thread1of1ForFork1_#t~ret44#1| (mod (+ (* 4294967295 aux_mod_v_arrayElimCell_17_58) 4294967295) 4294967296)) (< 0 (+ .cse0 8589934593 aux_mod_v_arrayElimCell_17_58))))) is different from true [2022-11-18 20:31:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:31:21,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:31:23,591 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 54 treesize of output 46 [2022-11-18 20:31:24,012 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:31:24,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298405669] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:31:24,013 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:31:24,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 18] total 56 [2022-11-18 20:31:24,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366833324] [2022-11-18 20:31:24,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:31:24,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2022-11-18 20:31:24,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:31:24,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2022-11-18 20:31:24,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=2905, Unknown=1, NotChecked=108, Total=3192 [2022-11-18 20:31:24,017 INFO L87 Difference]: Start difference. First operand 6371 states and 12945 transitions. Second operand has 57 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 57 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:17,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:17,025 INFO L93 Difference]: Finished difference Result 15626 states and 31213 transitions. [2022-11-18 20:33:17,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-11-18 20:33:17,026 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 57 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 20:33:17,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:17,057 INFO L225 Difference]: With dead ends: 15626 [2022-11-18 20:33:17,057 INFO L226 Difference]: Without dead ends: 15626 [2022-11-18 20:33:17,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 48 SyntacticMatches, 9 SemanticMatches, 217 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 17684 ImplicationChecksByTransitivity, 108.7s TimeCoverageRelationStatistics Valid=4639, Invalid=42657, Unknown=14, NotChecked=432, Total=47742 [2022-11-18 20:33:17,066 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1676 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6030 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 8269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 6030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2126 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:17,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1676 Valid, 1 Invalid, 8269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [113 Valid, 6030 Invalid, 0 Unknown, 2126 Unchecked, 9.8s Time] [2022-11-18 20:33:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15626 states. [2022-11-18 20:33:17,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15626 to 7948. [2022-11-18 20:33:17,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7948 states, 7941 states have (on average 2.051001133358519) internal successors, (16287), 7947 states have internal predecessors, (16287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:17,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7948 states to 7948 states and 16287 transitions. [2022-11-18 20:33:17,360 INFO L78 Accepts]: Start accepts. Automaton has 7948 states and 16287 transitions. Word has length 36 [2022-11-18 20:33:17,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:17,360 INFO L495 AbstractCegarLoop]: Abstraction has 7948 states and 16287 transitions. [2022-11-18 20:33:17,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 1.9285714285714286) internal successors, (108), 57 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:17,361 INFO L276 IsEmpty]: Start isEmpty. Operand 7948 states and 16287 transitions. [2022-11-18 20:33:17,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:33:17,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:17,365 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:17,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:17,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:17,572 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:33:17,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:17,573 INFO L85 PathProgramCache]: Analyzing trace with hash 357598878, now seen corresponding path program 2 times [2022-11-18 20:33:17,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:17,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900232388] [2022-11-18 20:33:17,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:17,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:19,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:19,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900232388] [2022-11-18 20:33:19,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900232388] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:19,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086073169] [2022-11-18 20:33:19,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:33:19,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:19,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:19,896 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:19,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:33:20,185 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:33:20,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:33:20,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 78 conjunts are in the unsatisfiable core [2022-11-18 20:33:20,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:20,241 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-18 20:33:20,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2022-11-18 20:33:20,861 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 22 treesize of output 17 [2022-11-18 20:33:20,999 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 59 treesize of output 54 [2022-11-18 20:33:21,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:33:21,760 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 52 treesize of output 38 [2022-11-18 20:33:23,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:33:23,221 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 95 treesize of output 46 [2022-11-18 20:33:25,276 WARN L859 $PredicateComparison]: unable to prove that (exists ((aux_mod_v_arrayElimCell_24_58 Int) (aux_div_v_arrayElimCell_24_58 Int)) (let ((.cse0 (* aux_div_v_arrayElimCell_24_58 4294967296))) (and (= |c_t2Thread1of1ForFork1_#t~ret44#1| (mod (+ (* 4294967295 aux_mod_v_arrayElimCell_24_58) 4294967295) 4294967296)) (< 0 (+ .cse0 8589934593 aux_mod_v_arrayElimCell_24_58)) (< aux_mod_v_arrayElimCell_24_58 4294967296) (<= (+ .cse0 aux_mod_v_arrayElimCell_24_58 4294967297) 0) (<= 4294966496 aux_mod_v_arrayElimCell_24_58)))) is different from true [2022-11-18 20:33:25,276 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:33:25,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:33:31,061 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:33:31,062 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-18 20:33:31,084 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:33:31,084 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 49 treesize of output 52 [2022-11-18 20:33:31,095 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 28 treesize of output 22 [2022-11-18 20:33:32,219 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:32,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086073169] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:33:32,220 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:33:32,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 19] total 58 [2022-11-18 20:33:32,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358332344] [2022-11-18 20:33:32,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:33:32,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-11-18 20:33:32,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:33:32,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-11-18 20:33:32,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=274, Invalid=3148, Unknown=4, NotChecked=114, Total=3540 [2022-11-18 20:33:32,225 INFO L87 Difference]: Start difference. First operand 7948 states and 16287 transitions. Second operand has 60 states, 59 states have (on average 1.8305084745762712) internal successors, (108), 59 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:49,265 WARN L233 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:33:52,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:33:52,541 INFO L93 Difference]: Finished difference Result 10357 states and 20950 transitions. [2022-11-18 20:33:52,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-18 20:33:52,542 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 1.8305084745762712) internal successors, (108), 59 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 20:33:52,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:33:52,559 INFO L225 Difference]: With dead ends: 10357 [2022-11-18 20:33:52,559 INFO L226 Difference]: Without dead ends: 10357 [2022-11-18 20:33:52,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1881 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=916, Invalid=8014, Unknown=4, NotChecked=186, Total=9120 [2022-11-18 20:33:52,561 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 486 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3701 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 5957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2239 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:33:52,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 0 Invalid, 5957 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 3701 Invalid, 0 Unknown, 2239 Unchecked, 4.2s Time] [2022-11-18 20:33:52,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10357 states. [2022-11-18 20:33:52,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10357 to 8398. [2022-11-18 20:33:52,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8398 states, 8391 states have (on average 2.0480276486711952) internal successors, (17185), 8397 states have internal predecessors, (17185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8398 states to 8398 states and 17185 transitions. [2022-11-18 20:33:52,782 INFO L78 Accepts]: Start accepts. Automaton has 8398 states and 17185 transitions. Word has length 36 [2022-11-18 20:33:52,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:33:52,782 INFO L495 AbstractCegarLoop]: Abstraction has 8398 states and 17185 transitions. [2022-11-18 20:33:52,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 1.8305084745762712) internal successors, (108), 59 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:33:52,783 INFO L276 IsEmpty]: Start isEmpty. Operand 8398 states and 17185 transitions. [2022-11-18 20:33:52,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:33:52,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:33:52,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:33:52,804 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:33:52,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:52,995 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:33:52,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:33:52,995 INFO L85 PathProgramCache]: Analyzing trace with hash -494978990, now seen corresponding path program 3 times [2022-11-18 20:33:52,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:33:52,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940708827] [2022-11-18 20:33:52,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:33:52,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:33:53,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:33:55,431 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:33:55,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:33:55,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940708827] [2022-11-18 20:33:55,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940708827] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:33:55,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594429615] [2022-11-18 20:33:55,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:33:55,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:33:55,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:33:55,434 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:33:55,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:33:55,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:33:55,653 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:33:55,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-18 20:33:55,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:33:55,692 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-18 20:33:55,692 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2022-11-18 20:33:56,265 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 22 treesize of output 17 [2022-11-18 20:33:56,652 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 43 treesize of output 38 [2022-11-18 20:33:57,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:33:57,090 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 52 treesize of output 38 [2022-11-18 20:33:58,262 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 79 treesize of output 46 [2022-11-18 20:34:00,312 WARN L859 $PredicateComparison]: unable to prove that (exists ((aux_div_v_arrayElimCell_33_58 Int) (aux_mod_v_arrayElimCell_33_58 Int)) (let ((.cse0 (* aux_div_v_arrayElimCell_33_58 4294967296))) (and (< 0 (+ 8589934593 .cse0 aux_mod_v_arrayElimCell_33_58)) (<= 4294966496 aux_mod_v_arrayElimCell_33_58) (= |c_t2Thread1of1ForFork1_#t~ret44#1| (mod (+ 4294967295 (* 4294967295 aux_mod_v_arrayElimCell_33_58)) 4294967296)) (< aux_mod_v_arrayElimCell_33_58 4294967296) (<= (+ .cse0 aux_mod_v_arrayElimCell_33_58 4294967297) 0)))) is different from true [2022-11-18 20:34:00,313 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:34:00,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:02,473 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:02,473 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-18 20:34:02,489 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:02,490 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 49 treesize of output 52 [2022-11-18 20:34:02,496 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 28 treesize of output 22 [2022-11-18 20:34:02,986 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:02,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594429615] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:02,987 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:02,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 59 [2022-11-18 20:34:02,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767664107] [2022-11-18 20:34:02,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:02,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 20:34:02,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:02,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 20:34:02,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=3208, Unknown=12, NotChecked=116, Total=3660 [2022-11-18 20:34:02,990 INFO L87 Difference]: Start difference. First operand 8398 states and 17185 transitions. Second operand has 61 states, 60 states have (on average 1.8) internal successors, (108), 60 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:36,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:34:36,815 INFO L93 Difference]: Finished difference Result 13515 states and 27159 transitions. [2022-11-18 20:34:36,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 103 states. [2022-11-18 20:34:36,816 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.8) internal successors, (108), 60 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 20:34:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:34:36,841 INFO L225 Difference]: With dead ends: 13515 [2022-11-18 20:34:36,841 INFO L226 Difference]: Without dead ends: 13515 [2022-11-18 20:34:36,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 34 SyntacticMatches, 4 SemanticMatches, 151 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 7360 ImplicationChecksByTransitivity, 31.7s TimeCoverageRelationStatistics Valid=2526, Invalid=20413, Unknown=17, NotChecked=300, Total=23256 [2022-11-18 20:34:36,845 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 881 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 6051 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 8205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 6051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2037 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:34:36,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 1 Invalid, 8205 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [117 Valid, 6051 Invalid, 0 Unknown, 2037 Unchecked, 8.3s Time] [2022-11-18 20:34:36,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13515 states. [2022-11-18 20:34:37,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13515 to 9009. [2022-11-18 20:34:37,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9009 states, 9002 states have (on average 2.039324594534548) internal successors, (18358), 9008 states have internal predecessors, (18358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:37,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9009 states to 9009 states and 18358 transitions. [2022-11-18 20:34:37,117 INFO L78 Accepts]: Start accepts. Automaton has 9009 states and 18358 transitions. Word has length 36 [2022-11-18 20:34:37,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:34:37,118 INFO L495 AbstractCegarLoop]: Abstraction has 9009 states and 18358 transitions. [2022-11-18 20:34:37,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.8) internal successors, (108), 60 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:34:37,118 INFO L276 IsEmpty]: Start isEmpty. Operand 9009 states and 18358 transitions. [2022-11-18 20:34:37,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:34:37,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:34:37,122 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:34:37,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-18 20:34:37,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2022-11-18 20:34:37,330 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:34:37,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:34:37,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1216626286, now seen corresponding path program 4 times [2022-11-18 20:34:37,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:34:37,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665399734] [2022-11-18 20:34:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:34:37,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:34:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:34:39,737 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:39,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:34:39,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665399734] [2022-11-18 20:34:39,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665399734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:34:39,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405187539] [2022-11-18 20:34:39,738 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:34:39,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:34:39,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:34:39,741 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:34:39,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-18 20:34:40,079 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:34:40,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:34:40,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 99 conjunts are in the unsatisfiable core [2022-11-18 20:34:40,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:34:40,126 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-18 20:34:40,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2022-11-18 20:34:40,736 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 22 treesize of output 17 [2022-11-18 20:34:41,224 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 61 treesize of output 57 [2022-11-18 20:34:41,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:34:41,869 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 70 treesize of output 45 [2022-11-18 20:34:44,027 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:34:44,028 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 97 treesize of output 49 [2022-11-18 20:34:44,188 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:44,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:34:45,995 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:45,996 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-18 20:34:46,011 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:34:46,012 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 49 treesize of output 52 [2022-11-18 20:34:46,026 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 28 treesize of output 22 [2022-11-18 20:34:46,954 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:34:46,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405187539] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:34:46,954 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:34:46,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 19] total 60 [2022-11-18 20:34:46,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563627112] [2022-11-18 20:34:46,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:34:46,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-18 20:34:46,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:34:46,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-18 20:34:46,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=333, Invalid=3446, Unknown=3, NotChecked=0, Total=3782 [2022-11-18 20:34:46,957 INFO L87 Difference]: Start difference. First operand 9009 states and 18358 transitions. Second operand has 62 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 61 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:01,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:01,291 INFO L93 Difference]: Finished difference Result 14163 states and 28379 transitions. [2022-11-18 20:35:01,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-11-18 20:35:01,292 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 61 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 20:35:01,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:01,319 INFO L225 Difference]: With dead ends: 14163 [2022-11-18 20:35:01,319 INFO L226 Difference]: Without dead ends: 14163 [2022-11-18 20:35:01,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3470 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=1381, Invalid=10826, Unknown=3, NotChecked=0, Total=12210 [2022-11-18 20:35:01,321 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 527 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 3297 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 9557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6231 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:01,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [527 Valid, 1 Invalid, 9557 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 3297 Invalid, 0 Unknown, 6231 Unchecked, 4.5s Time] [2022-11-18 20:35:01,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14163 states. [2022-11-18 20:35:01,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14163 to 9239. [2022-11-18 20:35:01,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9239 states, 9232 states have (on average 2.038994800693241) internal successors, (18824), 9238 states have internal predecessors, (18824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:01,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9239 states to 9239 states and 18824 transitions. [2022-11-18 20:35:01,600 INFO L78 Accepts]: Start accepts. Automaton has 9239 states and 18824 transitions. Word has length 36 [2022-11-18 20:35:01,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:01,601 INFO L495 AbstractCegarLoop]: Abstraction has 9239 states and 18824 transitions. [2022-11-18 20:35:01,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 61 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:01,602 INFO L276 IsEmpty]: Start isEmpty. Operand 9239 states and 18824 transitions. [2022-11-18 20:35:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:35:01,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:01,606 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:01,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:01,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:01,814 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:35:01,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:01,814 INFO L85 PathProgramCache]: Analyzing trace with hash 215388730, now seen corresponding path program 5 times [2022-11-18 20:35:01,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:01,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234345297] [2022-11-18 20:35:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:01,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:03,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:03,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234345297] [2022-11-18 20:35:03,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234345297] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:03,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [973135109] [2022-11-18 20:35:03,877 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:35:03,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:03,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:03,883 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:03,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-18 20:35:04,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:35:04,299 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:04,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 85 conjunts are in the unsatisfiable core [2022-11-18 20:35:04,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:04,325 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:35:04,325 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 20:35:04,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2022-11-18 20:35:05,286 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 38 [2022-11-18 20:35:05,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:35:05,755 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 52 treesize of output 38 [2022-11-18 20:35:07,274 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 79 treesize of output 46 [2022-11-18 20:35:09,321 WARN L859 $PredicateComparison]: unable to prove that (exists ((aux_mod_v_arrayElimCell_50_58 Int) (aux_div_v_arrayElimCell_50_58 Int)) (let ((.cse0 (* aux_div_v_arrayElimCell_50_58 4294967296))) (and (< aux_mod_v_arrayElimCell_50_58 4294967296) (< 0 (+ .cse0 8589934593 aux_mod_v_arrayElimCell_50_58)) (<= (+ .cse0 aux_mod_v_arrayElimCell_50_58 4294967297) 0) (<= 4294966496 aux_mod_v_arrayElimCell_50_58) (= (mod (+ (* 4294967295 aux_mod_v_arrayElimCell_50_58) 4294967295) 4294967296) |c_t2Thread1of1ForFork1_#t~ret44#1|)))) is different from true [2022-11-18 20:35:09,322 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:35:09,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:10,886 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1256 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1256) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (- 4) (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2022-11-18 20:35:11,085 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1256 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1256) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2022-11-18 20:35:11,095 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:35:11,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-18 20:35:11,109 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:35:11,109 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 49 treesize of output 52 [2022-11-18 20:35:11,119 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 28 treesize of output 22 [2022-11-18 20:35:11,616 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-18 20:35:11,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [973135109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:11,617 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:11,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 19] total 60 [2022-11-18 20:35:11,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552166636] [2022-11-18 20:35:11,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:11,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-18 20:35:11,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:11,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-18 20:35:11,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=3218, Unknown=12, NotChecked=348, Total=3782 [2022-11-18 20:35:11,620 INFO L87 Difference]: Start difference. First operand 9239 states and 18824 transitions. Second operand has 62 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 61 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:42,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:42,585 INFO L93 Difference]: Finished difference Result 16247 states and 32197 transitions. [2022-11-18 20:35:42,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-11-18 20:35:42,586 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 61 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 20:35:42,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:42,617 INFO L225 Difference]: With dead ends: 16247 [2022-11-18 20:35:42,617 INFO L226 Difference]: Without dead ends: 16247 [2022-11-18 20:35:42,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 49 SyntacticMatches, 7 SemanticMatches, 165 ConstructedPredicates, 3 IntricatePredicates, 1 DeprecatedPredicates, 8508 ImplicationChecksByTransitivity, 28.7s TimeCoverageRelationStatistics Valid=1669, Invalid=25049, Unknown=26, NotChecked=978, Total=27722 [2022-11-18 20:35:42,619 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 828 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6845 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 9388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 6845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2492 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:42,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [828 Valid, 0 Invalid, 9388 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [51 Valid, 6845 Invalid, 0 Unknown, 2492 Unchecked, 8.5s Time] [2022-11-18 20:35:42,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16247 states. [2022-11-18 20:35:42,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16247 to 9739. [2022-11-18 20:35:42,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9739 states, 9732 states have (on average 2.0412042745581584) internal successors, (19865), 9738 states have internal predecessors, (19865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:42,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9739 states to 9739 states and 19865 transitions. [2022-11-18 20:35:42,944 INFO L78 Accepts]: Start accepts. Automaton has 9739 states and 19865 transitions. Word has length 36 [2022-11-18 20:35:42,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:42,945 INFO L495 AbstractCegarLoop]: Abstraction has 9739 states and 19865 transitions. [2022-11-18 20:35:42,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 61 states have (on average 1.7704918032786885) internal successors, (108), 61 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:42,945 INFO L276 IsEmpty]: Start isEmpty. Operand 9739 states and 19865 transitions. [2022-11-18 20:35:42,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:35:42,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:42,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:42,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:43,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-18 20:35:43,157 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:35:43,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:43,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1811358936, now seen corresponding path program 6 times [2022-11-18 20:35:43,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:43,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919765125] [2022-11-18 20:35:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:43,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:45,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:45,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919765125] [2022-11-18 20:35:45,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919765125] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:45,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584604665] [2022-11-18 20:35:45,731 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:35:45,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:45,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:45,736 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:45,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-18 20:35:46,077 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-18 20:35:46,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:46,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 76 conjunts are in the unsatisfiable core [2022-11-18 20:35:46,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:46,097 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:35:46,097 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-11-18 20:35:46,649 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 22 treesize of output 17 [2022-11-18 20:35:47,293 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 61 treesize of output 57 [2022-11-18 20:35:47,963 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:35:47,964 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 70 treesize of output 45 [2022-11-18 20:35:50,100 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:35:50,101 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 113 treesize of output 49 [2022-11-18 20:35:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:50,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:51,943 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1326 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1326) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (- 4) (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2022-11-18 20:35:51,956 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1326 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1326) |c_~#arr~0.base|) (+ (* 4 |c_t1Thread1of1ForFork0_inc_top_#t~post31#1|) |c_~#arr~0.offset|)) 4294967296) 4294967294))) is different from false [2022-11-18 20:35:51,966 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1326 (Array Int Int))) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1326) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296)))) is different from false [2022-11-18 20:35:51,980 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:35:51,980 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2022-11-18 20:35:51,996 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:35:51,996 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 49 treesize of output 52 [2022-11-18 20:35:52,003 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 28 treesize of output 22 [2022-11-18 20:35:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2022-11-18 20:35:52,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584604665] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:52,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:52,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 59 [2022-11-18 20:35:52,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358522342] [2022-11-18 20:35:52,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:52,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 20:35:52,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:52,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 20:35:52,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=3124, Unknown=3, NotChecked=342, Total=3660 [2022-11-18 20:35:52,810 INFO L87 Difference]: Start difference. First operand 9739 states and 19865 transitions. Second operand has 61 states, 60 states have (on average 1.8) internal successors, (108), 60 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:58,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:35:58,781 INFO L93 Difference]: Finished difference Result 12567 states and 24978 transitions. [2022-11-18 20:35:58,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 20:35:58,782 INFO L78 Accepts]: Start accepts. Automaton has has 61 states, 60 states have (on average 1.8) internal successors, (108), 60 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 20:35:58,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:35:58,803 INFO L225 Difference]: With dead ends: 12567 [2022-11-18 20:35:58,803 INFO L226 Difference]: Without dead ends: 12567 [2022-11-18 20:35:58,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 87 ConstructedPredicates, 3 IntricatePredicates, 2 DeprecatedPredicates, 1758 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=485, Invalid=6834, Unknown=3, NotChecked=510, Total=7832 [2022-11-18 20:35:58,804 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 203 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 1977 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 4401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2417 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:35:58,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 16 Invalid, 4401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1977 Invalid, 0 Unknown, 2417 Unchecked, 2.0s Time] [2022-11-18 20:35:58,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12567 states. [2022-11-18 20:35:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12567 to 10206. [2022-11-18 20:35:59,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10206 states, 10199 states have (on average 2.038140994215119) internal successors, (20787), 10205 states have internal predecessors, (20787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:59,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10206 states to 10206 states and 20787 transitions. [2022-11-18 20:35:59,035 INFO L78 Accepts]: Start accepts. Automaton has 10206 states and 20787 transitions. Word has length 36 [2022-11-18 20:35:59,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:35:59,035 INFO L495 AbstractCegarLoop]: Abstraction has 10206 states and 20787 transitions. [2022-11-18 20:35:59,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 61 states, 60 states have (on average 1.8) internal successors, (108), 60 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:59,035 INFO L276 IsEmpty]: Start isEmpty. Operand 10206 states and 20787 transitions. [2022-11-18 20:35:59,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:35:59,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:35:59,040 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:59,051 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:59,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-11-18 20:35:59,248 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:35:59,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:59,248 INFO L85 PathProgramCache]: Analyzing trace with hash -831532076, now seen corresponding path program 7 times [2022-11-18 20:35:59,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:59,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189611853] [2022-11-18 20:35:59,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:59,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:01,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:01,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189611853] [2022-11-18 20:36:01,111 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189611853] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:36:01,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001754730] [2022-11-18 20:36:01,111 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:36:01,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:36:01,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:01,113 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:36:01,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-18 20:36:01,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:01,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-18 20:36:01,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:01,338 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-18 20:36:01,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2022-11-18 20:36:01,878 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 22 treesize of output 17 [2022-11-18 20:36:02,393 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 43 treesize of output 38 [2022-11-18 20:36:02,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:36:02,690 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 52 treesize of output 38 [2022-11-18 20:36:04,157 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 79 treesize of output 46 [2022-11-18 20:36:06,198 WARN L859 $PredicateComparison]: unable to prove that (exists ((aux_mod_v_arrayElimCell_67_58 Int) (aux_div_v_arrayElimCell_67_58 Int)) (let ((.cse0 (* aux_div_v_arrayElimCell_67_58 4294967296))) (and (< 0 (+ 8589934593 aux_mod_v_arrayElimCell_67_58 .cse0)) (<= (+ aux_mod_v_arrayElimCell_67_58 4294967297 .cse0) 0) (<= 4294966496 aux_mod_v_arrayElimCell_67_58) (= |c_t2Thread1of1ForFork1_#t~ret44#1| (mod (+ 4294967295 (* 4294967295 aux_mod_v_arrayElimCell_67_58)) 4294967296)) (< aux_mod_v_arrayElimCell_67_58 4294967296)))) is different from true [2022-11-18 20:36:06,199 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:36:06,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:08,218 WARN L837 $PredicateComparison]: unable to prove that (or (= c_~top~0 0) (forall ((|v_t1Thread1of1ForFork0_push_#t~ret34#1_185| Int) (|v_t1Thread1of1ForFork0_push_~stack#1.offset_103| Int) (v_ArrVal_1397 Int) (v_ArrVal_1396 (Array Int Int))) (or (< |v_t1Thread1of1ForFork0_push_~stack#1.offset_103| |c_~#arr~0.offset|) (< |v_t1Thread1of1ForFork0_push_#t~ret34#1_185| c_~top~0) (not (= (mod (select (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1396) |c_~#arr~0.base|) (+ (* |v_t1Thread1of1ForFork0_push_#t~ret34#1_185| 4) |v_t1Thread1of1ForFork0_push_~stack#1.offset_103|) v_ArrVal_1397) (+ |c_~#arr~0.offset| (- 4) (* c_~top~0 4))) 4294967296) 4294967294))))) is different from false [2022-11-18 20:36:08,798 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:36:08,799 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 36 treesize of output 37 [2022-11-18 20:36:08,817 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:36:08,817 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 63 treesize of output 67 [2022-11-18 20:36:08,823 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:36:08,828 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 41 treesize of output 35 [2022-11-18 20:36:08,849 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 4 [2022-11-18 20:36:08,859 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:36:08,872 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:36:08,872 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 43 treesize of output 47 [2022-11-18 20:36:11,531 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-11-18 20:36:11,532 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001754730] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:11,532 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:11,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 21, 20] total 61 [2022-11-18 20:36:11,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403677827] [2022-11-18 20:36:11,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:11,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-18 20:36:11,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:11,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-18 20:36:11,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=3360, Unknown=20, NotChecked=238, Total=3906 [2022-11-18 20:36:11,535 INFO L87 Difference]: Start difference. First operand 10206 states and 20787 transitions. Second operand has 63 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:37:18,680 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 63 DAG size of output: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:37:32,507 WARN L233 SmtUtils]: Spent 8.51s on a formula simplification. DAG size of input: 89 DAG size of output: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:37:44,807 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:37:52,383 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 82 DAG size of output: 64 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:37:59,405 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 88 DAG size of output: 68 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:38:13,649 WARN L233 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 56 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:39:17,038 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 70 DAG size of output: 37 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:39:32,098 WARN L233 SmtUtils]: Spent 8.25s on a formula simplification. DAG size of input: 93 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:39:41,052 WARN L233 SmtUtils]: Spent 6.17s on a formula simplification. DAG size of input: 74 DAG size of output: 41 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:40:30,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:30,543 INFO L93 Difference]: Finished difference Result 29168 states and 55030 transitions. [2022-11-18 20:40:30,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 316 states. [2022-11-18 20:40:30,544 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 20:40:30,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:30,601 INFO L225 Difference]: With dead ends: 29168 [2022-11-18 20:40:30,601 INFO L226 Difference]: Without dead ends: 29168 [2022-11-18 20:40:30,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 52 SyntacticMatches, 53 SemanticMatches, 359 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 61328 ImplicationChecksByTransitivity, 247.5s TimeCoverageRelationStatistics Valid=9503, Invalid=118872, Unknown=155, NotChecked=1430, Total=129960 [2022-11-18 20:40:30,607 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1242 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12333 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 18329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 12333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5859 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:30,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 0 Invalid, 18329 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [137 Valid, 12333 Invalid, 0 Unknown, 5859 Unchecked, 18.9s Time] [2022-11-18 20:40:30,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29168 states. [2022-11-18 20:40:31,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29168 to 14040. [2022-11-18 20:40:31,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14040 states, 14033 states have (on average 2.058006128411601) internal successors, (28880), 14039 states have internal predecessors, (28880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:31,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14040 states to 14040 states and 28880 transitions. [2022-11-18 20:40:31,059 INFO L78 Accepts]: Start accepts. Automaton has 14040 states and 28880 transitions. Word has length 36 [2022-11-18 20:40:31,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:31,059 INFO L495 AbstractCegarLoop]: Abstraction has 14040 states and 28880 transitions. [2022-11-18 20:40:31,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 62 states have (on average 1.7419354838709677) internal successors, (108), 62 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:31,060 INFO L276 IsEmpty]: Start isEmpty. Operand 14040 states and 28880 transitions. [2022-11-18 20:40:31,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:40:31,070 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:31,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:31,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-18 20:40:31,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:31,278 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:40:31,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:31,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1081374694, now seen corresponding path program 8 times [2022-11-18 20:40:31,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:31,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147811984] [2022-11-18 20:40:31,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:31,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:31,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:34,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:34,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147811984] [2022-11-18 20:40:34,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147811984] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:40:34,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566439214] [2022-11-18 20:40:34,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:40:34,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:40:34,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:40:34,524 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:40:34,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-18 20:40:34,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:40:34,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:40:34,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 88 conjunts are in the unsatisfiable core [2022-11-18 20:40:34,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:40:35,027 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:40:35,027 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 1 case distinctions, treesize of input 9 treesize of output 15 [2022-11-18 20:40:35,601 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2022-11-18 20:40:36,263 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-18 20:40:36,265 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 43 treesize of output 42 [2022-11-18 20:40:36,290 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 28 treesize of output 20 [2022-11-18 20:40:36,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:40:36,752 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 64 treesize of output 50 [2022-11-18 20:40:36,768 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-18 20:40:36,768 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 58 treesize of output 56 [2022-11-18 20:40:38,683 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:40:38,685 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 87 treesize of output 46 [2022-11-18 20:40:40,737 WARN L859 $PredicateComparison]: unable to prove that (exists ((aux_mod_v_arrayElimCell_79_58 Int) (aux_div_v_arrayElimCell_79_58 Int)) (let ((.cse0 (* aux_div_v_arrayElimCell_79_58 4294967296))) (and (= (mod (+ (* 4294967295 aux_mod_v_arrayElimCell_79_58) 4294967295) 4294967296) |c_t2Thread1of1ForFork1_#t~ret44#1|) (< aux_mod_v_arrayElimCell_79_58 4294967296) (<= (+ aux_mod_v_arrayElimCell_79_58 4294967297 .cse0) 0) (< 0 (+ 8589934593 aux_mod_v_arrayElimCell_79_58 .cse0)) (<= 4294966496 aux_mod_v_arrayElimCell_79_58)))) is different from true [2022-11-18 20:40:40,738 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:40:40,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:40:43,451 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:40:43,451 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 38 treesize of output 39 [2022-11-18 20:40:43,468 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:40:43,468 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 67 treesize of output 71 [2022-11-18 20:40:43,474 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:40:43,477 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 44 treesize of output 37 [2022-11-18 20:40:43,501 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 4 [2022-11-18 20:40:43,505 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:40:43,518 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:40:43,519 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 44 treesize of output 48 [2022-11-18 20:40:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:40:44,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566439214] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:40:44,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:40:44,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22, 21] total 68 [2022-11-18 20:40:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895088634] [2022-11-18 20:40:44,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:40:44,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 70 states [2022-11-18 20:40:44,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:44,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2022-11-18 20:40:44,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=4271, Unknown=2, NotChecked=134, Total=4830 [2022-11-18 20:40:44,689 INFO L87 Difference]: Start difference. First operand 14040 states and 28880 transitions. Second operand has 70 states, 69 states have (on average 1.565217391304348) internal successors, (108), 69 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:59,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:59,650 INFO L93 Difference]: Finished difference Result 14885 states and 30455 transitions. [2022-11-18 20:40:59,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-18 20:40:59,655 INFO L78 Accepts]: Start accepts. Automaton has has 70 states, 69 states have (on average 1.565217391304348) internal successors, (108), 69 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 20:40:59,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:59,680 INFO L225 Difference]: With dead ends: 14885 [2022-11-18 20:40:59,681 INFO L226 Difference]: Without dead ends: 14885 [2022-11-18 20:40:59,682 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 118 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4324 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=1320, Invalid=12724, Unknown=2, NotChecked=234, Total=14280 [2022-11-18 20:40:59,683 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 210 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 1722 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 3041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1290 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:59,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 10 Invalid, 3041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1722 Invalid, 0 Unknown, 1290 Unchecked, 2.7s Time] [2022-11-18 20:40:59,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14885 states. [2022-11-18 20:40:59,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14885 to 14096. [2022-11-18 20:40:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14096 states, 14089 states have (on average 2.058911207324863) internal successors, (29008), 14095 states have internal predecessors, (29008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:59,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14096 states to 14096 states and 29008 transitions. [2022-11-18 20:40:59,931 INFO L78 Accepts]: Start accepts. Automaton has 14096 states and 29008 transitions. Word has length 36 [2022-11-18 20:40:59,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:59,931 INFO L495 AbstractCegarLoop]: Abstraction has 14096 states and 29008 transitions. [2022-11-18 20:40:59,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 70 states, 69 states have (on average 1.565217391304348) internal successors, (108), 69 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:40:59,931 INFO L276 IsEmpty]: Start isEmpty. Operand 14096 states and 29008 transitions. [2022-11-18 20:40:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-18 20:40:59,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:59,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:40:59,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-18 20:41:00,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-11-18 20:41:00,137 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:41:00,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:00,138 INFO L85 PathProgramCache]: Analyzing trace with hash -999734998, now seen corresponding path program 9 times [2022-11-18 20:41:00,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:00,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733781234] [2022-11-18 20:41:00,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:00,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:00,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:41:02,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:02,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733781234] [2022-11-18 20:41:02,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733781234] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:41:02,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96744643] [2022-11-18 20:41:02,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:41:02,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:41:02,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:41:02,583 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:41:02,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-18 20:41:02,875 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-18 20:41:02,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:41:02,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 82 conjunts are in the unsatisfiable core [2022-11-18 20:41:02,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:41:02,910 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-18 20:41:02,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2022-11-18 20:41:03,344 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 22 treesize of output 17 [2022-11-18 20:41:04,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:41:04,036 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 72 treesize of output 43 [2022-11-18 20:41:04,195 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 63 treesize of output 58 [2022-11-18 20:41:05,613 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 111 treesize of output 46 [2022-11-18 20:41:07,676 WARN L859 $PredicateComparison]: unable to prove that (exists ((aux_div_v_arrayElimCell_91_58 Int) (aux_mod_v_arrayElimCell_91_58 Int)) (let ((.cse0 (* aux_div_v_arrayElimCell_91_58 4294967296))) (and (< 0 (+ .cse0 8589934593 aux_mod_v_arrayElimCell_91_58)) (<= (+ .cse0 aux_mod_v_arrayElimCell_91_58 4294967297) 0) (= (mod (+ 4294967295 (* 4294967295 aux_mod_v_arrayElimCell_91_58)) 4294967296) |c_t2Thread1of1ForFork1_#t~ret44#1|) (< aux_mod_v_arrayElimCell_91_58 4294967296) (<= 4294966496 aux_mod_v_arrayElimCell_91_58)))) is different from true [2022-11-18 20:41:07,677 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:41:07,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:41:08,854 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1539 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1539) |c_~#arr~0.base|) (+ (* 4 |c_t1Thread1of1ForFork0_inc_top_#t~post31#1|) |c_~#arr~0.offset| (- 4))) 4294967296) 4294967294))) is different from false [2022-11-18 20:41:08,863 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1539 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_1539) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (- 4) (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2022-11-18 20:41:10,986 INFO L321 Elim1Store]: treesize reduction 27, result has 61.4 percent of original size [2022-11-18 20:41:10,987 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 53 treesize of output 60 [2022-11-18 20:41:11,005 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:41:11,006 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 67 treesize of output 70 [2022-11-18 20:41:11,025 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 28 treesize of output 22 [2022-11-18 20:41:15,660 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:41:15,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96744643] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:41:15,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:41:15,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 21, 21] total 67 [2022-11-18 20:41:15,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854558038] [2022-11-18 20:41:15,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:41:15,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2022-11-18 20:41:15,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:15,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2022-11-18 20:41:15,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=3987, Unknown=34, NotChecked=390, Total=4692 [2022-11-18 20:41:15,663 INFO L87 Difference]: Start difference. First operand 14096 states and 29008 transitions. Second operand has 69 states, 68 states have (on average 1.588235294117647) internal successors, (108), 68 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:42,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:42:42,896 INFO L93 Difference]: Finished difference Result 20835 states and 42385 transitions. [2022-11-18 20:42:42,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2022-11-18 20:42:42,897 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 68 states have (on average 1.588235294117647) internal successors, (108), 68 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-11-18 20:42:42,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:42:42,934 INFO L225 Difference]: With dead ends: 20835 [2022-11-18 20:42:42,934 INFO L226 Difference]: Without dead ends: 20835 [2022-11-18 20:42:42,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 55 SyntacticMatches, 8 SemanticMatches, 173 ConstructedPredicates, 3 IntricatePredicates, 3 DeprecatedPredicates, 8917 ImplicationChecksByTransitivity, 91.0s TimeCoverageRelationStatistics Valid=3419, Invalid=25954, Unknown=51, NotChecked=1026, Total=30450 [2022-11-18 20:42:42,937 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1571 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4464 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 6410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 4464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1809 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:42:42,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 0 Invalid, 6410 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [137 Valid, 4464 Invalid, 0 Unknown, 1809 Unchecked, 8.2s Time] [2022-11-18 20:42:42,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20835 states. [2022-11-18 20:42:43,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20835 to 14434. [2022-11-18 20:42:43,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14434 states, 14427 states have (on average 2.0716018576280586) internal successors, (29887), 14433 states have internal predecessors, (29887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:43,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14434 states to 14434 states and 29887 transitions. [2022-11-18 20:42:43,247 INFO L78 Accepts]: Start accepts. Automaton has 14434 states and 29887 transitions. Word has length 36 [2022-11-18 20:42:43,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:42:43,247 INFO L495 AbstractCegarLoop]: Abstraction has 14434 states and 29887 transitions. [2022-11-18 20:42:43,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 68 states have (on average 1.588235294117647) internal successors, (108), 68 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:42:43,248 INFO L276 IsEmpty]: Start isEmpty. Operand 14434 states and 29887 transitions. [2022-11-18 20:42:43,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 20:42:43,253 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:42:43,254 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:42:43,263 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-11-18 20:42:43,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:42:43,461 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:42:43,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:43,462 INFO L85 PathProgramCache]: Analyzing trace with hash -323581204, now seen corresponding path program 1 times [2022-11-18 20:42:43,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:42:43,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57271598] [2022-11-18 20:42:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:43,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:42:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:45,663 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:45,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:45,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57271598] [2022-11-18 20:42:45,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57271598] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:42:45,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775088950] [2022-11-18 20:42:45,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:45,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:42:45,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:42:45,666 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:42:45,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-18 20:42:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:45,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 84 conjunts are in the unsatisfiable core [2022-11-18 20:42:45,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:42:46,427 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 22 treesize of output 17 [2022-11-18 20:42:47,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:42:47,165 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 52 treesize of output 38 [2022-11-18 20:42:48,892 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-18 20:42:48,893 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 87 treesize of output 46 [2022-11-18 20:42:50,936 WARN L859 $PredicateComparison]: unable to prove that (exists ((aux_mod_v_arrayElimCell_96_58 Int) (aux_div_v_arrayElimCell_96_58 Int)) (let ((.cse0 (* aux_div_v_arrayElimCell_96_58 4294967296))) (and (= (mod (+ 4294967295 (* 4294967295 aux_mod_v_arrayElimCell_96_58)) 4294967296) |c_t2Thread1of1ForFork1_#t~ret44#1|) (<= (+ aux_mod_v_arrayElimCell_96_58 4294967297 .cse0) 0) (<= 4294966496 aux_mod_v_arrayElimCell_96_58) (< aux_mod_v_arrayElimCell_96_58 4294967296) (< 0 (+ 8589934593 aux_mod_v_arrayElimCell_96_58 .cse0))))) is different from true [2022-11-18 20:42:50,961 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:42:50,961 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:42:55,115 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 57 treesize of output 48 [2022-11-18 20:42:55,850 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:55,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775088950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:42:55,851 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:42:55,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 19] total 62 [2022-11-18 20:42:55,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465444022] [2022-11-18 20:42:55,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:42:55,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-18 20:42:55,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:42:55,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-18 20:42:55,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=389, Invalid=3520, Unknown=1, NotChecked=122, Total=4032 [2022-11-18 20:42:55,853 INFO L87 Difference]: Start difference. First operand 14434 states and 29887 transitions. Second operand has 64 states, 63 states have (on average 1.7619047619047619) internal successors, (111), 63 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:05,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:05,075 INFO L93 Difference]: Finished difference Result 15234 states and 31289 transitions. [2022-11-18 20:43:05,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-18 20:43:05,076 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 1.7619047619047619) internal successors, (111), 63 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-11-18 20:43:05,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:05,103 INFO L225 Difference]: With dead ends: 15234 [2022-11-18 20:43:05,103 INFO L226 Difference]: Without dead ends: 15234 [2022-11-18 20:43:05,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 91 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2571 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=961, Invalid=7414, Unknown=1, NotChecked=180, Total=8556 [2022-11-18 20:43:05,104 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 206 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 1961 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1961 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 755 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:05,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 12 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1961 Invalid, 0 Unknown, 755 Unchecked, 2.9s Time] [2022-11-18 20:43:05,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15234 states. [2022-11-18 20:43:05,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15234 to 14453. [2022-11-18 20:43:05,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14453 states, 14446 states have (on average 2.0719230236743735) internal successors, (29931), 14452 states have internal predecessors, (29931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:05,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14453 states to 14453 states and 29931 transitions. [2022-11-18 20:43:05,347 INFO L78 Accepts]: Start accepts. Automaton has 14453 states and 29931 transitions. Word has length 37 [2022-11-18 20:43:05,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:05,347 INFO L495 AbstractCegarLoop]: Abstraction has 14453 states and 29931 transitions. [2022-11-18 20:43:05,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 1.7619047619047619) internal successors, (111), 63 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:43:05,347 INFO L276 IsEmpty]: Start isEmpty. Operand 14453 states and 29931 transitions. [2022-11-18 20:43:05,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-11-18 20:43:05,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:05,353 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:05,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-18 20:43:05,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2022-11-18 20:43:05,571 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 20 more)] === [2022-11-18 20:43:05,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:05,572 INFO L85 PathProgramCache]: Analyzing trace with hash 253737328, now seen corresponding path program 2 times [2022-11-18 20:43:05,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:05,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948415210] [2022-11-18 20:43:05,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:05,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:07,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:07,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948415210] [2022-11-18 20:43:07,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948415210] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:43:07,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310648160] [2022-11-18 20:43:07,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:43:07,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:43:07,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:43:07,894 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:43:07,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a46673e8-43f7-4371-b628-d1bd330c2dcb/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-18 20:43:08,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:43:08,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:43:08,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-18 20:43:08,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:43:08,188 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2022-11-18 20:43:08,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2022-11-18 20:43:08,690 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 22 treesize of output 17 [2022-11-18 20:43:08,934 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 43 treesize of output 38 [2022-11-18 20:43:09,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-18 20:43:09,619 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 38 [2022-11-18 20:43:10,908 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 79 treesize of output 46 [2022-11-18 20:43:12,950 WARN L859 $PredicateComparison]: unable to prove that (exists ((aux_div_v_arrayElimCell_103_59 Int) (aux_mod_v_arrayElimCell_103_59 Int)) (let ((.cse0 (* aux_div_v_arrayElimCell_103_59 4294967296))) (and (< aux_mod_v_arrayElimCell_103_59 4294967296) (<= (+ .cse0 4294967297 aux_mod_v_arrayElimCell_103_59) 0) (= |c_t2Thread1of1ForFork1_#t~ret44#1| (mod (+ 4294967295 (* 4294967295 aux_mod_v_arrayElimCell_103_59)) 4294967296)) (< 0 (+ .cse0 8589934593 aux_mod_v_arrayElimCell_103_59)) (<= 4294966496 aux_mod_v_arrayElimCell_103_59)))) is different from true [2022-11-18 20:43:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2022-11-18 20:43:12,977 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:43:15,072 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:43:15,072 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 29 treesize of output 30 [2022-11-18 20:43:15,088 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-18 20:43:15,089 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 49 treesize of output 52 [2022-11-18 20:43:15,095 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 28 treesize of output 22 [2022-11-18 20:43:15,653 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:43:15,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310648160] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:43:15,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:43:15,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 19, 19] total 59 [2022-11-18 20:43:15,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693049260] [2022-11-18 20:43:15,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:43:15,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2022-11-18 20:43:15,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:15,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2022-11-18 20:43:15,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=310, Invalid=3229, Unknown=5, NotChecked=116, Total=3660 [2022-11-18 20:43:15,656 INFO L87 Difference]: Start difference. First operand 14453 states and 29931 transitions. Second operand has 61 states, 60 states have (on average 1.85) internal successors, (111), 60 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)