./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg --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 48b194ce99c1fa112b5c4d4ed6cc0216b9fbb33f6f6efd57d62e9c27b1f7eb5c ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 09:58:00,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 09:58:00,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 09:58:00,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 09:58:00,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 09:58:00,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 09:58:00,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 09:58:00,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 09:58:00,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 09:58:00,652 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 09:58:00,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 09:58:00,656 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 09:58:00,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 09:58:00,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 09:58:00,660 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 09:58:00,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 09:58:00,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 09:58:00,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 09:58:00,669 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 09:58:00,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 09:58:00,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 09:58:00,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 09:58:00,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 09:58:00,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 09:58:00,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 09:58:00,686 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 09:58:00,687 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 09:58:00,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 09:58:00,689 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 09:58:00,691 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 09:58:00,692 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 09:58:00,693 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 09:58:00,695 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 09:58:00,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 09:58:00,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 09:58:00,699 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 09:58:00,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 09:58:00,701 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 09:58:00,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 09:58:00,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 09:58:00,704 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 09:58:00,709 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-10-28 09:58:00,741 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 09:58:00,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 09:58:00,742 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 09:58:00,742 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 09:58:00,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 09:58:00,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 09:58:00,745 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 09:58:00,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 09:58:00,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 09:58:00,746 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-28 09:58:00,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 09:58:00,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 09:58:00,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 09:58:00,747 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-28 09:58:00,747 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-28 09:58:00,748 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-28 09:58:00,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 09:58:00,748 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-28 09:58:00,749 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 09:58:00,749 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 09:58:00,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 09:58:00,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 09:58:00,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 09:58:00,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:58:00,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 09:58:00,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 09:58:00,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 09:58:00,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 09:58:00,752 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 09:58:00,752 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_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 48b194ce99c1fa112b5c4d4ed6cc0216b9fbb33f6f6efd57d62e9c27b1f7eb5c [2021-10-28 09:58:01,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 09:58:01,085 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 09:58:01,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 09:58:01,090 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 09:58:01,091 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 09:58:01,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c [2021-10-28 09:58:01,166 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/data/751652b06/dae60c4713134f2f8fff38298a649b15/FLAG89e00c0aa [2021-10-28 09:58:01,835 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 09:58:01,836 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c [2021-10-28 09:58:01,852 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/data/751652b06/dae60c4713134f2f8fff38298a649b15/FLAG89e00c0aa [2021-10-28 09:58:02,065 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/data/751652b06/dae60c4713134f2f8fff38298a649b15 [2021-10-28 09:58:02,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 09:58:02,070 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-28 09:58:02,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 09:58:02,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 09:58:02,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 09:58:02,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:58:02" (1/1) ... [2021-10-28 09:58:02,079 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@772c7a3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:02, skipping insertion in model container [2021-10-28 09:58:02,079 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:58:02" (1/1) ... [2021-10-28 09:58:02,088 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 09:58:02,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 09:58:02,392 WARN L228 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_be2d4b23-dc59-412d-8b1f-871f573e37b8/sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c[2072,2085] [2021-10-28 09:58:02,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:58:02,589 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 09:58:02,620 WARN L228 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_be2d4b23-dc59-412d-8b1f-871f573e37b8/sv-benchmarks/c/ntdrivers-simplified/diskperf_simpl1.cil.c[2072,2085] [2021-10-28 09:58:02,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 09:58:02,769 INFO L208 MainTranslator]: Completed translation [2021-10-28 09:58:02,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:02 WrapperNode [2021-10-28 09:58:02,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 09:58:02,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 09:58:02,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 09:58:02,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 09:58:02,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:02" (1/1) ... [2021-10-28 09:58:02,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:02" (1/1) ... [2021-10-28 09:58:02,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:02" (1/1) ... [2021-10-28 09:58:02,814 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:02" (1/1) ... [2021-10-28 09:58:02,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:02" (1/1) ... [2021-10-28 09:58:02,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:02" (1/1) ... [2021-10-28 09:58:02,873 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:02" (1/1) ... [2021-10-28 09:58:02,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 09:58:02,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 09:58:02,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 09:58:02,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 09:58:02,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:02" (1/1) ... [2021-10-28 09:58:02,904 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 09:58:02,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:58:02,966 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 09:58:02,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 09:58:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-10-28 09:58:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 09:58:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-10-28 09:58:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-10-28 09:58:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure _BLAST_init [2021-10-28 09:58:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSyncFilterWithTarget [2021-10-28 09:58:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPnp [2021-10-28 09:58:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIrpCompletion [2021-10-28 09:58:03,047 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfStartDevice [2021-10-28 09:58:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRemoveDevice [2021-10-28 09:58:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfSendToNextDriver [2021-10-28 09:58:03,048 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDispatchPower [2021-10-28 09:58:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfForwardIrpSynchronous [2021-10-28 09:58:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfCreate [2021-10-28 09:58:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfIoCompletion [2021-10-28 09:58:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfDeviceControl [2021-10-28 09:58:03,049 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfShutdownFlush [2021-10-28 09:58:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfUnload [2021-10-28 09:58:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure DiskPerfRegisterDevice [2021-10-28 09:58:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure stub_driver_init [2021-10-28 09:58:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-10-28 09:58:03,050 INFO L138 BoogieDeclarations]: Found implementation of procedure IoBuildDeviceIoControlRequest [2021-10-28 09:58:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2021-10-28 09:58:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-10-28 09:58:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-10-28 09:58:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSetEvent [2021-10-28 09:58:03,051 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-10-28 09:58:03,052 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2021-10-28 09:58:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-10-28 09:58:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-10-28 09:58:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-10-28 09:58:03,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 09:58:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-10-28 09:58:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-10-28 09:58:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2021-10-28 09:58:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPnp [2021-10-28 09:58:03,053 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIrpCompletion [2021-10-28 09:58:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfStartDevice [2021-10-28 09:58:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRemoveDevice [2021-10-28 09:58:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSendToNextDriver [2021-10-28 09:58:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDispatchPower [2021-10-28 09:58:03,054 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfForwardIrpSynchronous [2021-10-28 09:58:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfCreate [2021-10-28 09:58:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfIoCompletion [2021-10-28 09:58:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfDeviceControl [2021-10-28 09:58:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfShutdownFlush [2021-10-28 09:58:03,055 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfRegisterDevice [2021-10-28 09:58:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure IoBuildDeviceIoControlRequest [2021-10-28 09:58:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-10-28 09:58:03,056 INFO L130 BoogieDeclarations]: Found specification of procedure KeSetEvent [2021-10-28 09:58:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-10-28 09:58:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2021-10-28 09:58:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-10-28 09:58:03,057 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-10-28 09:58:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure _BLAST_init [2021-10-28 09:58:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfSyncFilterWithTarget [2021-10-28 09:58:03,058 INFO L130 BoogieDeclarations]: Found specification of procedure DiskPerfUnload [2021-10-28 09:58:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure stub_driver_init [2021-10-28 09:58:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-10-28 09:58:03,059 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2021-10-28 09:58:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-10-28 09:58:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 09:58:03,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 09:58:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 09:58:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 09:58:03,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 09:58:03,389 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:58:03,626 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2021-10-28 09:58:03,626 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2021-10-28 09:58:03,638 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:58:03,713 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2021-10-28 09:58:03,729 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2021-10-28 09:58:03,755 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:58:03,776 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-10-28 09:58:03,776 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-10-28 09:58:03,783 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:58:03,796 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-10-28 09:58:03,796 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-10-28 09:58:04,082 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:58:04,139 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-10-28 09:58:04,140 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-10-28 09:58:04,190 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 09:58:04,203 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2021-10-28 09:58:04,204 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2021-10-28 09:58:04,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 09:58:04,261 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-10-28 09:58:04,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:04 BoogieIcfgContainer [2021-10-28 09:58:04,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 09:58:04,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 09:58:04,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 09:58:04,273 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 09:58:04,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:58:02" (1/3) ... [2021-10-28 09:58:04,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f9d4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:58:04, skipping insertion in model container [2021-10-28 09:58:04,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:58:02" (2/3) ... [2021-10-28 09:58:04,275 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39f9d4aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:58:04, skipping insertion in model container [2021-10-28 09:58:04,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:04" (3/3) ... [2021-10-28 09:58:04,277 INFO L111 eAbstractionObserver]: Analyzing ICFG diskperf_simpl1.cil.c [2021-10-28 09:58:04,285 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 09:58:04,285 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-28 09:58:04,345 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 09:58:04,353 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 09:58:04,353 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-28 09:58:04,385 INFO L276 IsEmpty]: Start isEmpty. Operand has 296 states, 206 states have (on average 1.4320388349514563) internal successors, (295), 225 states have internal predecessors, (295), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) [2021-10-28 09:58:04,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-28 09:58:04,396 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:04,397 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:04,398 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:04,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:04,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1560408711, now seen corresponding path program 1 times [2021-10-28 09:58:04,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:04,418 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251853820] [2021-10-28 09:58:04,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:04,420 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:04,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:04,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:05,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:05,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:05,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251853820] [2021-10-28 09:58:05,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251853820] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:05,034 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:05,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 09:58:05,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303854452] [2021-10-28 09:58:05,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 09:58:05,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:05,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 09:58:05,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:58:05,067 INFO L87 Difference]: Start difference. First operand has 296 states, 206 states have (on average 1.4320388349514563) internal successors, (295), 225 states have internal predecessors, (295), 61 states have call successors, (61), 26 states have call predecessors, (61), 26 states have return successors, (61), 57 states have call predecessors, (61), 61 states have call successors, (61) Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:58:06,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:06,129 INFO L93 Difference]: Finished difference Result 332 states and 459 transitions. [2021-10-28 09:58:06,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 09:58:06,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-10-28 09:58:06,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:06,164 INFO L225 Difference]: With dead ends: 332 [2021-10-28 09:58:06,164 INFO L226 Difference]: Without dead ends: 326 [2021-10-28 09:58:06,167 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 09:58:06,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-28 09:58:06,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2021-10-28 09:58:06,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 201 states have (on average 1.3781094527363185) internal successors, (277), 217 states have internal predecessors, (277), 61 states have call successors, (61), 26 states have call predecessors, (61), 24 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-10-28 09:58:06,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 384 transitions. [2021-10-28 09:58:06,254 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 384 transitions. Word has length 15 [2021-10-28 09:58:06,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:06,255 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 384 transitions. [2021-10-28 09:58:06,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:58:06,256 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 384 transitions. [2021-10-28 09:58:06,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-28 09:58:06,262 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:06,262 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:06,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 09:58:06,263 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:06,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:06,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1302515818, now seen corresponding path program 1 times [2021-10-28 09:58:06,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:06,265 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993010205] [2021-10-28 09:58:06,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:06,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:06,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:06,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:06,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:06,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:06,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:06,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:06,638 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993010205] [2021-10-28 09:58:06,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993010205] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:06,639 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:06,639 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 09:58:06,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548935918] [2021-10-28 09:58:06,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 09:58:06,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:06,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 09:58:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-28 09:58:06,643 INFO L87 Difference]: Start difference. First operand 287 states and 384 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:58:07,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:07,878 INFO L93 Difference]: Finished difference Result 331 states and 451 transitions. [2021-10-28 09:58:07,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:58:07,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-10-28 09:58:07,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:07,889 INFO L225 Difference]: With dead ends: 331 [2021-10-28 09:58:07,889 INFO L226 Difference]: Without dead ends: 326 [2021-10-28 09:58:07,890 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:58:07,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-10-28 09:58:07,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 287. [2021-10-28 09:58:07,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 201 states have (on average 1.373134328358209) internal successors, (276), 217 states have internal predecessors, (276), 61 states have call successors, (61), 26 states have call predecessors, (61), 24 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-10-28 09:58:07,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 383 transitions. [2021-10-28 09:58:07,948 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 383 transitions. Word has length 20 [2021-10-28 09:58:07,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:07,948 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 383 transitions. [2021-10-28 09:58:07,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-10-28 09:58:07,949 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 383 transitions. [2021-10-28 09:58:07,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-28 09:58:07,950 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:07,951 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:07,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 09:58:07,951 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:07,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:07,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1551281276, now seen corresponding path program 1 times [2021-10-28 09:58:07,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:07,953 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870933011] [2021-10-28 09:58:07,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:07,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:08,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:08,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:08,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:08,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:08,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:08,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:08,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870933011] [2021-10-28 09:58:08,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870933011] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:08,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:08,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:58:08,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288583877] [2021-10-28 09:58:08,224 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:58:08,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:08,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:58:08,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:58:08,226 INFO L87 Difference]: Start difference. First operand 287 states and 383 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:58:10,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:10,321 INFO L93 Difference]: Finished difference Result 508 states and 702 transitions. [2021-10-28 09:58:10,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:58:10,322 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2021-10-28 09:58:10,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:10,333 INFO L225 Difference]: With dead ends: 508 [2021-10-28 09:58:10,334 INFO L226 Difference]: Without dead ends: 507 [2021-10-28 09:58:10,334 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:10,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-10-28 09:58:10,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 440. [2021-10-28 09:58:10,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 318 states have (on average 1.3459119496855345) internal successors, (428), 329 states have internal predecessors, (428), 80 states have call successors, (80), 37 states have call predecessors, (80), 41 states have return successors, (100), 77 states have call predecessors, (100), 68 states have call successors, (100) [2021-10-28 09:58:10,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 608 transitions. [2021-10-28 09:58:10,397 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 608 transitions. Word has length 25 [2021-10-28 09:58:10,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:10,398 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 608 transitions. [2021-10-28 09:58:10,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 3 states have internal predecessors, (15), 3 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:58:10,399 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 608 transitions. [2021-10-28 09:58:10,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-10-28 09:58:10,404 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:10,404 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:10,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 09:58:10,405 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:10,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:10,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1085614475, now seen corresponding path program 1 times [2021-10-28 09:58:10,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:10,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262903821] [2021-10-28 09:58:10,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:10,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:10,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:10,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:10,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:10,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:10,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:10,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:10,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262903821] [2021-10-28 09:58:10,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262903821] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:10,738 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:10,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:58:10,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413109675] [2021-10-28 09:58:10,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:58:10,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:10,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:58:10,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:58:10,748 INFO L87 Difference]: Start difference. First operand 440 states and 608 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:58:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:12,690 INFO L93 Difference]: Finished difference Result 690 states and 979 transitions. [2021-10-28 09:58:12,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:58:12,691 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2021-10-28 09:58:12,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:12,702 INFO L225 Difference]: With dead ends: 690 [2021-10-28 09:58:12,702 INFO L226 Difference]: Without dead ends: 690 [2021-10-28 09:58:12,704 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:12,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-10-28 09:58:12,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 618. [2021-10-28 09:58:12,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 455 states have (on average 1.3560439560439561) internal successors, (617), 466 states have internal predecessors, (617), 109 states have call successors, (109), 49 states have call predecessors, (109), 53 states have return successors, (162), 105 states have call predecessors, (162), 98 states have call successors, (162) [2021-10-28 09:58:12,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 888 transitions. [2021-10-28 09:58:12,782 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 888 transitions. Word has length 31 [2021-10-28 09:58:12,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:12,783 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 888 transitions. [2021-10-28 09:58:12,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 3 states have internal predecessors, (20), 3 states have call successors, (8), 6 states have call predecessors, (8), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:58:12,783 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 888 transitions. [2021-10-28 09:58:12,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-10-28 09:58:12,792 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:12,793 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:12,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 09:58:12,793 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:12,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:12,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1025634350, now seen corresponding path program 1 times [2021-10-28 09:58:12,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:12,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320310904] [2021-10-28 09:58:12,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:12,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:12,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:12,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:12,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:13,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:13,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:13,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:13,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:13,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:13,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320310904] [2021-10-28 09:58:13,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320310904] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:13,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:13,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:58:13,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720407699] [2021-10-28 09:58:13,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:58:13,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:13,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:58:13,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:58:13,070 INFO L87 Difference]: Start difference. First operand 618 states and 888 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:58:14,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:14,181 INFO L93 Difference]: Finished difference Result 661 states and 947 transitions. [2021-10-28 09:58:14,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:58:14,182 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2021-10-28 09:58:14,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:14,188 INFO L225 Difference]: With dead ends: 661 [2021-10-28 09:58:14,189 INFO L226 Difference]: Without dead ends: 661 [2021-10-28 09:58:14,189 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:58:14,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2021-10-28 09:58:14,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 628. [2021-10-28 09:58:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 466 states have (on average 1.354077253218884) internal successors, (631), 475 states have internal predecessors, (631), 108 states have call successors, (108), 50 states have call predecessors, (108), 53 states have return successors, (162), 105 states have call predecessors, (162), 98 states have call successors, (162) [2021-10-28 09:58:14,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 901 transitions. [2021-10-28 09:58:14,239 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 901 transitions. Word has length 36 [2021-10-28 09:58:14,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:14,240 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 901 transitions. [2021-10-28 09:58:14,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 3 states have internal predecessors, (26), 3 states have call successors, (7), 6 states have call predecessors, (7), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:58:14,240 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 901 transitions. [2021-10-28 09:58:14,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-10-28 09:58:14,244 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:14,245 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:14,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 09:58:14,245 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:14,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:14,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1273733766, now seen corresponding path program 1 times [2021-10-28 09:58:14,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:14,246 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764142341] [2021-10-28 09:58:14,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:14,247 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:14,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:14,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:14,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 09:58:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:14,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:58:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:14,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:14,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:14,669 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764142341] [2021-10-28 09:58:14,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764142341] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:14,669 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:14,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 09:58:14,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773872349] [2021-10-28 09:58:14,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:58:14,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:14,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:58:14,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:58:14,671 INFO L87 Difference]: Start difference. First operand 628 states and 901 transitions. Second operand has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:16,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:16,475 INFO L93 Difference]: Finished difference Result 705 states and 1000 transitions. [2021-10-28 09:58:16,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:58:16,476 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2021-10-28 09:58:16,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:16,486 INFO L225 Difference]: With dead ends: 705 [2021-10-28 09:58:16,487 INFO L226 Difference]: Without dead ends: 705 [2021-10-28 09:58:16,487 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:58:16,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-10-28 09:58:16,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2021-10-28 09:58:16,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.348360655737705) internal successors, (658), 502 states have internal predecessors, (658), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2021-10-28 09:58:16,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 936 transitions. [2021-10-28 09:58:16,532 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 936 transitions. Word has length 39 [2021-10-28 09:58:16,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:16,535 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 936 transitions. [2021-10-28 09:58:16,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.25) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:16,538 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 936 transitions. [2021-10-28 09:58:16,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-28 09:58:16,542 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:16,542 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:16,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 09:58:16,543 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:16,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:16,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1267590478, now seen corresponding path program 1 times [2021-10-28 09:58:16,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:16,550 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806496495] [2021-10-28 09:58:16,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:16,552 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:16,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:16,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:16,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:16,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:16,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 09:58:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:16,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:58:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:16,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:16,955 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806496495] [2021-10-28 09:58:16,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806496495] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:16,956 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:16,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 09:58:16,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864908872] [2021-10-28 09:58:16,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:58:16,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:16,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:58:16,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:58:16,958 INFO L87 Difference]: Start difference. First operand 658 states and 936 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:19,530 INFO L93 Difference]: Finished difference Result 705 states and 999 transitions. [2021-10-28 09:58:19,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:58:19,531 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 40 [2021-10-28 09:58:19,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:19,537 INFO L225 Difference]: With dead ends: 705 [2021-10-28 09:58:19,538 INFO L226 Difference]: Without dead ends: 705 [2021-10-28 09:58:19,539 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:58:19,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2021-10-28 09:58:19,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 658. [2021-10-28 09:58:19,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 488 states have (on average 1.346311475409836) internal successors, (657), 502 states have internal predecessors, (657), 109 states have call successors, (109), 51 states have call predecessors, (109), 60 states have return successors, (169), 108 states have call predecessors, (169), 99 states have call successors, (169) [2021-10-28 09:58:19,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 935 transitions. [2021-10-28 09:58:19,576 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 935 transitions. Word has length 40 [2021-10-28 09:58:19,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:19,578 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 935 transitions. [2021-10-28 09:58:19,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 7 states have internal predecessors, (28), 3 states have call successors, (7), 7 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:19,579 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 935 transitions. [2021-10-28 09:58:19,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-10-28 09:58:19,580 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:19,580 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:19,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 09:58:19,581 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:19,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:19,582 INFO L85 PathProgramCache]: Analyzing trace with hash -908144207, now seen corresponding path program 1 times [2021-10-28 09:58:19,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:19,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067787294] [2021-10-28 09:58:19,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:19,583 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:19,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:19,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 09:58:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:19,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:58:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:19,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:19,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:19,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067787294] [2021-10-28 09:58:19,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067787294] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:19,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:19,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:19,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756546027] [2021-10-28 09:58:19,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:19,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:19,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:19,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:19,857 INFO L87 Difference]: Start difference. First operand 658 states and 935 transitions. Second operand has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:21,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:21,572 INFO L93 Difference]: Finished difference Result 1186 states and 1741 transitions. [2021-10-28 09:58:21,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:58:21,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 41 [2021-10-28 09:58:21,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:21,586 INFO L225 Difference]: With dead ends: 1186 [2021-10-28 09:58:21,586 INFO L226 Difference]: Without dead ends: 1186 [2021-10-28 09:58:21,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:58:21,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2021-10-28 09:58:21,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1085. [2021-10-28 09:58:21,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 817 states have (on average 1.3635250917992656) internal successors, (1114), 835 states have internal predecessors, (1114), 173 states have call successors, (173), 79 states have call predecessors, (173), 94 states have return successors, (315), 175 states have call predecessors, (315), 163 states have call successors, (315) [2021-10-28 09:58:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1602 transitions. [2021-10-28 09:58:21,656 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1602 transitions. Word has length 41 [2021-10-28 09:58:21,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:21,659 INFO L470 AbstractCegarLoop]: Abstraction has 1085 states and 1602 transitions. [2021-10-28 09:58:21,659 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.625) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (7), 7 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:21,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1602 transitions. [2021-10-28 09:58:21,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-28 09:58:21,662 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:21,663 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:21,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 09:58:21,663 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:21,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:21,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1920333946, now seen corresponding path program 1 times [2021-10-28 09:58:21,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:21,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431726351] [2021-10-28 09:58:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:21,665 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:21,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:21,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:21,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:21,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:21,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-10-28 09:58:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:21,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:58:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:21,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:21,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:21,964 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431726351] [2021-10-28 09:58:21,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431726351] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:21,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:21,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:58:21,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566636878] [2021-10-28 09:58:21,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:58:21,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:21,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:58:21,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:58:21,968 INFO L87 Difference]: Start difference. First operand 1085 states and 1602 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:23,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:23,457 INFO L93 Difference]: Finished difference Result 1167 states and 1721 transitions. [2021-10-28 09:58:23,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:58:23,458 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 42 [2021-10-28 09:58:23,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:23,469 INFO L225 Difference]: With dead ends: 1167 [2021-10-28 09:58:23,469 INFO L226 Difference]: Without dead ends: 1148 [2021-10-28 09:58:23,470 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:58:23,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1148 states. [2021-10-28 09:58:23,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1148 to 1078. [2021-10-28 09:58:23,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 813 states have (on average 1.3640836408364083) internal successors, (1109), 831 states have internal predecessors, (1109), 171 states have call successors, (171), 78 states have call predecessors, (171), 93 states have return successors, (313), 173 states have call predecessors, (313), 161 states have call successors, (313) [2021-10-28 09:58:23,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1593 transitions. [2021-10-28 09:58:23,537 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1593 transitions. Word has length 42 [2021-10-28 09:58:23,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:23,538 INFO L470 AbstractCegarLoop]: Abstraction has 1078 states and 1593 transitions. [2021-10-28 09:58:23,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:23,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1593 transitions. [2021-10-28 09:58:23,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-28 09:58:23,540 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:23,540 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:23,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 09:58:23,541 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:23,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:23,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1961075502, now seen corresponding path program 1 times [2021-10-28 09:58:23,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:23,543 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451445444] [2021-10-28 09:58:23,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:23,544 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:23,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:23,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:23,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:23,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:23,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:23,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:23,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:23,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451445444] [2021-10-28 09:58:23,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451445444] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:23,778 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:23,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-28 09:58:23,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291014506] [2021-10-28 09:58:23,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:58:23,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:23,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:58:23,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-28 09:58:23,780 INFO L87 Difference]: Start difference. First operand 1078 states and 1593 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:58:24,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:24,751 INFO L93 Difference]: Finished difference Result 599 states and 851 transitions. [2021-10-28 09:58:24,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:58:24,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 45 [2021-10-28 09:58:24,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:24,758 INFO L225 Difference]: With dead ends: 599 [2021-10-28 09:58:24,759 INFO L226 Difference]: Without dead ends: 599 [2021-10-28 09:58:24,759 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:24,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2021-10-28 09:58:24,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 598. [2021-10-28 09:58:24,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598 states, 443 states have (on average 1.327313769751693) internal successors, (588), 455 states have internal predecessors, (588), 102 states have call successors, (102), 47 states have call predecessors, (102), 52 states have return successors, (160), 98 states have call predecessors, (160), 94 states have call successors, (160) [2021-10-28 09:58:24,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598 states to 598 states and 850 transitions. [2021-10-28 09:58:24,790 INFO L78 Accepts]: Start accepts. Automaton has 598 states and 850 transitions. Word has length 45 [2021-10-28 09:58:24,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:24,791 INFO L470 AbstractCegarLoop]: Abstraction has 598 states and 850 transitions. [2021-10-28 09:58:24,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-10-28 09:58:24,791 INFO L276 IsEmpty]: Start isEmpty. Operand 598 states and 850 transitions. [2021-10-28 09:58:24,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 09:58:24,792 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:24,792 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:24,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 09:58:24,793 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:24,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:24,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1047559429, now seen corresponding path program 1 times [2021-10-28 09:58:24,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:24,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987667810] [2021-10-28 09:58:24,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:24,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:24,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:24,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:24,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:25,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:25,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-10-28 09:58:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:25,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:58:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:25,095 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:25,095 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987667810] [2021-10-28 09:58:25,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987667810] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:25,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:25,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:58:25,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398381633] [2021-10-28 09:58:25,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:58:25,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:25,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:58:25,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:58:25,098 INFO L87 Difference]: Start difference. First operand 598 states and 850 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:26,019 INFO L93 Difference]: Finished difference Result 625 states and 884 transitions. [2021-10-28 09:58:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:58:26,020 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2021-10-28 09:58:26,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:26,026 INFO L225 Difference]: With dead ends: 625 [2021-10-28 09:58:26,026 INFO L226 Difference]: Without dead ends: 608 [2021-10-28 09:58:26,026 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:58:26,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-10-28 09:58:26,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 596. [2021-10-28 09:58:26,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 442 states have (on average 1.3257918552036199) internal successors, (586), 454 states have internal predecessors, (586), 101 states have call successors, (101), 47 states have call predecessors, (101), 52 states have return successors, (159), 97 states have call predecessors, (159), 93 states have call successors, (159) [2021-10-28 09:58:26,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 846 transitions. [2021-10-28 09:58:26,058 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 846 transitions. Word has length 46 [2021-10-28 09:58:26,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:26,059 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 846 transitions. [2021-10-28 09:58:26,059 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:26,059 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 846 transitions. [2021-10-28 09:58:26,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 09:58:26,061 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:26,061 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:26,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-28 09:58:26,061 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:26,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:26,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1630521075, now seen corresponding path program 1 times [2021-10-28 09:58:26,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:26,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495114150] [2021-10-28 09:58:26,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:26,062 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:26,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:26,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:26,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:26,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:26,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:26,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-10-28 09:58:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:26,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:58:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:26,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:26,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495114150] [2021-10-28 09:58:26,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495114150] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:26,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:26,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:58:26,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532215732] [2021-10-28 09:58:26,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:58:26,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:26,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:58:26,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:58:26,368 INFO L87 Difference]: Start difference. First operand 596 states and 846 transitions. Second operand has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:27,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:27,596 INFO L93 Difference]: Finished difference Result 626 states and 884 transitions. [2021-10-28 09:58:27,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:58:27,597 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2021-10-28 09:58:27,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:27,604 INFO L225 Difference]: With dead ends: 626 [2021-10-28 09:58:27,618 INFO L226 Difference]: Without dead ends: 608 [2021-10-28 09:58:27,619 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:58:27,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2021-10-28 09:58:27,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 596. [2021-10-28 09:58:27,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 442 states have (on average 1.3235294117647058) internal successors, (585), 454 states have internal predecessors, (585), 101 states have call successors, (101), 47 states have call predecessors, (101), 52 states have return successors, (159), 97 states have call predecessors, (159), 93 states have call successors, (159) [2021-10-28 09:58:27,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 845 transitions. [2021-10-28 09:58:27,687 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 845 transitions. Word has length 46 [2021-10-28 09:58:27,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:27,687 INFO L470 AbstractCegarLoop]: Abstraction has 596 states and 845 transitions. [2021-10-28 09:58:27,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:27,688 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 845 transitions. [2021-10-28 09:58:27,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-28 09:58:27,703 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:27,703 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:27,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-28 09:58:27,704 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:27,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:27,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1014081090, now seen corresponding path program 1 times [2021-10-28 09:58:27,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:27,705 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406477197] [2021-10-28 09:58:27,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:27,705 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:27,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:27,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:27,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:27,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-10-28 09:58:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:28,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 09:58:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:28,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:28,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:28,023 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406477197] [2021-10-28 09:58:28,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406477197] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:28,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:28,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:28,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873200537] [2021-10-28 09:58:28,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:28,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:28,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:28,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:28,026 INFO L87 Difference]: Start difference. First operand 596 states and 845 transitions. Second operand has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:29,998 INFO L93 Difference]: Finished difference Result 826 states and 1225 transitions. [2021-10-28 09:58:29,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:58:29,999 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 46 [2021-10-28 09:58:30,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:30,009 INFO L225 Difference]: With dead ends: 826 [2021-10-28 09:58:30,009 INFO L226 Difference]: Without dead ends: 826 [2021-10-28 09:58:30,009 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:58:30,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2021-10-28 09:58:30,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 665. [2021-10-28 09:58:30,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 495 states have (on average 1.3232323232323233) internal successors, (655), 508 states have internal predecessors, (655), 109 states have call successors, (109), 50 states have call predecessors, (109), 60 states have return successors, (184), 110 states have call predecessors, (184), 101 states have call successors, (184) [2021-10-28 09:58:30,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 948 transitions. [2021-10-28 09:58:30,093 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 948 transitions. Word has length 46 [2021-10-28 09:58:30,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:30,094 INFO L470 AbstractCegarLoop]: Abstraction has 665 states and 948 transitions. [2021-10-28 09:58:30,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.25) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:30,094 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 948 transitions. [2021-10-28 09:58:30,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-28 09:58:30,096 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:30,096 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:30,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-28 09:58:30,097 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:30,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:30,098 INFO L85 PathProgramCache]: Analyzing trace with hash -74200962, now seen corresponding path program 1 times [2021-10-28 09:58:30,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:30,099 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522408439] [2021-10-28 09:58:30,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:30,099 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:30,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:30,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:30,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:30,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-10-28 09:58:30,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:30,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:30,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:30,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522408439] [2021-10-28 09:58:30,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522408439] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:30,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:30,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:30,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421415145] [2021-10-28 09:58:30,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:30,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:30,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:30,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:30,369 INFO L87 Difference]: Start difference. First operand 665 states and 948 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 09:58:31,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:31,972 INFO L93 Difference]: Finished difference Result 462 states and 599 transitions. [2021-10-28 09:58:31,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:58:31,973 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2021-10-28 09:58:31,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:31,978 INFO L225 Difference]: With dead ends: 462 [2021-10-28 09:58:31,978 INFO L226 Difference]: Without dead ends: 462 [2021-10-28 09:58:31,979 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:58:31,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-10-28 09:58:31,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 441. [2021-10-28 09:58:31,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 327 states have (on average 1.27217125382263) internal successors, (416), 338 states have internal predecessors, (416), 69 states have call successors, (69), 38 states have call predecessors, (69), 44 states have return successors, (93), 68 states have call predecessors, (93), 61 states have call successors, (93) [2021-10-28 09:58:32,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 578 transitions. [2021-10-28 09:58:32,001 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 578 transitions. Word has length 49 [2021-10-28 09:58:32,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:32,003 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 578 transitions. [2021-10-28 09:58:32,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-10-28 09:58:32,004 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 578 transitions. [2021-10-28 09:58:32,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 09:58:32,005 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:32,006 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:32,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-28 09:58:32,006 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:32,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:32,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1824745018, now seen corresponding path program 1 times [2021-10-28 09:58:32,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:32,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538316683] [2021-10-28 09:58:32,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:32,008 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:32,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:32,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:32,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:32,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-10-28 09:58:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:32,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 09:58:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:32,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:32,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:32,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538316683] [2021-10-28 09:58:32,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538316683] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:32,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:32,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 09:58:32,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251811085] [2021-10-28 09:58:32,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:58:32,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:32,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:58:32,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:58:32,383 INFO L87 Difference]: Start difference. First operand 441 states and 578 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:33,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:33,770 INFO L93 Difference]: Finished difference Result 454 states and 594 transitions. [2021-10-28 09:58:33,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:58:33,771 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2021-10-28 09:58:33,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:33,775 INFO L225 Difference]: With dead ends: 454 [2021-10-28 09:58:33,775 INFO L226 Difference]: Without dead ends: 453 [2021-10-28 09:58:33,776 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:58:33,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2021-10-28 09:58:33,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 449. [2021-10-28 09:58:33,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 334 states have (on average 1.2724550898203593) internal successors, (425), 346 states have internal predecessors, (425), 70 states have call successors, (70), 38 states have call predecessors, (70), 44 states have return successors, (94), 69 states have call predecessors, (94), 62 states have call successors, (94) [2021-10-28 09:58:33,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 589 transitions. [2021-10-28 09:58:33,795 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 589 transitions. Word has length 47 [2021-10-28 09:58:33,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:33,796 INFO L470 AbstractCegarLoop]: Abstraction has 449 states and 589 transitions. [2021-10-28 09:58:33,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:33,796 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 589 transitions. [2021-10-28 09:58:33,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-10-28 09:58:33,798 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:33,798 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:33,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-28 09:58:33,799 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:33,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:33,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1824468188, now seen corresponding path program 1 times [2021-10-28 09:58:33,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:33,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400362572] [2021-10-28 09:58:33,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:33,800 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:33,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:33,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-10-28 09:58:34,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:34,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 09:58:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:34,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:34,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:34,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400362572] [2021-10-28 09:58:34,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400362572] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:34,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:34,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 09:58:34,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063255087] [2021-10-28 09:58:34,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:58:34,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:34,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:58:34,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:58:34,173 INFO L87 Difference]: Start difference. First operand 449 states and 589 transitions. Second operand has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:35,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:35,234 INFO L93 Difference]: Finished difference Result 487 states and 652 transitions. [2021-10-28 09:58:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:58:35,234 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 47 [2021-10-28 09:58:35,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:35,239 INFO L225 Difference]: With dead ends: 487 [2021-10-28 09:58:35,239 INFO L226 Difference]: Without dead ends: 472 [2021-10-28 09:58:35,240 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:58:35,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-10-28 09:58:35,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 459. [2021-10-28 09:58:35,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 343 states have (on average 1.2769679300291545) internal successors, (438), 356 states have internal predecessors, (438), 70 states have call successors, (70), 38 states have call predecessors, (70), 45 states have return successors, (96), 69 states have call predecessors, (96), 62 states have call successors, (96) [2021-10-28 09:58:35,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 604 transitions. [2021-10-28 09:58:35,271 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 604 transitions. Word has length 47 [2021-10-28 09:58:35,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:35,271 INFO L470 AbstractCegarLoop]: Abstraction has 459 states and 604 transitions. [2021-10-28 09:58:35,272 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:35,272 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 604 transitions. [2021-10-28 09:58:35,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-28 09:58:35,273 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:35,274 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:35,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-28 09:58:35,274 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:35,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:35,275 INFO L85 PathProgramCache]: Analyzing trace with hash 463036434, now seen corresponding path program 1 times [2021-10-28 09:58:35,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:35,276 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017721917] [2021-10-28 09:58:35,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:35,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:35,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:35,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:35,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:35,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-10-28 09:58:35,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:35,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 09:58:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:35,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:35,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:35,601 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017721917] [2021-10-28 09:58:35,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017721917] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:35,602 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:35,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-28 09:58:35,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409317320] [2021-10-28 09:58:35,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-28 09:58:35,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:35,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-28 09:58:35,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-28 09:58:35,604 INFO L87 Difference]: Start difference. First operand 459 states and 604 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:38,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:38,074 INFO L93 Difference]: Finished difference Result 590 states and 807 transitions. [2021-10-28 09:58:38,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-28 09:58:38,075 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 48 [2021-10-28 09:58:38,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:38,080 INFO L225 Difference]: With dead ends: 590 [2021-10-28 09:58:38,080 INFO L226 Difference]: Without dead ends: 575 [2021-10-28 09:58:38,081 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:58:38,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2021-10-28 09:58:38,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 444. [2021-10-28 09:58:38,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 332 states have (on average 1.2771084337349397) internal successors, (424), 343 states have internal predecessors, (424), 68 states have call successors, (68), 38 states have call predecessors, (68), 43 states have return successors, (91), 66 states have call predecessors, (91), 60 states have call successors, (91) [2021-10-28 09:58:38,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 583 transitions. [2021-10-28 09:58:38,105 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 583 transitions. Word has length 48 [2021-10-28 09:58:38,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:38,105 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 583 transitions. [2021-10-28 09:58:38,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 7 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:38,106 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 583 transitions. [2021-10-28 09:58:38,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-10-28 09:58:38,107 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:38,108 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:38,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-28 09:58:38,108 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:38,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:38,109 INFO L85 PathProgramCache]: Analyzing trace with hash -97212758, now seen corresponding path program 1 times [2021-10-28 09:58:38,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:38,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985781488] [2021-10-28 09:58:38,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:38,110 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:38,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:38,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:38,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:38,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-10-28 09:58:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:38,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:58:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:38,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:38,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:38,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985781488] [2021-10-28 09:58:38,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985781488] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:38,392 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:38,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 09:58:38,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578189493] [2021-10-28 09:58:38,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:58:38,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:38,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:58:38,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:58:38,396 INFO L87 Difference]: Start difference. First operand 444 states and 583 transitions. Second operand has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:39,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:39,578 INFO L93 Difference]: Finished difference Result 455 states and 596 transitions. [2021-10-28 09:58:39,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:58:39,578 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 49 [2021-10-28 09:58:39,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:39,582 INFO L225 Difference]: With dead ends: 455 [2021-10-28 09:58:39,582 INFO L226 Difference]: Without dead ends: 427 [2021-10-28 09:58:39,583 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:58:39,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-10-28 09:58:39,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 427. [2021-10-28 09:58:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 318 states have (on average 1.279874213836478) internal successors, (407), 330 states have internal predecessors, (407), 66 states have call successors, (66), 36 states have call predecessors, (66), 42 states have return successors, (89), 64 states have call predecessors, (89), 58 states have call successors, (89) [2021-10-28 09:58:39,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 562 transitions. [2021-10-28 09:58:39,601 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 562 transitions. Word has length 49 [2021-10-28 09:58:39,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:39,601 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 562 transitions. [2021-10-28 09:58:39,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0833333333333335) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:39,602 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 562 transitions. [2021-10-28 09:58:39,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-28 09:58:39,603 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:39,603 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:39,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-28 09:58:39,604 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:39,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:39,604 INFO L85 PathProgramCache]: Analyzing trace with hash 193438818, now seen corresponding path program 1 times [2021-10-28 09:58:39,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:39,605 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138327510] [2021-10-28 09:58:39,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:39,605 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:39,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:39,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:39,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:39,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-10-28 09:58:39,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:39,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-10-28 09:58:39,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:39,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:39,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138327510] [2021-10-28 09:58:39,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138327510] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:39,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:39,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:58:39,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626564787] [2021-10-28 09:58:39,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:58:39,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:39,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:58:39,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:58:39,892 INFO L87 Difference]: Start difference. First operand 427 states and 562 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:41,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:41,051 INFO L93 Difference]: Finished difference Result 453 states and 597 transitions. [2021-10-28 09:58:41,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:58:41,051 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 50 [2021-10-28 09:58:41,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:41,055 INFO L225 Difference]: With dead ends: 453 [2021-10-28 09:58:41,055 INFO L226 Difference]: Without dead ends: 423 [2021-10-28 09:58:41,056 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:58:41,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2021-10-28 09:58:41,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 409. [2021-10-28 09:58:41,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 304 states have (on average 1.2861842105263157) internal successors, (391), 316 states have internal predecessors, (391), 64 states have call successors, (64), 34 states have call predecessors, (64), 40 states have return successors, (87), 62 states have call predecessors, (87), 56 states have call successors, (87) [2021-10-28 09:58:41,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 542 transitions. [2021-10-28 09:58:41,073 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 542 transitions. Word has length 50 [2021-10-28 09:58:41,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:41,073 INFO L470 AbstractCegarLoop]: Abstraction has 409 states and 542 transitions. [2021-10-28 09:58:41,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 7 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:41,074 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 542 transitions. [2021-10-28 09:58:41,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-28 09:58:41,075 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:41,075 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:41,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-28 09:58:41,076 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:41,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:41,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1006860761, now seen corresponding path program 1 times [2021-10-28 09:58:41,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:41,077 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063415435] [2021-10-28 09:58:41,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:41,077 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:41,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:41,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:41,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:41,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:41,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:58:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:41,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:41,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:41,389 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063415435] [2021-10-28 09:58:41,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063415435] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:41,390 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:41,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:58:41,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880668551] [2021-10-28 09:58:41,390 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:58:41,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:41,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:58:41,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:58:41,392 INFO L87 Difference]: Start difference. First operand 409 states and 542 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 09:58:43,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:43,914 INFO L93 Difference]: Finished difference Result 600 states and 867 transitions. [2021-10-28 09:58:43,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-28 09:58:43,915 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2021-10-28 09:58:43,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:43,920 INFO L225 Difference]: With dead ends: 600 [2021-10-28 09:58:43,920 INFO L226 Difference]: Without dead ends: 600 [2021-10-28 09:58:43,921 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-10-28 09:58:43,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-10-28 09:58:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 534. [2021-10-28 09:58:43,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 399 states have (on average 1.3433583959899749) internal successors, (536), 410 states have internal predecessors, (536), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2021-10-28 09:58:43,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 769 transitions. [2021-10-28 09:58:43,946 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 769 transitions. Word has length 50 [2021-10-28 09:58:43,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:43,946 INFO L470 AbstractCegarLoop]: Abstraction has 534 states and 769 transitions. [2021-10-28 09:58:43,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 7 states have internal predecessors, (38), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 09:58:43,947 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 769 transitions. [2021-10-28 09:58:43,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 09:58:43,948 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:43,948 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:43,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-28 09:58:43,949 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:43,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:43,949 INFO L85 PathProgramCache]: Analyzing trace with hash 645881872, now seen corresponding path program 1 times [2021-10-28 09:58:43,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:43,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689946676] [2021-10-28 09:58:43,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:43,950 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:44,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:44,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:44,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:44,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:44,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:58:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:44,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:44,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:44,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689946676] [2021-10-28 09:58:44,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689946676] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:44,163 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:44,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-28 09:58:44,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507642680] [2021-10-28 09:58:44,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 09:58:44,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:44,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 09:58:44,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-28 09:58:44,168 INFO L87 Difference]: Start difference. First operand 534 states and 769 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:45,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:45,132 INFO L93 Difference]: Finished difference Result 740 states and 1128 transitions. [2021-10-28 09:58:45,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-28 09:58:45,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2021-10-28 09:58:45,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:45,139 INFO L225 Difference]: With dead ends: 740 [2021-10-28 09:58:45,140 INFO L226 Difference]: Without dead ends: 740 [2021-10-28 09:58:45,140 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:58:45,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2021-10-28 09:58:45,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 561. [2021-10-28 09:58:45,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 419 states have (on average 1.3293556085918854) internal successors, (557), 431 states have internal predecessors, (557), 93 states have call successors, (93), 38 states have call predecessors, (93), 48 states have return successors, (147), 94 states have call predecessors, (147), 85 states have call successors, (147) [2021-10-28 09:58:45,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 797 transitions. [2021-10-28 09:58:45,173 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 797 transitions. Word has length 51 [2021-10-28 09:58:45,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:45,173 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 797 transitions. [2021-10-28 09:58:45,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:45,174 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 797 transitions. [2021-10-28 09:58:45,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 09:58:45,175 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:45,175 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:45,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-28 09:58:45,176 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:45,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:45,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1801633520, now seen corresponding path program 1 times [2021-10-28 09:58:45,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:45,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488787539] [2021-10-28 09:58:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:45,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:45,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:45,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:45,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:45,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:45,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:58:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:45,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:45,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:45,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:45,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488787539] [2021-10-28 09:58:45,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488787539] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:45,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:45,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:45,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886826657] [2021-10-28 09:58:45,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:45,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:45,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:45,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:45,410 INFO L87 Difference]: Start difference. First operand 561 states and 797 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:46,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:46,070 INFO L93 Difference]: Finished difference Result 579 states and 821 transitions. [2021-10-28 09:58:46,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-28 09:58:46,073 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 51 [2021-10-28 09:58:46,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:46,078 INFO L225 Difference]: With dead ends: 579 [2021-10-28 09:58:46,078 INFO L226 Difference]: Without dead ends: 579 [2021-10-28 09:58:46,079 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:58:46,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2021-10-28 09:58:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 564. [2021-10-28 09:58:46,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 422 states have (on average 1.3293838862559242) internal successors, (561), 434 states have internal predecessors, (561), 93 states have call successors, (93), 38 states have call predecessors, (93), 48 states have return successors, (147), 94 states have call predecessors, (147), 85 states have call successors, (147) [2021-10-28 09:58:46,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 801 transitions. [2021-10-28 09:58:46,103 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 801 transitions. Word has length 51 [2021-10-28 09:58:46,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:46,104 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 801 transitions. [2021-10-28 09:58:46,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 6 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:46,104 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 801 transitions. [2021-10-28 09:58:46,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 09:58:46,105 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:46,105 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:46,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-28 09:58:46,106 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:46,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:46,107 INFO L85 PathProgramCache]: Analyzing trace with hash 499189070, now seen corresponding path program 1 times [2021-10-28 09:58:46,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:46,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756176462] [2021-10-28 09:58:46,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:46,108 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:46,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:46,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:46,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:46,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:46,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:46,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:58:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:46,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:46,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756176462] [2021-10-28 09:58:46,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756176462] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:46,408 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:46,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-28 09:58:46,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875587222] [2021-10-28 09:58:46,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-28 09:58:46,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:46,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-28 09:58:46,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-10-28 09:58:46,412 INFO L87 Difference]: Start difference. First operand 564 states and 801 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 09:58:48,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:48,009 INFO L93 Difference]: Finished difference Result 619 states and 929 transitions. [2021-10-28 09:58:48,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:58:48,010 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2021-10-28 09:58:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:48,015 INFO L225 Difference]: With dead ends: 619 [2021-10-28 09:58:48,015 INFO L226 Difference]: Without dead ends: 619 [2021-10-28 09:58:48,016 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:58:48,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-10-28 09:58:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 524. [2021-10-28 09:58:48,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 390 states have (on average 1.3307692307692307) internal successors, (519), 400 states have internal predecessors, (519), 91 states have call successors, (91), 37 states have call predecessors, (91), 42 states have return successors, (141), 88 states have call predecessors, (141), 84 states have call successors, (141) [2021-10-28 09:58:48,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 751 transitions. [2021-10-28 09:58:48,067 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 751 transitions. Word has length 51 [2021-10-28 09:58:48,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:48,068 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 751 transitions. [2021-10-28 09:58:48,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 7 states have internal predecessors, (39), 4 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-10-28 09:58:48,068 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 751 transitions. [2021-10-28 09:58:48,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-28 09:58:48,069 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:48,069 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:48,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-28 09:58:48,070 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:48,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:48,071 INFO L85 PathProgramCache]: Analyzing trace with hash -999496148, now seen corresponding path program 1 times [2021-10-28 09:58:48,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:48,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388248035] [2021-10-28 09:58:48,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:48,072 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:48,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:48,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:48,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:48,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:48,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:58:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:48,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:48,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:48,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:48,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:48,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388248035] [2021-10-28 09:58:48,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388248035] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:48,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:48,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 09:58:48,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446291815] [2021-10-28 09:58:48,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:58:48,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:48,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:58:48,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:58:48,348 INFO L87 Difference]: Start difference. First operand 524 states and 751 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:49,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:49,322 INFO L93 Difference]: Finished difference Result 544 states and 778 transitions. [2021-10-28 09:58:49,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:58:49,323 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2021-10-28 09:58:49,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:49,327 INFO L225 Difference]: With dead ends: 544 [2021-10-28 09:58:49,328 INFO L226 Difference]: Without dead ends: 543 [2021-10-28 09:58:49,328 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:58:49,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2021-10-28 09:58:49,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 531. [2021-10-28 09:58:49,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 396 states have (on average 1.3282828282828283) internal successors, (526), 407 states have internal predecessors, (526), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2021-10-28 09:58:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 760 transitions. [2021-10-28 09:58:49,351 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 760 transitions. Word has length 52 [2021-10-28 09:58:49,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:49,352 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 760 transitions. [2021-10-28 09:58:49,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:49,353 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 760 transitions. [2021-10-28 09:58:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-28 09:58:49,354 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:49,354 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:49,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-28 09:58:49,354 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:49,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:49,355 INFO L85 PathProgramCache]: Analyzing trace with hash -999772978, now seen corresponding path program 1 times [2021-10-28 09:58:49,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:49,355 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804170321] [2021-10-28 09:58:49,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:49,356 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:49,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:49,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:49,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:49,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:49,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:58:49,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:49,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:49,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:49,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804170321] [2021-10-28 09:58:49,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804170321] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:49,698 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:49,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 09:58:49,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022022034] [2021-10-28 09:58:49,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:58:49,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:49,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:58:49,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:58:49,701 INFO L87 Difference]: Start difference. First operand 531 states and 760 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:50,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:50,565 INFO L93 Difference]: Finished difference Result 559 states and 794 transitions. [2021-10-28 09:58:50,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-28 09:58:50,569 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) Word has length 52 [2021-10-28 09:58:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:50,574 INFO L225 Difference]: With dead ends: 559 [2021-10-28 09:58:50,575 INFO L226 Difference]: Without dead ends: 538 [2021-10-28 09:58:50,575 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:58:50,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-10-28 09:58:50,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 530. [2021-10-28 09:58:50,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 395 states have (on average 1.3265822784810126) internal successors, (524), 406 states have internal predecessors, (524), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2021-10-28 09:58:50,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 758 transitions. [2021-10-28 09:58:50,605 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 758 transitions. Word has length 52 [2021-10-28 09:58:50,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:50,606 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 758 transitions. [2021-10-28 09:58:50,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 1 states have call successors, (5) [2021-10-28 09:58:50,607 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 758 transitions. [2021-10-28 09:58:50,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-28 09:58:50,609 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:50,609 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:50,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-28 09:58:50,609 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:50,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:50,610 INFO L85 PathProgramCache]: Analyzing trace with hash -639415020, now seen corresponding path program 1 times [2021-10-28 09:58:50,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:50,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54406262] [2021-10-28 09:58:50,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:50,611 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:50,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:50,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:50,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:50,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:50,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:50,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-10-28 09:58:50,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:50,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:58:50,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:50,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-28 09:58:50,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:50,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:50,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:50,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54406262] [2021-10-28 09:58:50,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54406262] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:50,892 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:50,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-28 09:58:50,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495056199] [2021-10-28 09:58:50,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-28 09:58:50,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:50,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-28 09:58:50,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-28 09:58:50,895 INFO L87 Difference]: Start difference. First operand 530 states and 758 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 09:58:51,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:51,596 INFO L93 Difference]: Finished difference Result 549 states and 800 transitions. [2021-10-28 09:58:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:58:51,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2021-10-28 09:58:51,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:51,602 INFO L225 Difference]: With dead ends: 549 [2021-10-28 09:58:51,602 INFO L226 Difference]: Without dead ends: 549 [2021-10-28 09:58:51,602 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:58:51,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-10-28 09:58:51,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 529. [2021-10-28 09:58:51,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 394 states have (on average 1.3197969543147208) internal successors, (520), 405 states have internal predecessors, (520), 92 states have call successors, (92), 37 states have call predecessors, (92), 42 states have return successors, (142), 89 states have call predecessors, (142), 85 states have call successors, (142) [2021-10-28 09:58:51,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 754 transitions. [2021-10-28 09:58:51,625 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 754 transitions. Word has length 58 [2021-10-28 09:58:51,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:51,626 INFO L470 AbstractCegarLoop]: Abstraction has 529 states and 754 transitions. [2021-10-28 09:58:51,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (12), 7 states have call predecessors, (12), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 09:58:51,626 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 754 transitions. [2021-10-28 09:58:51,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-28 09:58:51,627 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:51,628 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:51,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-28 09:58:51,628 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:51,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:51,629 INFO L85 PathProgramCache]: Analyzing trace with hash 1490997952, now seen corresponding path program 1 times [2021-10-28 09:58:51,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:51,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252082909] [2021-10-28 09:58:51,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:51,630 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:51,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:51,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:51,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:51,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:51,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:51,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-10-28 09:58:51,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:51,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:51,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:51,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:51,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252082909] [2021-10-28 09:58:51,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252082909] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:51,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:51,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:58:51,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601170376] [2021-10-28 09:58:51,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:58:51,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:51,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:58:51,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:58:51,927 INFO L87 Difference]: Start difference. First operand 529 states and 754 transitions. Second operand has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:53,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:53,663 INFO L93 Difference]: Finished difference Result 671 states and 995 transitions. [2021-10-28 09:58:53,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:58:53,664 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2021-10-28 09:58:53,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:53,669 INFO L225 Difference]: With dead ends: 671 [2021-10-28 09:58:53,669 INFO L226 Difference]: Without dead ends: 639 [2021-10-28 09:58:53,670 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:58:53,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-10-28 09:58:53,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 560. [2021-10-28 09:58:53,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 415 states have (on average 1.344578313253012) internal successors, (558), 426 states have internal predecessors, (558), 101 states have call successors, (101), 37 states have call predecessors, (101), 43 states have return successors, (165), 98 states have call predecessors, (165), 94 states have call successors, (165) [2021-10-28 09:58:53,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 824 transitions. [2021-10-28 09:58:53,698 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 824 transitions. Word has length 53 [2021-10-28 09:58:53,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:53,699 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 824 transitions. [2021-10-28 09:58:53,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.555555555555555) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 6 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2021-10-28 09:58:53,699 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 824 transitions. [2021-10-28 09:58:53,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-28 09:58:53,700 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:53,701 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:53,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-28 09:58:53,701 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:53,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:53,702 INFO L85 PathProgramCache]: Analyzing trace with hash -538464897, now seen corresponding path program 1 times [2021-10-28 09:58:53,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:53,702 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531592025] [2021-10-28 09:58:53,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:53,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:53,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:53,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:53,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:53,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:53,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-10-28 09:58:53,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:54,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:54,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:54,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:58:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:54,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:54,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:54,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531592025] [2021-10-28 09:58:54,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531592025] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:54,126 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:54,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 09:58:54,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013969539] [2021-10-28 09:58:54,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:58:54,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:54,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:58:54,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:58:54,130 INFO L87 Difference]: Start difference. First operand 560 states and 824 transitions. Second operand has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 09:58:54,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:54,897 INFO L93 Difference]: Finished difference Result 390 states and 522 transitions. [2021-10-28 09:58:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-28 09:58:54,898 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 63 [2021-10-28 09:58:54,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:54,901 INFO L225 Difference]: With dead ends: 390 [2021-10-28 09:58:54,901 INFO L226 Difference]: Without dead ends: 390 [2021-10-28 09:58:54,902 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:58:54,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-10-28 09:58:54,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 338. [2021-10-28 09:58:54,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 246 states have (on average 1.2560975609756098) internal successors, (309), 254 states have internal predecessors, (309), 59 states have call successors, (59), 31 states have call predecessors, (59), 32 states have return successors, (74), 54 states have call predecessors, (74), 53 states have call successors, (74) [2021-10-28 09:58:54,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 442 transitions. [2021-10-28 09:58:54,916 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 442 transitions. Word has length 63 [2021-10-28 09:58:54,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:54,916 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 442 transitions. [2021-10-28 09:58:54,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (12), 7 states have call predecessors, (12), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 09:58:54,917 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 442 transitions. [2021-10-28 09:58:54,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-28 09:58:54,918 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:54,918 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:54,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-28 09:58:54,918 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:54,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:54,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1094959805, now seen corresponding path program 1 times [2021-10-28 09:58:54,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:54,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101985430] [2021-10-28 09:58:54,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:54,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:55,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-28 09:58:55,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:55,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:55,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:55,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:55,311 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101985430] [2021-10-28 09:58:55,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101985430] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:55,312 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:55,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-28 09:58:55,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238955741] [2021-10-28 09:58:55,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:58:55,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:55,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:58:55,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:58:55,314 INFO L87 Difference]: Start difference. First operand 338 states and 442 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 09:58:56,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:56,416 INFO L93 Difference]: Finished difference Result 343 states and 451 transitions. [2021-10-28 09:58:56,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:58:56,417 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) Word has length 58 [2021-10-28 09:58:56,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:56,419 INFO L225 Difference]: With dead ends: 343 [2021-10-28 09:58:56,419 INFO L226 Difference]: Without dead ends: 304 [2021-10-28 09:58:56,420 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:58:56,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2021-10-28 09:58:56,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 298. [2021-10-28 09:58:56,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 214 states have (on average 1.2757009345794392) internal successors, (273), 220 states have internal predecessors, (273), 55 states have call successors, (55), 28 states have call predecessors, (55), 28 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2021-10-28 09:58:56,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 398 transitions. [2021-10-28 09:58:56,432 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 398 transitions. Word has length 58 [2021-10-28 09:58:56,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:56,432 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 398 transitions. [2021-10-28 09:58:56,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (8), 7 states have call predecessors, (8), 4 states have return successors, (6), 4 states have call predecessors, (6), 1 states have call successors, (6) [2021-10-28 09:58:56,433 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 398 transitions. [2021-10-28 09:58:56,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-10-28 09:58:56,434 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:56,434 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:56,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-28 09:58:56,435 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:56,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:56,435 INFO L85 PathProgramCache]: Analyzing trace with hash -703797032, now seen corresponding path program 1 times [2021-10-28 09:58:56,435 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:56,436 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732171155] [2021-10-28 09:58:56,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:56,436 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:56,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:56,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:56,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:56,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:56,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-10-28 09:58:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:56,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:56,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:58:56,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:56,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:58:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:56,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:56,741 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732171155] [2021-10-28 09:58:56,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732171155] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:56,741 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:56,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 09:58:56,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078361863] [2021-10-28 09:58:56,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:58:56,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:56,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:58:56,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:58:56,745 INFO L87 Difference]: Start difference. First operand 298 states and 398 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 09:58:57,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:57,594 INFO L93 Difference]: Finished difference Result 316 states and 429 transitions. [2021-10-28 09:58:57,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-28 09:58:57,595 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2021-10-28 09:58:57,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:57,597 INFO L225 Difference]: With dead ends: 316 [2021-10-28 09:58:57,598 INFO L226 Difference]: Without dead ends: 316 [2021-10-28 09:58:57,598 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2021-10-28 09:58:57,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2021-10-28 09:58:57,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 298. [2021-10-28 09:58:57,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 214 states have (on average 1.266355140186916) internal successors, (271), 220 states have internal predecessors, (271), 55 states have call successors, (55), 28 states have call predecessors, (55), 28 states have return successors, (70), 50 states have call predecessors, (70), 50 states have call successors, (70) [2021-10-28 09:58:57,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 396 transitions. [2021-10-28 09:58:57,611 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 396 transitions. Word has length 67 [2021-10-28 09:58:57,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:57,611 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 396 transitions. [2021-10-28 09:58:57,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (13), 9 states have call predecessors, (13), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 09:58:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 396 transitions. [2021-10-28 09:58:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-28 09:58:57,613 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:57,613 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:57,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-28 09:58:57,614 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:57,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:57,614 INFO L85 PathProgramCache]: Analyzing trace with hash -194321691, now seen corresponding path program 1 times [2021-10-28 09:58:57,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:57,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928249043] [2021-10-28 09:58:57,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:57,615 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:57,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:57,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:57,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-10-28 09:58:57,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:57,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:57,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:58:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:57,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:58:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:57,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:57,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:57,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928249043] [2021-10-28 09:58:57,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928249043] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:57,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:57,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 09:58:57,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031666905] [2021-10-28 09:58:57,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:58:57,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:57,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:58:57,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:58:57,895 INFO L87 Difference]: Start difference. First operand 298 states and 396 transitions. Second operand has 12 states, 12 states have (on average 4.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 09:58:58,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:58,427 INFO L93 Difference]: Finished difference Result 330 states and 453 transitions. [2021-10-28 09:58:58,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:58:58,428 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 68 [2021-10-28 09:58:58,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:58,430 INFO L225 Difference]: With dead ends: 330 [2021-10-28 09:58:58,430 INFO L226 Difference]: Without dead ends: 330 [2021-10-28 09:58:58,431 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:58:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-10-28 09:58:58,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 303. [2021-10-28 09:58:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 218 states have (on average 1.261467889908257) internal successors, (275), 224 states have internal predecessors, (275), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (79), 51 states have call predecessors, (79), 50 states have call successors, (79) [2021-10-28 09:58:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 409 transitions. [2021-10-28 09:58:58,444 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 409 transitions. Word has length 68 [2021-10-28 09:58:58,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:58,445 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 409 transitions. [2021-10-28 09:58:58,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (13), 8 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 09:58:58,445 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 409 transitions. [2021-10-28 09:58:58,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-10-28 09:58:58,447 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:58,447 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:58,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-28 09:58:58,448 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:58,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash -198191505, now seen corresponding path program 1 times [2021-10-28 09:58:58,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:58,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134590160] [2021-10-28 09:58:58,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:58,449 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:58,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:58,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:58,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:58,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:58,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-10-28 09:58:58,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:58,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:58,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:58:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:58,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:58:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:58,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:58,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:58,681 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134590160] [2021-10-28 09:58:58,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134590160] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:58,681 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:58,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:58:58,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739967983] [2021-10-28 09:58:58,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:58:58,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:58,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:58:58,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:58:58,683 INFO L87 Difference]: Start difference. First operand 303 states and 409 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 09:58:59,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:58:59,304 INFO L93 Difference]: Finished difference Result 474 states and 674 transitions. [2021-10-28 09:58:59,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:58:59,305 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 69 [2021-10-28 09:58:59,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:58:59,308 INFO L225 Difference]: With dead ends: 474 [2021-10-28 09:58:59,309 INFO L226 Difference]: Without dead ends: 474 [2021-10-28 09:58:59,309 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:58:59,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-10-28 09:58:59,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 307. [2021-10-28 09:58:59,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 222 states have (on average 1.2657657657657657) internal successors, (281), 228 states have internal predecessors, (281), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (79), 51 states have call predecessors, (79), 50 states have call successors, (79) [2021-10-28 09:58:59,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 415 transitions. [2021-10-28 09:58:59,326 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 415 transitions. Word has length 69 [2021-10-28 09:58:59,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:58:59,327 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 415 transitions. [2021-10-28 09:58:59,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 8 states have call predecessors, (13), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-10-28 09:58:59,327 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 415 transitions. [2021-10-28 09:58:59,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-10-28 09:58:59,328 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:58:59,329 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:58:59,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-28 09:58:59,329 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:58:59,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:58:59,330 INFO L85 PathProgramCache]: Analyzing trace with hash 392199007, now seen corresponding path program 1 times [2021-10-28 09:58:59,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:58:59,330 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555660550] [2021-10-28 09:58:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:58:59,331 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:58:59,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:59,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:58:59,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:59,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:58:59,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:59,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:58:59,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:59,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-10-28 09:58:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:59,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:58:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:59,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:58:59,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:59,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:58:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:58:59,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:58:59,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:58:59,585 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555660550] [2021-10-28 09:58:59,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555660550] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:58:59,585 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:58:59,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-10-28 09:58:59,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073256013] [2021-10-28 09:58:59,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-28 09:58:59,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:58:59,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-28 09:58:59,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-10-28 09:58:59,587 INFO L87 Difference]: Start difference. First operand 307 states and 415 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 09:59:00,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:00,581 INFO L93 Difference]: Finished difference Result 529 states and 764 transitions. [2021-10-28 09:59:00,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:59:00,582 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2021-10-28 09:59:00,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:00,587 INFO L225 Difference]: With dead ends: 529 [2021-10-28 09:59:00,587 INFO L226 Difference]: Without dead ends: 529 [2021-10-28 09:59:00,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:59:00,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2021-10-28 09:59:00,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 490. [2021-10-28 09:59:00,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 357 states have (on average 1.2913165266106443) internal successors, (461), 366 states have internal predecessors, (461), 89 states have call successors, (89), 35 states have call predecessors, (89), 43 states have return successors, (153), 89 states have call predecessors, (153), 85 states have call successors, (153) [2021-10-28 09:59:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 703 transitions. [2021-10-28 09:59:00,609 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 703 transitions. Word has length 71 [2021-10-28 09:59:00,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:00,610 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 703 transitions. [2021-10-28 09:59:00,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (13), 9 states have call predecessors, (13), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-10-28 09:59:00,610 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 703 transitions. [2021-10-28 09:59:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-10-28 09:59:00,612 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:00,612 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:00,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-28 09:59:00,613 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:00,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:00,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1252090646, now seen corresponding path program 1 times [2021-10-28 09:59:00,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:00,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990292044] [2021-10-28 09:59:00,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:00,614 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:00,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:00,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:00,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:00,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:00,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:00,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-10-28 09:59:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:00,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:00,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:00,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:01,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:01,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990292044] [2021-10-28 09:59:01,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990292044] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:01,006 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:01,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-10-28 09:59:01,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765907826] [2021-10-28 09:59:01,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-28 09:59:01,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:01,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-28 09:59:01,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-10-28 09:59:01,008 INFO L87 Difference]: Start difference. First operand 490 states and 703 transitions. Second operand has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-10-28 09:59:01,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:01,612 INFO L93 Difference]: Finished difference Result 493 states and 705 transitions. [2021-10-28 09:59:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:59:01,612 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2021-10-28 09:59:01,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:01,617 INFO L225 Difference]: With dead ends: 493 [2021-10-28 09:59:01,617 INFO L226 Difference]: Without dead ends: 493 [2021-10-28 09:59:01,618 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:59:01,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2021-10-28 09:59:01,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 484. [2021-10-28 09:59:01,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 353 states have (on average 1.2832861189801699) internal successors, (453), 361 states have internal predecessors, (453), 88 states have call successors, (88), 35 states have call predecessors, (88), 42 states have return successors, (146), 88 states have call predecessors, (146), 84 states have call successors, (146) [2021-10-28 09:59:01,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 687 transitions. [2021-10-28 09:59:01,639 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 687 transitions. Word has length 72 [2021-10-28 09:59:01,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:01,639 INFO L470 AbstractCegarLoop]: Abstraction has 484 states and 687 transitions. [2021-10-28 09:59:01,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.923076923076923) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 9 states have call predecessors, (13), 3 states have return successors, (8), 3 states have call predecessors, (8), 1 states have call successors, (8) [2021-10-28 09:59:01,640 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 687 transitions. [2021-10-28 09:59:01,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-28 09:59:01,642 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:01,642 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:01,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-28 09:59:01,643 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:01,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:01,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1761504416, now seen corresponding path program 1 times [2021-10-28 09:59:01,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:01,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147851023] [2021-10-28 09:59:01,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:01,644 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:01,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:01,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:01,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-10-28 09:59:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:01,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:01,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:01,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:01,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:01,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:01,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:01,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-10-28 09:59:01,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:01,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:01,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:01,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147851023] [2021-10-28 09:59:01,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147851023] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:01,990 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:01,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 09:59:01,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278525685] [2021-10-28 09:59:01,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:59:01,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:01,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:59:01,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:59:01,992 INFO L87 Difference]: Start difference. First operand 484 states and 687 transitions. Second operand has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-28 09:59:03,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:03,083 INFO L93 Difference]: Finished difference Result 450 states and 629 transitions. [2021-10-28 09:59:03,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:59:03,087 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 83 [2021-10-28 09:59:03,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:03,091 INFO L225 Difference]: With dead ends: 450 [2021-10-28 09:59:03,092 INFO L226 Difference]: Without dead ends: 450 [2021-10-28 09:59:03,092 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2021-10-28 09:59:03,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2021-10-28 09:59:03,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 436. [2021-10-28 09:59:03,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 320 states have (on average 1.296875) internal successors, (415), 329 states have internal predecessors, (415), 79 states have call successors, (79), 33 states have call predecessors, (79), 36 states have return successors, (110), 74 states have call predecessors, (110), 75 states have call successors, (110) [2021-10-28 09:59:03,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 604 transitions. [2021-10-28 09:59:03,110 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 604 transitions. Word has length 83 [2021-10-28 09:59:03,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:03,110 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 604 transitions. [2021-10-28 09:59:03,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (14), 10 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2021-10-28 09:59:03,111 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 604 transitions. [2021-10-28 09:59:03,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-10-28 09:59:03,113 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:03,113 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:03,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-28 09:59:03,113 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:03,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:03,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1176411851, now seen corresponding path program 1 times [2021-10-28 09:59:03,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:03,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228812497] [2021-10-28 09:59:03,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:03,115 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:03,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:03,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:03,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:03,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-28 09:59:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:03,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:03,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:03,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:03,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:03,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:03,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:03,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:03,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-10-28 09:59:03,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:03,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:03,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:03,783 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228812497] [2021-10-28 09:59:03,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228812497] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:03,784 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:03,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-10-28 09:59:03,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942762158] [2021-10-28 09:59:03,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:59:03,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:03,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:59:03,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:59:03,786 INFO L87 Difference]: Start difference. First operand 436 states and 604 transitions. Second operand has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2021-10-28 09:59:04,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:04,741 INFO L93 Difference]: Finished difference Result 483 states and 678 transitions. [2021-10-28 09:59:04,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 09:59:04,741 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2021-10-28 09:59:04,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:04,746 INFO L225 Difference]: With dead ends: 483 [2021-10-28 09:59:04,746 INFO L226 Difference]: Without dead ends: 461 [2021-10-28 09:59:04,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2021-10-28 09:59:04,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-10-28 09:59:04,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 447. [2021-10-28 09:59:04,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 329 states have (on average 1.2887537993920972) internal successors, (424), 339 states have internal predecessors, (424), 79 states have call successors, (79), 33 states have call predecessors, (79), 38 states have return successors, (116), 75 states have call predecessors, (116), 75 states have call successors, (116) [2021-10-28 09:59:04,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 619 transitions. [2021-10-28 09:59:04,778 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 619 transitions. Word has length 92 [2021-10-28 09:59:04,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:04,779 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 619 transitions. [2021-10-28 09:59:04,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.9565217391304346) internal successors, (68), 11 states have internal predecessors, (68), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2021-10-28 09:59:04,779 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 619 transitions. [2021-10-28 09:59:04,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-28 09:59:04,782 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:04,782 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:04,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-28 09:59:04,783 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:04,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:04,784 INFO L85 PathProgramCache]: Analyzing trace with hash 702793907, now seen corresponding path program 1 times [2021-10-28 09:59:04,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:04,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461663645] [2021-10-28 09:59:04,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:04,785 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:04,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:04,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:04,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:04,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:05,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-28 09:59:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:05,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:05,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:05,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:05,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:05,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:05,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:05,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:05,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-10-28 09:59:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:05,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:05,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:05,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461663645] [2021-10-28 09:59:05,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461663645] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:05,446 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:05,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-10-28 09:59:05,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837919919] [2021-10-28 09:59:05,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:59:05,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:05,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:59:05,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:59:05,451 INFO L87 Difference]: Start difference. First operand 447 states and 619 transitions. Second operand has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2021-10-28 09:59:06,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:06,622 INFO L93 Difference]: Finished difference Result 481 states and 674 transitions. [2021-10-28 09:59:06,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-28 09:59:06,623 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2021-10-28 09:59:06,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:06,627 INFO L225 Difference]: With dead ends: 481 [2021-10-28 09:59:06,627 INFO L226 Difference]: Without dead ends: 459 [2021-10-28 09:59:06,628 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2021-10-28 09:59:06,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2021-10-28 09:59:06,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 434. [2021-10-28 09:59:06,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 319 states have (on average 1.297805642633229) internal successors, (414), 328 states have internal predecessors, (414), 78 states have call successors, (78), 33 states have call predecessors, (78), 36 states have return successors, (108), 73 states have call predecessors, (108), 74 states have call successors, (108) [2021-10-28 09:59:06,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 600 transitions. [2021-10-28 09:59:06,645 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 600 transitions. Word has length 93 [2021-10-28 09:59:06,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:06,646 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 600 transitions. [2021-10-28 09:59:06,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.0) internal successors, (69), 11 states have internal predecessors, (69), 3 states have call successors, (13), 10 states have call predecessors, (13), 5 states have return successors, (11), 6 states have call predecessors, (11), 2 states have call successors, (11) [2021-10-28 09:59:06,646 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 600 transitions. [2021-10-28 09:59:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-28 09:59:06,648 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:06,648 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:06,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-28 09:59:06,649 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:06,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:06,650 INFO L85 PathProgramCache]: Analyzing trace with hash 940384513, now seen corresponding path program 1 times [2021-10-28 09:59:06,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:06,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129255461] [2021-10-28 09:59:06,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:06,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:06,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:06,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:06,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-28 09:59:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:07,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:07,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:07,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:07,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:07,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:07,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:07,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:07,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-10-28 09:59:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-10-28 09:59:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:07,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:07,333 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129255461] [2021-10-28 09:59:07,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129255461] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:07,333 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:07,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-10-28 09:59:07,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005317931] [2021-10-28 09:59:07,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:59:07,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:07,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:59:07,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:59:07,337 INFO L87 Difference]: Start difference. First operand 434 states and 600 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-10-28 09:59:10,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:10,289 INFO L93 Difference]: Finished difference Result 860 states and 1205 transitions. [2021-10-28 09:59:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-28 09:59:10,290 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 103 [2021-10-28 09:59:10,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:10,297 INFO L225 Difference]: With dead ends: 860 [2021-10-28 09:59:10,297 INFO L226 Difference]: Without dead ends: 827 [2021-10-28 09:59:10,299 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=289, Invalid=2261, Unknown=0, NotChecked=0, Total=2550 [2021-10-28 09:59:10,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2021-10-28 09:59:10,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 805. [2021-10-28 09:59:10,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 596 states have (on average 1.3120805369127517) internal successors, (782), 614 states have internal predecessors, (782), 143 states have call successors, (143), 57 states have call predecessors, (143), 65 states have return successors, (208), 134 states have call predecessors, (208), 139 states have call successors, (208) [2021-10-28 09:59:10,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1133 transitions. [2021-10-28 09:59:10,331 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1133 transitions. Word has length 103 [2021-10-28 09:59:10,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:10,332 INFO L470 AbstractCegarLoop]: Abstraction has 805 states and 1133 transitions. [2021-10-28 09:59:10,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-10-28 09:59:10,332 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1133 transitions. [2021-10-28 09:59:10,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-28 09:59:10,335 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:10,335 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:10,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-28 09:59:10,336 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:10,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:10,336 INFO L85 PathProgramCache]: Analyzing trace with hash 911884223, now seen corresponding path program 1 times [2021-10-28 09:59:10,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:10,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285617876] [2021-10-28 09:59:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:10,337 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:10,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:10,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:10,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-28 09:59:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:10,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:10,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:10,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:10,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:10,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:10,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:10,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:10,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:10,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:11,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-10-28 09:59:11,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:11,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-10-28 09:59:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:11,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:11,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:11,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285617876] [2021-10-28 09:59:11,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285617876] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:11,029 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:11,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2021-10-28 09:59:11,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753019411] [2021-10-28 09:59:11,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-28 09:59:11,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:11,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-28 09:59:11,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2021-10-28 09:59:11,032 INFO L87 Difference]: Start difference. First operand 805 states and 1133 transitions. Second operand has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-10-28 09:59:14,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:14,699 INFO L93 Difference]: Finished difference Result 847 states and 1189 transitions. [2021-10-28 09:59:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-28 09:59:14,700 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 103 [2021-10-28 09:59:14,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:14,707 INFO L225 Difference]: With dead ends: 847 [2021-10-28 09:59:14,707 INFO L226 Difference]: Without dead ends: 814 [2021-10-28 09:59:14,709 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=257, Invalid=1723, Unknown=0, NotChecked=0, Total=1980 [2021-10-28 09:59:14,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2021-10-28 09:59:14,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 424. [2021-10-28 09:59:14,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 313 states have (on average 1.3003194888178913) internal successors, (407), 322 states have internal predecessors, (407), 75 states have call successors, (75), 32 states have call predecessors, (75), 35 states have return successors, (105), 70 states have call predecessors, (105), 71 states have call successors, (105) [2021-10-28 09:59:14,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 587 transitions. [2021-10-28 09:59:14,732 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 587 transitions. Word has length 103 [2021-10-28 09:59:14,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:14,732 INFO L470 AbstractCegarLoop]: Abstraction has 424 states and 587 transitions. [2021-10-28 09:59:14,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 3.347826086956522) internal successors, (77), 11 states have internal predecessors, (77), 5 states have call successors, (14), 11 states have call predecessors, (14), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2021-10-28 09:59:14,733 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 587 transitions. [2021-10-28 09:59:14,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-10-28 09:59:14,735 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:14,735 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:14,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-28 09:59:14,736 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:14,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:14,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1426002147, now seen corresponding path program 1 times [2021-10-28 09:59:14,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:14,737 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297873166] [2021-10-28 09:59:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:14,737 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:14,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:14,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:14,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:14,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:14,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:14,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:14,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-28 09:59:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:15,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 09:59:15,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:15,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:15,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:15,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:15,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:15,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:15,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:15,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:15,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:15,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:15,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:15,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-10-28 09:59:15,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-10-28 09:59:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:15,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-10-28 09:59:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:15,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:15,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:15,506 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297873166] [2021-10-28 09:59:15,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297873166] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:15,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:15,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-10-28 09:59:15,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101869482] [2021-10-28 09:59:15,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-28 09:59:15,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:15,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-28 09:59:15,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:59:15,533 INFO L87 Difference]: Start difference. First operand 424 states and 587 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-10-28 09:59:16,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:16,677 INFO L93 Difference]: Finished difference Result 478 states and 676 transitions. [2021-10-28 09:59:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-28 09:59:16,681 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 108 [2021-10-28 09:59:16,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:16,685 INFO L225 Difference]: With dead ends: 478 [2021-10-28 09:59:16,686 INFO L226 Difference]: Without dead ends: 454 [2021-10-28 09:59:16,686 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2021-10-28 09:59:16,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2021-10-28 09:59:16,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 440. [2021-10-28 09:59:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 324 states have (on average 1.2901234567901234) internal successors, (418), 334 states have internal predecessors, (418), 78 states have call successors, (78), 32 states have call predecessors, (78), 37 states have return successors, (114), 74 states have call predecessors, (114), 73 states have call successors, (114) [2021-10-28 09:59:16,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 610 transitions. [2021-10-28 09:59:16,704 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 610 transitions. Word has length 108 [2021-10-28 09:59:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:16,704 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 610 transitions. [2021-10-28 09:59:16,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 11 states have internal predecessors, (78), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-10-28 09:59:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 610 transitions. [2021-10-28 09:59:16,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-10-28 09:59:16,707 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:16,707 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:16,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-28 09:59:16,708 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:16,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:16,708 INFO L85 PathProgramCache]: Analyzing trace with hash 986627049, now seen corresponding path program 1 times [2021-10-28 09:59:16,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:16,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952665317] [2021-10-28 09:59:16,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:16,709 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:16,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:16,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:16,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:16,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:16,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-28 09:59:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:17,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 09:59:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:17,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:17,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:17,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:17,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:17,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:17,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-10-28 09:59:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:17,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-10-28 09:59:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:17,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:17,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:17,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-10-28 09:59:17,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:17,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:17,406 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952665317] [2021-10-28 09:59:17,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952665317] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:17,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:17,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-10-28 09:59:17,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629378641] [2021-10-28 09:59:17,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-28 09:59:17,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:17,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-28 09:59:17,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:59:17,409 INFO L87 Difference]: Start difference. First operand 440 states and 610 transitions. Second operand has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-10-28 09:59:18,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:18,983 INFO L93 Difference]: Finished difference Result 480 states and 674 transitions. [2021-10-28 09:59:18,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-28 09:59:18,984 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) Word has length 109 [2021-10-28 09:59:18,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:18,988 INFO L225 Difference]: With dead ends: 480 [2021-10-28 09:59:18,989 INFO L226 Difference]: Without dead ends: 443 [2021-10-28 09:59:18,989 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=144, Invalid=1116, Unknown=0, NotChecked=0, Total=1260 [2021-10-28 09:59:18,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-10-28 09:59:19,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 413. [2021-10-28 09:59:19,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 304 states have (on average 1.2664473684210527) internal successors, (385), 312 states have internal predecessors, (385), 75 states have call successors, (75), 32 states have call predecessors, (75), 33 states have return successors, (97), 69 states have call predecessors, (97), 70 states have call successors, (97) [2021-10-28 09:59:19,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 557 transitions. [2021-10-28 09:59:19,006 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 557 transitions. Word has length 109 [2021-10-28 09:59:19,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:19,007 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 557 transitions. [2021-10-28 09:59:19,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.16) internal successors, (79), 11 states have internal predecessors, (79), 3 states have call successors, (16), 12 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 2 states have call successors, (14) [2021-10-28 09:59:19,008 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 557 transitions. [2021-10-28 09:59:19,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-10-28 09:59:19,010 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:19,011 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:19,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-28 09:59:19,011 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:19,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:19,012 INFO L85 PathProgramCache]: Analyzing trace with hash 358552163, now seen corresponding path program 1 times [2021-10-28 09:59:19,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:19,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049954089] [2021-10-28 09:59:19,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:19,013 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-10-28 09:59:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:19,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-10-28 09:59:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-10-28 09:59:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:19,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:59:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-28 09:59:19,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:19,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049954089] [2021-10-28 09:59:19,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049954089] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:19,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:19,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-28 09:59:19,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913158416] [2021-10-28 09:59:19,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:59:19,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:19,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:59:19,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:59:19,432 INFO L87 Difference]: Start difference. First operand 413 states and 557 transitions. Second operand has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-10-28 09:59:20,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:20,377 INFO L93 Difference]: Finished difference Result 420 states and 559 transitions. [2021-10-28 09:59:20,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:59:20,377 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 121 [2021-10-28 09:59:20,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:20,380 INFO L225 Difference]: With dead ends: 420 [2021-10-28 09:59:20,380 INFO L226 Difference]: Without dead ends: 420 [2021-10-28 09:59:20,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:59:20,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-10-28 09:59:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 408. [2021-10-28 09:59:20,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 302 states have (on average 1.2483443708609272) internal successors, (377), 309 states have internal predecessors, (377), 71 states have call successors, (71), 32 states have call predecessors, (71), 34 states have return successors, (92), 67 states have call predecessors, (92), 66 states have call successors, (92) [2021-10-28 09:59:20,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 540 transitions. [2021-10-28 09:59:20,410 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 540 transitions. Word has length 121 [2021-10-28 09:59:20,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:20,411 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 540 transitions. [2021-10-28 09:59:20,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.8) internal successors, (72), 5 states have internal predecessors, (72), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-10-28 09:59:20,411 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 540 transitions. [2021-10-28 09:59:20,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-10-28 09:59:20,414 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:20,414 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:20,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-28 09:59:20,415 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:20,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:20,416 INFO L85 PathProgramCache]: Analyzing trace with hash -618619876, now seen corresponding path program 1 times [2021-10-28 09:59:20,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:20,416 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285137374] [2021-10-28 09:59:20,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:20,417 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-10-28 09:59:20,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:20,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-10-28 09:59:20,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-10-28 09:59:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:59:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:20,844 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-10-28 09:59:20,845 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:20,845 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285137374] [2021-10-28 09:59:20,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285137374] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:20,845 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:20,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-28 09:59:20,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643851660] [2021-10-28 09:59:20,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:59:20,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:20,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:59:20,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:59:20,848 INFO L87 Difference]: Start difference. First operand 408 states and 540 transitions. Second operand has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-10-28 09:59:21,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:21,712 INFO L93 Difference]: Finished difference Result 547 states and 788 transitions. [2021-10-28 09:59:21,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:59:21,713 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2021-10-28 09:59:21,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:21,718 INFO L225 Difference]: With dead ends: 547 [2021-10-28 09:59:21,718 INFO L226 Difference]: Without dead ends: 547 [2021-10-28 09:59:21,719 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:59:21,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2021-10-28 09:59:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 399. [2021-10-28 09:59:21,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 294 states have (on average 1.248299319727891) internal successors, (367), 301 states have internal predecessors, (367), 71 states have call successors, (71), 32 states have call predecessors, (71), 33 states have return successors, (91), 66 states have call predecessors, (91), 66 states have call successors, (91) [2021-10-28 09:59:21,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 529 transitions. [2021-10-28 09:59:21,738 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 529 transitions. Word has length 122 [2021-10-28 09:59:21,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:21,740 INFO L470 AbstractCegarLoop]: Abstraction has 399 states and 529 transitions. [2021-10-28 09:59:21,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.866666666666666) internal successors, (73), 5 states have internal predecessors, (73), 2 states have call successors, (17), 11 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 1 states have call successors, (12) [2021-10-28 09:59:21,741 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 529 transitions. [2021-10-28 09:59:21,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-28 09:59:21,743 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:21,743 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:21,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-28 09:59:21,744 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:21,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:21,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1613788965, now seen corresponding path program 1 times [2021-10-28 09:59:21,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:21,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871676392] [2021-10-28 09:59:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:21,747 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:21,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:21,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:21,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:22,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-28 09:59:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:22,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 09:59:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:22,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:22,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:22,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:22,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:22,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:22,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:22,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-10-28 09:59:22,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:22,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-10-28 09:59:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:22,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-10-28 09:59:22,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:22,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:22,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-10-28 09:59:22,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:22,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:22,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871676392] [2021-10-28 09:59:22,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871676392] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:22,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:22,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-10-28 09:59:22,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108580609] [2021-10-28 09:59:22,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-28 09:59:22,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:22,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-28 09:59:22,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:59:22,488 INFO L87 Difference]: Start difference. First operand 399 states and 529 transitions. Second operand has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 09:59:25,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:25,442 INFO L93 Difference]: Finished difference Result 800 states and 1072 transitions. [2021-10-28 09:59:25,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-28 09:59:25,443 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 119 [2021-10-28 09:59:25,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:25,448 INFO L225 Difference]: With dead ends: 800 [2021-10-28 09:59:25,448 INFO L226 Difference]: Without dead ends: 743 [2021-10-28 09:59:25,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 617 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=377, Invalid=2929, Unknown=0, NotChecked=0, Total=3306 [2021-10-28 09:59:25,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2021-10-28 09:59:25,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 724. [2021-10-28 09:59:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 536 states have (on average 1.2182835820895523) internal successors, (653), 547 states have internal predecessors, (653), 130 states have call successors, (130), 57 states have call predecessors, (130), 57 states have return successors, (166), 120 states have call predecessors, (166), 122 states have call successors, (166) [2021-10-28 09:59:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 949 transitions. [2021-10-28 09:59:25,477 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 949 transitions. Word has length 119 [2021-10-28 09:59:25,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:25,478 INFO L470 AbstractCegarLoop]: Abstraction has 724 states and 949 transitions. [2021-10-28 09:59:25,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 09:59:25,479 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 949 transitions. [2021-10-28 09:59:25,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-10-28 09:59:25,481 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:25,482 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:25,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-28 09:59:25,482 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:25,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:25,483 INFO L85 PathProgramCache]: Analyzing trace with hash 708012953, now seen corresponding path program 1 times [2021-10-28 09:59:25,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:25,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279917744] [2021-10-28 09:59:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:25,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:25,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:25,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:25,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:25,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:25,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-10-28 09:59:25,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:25,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-10-28 09:59:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:25,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:26,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:26,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:26,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:26,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-10-28 09:59:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:26,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-10-28 09:59:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:26,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-10-28 09:59:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:26,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:26,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-10-28 09:59:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:26,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 09:59:26,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:26,188 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279917744] [2021-10-28 09:59:26,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279917744] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:26,188 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:26,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2021-10-28 09:59:26,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828876643] [2021-10-28 09:59:26,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-10-28 09:59:26,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:26,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-10-28 09:59:26,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2021-10-28 09:59:26,192 INFO L87 Difference]: Start difference. First operand 724 states and 949 transitions. Second operand has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 09:59:29,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:29,527 INFO L93 Difference]: Finished difference Result 741 states and 977 transitions. [2021-10-28 09:59:29,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-10-28 09:59:29,528 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 119 [2021-10-28 09:59:29,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:29,532 INFO L225 Difference]: With dead ends: 741 [2021-10-28 09:59:29,533 INFO L226 Difference]: Without dead ends: 684 [2021-10-28 09:59:29,534 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=341, Invalid=2209, Unknown=0, NotChecked=0, Total=2550 [2021-10-28 09:59:29,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2021-10-28 09:59:29,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 341. [2021-10-28 09:59:29,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 250 states have (on average 1.18) internal successors, (295), 255 states have internal predecessors, (295), 64 states have call successors, (64), 29 states have call predecessors, (64), 26 states have return successors, (77), 56 states have call predecessors, (77), 58 states have call successors, (77) [2021-10-28 09:59:29,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 436 transitions. [2021-10-28 09:59:29,551 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 436 transitions. Word has length 119 [2021-10-28 09:59:29,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:29,552 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 436 transitions. [2021-10-28 09:59:29,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.48) internal successors, (87), 11 states have internal predecessors, (87), 5 states have call successors, (17), 13 states have call predecessors, (17), 4 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2021-10-28 09:59:29,553 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 436 transitions. [2021-10-28 09:59:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-10-28 09:59:29,556 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:29,556 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:29,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-28 09:59:29,557 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:29,558 INFO L85 PathProgramCache]: Analyzing trace with hash -292170069, now seen corresponding path program 1 times [2021-10-28 09:59:29,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:29,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810639622] [2021-10-28 09:59:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:29,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-10-28 09:59:29,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:29,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-10-28 09:59:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-10-28 09:59:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:59:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-10-28 09:59:29,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-10-28 09:59:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:29,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:30,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:30,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:30,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:30,009 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-28 09:59:30,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:30,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810639622] [2021-10-28 09:59:30,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810639622] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 09:59:30,010 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37423905] [2021-10-28 09:59:30,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:30,011 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 09:59:30,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 09:59:30,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 09:59:30,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 09:59:30,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:30,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 1359 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 09:59:30,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 09:59:31,021 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-10-28 09:59:31,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37423905] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:31,022 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-28 09:59:31,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 15 [2021-10-28 09:59:31,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830293419] [2021-10-28 09:59:31,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-28 09:59:31,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:31,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-28 09:59:31,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:59:31,025 INFO L87 Difference]: Start difference. First operand 341 states and 436 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-10-28 09:59:31,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:31,098 INFO L93 Difference]: Finished difference Result 374 states and 483 transitions. [2021-10-28 09:59:31,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 09:59:31,099 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 163 [2021-10-28 09:59:31,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:31,102 INFO L225 Difference]: With dead ends: 374 [2021-10-28 09:59:31,102 INFO L226 Difference]: Without dead ends: 372 [2021-10-28 09:59:31,103 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-28 09:59:31,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-28 09:59:31,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 361. [2021-10-28 09:59:31,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 268 states have (on average 1.1679104477611941) internal successors, (313), 273 states have internal predecessors, (313), 64 states have call successors, (64), 29 states have call predecessors, (64), 28 states have return successors, (88), 58 states have call predecessors, (88), 58 states have call successors, (88) [2021-10-28 09:59:31,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 465 transitions. [2021-10-28 09:59:31,123 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 465 transitions. Word has length 163 [2021-10-28 09:59:31,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:31,124 INFO L470 AbstractCegarLoop]: Abstraction has 361 states and 465 transitions. [2021-10-28 09:59:31,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-10-28 09:59:31,124 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 465 transitions. [2021-10-28 09:59:31,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-10-28 09:59:31,128 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:31,128 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:31,182 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 09:59:31,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-10-28 09:59:31,358 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:31,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:31,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1488612663, now seen corresponding path program 1 times [2021-10-28 09:59:31,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:31,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383697120] [2021-10-28 09:59:31,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:31,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:31,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-10-28 09:59:31,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:31,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-10-28 09:59:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-10-28 09:59:31,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:59:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:31,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-10-28 09:59:31,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-10-28 09:59:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-10-28 09:59:31,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:31,867 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383697120] [2021-10-28 09:59:31,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383697120] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:31,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:31,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-28 09:59:31,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180875662] [2021-10-28 09:59:31,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:59:31,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:31,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:59:31,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:59:31,871 INFO L87 Difference]: Start difference. First operand 361 states and 465 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (19), 11 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-10-28 09:59:32,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:32,893 INFO L93 Difference]: Finished difference Result 388 states and 505 transitions. [2021-10-28 09:59:32,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:59:32,893 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (19), 11 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) Word has length 164 [2021-10-28 09:59:32,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:32,896 INFO L225 Difference]: With dead ends: 388 [2021-10-28 09:59:32,897 INFO L226 Difference]: Without dead ends: 388 [2021-10-28 09:59:32,897 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:59:32,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-10-28 09:59:32,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 363. [2021-10-28 09:59:32,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 270 states have (on average 1.1666666666666667) internal successors, (315), 275 states have internal predecessors, (315), 64 states have call successors, (64), 29 states have call predecessors, (64), 28 states have return successors, (88), 58 states have call predecessors, (88), 58 states have call successors, (88) [2021-10-28 09:59:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 467 transitions. [2021-10-28 09:59:32,909 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 467 transitions. Word has length 164 [2021-10-28 09:59:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:32,910 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 467 transitions. [2021-10-28 09:59:32,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (19), 11 states have call predecessors, (19), 3 states have return successors, (14), 3 states have call predecessors, (14), 1 states have call successors, (14) [2021-10-28 09:59:32,911 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 467 transitions. [2021-10-28 09:59:32,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-10-28 09:59:32,914 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:32,915 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:32,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-28 09:59:32,915 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:32,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1456464136, now seen corresponding path program 1 times [2021-10-28 09:59:32,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:32,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75147458] [2021-10-28 09:59:32,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:32,917 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:33,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-10-28 09:59:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:33,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:33,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-10-28 09:59:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-10-28 09:59:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:59:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:33,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-10-28 09:59:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-10-28 09:59:33,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:33,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-10-28 09:59:33,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:33,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75147458] [2021-10-28 09:59:33,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75147458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:33,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:33,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-10-28 09:59:33,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504852584] [2021-10-28 09:59:33,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-28 09:59:33,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:33,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-28 09:59:33,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2021-10-28 09:59:33,349 INFO L87 Difference]: Start difference. First operand 363 states and 467 transitions. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 11 states have call predecessors, (19), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-10-28 09:59:33,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:33,765 INFO L93 Difference]: Finished difference Result 369 states and 477 transitions. [2021-10-28 09:59:33,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 09:59:33,766 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 11 states have call predecessors, (19), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 164 [2021-10-28 09:59:33,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:33,768 INFO L225 Difference]: With dead ends: 369 [2021-10-28 09:59:33,768 INFO L226 Difference]: Without dead ends: 369 [2021-10-28 09:59:33,768 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2021-10-28 09:59:33,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2021-10-28 09:59:33,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 363. [2021-10-28 09:59:33,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 270 states have (on average 1.1592592592592592) internal successors, (313), 275 states have internal predecessors, (313), 64 states have call successors, (64), 29 states have call predecessors, (64), 28 states have return successors, (88), 58 states have call predecessors, (88), 58 states have call successors, (88) [2021-10-28 09:59:33,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 465 transitions. [2021-10-28 09:59:33,780 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 465 transitions. Word has length 164 [2021-10-28 09:59:33,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:33,781 INFO L470 AbstractCegarLoop]: Abstraction has 363 states and 465 transitions. [2021-10-28 09:59:33,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 3 states have internal predecessors, (77), 3 states have call successors, (19), 11 states have call predecessors, (19), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-10-28 09:59:33,782 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 465 transitions. [2021-10-28 09:59:33,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-10-28 09:59:33,786 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:33,786 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:33,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-10-28 09:59:33,787 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:33,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:33,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1734693448, now seen corresponding path program 1 times [2021-10-28 09:59:33,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:33,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363318907] [2021-10-28 09:59:33,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:33,788 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:33,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:33,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-10-28 09:59:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:34,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:34,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:34,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-10-28 09:59:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-10-28 09:59:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:59:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:34,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-10-28 09:59:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-10-28 09:59:34,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-10-28 09:59:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-10-28 09:59:34,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:34,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363318907] [2021-10-28 09:59:34,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363318907] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:34,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:34,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-28 09:59:34,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572609774] [2021-10-28 09:59:34,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:59:34,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:34,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:59:34,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:59:34,303 INFO L87 Difference]: Start difference. First operand 363 states and 465 transitions. Second operand has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (20), 11 states have call predecessors, (20), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-10-28 09:59:35,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:35,023 INFO L93 Difference]: Finished difference Result 428 states and 566 transitions. [2021-10-28 09:59:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:59:35,024 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (20), 11 states have call predecessors, (20), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 172 [2021-10-28 09:59:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:35,027 INFO L225 Difference]: With dead ends: 428 [2021-10-28 09:59:35,027 INFO L226 Difference]: Without dead ends: 428 [2021-10-28 09:59:35,028 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:59:35,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2021-10-28 09:59:35,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 345. [2021-10-28 09:59:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 256 states have (on average 1.14453125) internal successors, (293), 260 states have internal predecessors, (293), 60 states have call successors, (60), 29 states have call predecessors, (60), 28 states have return successors, (80), 55 states have call predecessors, (80), 54 states have call successors, (80) [2021-10-28 09:59:35,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 433 transitions. [2021-10-28 09:59:35,042 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 433 transitions. Word has length 172 [2021-10-28 09:59:35,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:35,042 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 433 transitions. [2021-10-28 09:59:35,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.533333333333333) internal successors, (83), 5 states have internal predecessors, (83), 2 states have call successors, (20), 11 states have call predecessors, (20), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-10-28 09:59:35,044 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 433 transitions. [2021-10-28 09:59:35,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-10-28 09:59:35,049 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:35,049 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:35,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-10-28 09:59:35,050 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:35,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:35,050 INFO L85 PathProgramCache]: Analyzing trace with hash 405901981, now seen corresponding path program 1 times [2021-10-28 09:59:35,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:35,051 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389315433] [2021-10-28 09:59:35,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:35,051 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:35,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-10-28 09:59:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-10-28 09:59:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-10-28 09:59:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:59:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:35,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-10-28 09:59:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-10-28 09:59:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:35,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-10-28 09:59:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-10-28 09:59:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:35,568 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-10-28 09:59:35,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:35,569 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389315433] [2021-10-28 09:59:35,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389315433] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:35,569 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:35,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-28 09:59:35,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464073433] [2021-10-28 09:59:35,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:59:35,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:35,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:59:35,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:59:35,573 INFO L87 Difference]: Start difference. First operand 345 states and 433 transitions. Second operand has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2021-10-28 09:59:36,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:36,299 INFO L93 Difference]: Finished difference Result 354 states and 451 transitions. [2021-10-28 09:59:36,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:59:36,300 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 204 [2021-10-28 09:59:36,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:36,317 INFO L225 Difference]: With dead ends: 354 [2021-10-28 09:59:36,317 INFO L226 Difference]: Without dead ends: 354 [2021-10-28 09:59:36,318 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:59:36,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-10-28 09:59:36,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 309. [2021-10-28 09:59:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 231 states have (on average 1.1255411255411256) internal successors, (260), 234 states have internal predecessors, (260), 52 states have call successors, (52), 24 states have call predecessors, (52), 25 states have return successors, (73), 50 states have call predecessors, (73), 47 states have call successors, (73) [2021-10-28 09:59:36,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 385 transitions. [2021-10-28 09:59:36,328 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 385 transitions. Word has length 204 [2021-10-28 09:59:36,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:36,328 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 385 transitions. [2021-10-28 09:59:36,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.733333333333333) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2021-10-28 09:59:36,329 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 385 transitions. [2021-10-28 09:59:36,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-10-28 09:59:36,333 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 09:59:36,334 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:36,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-10-28 09:59:36,334 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [mainErr0ENSURES_VIOLATIONMEMORY_LEAK, errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-10-28 09:59:36,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 09:59:36,335 INFO L85 PathProgramCache]: Analyzing trace with hash 2083081796, now seen corresponding path program 1 times [2021-10-28 09:59:36,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 09:59:36,335 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777778494] [2021-10-28 09:59:36,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 09:59:36,336 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 09:59:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-10-28 09:59:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-10-28 09:59:36,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-10-28 09:59:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-10-28 09:59:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-10-28 09:59:36,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:36,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-10-28 09:59:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-10-28 09:59:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:36,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-10-28 09:59:36,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:36,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-10-28 09:59:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-10-28 09:59:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:36,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:36,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-10-28 09:59:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-10-28 09:59:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-10-28 09:59:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-10-28 09:59:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-10-28 09:59:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 09:59:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2021-10-28 09:59:36,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 09:59:36,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777778494] [2021-10-28 09:59:36,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777778494] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 09:59:36,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 09:59:36,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-10-28 09:59:36,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053596702] [2021-10-28 09:59:36,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-28 09:59:36,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 09:59:36,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-28 09:59:36,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2021-10-28 09:59:36,858 INFO L87 Difference]: Start difference. First operand 309 states and 385 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2021-10-28 09:59:37,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 09:59:37,885 INFO L93 Difference]: Finished difference Result 290 states and 362 transitions. [2021-10-28 09:59:37,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-28 09:59:37,886 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 207 [2021-10-28 09:59:37,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 09:59:37,888 INFO L225 Difference]: With dead ends: 290 [2021-10-28 09:59:37,888 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 09:59:37,888 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2021-10-28 09:59:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 09:59:37,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 09:59:37,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 09:59:37,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 09:59:37,889 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 207 [2021-10-28 09:59:37,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 09:59:37,890 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 09:59:37,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (21), 11 states have call predecessors, (21), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2021-10-28 09:59:37,890 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 09:59:37,890 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 09:59:37,894 INFO L764 garLoopResultBuilder]: Registering result SAFE for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-10-28 09:59:37,897 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK [2021-10-28 09:59:37,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-10-28 09:59:37,903 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 09:59:37,907 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 09:59:37,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 09:59:37 BoogieIcfgContainer [2021-10-28 09:59:37,913 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 09:59:37,914 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 09:59:37,914 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 09:59:37,914 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 09:59:37,915 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:58:04" (3/4) ... [2021-10-28 09:59:37,921 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 09:59:37,932 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure reach_error [2021-10-28 09:59:37,932 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure _BLAST_init [2021-10-28 09:59:37,933 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2021-10-28 09:59:37,933 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfSyncFilterWithTarget [2021-10-28 09:59:37,933 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stubMoreProcessingRequired [2021-10-28 09:59:37,933 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure PoCallDriver [2021-10-28 09:59:37,933 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfDispatchPower [2021-10-28 09:59:37,934 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2021-10-28 09:59:37,934 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-10-28 09:59:37,934 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoBuildDeviceIoControlRequest [2021-10-28 09:59:37,934 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeSetEvent [2021-10-28 09:59:37,934 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure stub_driver_init [2021-10-28 09:59:37,934 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfSendToNextDriver [2021-10-28 09:59:37,935 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfStartDevice [2021-10-28 09:59:37,935 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfForwardIrpSynchronous [2021-10-28 09:59:37,935 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfRegisterDevice [2021-10-28 09:59:37,935 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfDeviceControl [2021-10-28 09:59:37,935 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-10-28 09:59:37,935 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfRemoveDevice [2021-10-28 09:59:37,936 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfCreate [2021-10-28 09:59:37,936 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfUnload [2021-10-28 09:59:37,936 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfIrpCompletion [2021-10-28 09:59:37,936 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-10-28 09:59:37,936 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfIoCompletion [2021-10-28 09:59:37,937 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfDispatchPnp [2021-10-28 09:59:37,937 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2021-10-28 09:59:37,937 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure DiskPerfShutdownFlush [2021-10-28 09:59:37,981 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2021-10-28 09:59:37,984 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2021-10-28 09:59:37,987 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 09:59:37,990 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 09:59:38,223 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 09:59:38,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 09:59:38,225 INFO L168 Benchmark]: Toolchain (without parser) took 96154.66 ms. Allocated memory was 125.8 MB in the beginning and 283.1 MB in the end (delta: 157.3 MB). Free memory was 98.8 MB in the beginning and 91.3 MB in the end (delta: 7.5 MB). Peak memory consumption was 163.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:59:38,226 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 125.8 MB. Free memory is still 82.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 09:59:38,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 704.40 ms. Allocated memory is still 125.8 MB. Free memory was 98.8 MB in the beginning and 90.3 MB in the end (delta: 8.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 09:59:38,227 INFO L168 Benchmark]: Boogie Preprocessor took 108.53 ms. Allocated memory is still 125.8 MB. Free memory was 90.3 MB in the beginning and 86.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 09:59:38,227 INFO L168 Benchmark]: RCFGBuilder took 1378.95 ms. Allocated memory was 125.8 MB in the beginning and 161.5 MB in the end (delta: 35.7 MB). Free memory was 86.9 MB in the beginning and 126.1 MB in the end (delta: -39.2 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. [2021-10-28 09:59:38,228 INFO L168 Benchmark]: TraceAbstraction took 93645.68 ms. Allocated memory was 161.5 MB in the beginning and 283.1 MB in the end (delta: 121.6 MB). Free memory was 125.2 MB in the beginning and 111.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 136.3 MB. Max. memory is 16.1 GB. [2021-10-28 09:59:38,228 INFO L168 Benchmark]: Witness Printer took 310.16 ms. Allocated memory is still 283.1 MB. Free memory was 111.2 MB in the beginning and 91.3 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-28 09:59:38,230 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 125.8 MB. Free memory is still 82.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 704.40 ms. Allocated memory is still 125.8 MB. Free memory was 98.8 MB in the beginning and 90.3 MB in the end (delta: 8.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 108.53 ms. Allocated memory is still 125.8 MB. Free memory was 90.3 MB in the beginning and 86.9 MB in the end (delta: 3.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1378.95 ms. Allocated memory was 125.8 MB in the beginning and 161.5 MB in the end (delta: 35.7 MB). Free memory was 86.9 MB in the beginning and 126.1 MB in the end (delta: -39.2 MB). Peak memory consumption was 43.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 93645.68 ms. Allocated memory was 161.5 MB in the beginning and 283.1 MB in the end (delta: 121.6 MB). Free memory was 125.2 MB in the beginning and 111.2 MB in the end (delta: 14.0 MB). Peak memory consumption was 136.3 MB. Max. memory is 16.1 GB. * Witness Printer took 310.16 ms. Allocated memory is still 283.1 MB. Free memory was 111.2 MB in the beginning and 91.3 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 647]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 56]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 28 procedures, 299 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 93.5s, OverallIterations: 51, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 69.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 14077 SDtfs, 15533 SDslu, 43568 SDs, 0 SdLazy, 55785 SolverSat, 7497 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 48.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1756 GetRequests, 927 SyntacticMatches, 0 SemanticMatches, 829 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2875 ImplicationChecksByTransitivity, 21.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1085occurred in iteration=8, InterpolantAutomatonStates: 656, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.5s AutomataMinimizationTime, 51 MinimizatonAttempts, 2877 StatesRemovedByMinimization, 49 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 19.4s InterpolantComputationTime, 4057 NumberOfCodeBlocks, 4057 NumberOfCodeBlocksAsserted, 52 NumberOfCheckSat, 4005 ConstructedInterpolants, 0 QuantifiedInterpolants, 17077 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1359 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 52 InterpolantComputations, 51 PerfectInterpolantSequences, 851/857 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 09:59:38,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_be2d4b23-dc59-412d-8b1f-871f573e37b8/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...