./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 06:07:36,735 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 06:07:36,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 06:07:36,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 06:07:36,785 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 06:07:36,786 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 06:07:36,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 06:07:36,792 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 06:07:36,794 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 06:07:36,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 06:07:36,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 06:07:36,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 06:07:36,800 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 06:07:36,801 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 06:07:36,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 06:07:36,803 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 06:07:36,803 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 06:07:36,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 06:07:36,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 06:07:36,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 06:07:36,808 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 06:07:36,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 06:07:36,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 06:07:36,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 06:07:36,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 06:07:36,814 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 06:07:36,815 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 06:07:36,816 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 06:07:36,816 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 06:07:36,817 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 06:07:36,817 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 06:07:36,818 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 06:07:36,818 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 06:07:36,819 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 06:07:36,820 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 06:07:36,820 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 06:07:36,821 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 06:07:36,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 06:07:36,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 06:07:36,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 06:07:36,823 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 06:07:36,824 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-16 06:07:36,844 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 06:07:36,846 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 06:07:36,847 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 06:07:36,848 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 06:07:36,848 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 06:07:36,849 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 06:07:36,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 06:07:36,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 06:07:36,849 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 06:07:36,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 06:07:36,850 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 06:07:36,851 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 06:07:36,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 06:07:36,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 06:07:36,851 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 06:07:36,852 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-16 06:07:36,852 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-16 06:07:36,852 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-16 06:07:36,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 06:07:36,852 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-16 06:07:36,853 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 06:07:36,853 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 06:07:36,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 06:07:36,853 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 06:07:36,853 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 06:07:36,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:07:36,854 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 06:07:36,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 06:07:36,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 06:07:36,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 06:07:36,855 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 06:07:36,856 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fa38cbba4031a56736a5ec3c724b1da0a42c893b0e9010b5807defb3e1b19fa [2021-12-16 06:07:37,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 06:07:37,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 06:07:37,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 06:07:37,095 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 06:07:37,096 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 06:07:37,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-12-16 06:07:37,160 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cda8e3382/5919f64d00744864b3a85bc7ca2c8051/FLAG867769b33 [2021-12-16 06:07:37,605 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 06:07:37,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c [2021-12-16 06:07:37,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cda8e3382/5919f64d00744864b3a85bc7ca2c8051/FLAG867769b33 [2021-12-16 06:07:37,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cda8e3382/5919f64d00744864b3a85bc7ca2c8051 [2021-12-16 06:07:37,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 06:07:37,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 06:07:37,642 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:37,642 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 06:07:37,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 06:07:37,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:37" (1/1) ... [2021-12-16 06:07:37,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@104949cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:37, skipping insertion in model container [2021-12-16 06:07:37,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:07:37" (1/1) ... [2021-12-16 06:07:37,652 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 06:07:37,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 06:07:37,842 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c[2713,2726] [2021-12-16 06:07:37,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:37,944 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 06:07:37,956 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl3.cil-2.c[2713,2726] [2021-12-16 06:07:38,018 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 06:07:38,031 INFO L208 MainTranslator]: Completed translation [2021-12-16 06:07:38,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:38 WrapperNode [2021-12-16 06:07:38,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 06:07:38,033 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 06:07:38,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 06:07:38,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 06:07:38,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:38" (1/1) ... [2021-12-16 06:07:38,058 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:38" (1/1) ... [2021-12-16 06:07:38,107 INFO L137 Inliner]: procedures = 38, calls = 62, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 916 [2021-12-16 06:07:38,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 06:07:38,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 06:07:38,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 06:07:38,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 06:07:38,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:38" (1/1) ... [2021-12-16 06:07:38,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:38" (1/1) ... [2021-12-16 06:07:38,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:38" (1/1) ... [2021-12-16 06:07:38,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:38" (1/1) ... [2021-12-16 06:07:38,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:38" (1/1) ... [2021-12-16 06:07:38,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:38" (1/1) ... [2021-12-16 06:07:38,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:38" (1/1) ... [2021-12-16 06:07:38,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 06:07:38,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 06:07:38,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 06:07:38,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 06:07:38,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:38" (1/1) ... [2021-12-16 06:07:38,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 06:07:38,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 06:07:38,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 06:07:38,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 06:07:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 06:07:38,222 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2021-12-16 06:07:38,222 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2021-12-16 06:07:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure KeWaitForSingleObject [2021-12-16 06:07:38,223 INFO L138 BoogieDeclarations]: Found implementation of procedure KeWaitForSingleObject [2021-12-16 06:07:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure IofCompleteRequest [2021-12-16 06:07:38,223 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCompleteRequest [2021-12-16 06:07:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2021-12-16 06:07:38,223 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2021-12-16 06:07:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 06:07:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2021-12-16 06:07:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2021-12-16 06:07:38,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 06:07:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 06:07:38,416 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 06:07:38,418 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 06:07:38,425 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:38,486 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume !false; [2021-12-16 06:07:38,486 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume false; [2021-12-16 06:07:38,487 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:38,494 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2021-12-16 06:07:38,494 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2021-12-16 06:07:38,504 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:38,508 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:38,512 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:38,516 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:38,517 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:38,520 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:38,524 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:38,524 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:38,528 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:38,884 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##86: assume !false; [2021-12-16 06:07:38,887 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume false; [2021-12-16 06:07:38,887 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##171: assume !false; [2021-12-16 06:07:38,888 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##170: assume false; [2021-12-16 06:07:38,888 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2021-12-16 06:07:38,888 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2021-12-16 06:07:38,888 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !false; [2021-12-16 06:07:38,888 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume false; [2021-12-16 06:07:38,888 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##32: assume !false; [2021-12-16 06:07:38,889 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume false; [2021-12-16 06:07:38,889 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume false; [2021-12-16 06:07:38,889 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !false; [2021-12-16 06:07:38,889 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##109: assume false; [2021-12-16 06:07:38,889 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##110: assume !false; [2021-12-16 06:07:38,890 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##119: assume !false; [2021-12-16 06:07:38,890 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##118: assume false; [2021-12-16 06:07:38,891 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##122: assume false; [2021-12-16 06:07:38,891 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##123: assume !false; [2021-12-16 06:07:38,892 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-16 06:07:38,917 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##15: assume !false; [2021-12-16 06:07:38,917 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##14: assume false; [2021-12-16 06:07:38,922 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 06:07:38,932 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 06:07:38,934 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 06:07:38,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:38 BoogieIcfgContainer [2021-12-16 06:07:38,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 06:07:38,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 06:07:38,938 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 06:07:38,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 06:07:38,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:07:37" (1/3) ... [2021-12-16 06:07:38,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361a49a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:38, skipping insertion in model container [2021-12-16 06:07:38,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:07:38" (2/3) ... [2021-12-16 06:07:38,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@361a49a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:07:38, skipping insertion in model container [2021-12-16 06:07:38,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:38" (3/3) ... [2021-12-16 06:07:38,944 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl3.cil-2.c [2021-12-16 06:07:38,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 06:07:38,949 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-16 06:07:38,981 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 06:07:38,989 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 [2021-12-16 06:07:38,989 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-16 06:07:39,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 193 states have (on average 1.4870466321243523) internal successors, (287), 215 states have internal predecessors, (287), 37 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-16 06:07:39,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 06:07:39,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:39,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:39,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:39,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:39,027 INFO L85 PathProgramCache]: Analyzing trace with hash -379437591, now seen corresponding path program 1 times [2021-12-16 06:07:39,035 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:39,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251482502] [2021-12-16 06:07:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:39,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:39,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:39,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:39,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251482502] [2021-12-16 06:07:39,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251482502] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:39,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:39,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:39,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843020661] [2021-12-16 06:07:39,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:39,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:39,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:39,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:39,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:39,246 INFO L87 Difference]: Start difference. First operand has 238 states, 193 states have (on average 1.4870466321243523) internal successors, (287), 215 states have internal predecessors, (287), 37 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (37), 32 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:39,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:39,341 INFO L93 Difference]: Finished difference Result 237 states and 338 transitions. [2021-12-16 06:07:39,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:39,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-16 06:07:39,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:39,365 INFO L225 Difference]: With dead ends: 237 [2021-12-16 06:07:39,365 INFO L226 Difference]: Without dead ends: 235 [2021-12-16 06:07:39,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:39,371 INFO L933 BasicCegarLoop]: 336 mSDtfsCounter, 194 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:39,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 448 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:39,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2021-12-16 06:07:39,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 234. [2021-12-16 06:07:39,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 191 states have (on average 1.4607329842931938) internal successors, (279), 211 states have internal predecessors, (279), 37 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-16 06:07:39,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 335 transitions. [2021-12-16 06:07:39,444 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 335 transitions. Word has length 8 [2021-12-16 06:07:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:39,444 INFO L470 AbstractCegarLoop]: Abstraction has 234 states and 335 transitions. [2021-12-16 06:07:39,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:39,445 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 335 transitions. [2021-12-16 06:07:39,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-16 06:07:39,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:39,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:39,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 06:07:39,446 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:39,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:39,447 INFO L85 PathProgramCache]: Analyzing trace with hash 229440230, now seen corresponding path program 1 times [2021-12-16 06:07:39,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:39,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476699388] [2021-12-16 06:07:39,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:39,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:39,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:39,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:39,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476699388] [2021-12-16 06:07:39,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476699388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:39,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:39,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 06:07:39,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025644521] [2021-12-16 06:07:39,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:39,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:39,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:39,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:39,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:39,521 INFO L87 Difference]: Start difference. First operand 234 states and 335 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:39,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:39,586 INFO L93 Difference]: Finished difference Result 233 states and 334 transitions. [2021-12-16 06:07:39,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:39,586 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-16 06:07:39,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:39,588 INFO L225 Difference]: With dead ends: 233 [2021-12-16 06:07:39,588 INFO L226 Difference]: Without dead ends: 229 [2021-12-16 06:07:39,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:39,594 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 214 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:39,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [233 Valid, 392 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:39,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-16 06:07:39,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2021-12-16 06:07:39,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 187 states have (on average 1.4224598930481283) internal successors, (266), 206 states have internal predecessors, (266), 37 states have call successors, (37), 5 states have call predecessors, (37), 4 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2021-12-16 06:07:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 322 transitions. [2021-12-16 06:07:39,611 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 322 transitions. Word has length 11 [2021-12-16 06:07:39,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:39,612 INFO L470 AbstractCegarLoop]: Abstraction has 229 states and 322 transitions. [2021-12-16 06:07:39,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:39,612 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 322 transitions. [2021-12-16 06:07:39,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-16 06:07:39,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:39,613 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:39,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 06:07:39,613 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:39,614 INFO L85 PathProgramCache]: Analyzing trace with hash 23733269, now seen corresponding path program 1 times [2021-12-16 06:07:39,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:39,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472249560] [2021-12-16 06:07:39,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:39,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:39,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:39,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:39,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:39,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472249560] [2021-12-16 06:07:39,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472249560] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:39,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:39,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:39,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136118695] [2021-12-16 06:07:39,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:39,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:39,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:39,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:39,692 INFO L87 Difference]: Start difference. First operand 229 states and 322 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:39,793 INFO L93 Difference]: Finished difference Result 344 states and 482 transitions. [2021-12-16 06:07:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:39,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-16 06:07:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:39,796 INFO L225 Difference]: With dead ends: 344 [2021-12-16 06:07:39,797 INFO L226 Difference]: Without dead ends: 343 [2021-12-16 06:07:39,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:39,803 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 251 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:39,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [251 Valid, 583 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:39,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-16 06:07:39,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 326. [2021-12-16 06:07:39,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 281 states have (on average 1.3629893238434163) internal successors, (383), 285 states have internal predecessors, (383), 37 states have call successors, (37), 9 states have call predecessors, (37), 7 states have return successors, (40), 32 states have call predecessors, (40), 27 states have call successors, (40) [2021-12-16 06:07:39,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 460 transitions. [2021-12-16 06:07:39,831 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 460 transitions. Word has length 18 [2021-12-16 06:07:39,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:39,831 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 460 transitions. [2021-12-16 06:07:39,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:39,832 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 460 transitions. [2021-12-16 06:07:39,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 06:07:39,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:39,833 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:39,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 06:07:39,833 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:39,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:39,834 INFO L85 PathProgramCache]: Analyzing trace with hash -1035240094, now seen corresponding path program 1 times [2021-12-16 06:07:39,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:39,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050973723] [2021-12-16 06:07:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:39,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:39,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:39,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:39,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050973723] [2021-12-16 06:07:39,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050973723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:39,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:39,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:39,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689944633] [2021-12-16 06:07:39,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:39,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:39,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:39,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:39,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:39,884 INFO L87 Difference]: Start difference. First operand 326 states and 460 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:39,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:39,910 INFO L93 Difference]: Finished difference Result 512 states and 717 transitions. [2021-12-16 06:07:39,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:39,910 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-16 06:07:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:39,913 INFO L225 Difference]: With dead ends: 512 [2021-12-16 06:07:39,913 INFO L226 Difference]: Without dead ends: 512 [2021-12-16 06:07:39,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:39,915 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 273 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:39,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [273 Valid, 479 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:39,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-12-16 06:07:39,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 485. [2021-12-16 06:07:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 423 states have (on average 1.3617021276595744) internal successors, (576), 424 states have internal predecessors, (576), 47 states have call successors, (47), 17 states have call predecessors, (47), 14 states have return successors, (61), 44 states have call predecessors, (61), 39 states have call successors, (61) [2021-12-16 06:07:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 684 transitions. [2021-12-16 06:07:39,931 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 684 transitions. Word has length 19 [2021-12-16 06:07:39,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:39,932 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 684 transitions. [2021-12-16 06:07:39,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:39,932 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 684 transitions. [2021-12-16 06:07:39,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-16 06:07:39,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:39,933 INFO L514 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] [2021-12-16 06:07:39,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 06:07:39,934 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:39,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:39,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1224032788, now seen corresponding path program 1 times [2021-12-16 06:07:39,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:39,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330862866] [2021-12-16 06:07:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:39,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:39,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:39,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330862866] [2021-12-16 06:07:39,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330862866] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:39,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:39,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:39,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486847051] [2021-12-16 06:07:39,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:39,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:39,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:39,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:39,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:39,973 INFO L87 Difference]: Start difference. First operand 485 states and 684 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:39,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:39,997 INFO L93 Difference]: Finished difference Result 556 states and 772 transitions. [2021-12-16 06:07:39,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:39,998 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-16 06:07:39,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:40,002 INFO L225 Difference]: With dead ends: 556 [2021-12-16 06:07:40,003 INFO L226 Difference]: Without dead ends: 556 [2021-12-16 06:07:40,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:40,004 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 277 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:40,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [277 Valid, 384 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:40,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-12-16 06:07:40,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 523. [2021-12-16 06:07:40,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 455 states have (on average 1.3604395604395605) internal successors, (619), 462 states have internal predecessors, (619), 49 states have call successors, (49), 20 states have call predecessors, (49), 18 states have return successors, (65), 42 states have call predecessors, (65), 42 states have call successors, (65) [2021-12-16 06:07:40,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 733 transitions. [2021-12-16 06:07:40,025 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 733 transitions. Word has length 22 [2021-12-16 06:07:40,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:40,025 INFO L470 AbstractCegarLoop]: Abstraction has 523 states and 733 transitions. [2021-12-16 06:07:40,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:40,025 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 733 transitions. [2021-12-16 06:07:40,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-16 06:07:40,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:40,027 INFO L514 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] [2021-12-16 06:07:40,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 06:07:40,027 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:40,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:40,028 INFO L85 PathProgramCache]: Analyzing trace with hash -222747689, now seen corresponding path program 1 times [2021-12-16 06:07:40,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:40,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474394140] [2021-12-16 06:07:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:40,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:40,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:40,062 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:40,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474394140] [2021-12-16 06:07:40,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474394140] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:40,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:40,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:40,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018131768] [2021-12-16 06:07:40,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:40,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:40,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:40,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:40,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:40,065 INFO L87 Difference]: Start difference. First operand 523 states and 733 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:40,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:40,130 INFO L93 Difference]: Finished difference Result 803 states and 1126 transitions. [2021-12-16 06:07:40,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:40,131 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-16 06:07:40,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:40,134 INFO L225 Difference]: With dead ends: 803 [2021-12-16 06:07:40,135 INFO L226 Difference]: Without dead ends: 803 [2021-12-16 06:07:40,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:40,136 INFO L933 BasicCegarLoop]: 404 mSDtfsCounter, 120 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:40,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 662 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:40,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-12-16 06:07:40,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 614. [2021-12-16 06:07:40,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 540 states have (on average 1.3685185185185185) internal successors, (739), 550 states have internal predecessors, (739), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-16 06:07:40,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 862 transitions. [2021-12-16 06:07:40,155 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 862 transitions. Word has length 27 [2021-12-16 06:07:40,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:40,155 INFO L470 AbstractCegarLoop]: Abstraction has 614 states and 862 transitions. [2021-12-16 06:07:40,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:40,156 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 862 transitions. [2021-12-16 06:07:40,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-16 06:07:40,157 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:40,157 INFO L514 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] [2021-12-16 06:07:40,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 06:07:40,158 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:40,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:40,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1446649383, now seen corresponding path program 1 times [2021-12-16 06:07:40,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:40,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938617584] [2021-12-16 06:07:40,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:40,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:40,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:40,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938617584] [2021-12-16 06:07:40,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938617584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:40,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:40,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:40,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390197918] [2021-12-16 06:07:40,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:40,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:40,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:40,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:40,250 INFO L87 Difference]: Start difference. First operand 614 states and 862 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:40,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:40,460 INFO L93 Difference]: Finished difference Result 639 states and 882 transitions. [2021-12-16 06:07:40,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 06:07:40,461 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-16 06:07:40,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:40,464 INFO L225 Difference]: With dead ends: 639 [2021-12-16 06:07:40,464 INFO L226 Difference]: Without dead ends: 639 [2021-12-16 06:07:40,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:40,465 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 513 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:40,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 527 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:40,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 639 states. [2021-12-16 06:07:40,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 639 to 605. [2021-12-16 06:07:40,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 531 states have (on average 1.3521657250470809) internal successors, (718), 541 states have internal predecessors, (718), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-16 06:07:40,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 841 transitions. [2021-12-16 06:07:40,486 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 841 transitions. Word has length 28 [2021-12-16 06:07:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:40,488 INFO L470 AbstractCegarLoop]: Abstraction has 605 states and 841 transitions. [2021-12-16 06:07:40,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:40,488 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 841 transitions. [2021-12-16 06:07:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-16 06:07:40,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:40,491 INFO L514 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] [2021-12-16 06:07:40,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 06:07:40,491 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:40,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:40,494 INFO L85 PathProgramCache]: Analyzing trace with hash -266296252, now seen corresponding path program 1 times [2021-12-16 06:07:40,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:40,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355996995] [2021-12-16 06:07:40,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:40,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 06:07:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:40,565 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:40,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355996995] [2021-12-16 06:07:40,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355996995] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:40,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:40,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:40,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41697531] [2021-12-16 06:07:40,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:40,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:40,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:40,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:40,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:40,567 INFO L87 Difference]: Start difference. First operand 605 states and 841 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:40,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:40,706 INFO L93 Difference]: Finished difference Result 645 states and 893 transitions. [2021-12-16 06:07:40,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:40,706 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2021-12-16 06:07:40,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:40,710 INFO L225 Difference]: With dead ends: 645 [2021-12-16 06:07:40,711 INFO L226 Difference]: Without dead ends: 645 [2021-12-16 06:07:40,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:40,711 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 64 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 735 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:40,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 735 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:40,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-12-16 06:07:40,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 626. [2021-12-16 06:07:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 552 states have (on average 1.3496376811594204) internal successors, (745), 561 states have internal predecessors, (745), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-16 06:07:40,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 868 transitions. [2021-12-16 06:07:40,732 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 868 transitions. Word has length 29 [2021-12-16 06:07:40,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:40,733 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 868 transitions. [2021-12-16 06:07:40,734 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:40,734 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 868 transitions. [2021-12-16 06:07:40,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-16 06:07:40,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:40,738 INFO L514 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] [2021-12-16 06:07:40,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 06:07:40,738 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:40,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:40,739 INFO L85 PathProgramCache]: Analyzing trace with hash 786936120, now seen corresponding path program 1 times [2021-12-16 06:07:40,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:40,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988175506] [2021-12-16 06:07:40,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:40,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 06:07:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:40,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:40,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:40,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988175506] [2021-12-16 06:07:40,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988175506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:40,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:40,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:40,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861448410] [2021-12-16 06:07:40,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:40,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:40,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:40,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:40,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:40,835 INFO L87 Difference]: Start difference. First operand 626 states and 868 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:41,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:41,028 INFO L93 Difference]: Finished difference Result 645 states and 892 transitions. [2021-12-16 06:07:41,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:41,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2021-12-16 06:07:41,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:41,031 INFO L225 Difference]: With dead ends: 645 [2021-12-16 06:07:41,031 INFO L226 Difference]: Without dead ends: 645 [2021-12-16 06:07:41,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:41,032 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 393 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 701 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:41,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 701 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:41,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2021-12-16 06:07:41,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 626. [2021-12-16 06:07:41,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 552 states have (on average 1.3478260869565217) internal successors, (744), 561 states have internal predecessors, (744), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-16 06:07:41,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 867 transitions. [2021-12-16 06:07:41,045 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 867 transitions. Word has length 30 [2021-12-16 06:07:41,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:41,045 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 867 transitions. [2021-12-16 06:07:41,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:41,046 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 867 transitions. [2021-12-16 06:07:41,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-16 06:07:41,046 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:41,047 INFO L514 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] [2021-12-16 06:07:41,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 06:07:41,047 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:41,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:41,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1995000776, now seen corresponding path program 1 times [2021-12-16 06:07:41,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:41,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107376988] [2021-12-16 06:07:41,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:41,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:41,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:41,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:41,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107376988] [2021-12-16 06:07:41,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107376988] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:41,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:41,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:41,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477426853] [2021-12-16 06:07:41,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:41,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:41,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:41,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:41,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:41,078 INFO L87 Difference]: Start difference. First operand 626 states and 867 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:41,123 INFO L93 Difference]: Finished difference Result 638 states and 883 transitions. [2021-12-16 06:07:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:41,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-12-16 06:07:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:41,126 INFO L225 Difference]: With dead ends: 638 [2021-12-16 06:07:41,128 INFO L226 Difference]: Without dead ends: 638 [2021-12-16 06:07:41,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:41,129 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 16 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:41,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 547 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:41,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-12-16 06:07:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 637. [2021-12-16 06:07:41,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 563 states have (on average 1.3463587921847247) internal successors, (758), 571 states have internal predecessors, (758), 51 states have call successors, (51), 23 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-16 06:07:41,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 881 transitions. [2021-12-16 06:07:41,143 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 881 transitions. Word has length 30 [2021-12-16 06:07:41,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:41,145 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 881 transitions. [2021-12-16 06:07:41,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:41,145 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 881 transitions. [2021-12-16 06:07:41,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-16 06:07:41,146 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:41,146 INFO L514 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] [2021-12-16 06:07:41,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 06:07:41,147 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:41,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2060099377, now seen corresponding path program 1 times [2021-12-16 06:07:41,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:41,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559854711] [2021-12-16 06:07:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:41,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:41,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 06:07:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:41,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:41,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559854711] [2021-12-16 06:07:41,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559854711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:41,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:41,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:41,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563327213] [2021-12-16 06:07:41,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:41,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:41,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:41,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:41,240 INFO L87 Difference]: Start difference. First operand 637 states and 881 transitions. Second operand has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:41,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:41,445 INFO L93 Difference]: Finished difference Result 656 states and 905 transitions. [2021-12-16 06:07:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:41,446 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2021-12-16 06:07:41,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:41,450 INFO L225 Difference]: With dead ends: 656 [2021-12-16 06:07:41,450 INFO L226 Difference]: Without dead ends: 656 [2021-12-16 06:07:41,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:41,451 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 374 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:41,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 911 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:41,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2021-12-16 06:07:41,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 637. [2021-12-16 06:07:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 563 states have (on average 1.344582593250444) internal successors, (757), 571 states have internal predecessors, (757), 51 states have call successors, (51), 23 states have call predecessors, (51), 22 states have return successors, (72), 43 states have call predecessors, (72), 44 states have call successors, (72) [2021-12-16 06:07:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 880 transitions. [2021-12-16 06:07:41,464 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 880 transitions. Word has length 31 [2021-12-16 06:07:41,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:41,464 INFO L470 AbstractCegarLoop]: Abstraction has 637 states and 880 transitions. [2021-12-16 06:07:41,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:41,465 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 880 transitions. [2021-12-16 06:07:41,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-16 06:07:41,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:41,467 INFO L514 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] [2021-12-16 06:07:41,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 06:07:41,467 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:41,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:41,468 INFO L85 PathProgramCache]: Analyzing trace with hash -477345279, now seen corresponding path program 1 times [2021-12-16 06:07:41,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:41,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945875486] [2021-12-16 06:07:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:41,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:41,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-16 06:07:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:41,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:41,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945875486] [2021-12-16 06:07:41,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945875486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:41,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:41,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:41,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623056901] [2021-12-16 06:07:41,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:41,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:41,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:41,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:41,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:41,517 INFO L87 Difference]: Start difference. First operand 637 states and 880 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:41,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:41,614 INFO L93 Difference]: Finished difference Result 665 states and 914 transitions. [2021-12-16 06:07:41,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:41,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 32 [2021-12-16 06:07:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:41,618 INFO L225 Difference]: With dead ends: 665 [2021-12-16 06:07:41,618 INFO L226 Difference]: Without dead ends: 652 [2021-12-16 06:07:41,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:41,619 INFO L933 BasicCegarLoop]: 295 mSDtfsCounter, 52 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:41,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 1073 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:41,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2021-12-16 06:07:41,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 635. [2021-12-16 06:07:41,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 562 states have (on average 1.3434163701067616) internal successors, (755), 570 states have internal predecessors, (755), 50 states have call successors, (50), 23 states have call predecessors, (50), 22 states have return successors, (71), 42 states have call predecessors, (71), 43 states have call successors, (71) [2021-12-16 06:07:41,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 876 transitions. [2021-12-16 06:07:41,635 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 876 transitions. Word has length 32 [2021-12-16 06:07:41,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:41,636 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 876 transitions. [2021-12-16 06:07:41,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:41,636 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 876 transitions. [2021-12-16 06:07:41,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-16 06:07:41,637 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:41,637 INFO L514 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] [2021-12-16 06:07:41,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 06:07:41,638 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:41,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1919528188, now seen corresponding path program 1 times [2021-12-16 06:07:41,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:41,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037405801] [2021-12-16 06:07:41,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:41,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:41,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:41,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:41,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037405801] [2021-12-16 06:07:41,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037405801] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:41,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:41,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 06:07:41,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350338334] [2021-12-16 06:07:41,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:41,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 06:07:41,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 06:07:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:41,672 INFO L87 Difference]: Start difference. First operand 635 states and 876 transitions. Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:41,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:41,707 INFO L93 Difference]: Finished difference Result 643 states and 887 transitions. [2021-12-16 06:07:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 06:07:41,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2021-12-16 06:07:41,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:41,710 INFO L225 Difference]: With dead ends: 643 [2021-12-16 06:07:41,710 INFO L226 Difference]: Without dead ends: 643 [2021-12-16 06:07:41,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 06:07:41,711 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 5 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:41,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 558 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 06:07:41,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-12-16 06:07:41,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-12-16 06:07:41,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 570 states have (on average 1.343859649122807) internal successors, (766), 578 states have internal predecessors, (766), 50 states have call successors, (50), 23 states have call predecessors, (50), 22 states have return successors, (71), 42 states have call predecessors, (71), 43 states have call successors, (71) [2021-12-16 06:07:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 887 transitions. [2021-12-16 06:07:41,725 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 887 transitions. Word has length 34 [2021-12-16 06:07:41,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:41,726 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 887 transitions. [2021-12-16 06:07:41,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 06:07:41,726 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 887 transitions. [2021-12-16 06:07:41,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-16 06:07:41,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:41,727 INFO L514 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] [2021-12-16 06:07:41,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 06:07:41,728 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:41,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:41,728 INFO L85 PathProgramCache]: Analyzing trace with hash 197237323, now seen corresponding path program 1 times [2021-12-16 06:07:41,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:41,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865924779] [2021-12-16 06:07:41,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:41,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:41,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:41,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:41,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:41,771 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:41,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865924779] [2021-12-16 06:07:41,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865924779] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:41,772 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:41,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 06:07:41,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101865805] [2021-12-16 06:07:41,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:41,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 06:07:41,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:41,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 06:07:41,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:41,774 INFO L87 Difference]: Start difference. First operand 643 states and 887 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:41,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:41,979 INFO L93 Difference]: Finished difference Result 468 states and 616 transitions. [2021-12-16 06:07:41,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:41,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 38 [2021-12-16 06:07:41,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:41,981 INFO L225 Difference]: With dead ends: 468 [2021-12-16 06:07:41,981 INFO L226 Difference]: Without dead ends: 468 [2021-12-16 06:07:41,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:41,982 INFO L933 BasicCegarLoop]: 347 mSDtfsCounter, 382 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:41,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [384 Valid, 824 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:41,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-12-16 06:07:41,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 427. [2021-12-16 06:07:41,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 375 states have (on average 1.312) internal successors, (492), 383 states have internal predecessors, (492), 35 states have call successors, (35), 16 states have call predecessors, (35), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-16 06:07:41,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 566 transitions. [2021-12-16 06:07:41,992 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 566 transitions. Word has length 38 [2021-12-16 06:07:41,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:41,992 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 566 transitions. [2021-12-16 06:07:41,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:41,992 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 566 transitions. [2021-12-16 06:07:41,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-16 06:07:41,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:41,994 INFO L514 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] [2021-12-16 06:07:41,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 06:07:41,994 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:41,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1089851695, now seen corresponding path program 1 times [2021-12-16 06:07:41,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:41,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613565053] [2021-12-16 06:07:41,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:41,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:42,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:42,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:42,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613565053] [2021-12-16 06:07:42,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613565053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:42,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:42,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:42,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66515404] [2021-12-16 06:07:42,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:42,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:42,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:42,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:42,114 INFO L87 Difference]: Start difference. First operand 427 states and 566 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:42,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:42,275 INFO L93 Difference]: Finished difference Result 422 states and 554 transitions. [2021-12-16 06:07:42,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:42,275 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-12-16 06:07:42,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:42,277 INFO L225 Difference]: With dead ends: 422 [2021-12-16 06:07:42,277 INFO L226 Difference]: Without dead ends: 422 [2021-12-16 06:07:42,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:42,278 INFO L933 BasicCegarLoop]: 303 mSDtfsCounter, 74 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:42,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1607 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:42,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-12-16 06:07:42,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 410. [2021-12-16 06:07:42,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 359 states have (on average 1.3008356545961002) internal successors, (467), 366 states have internal predecessors, (467), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-16 06:07:42,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 540 transitions. [2021-12-16 06:07:42,286 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 540 transitions. Word has length 41 [2021-12-16 06:07:42,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:42,287 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 540 transitions. [2021-12-16 06:07:42,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:42,287 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 540 transitions. [2021-12-16 06:07:42,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-12-16 06:07:42,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:42,288 INFO L514 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] [2021-12-16 06:07:42,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 06:07:42,288 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:42,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:42,289 INFO L85 PathProgramCache]: Analyzing trace with hash 738484898, now seen corresponding path program 1 times [2021-12-16 06:07:42,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:42,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557593237] [2021-12-16 06:07:42,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:42,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:42,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:42,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:42,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557593237] [2021-12-16 06:07:42,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557593237] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:42,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:42,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:42,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75735597] [2021-12-16 06:07:42,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:42,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:42,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:42,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:42,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:42,338 INFO L87 Difference]: Start difference. First operand 410 states and 540 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:42,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:42,641 INFO L93 Difference]: Finished difference Result 447 states and 582 transitions. [2021-12-16 06:07:42,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 06:07:42,642 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2021-12-16 06:07:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:42,644 INFO L225 Difference]: With dead ends: 447 [2021-12-16 06:07:42,644 INFO L226 Difference]: Without dead ends: 447 [2021-12-16 06:07:42,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-12-16 06:07:42,644 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 357 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:42,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 1128 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:42,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-12-16 06:07:42,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 410. [2021-12-16 06:07:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 359 states have (on average 1.2952646239554317) internal successors, (465), 366 states have internal predecessors, (465), 34 states have call successors, (34), 16 states have call predecessors, (34), 16 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2021-12-16 06:07:42,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 538 transitions. [2021-12-16 06:07:42,654 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 538 transitions. Word has length 40 [2021-12-16 06:07:42,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:42,654 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 538 transitions. [2021-12-16 06:07:42,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:42,655 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 538 transitions. [2021-12-16 06:07:42,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2021-12-16 06:07:42,656 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:42,656 INFO L514 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] [2021-12-16 06:07:42,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 06:07:42,657 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:42,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:42,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1982956471, now seen corresponding path program 1 times [2021-12-16 06:07:42,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:42,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873689155] [2021-12-16 06:07:42,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:42,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:42,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:07:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:42,700 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:42,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873689155] [2021-12-16 06:07:42,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873689155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:42,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:42,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:42,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407739354] [2021-12-16 06:07:42,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:42,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:42,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:42,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:42,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:42,703 INFO L87 Difference]: Start difference. First operand 410 states and 538 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:42,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:42,832 INFO L93 Difference]: Finished difference Result 436 states and 566 transitions. [2021-12-16 06:07:42,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:42,832 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2021-12-16 06:07:42,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:42,834 INFO L225 Difference]: With dead ends: 436 [2021-12-16 06:07:42,834 INFO L226 Difference]: Without dead ends: 404 [2021-12-16 06:07:42,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:42,835 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 74 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1320 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:42,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 1320 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:42,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-12-16 06:07:42,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 392. [2021-12-16 06:07:42,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 345 states have (on average 1.2927536231884058) internal successors, (446), 351 states have internal predecessors, (446), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (37), 27 states have call predecessors, (37), 26 states have call successors, (37) [2021-12-16 06:07:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 515 transitions. [2021-12-16 06:07:42,843 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 515 transitions. Word has length 41 [2021-12-16 06:07:42,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:42,843 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 515 transitions. [2021-12-16 06:07:42,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:42,844 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 515 transitions. [2021-12-16 06:07:42,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-16 06:07:42,845 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:42,845 INFO L514 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] [2021-12-16 06:07:42,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 06:07:42,845 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:42,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:42,846 INFO L85 PathProgramCache]: Analyzing trace with hash -13657420, now seen corresponding path program 1 times [2021-12-16 06:07:42,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:42,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876880896] [2021-12-16 06:07:42,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:42,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:42,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:42,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876880896] [2021-12-16 06:07:42,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876880896] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:42,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:42,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:42,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184340094] [2021-12-16 06:07:42,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:42,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:42,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:42,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:42,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:42,947 INFO L87 Difference]: Start difference. First operand 392 states and 515 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:43,160 INFO L93 Difference]: Finished difference Result 404 states and 528 transitions. [2021-12-16 06:07:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:43,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-16 06:07:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:43,163 INFO L225 Difference]: With dead ends: 404 [2021-12-16 06:07:43,163 INFO L226 Difference]: Without dead ends: 404 [2021-12-16 06:07:43,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:43,164 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 315 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:43,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 899 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:43,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2021-12-16 06:07:43,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 392. [2021-12-16 06:07:43,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 345 states have (on average 1.289855072463768) internal successors, (445), 351 states have internal predecessors, (445), 32 states have call successors, (32), 14 states have call predecessors, (32), 14 states have return successors, (37), 27 states have call predecessors, (37), 26 states have call successors, (37) [2021-12-16 06:07:43,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 514 transitions. [2021-12-16 06:07:43,173 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 514 transitions. Word has length 43 [2021-12-16 06:07:43,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:43,173 INFO L470 AbstractCegarLoop]: Abstraction has 392 states and 514 transitions. [2021-12-16 06:07:43,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:43,174 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 514 transitions. [2021-12-16 06:07:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 06:07:43,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:43,175 INFO L514 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] [2021-12-16 06:07:43,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 06:07:43,175 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:43,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:43,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1480101209, now seen corresponding path program 1 times [2021-12-16 06:07:43,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:43,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557798712] [2021-12-16 06:07:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:43,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:43,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:43,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557798712] [2021-12-16 06:07:43,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557798712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:43,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:43,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:43,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291317226] [2021-12-16 06:07:43,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:43,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:43,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:43,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:43,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:43,234 INFO L87 Difference]: Start difference. First operand 392 states and 514 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:43,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:43,426 INFO L93 Difference]: Finished difference Result 408 states and 532 transitions. [2021-12-16 06:07:43,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:43,427 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-12-16 06:07:43,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:43,428 INFO L225 Difference]: With dead ends: 408 [2021-12-16 06:07:43,428 INFO L226 Difference]: Without dead ends: 408 [2021-12-16 06:07:43,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:07:43,429 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 334 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 910 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:43,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 910 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:43,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2021-12-16 06:07:43,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 384. [2021-12-16 06:07:43,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 338 states have (on average 1.2810650887573964) internal successors, (433), 344 states have internal predecessors, (433), 32 states have call successors, (32), 14 states have call predecessors, (32), 13 states have return successors, (36), 26 states have call predecessors, (36), 26 states have call successors, (36) [2021-12-16 06:07:43,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 501 transitions. [2021-12-16 06:07:43,437 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 501 transitions. Word has length 42 [2021-12-16 06:07:43,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:43,438 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 501 transitions. [2021-12-16 06:07:43,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:43,438 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 501 transitions. [2021-12-16 06:07:43,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-16 06:07:43,439 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:43,439 INFO L514 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] [2021-12-16 06:07:43,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 06:07:43,439 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:43,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:43,440 INFO L85 PathProgramCache]: Analyzing trace with hash -2093894745, now seen corresponding path program 1 times [2021-12-16 06:07:43,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:43,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375778162] [2021-12-16 06:07:43,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:43,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:43,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:43,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:43,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:43,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375778162] [2021-12-16 06:07:43,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375778162] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:43,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:43,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:43,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317942334] [2021-12-16 06:07:43,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:43,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:43,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:43,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:43,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:43,473 INFO L87 Difference]: Start difference. First operand 384 states and 501 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:43,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:43,590 INFO L93 Difference]: Finished difference Result 397 states and 512 transitions. [2021-12-16 06:07:43,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:43,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2021-12-16 06:07:43,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:43,592 INFO L225 Difference]: With dead ends: 397 [2021-12-16 06:07:43,592 INFO L226 Difference]: Without dead ends: 397 [2021-12-16 06:07:43,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:43,594 INFO L933 BasicCegarLoop]: 284 mSDtfsCounter, 80 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 687 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:43,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 687 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:43,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-12-16 06:07:43,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 381. [2021-12-16 06:07:43,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 381 states, 336 states have (on average 1.2738095238095237) internal successors, (428), 341 states have internal predecessors, (428), 31 states have call successors, (31), 14 states have call predecessors, (31), 13 states have return successors, (36), 26 states have call predecessors, (36), 26 states have call successors, (36) [2021-12-16 06:07:43,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 495 transitions. [2021-12-16 06:07:43,605 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 495 transitions. Word has length 42 [2021-12-16 06:07:43,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:43,605 INFO L470 AbstractCegarLoop]: Abstraction has 381 states and 495 transitions. [2021-12-16 06:07:43,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:43,606 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 495 transitions. [2021-12-16 06:07:43,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-16 06:07:43,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:43,607 INFO L514 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] [2021-12-16 06:07:43,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 06:07:43,607 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:43,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:43,607 INFO L85 PathProgramCache]: Analyzing trace with hash -34042315, now seen corresponding path program 1 times [2021-12-16 06:07:43,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:43,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593659363] [2021-12-16 06:07:43,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:43,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:43,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:43,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593659363] [2021-12-16 06:07:43,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593659363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:43,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:43,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:43,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456246882] [2021-12-16 06:07:43,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:43,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:43,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:43,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:43,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:43,692 INFO L87 Difference]: Start difference. First operand 381 states and 495 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:43,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:43,884 INFO L93 Difference]: Finished difference Result 423 states and 547 transitions. [2021-12-16 06:07:43,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:43,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-16 06:07:43,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:43,886 INFO L225 Difference]: With dead ends: 423 [2021-12-16 06:07:43,886 INFO L226 Difference]: Without dead ends: 422 [2021-12-16 06:07:43,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:43,887 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 227 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:43,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [253 Valid, 1573 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:43,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2021-12-16 06:07:43,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 396. [2021-12-16 06:07:43,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 350 states have (on average 1.262857142857143) internal successors, (442), 355 states have internal predecessors, (442), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (42), 27 states have call predecessors, (42), 26 states have call successors, (42) [2021-12-16 06:07:43,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 515 transitions. [2021-12-16 06:07:43,896 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 515 transitions. Word has length 43 [2021-12-16 06:07:43,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:43,896 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 515 transitions. [2021-12-16 06:07:43,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:43,897 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 515 transitions. [2021-12-16 06:07:43,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-16 06:07:43,898 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:43,898 INFO L514 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] [2021-12-16 06:07:43,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 06:07:43,898 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:43,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:43,899 INFO L85 PathProgramCache]: Analyzing trace with hash -33765485, now seen corresponding path program 1 times [2021-12-16 06:07:43,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:43,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221028738] [2021-12-16 06:07:43,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:43,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:43,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:43,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:43,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:43,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221028738] [2021-12-16 06:07:43,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221028738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:43,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:43,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 06:07:43,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628438532] [2021-12-16 06:07:43,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:43,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 06:07:43,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:43,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 06:07:43,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:43,953 INFO L87 Difference]: Start difference. First operand 396 states and 515 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:44,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:44,149 INFO L93 Difference]: Finished difference Result 419 states and 540 transitions. [2021-12-16 06:07:44,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:44,150 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2021-12-16 06:07:44,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:44,151 INFO L225 Difference]: With dead ends: 419 [2021-12-16 06:07:44,152 INFO L226 Difference]: Without dead ends: 409 [2021-12-16 06:07:44,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:44,152 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 49 mSDsluCounter, 1370 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:44,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1649 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:44,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-12-16 06:07:44,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 393. [2021-12-16 06:07:44,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 347 states have (on average 1.2651296829971181) internal successors, (439), 353 states have internal predecessors, (439), 31 states have call successors, (31), 14 states have call predecessors, (31), 14 states have return successors, (41), 26 states have call predecessors, (41), 26 states have call successors, (41) [2021-12-16 06:07:44,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 511 transitions. [2021-12-16 06:07:44,161 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 511 transitions. Word has length 43 [2021-12-16 06:07:44,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:44,161 INFO L470 AbstractCegarLoop]: Abstraction has 393 states and 511 transitions. [2021-12-16 06:07:44,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:44,162 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 511 transitions. [2021-12-16 06:07:44,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-16 06:07:44,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:44,163 INFO L514 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] [2021-12-16 06:07:44,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 06:07:44,163 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:44,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:44,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1181888463, now seen corresponding path program 1 times [2021-12-16 06:07:44,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:44,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362959684] [2021-12-16 06:07:44,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:44,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-16 06:07:44,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:44,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:44,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362959684] [2021-12-16 06:07:44,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362959684] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:44,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:44,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:44,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35154055] [2021-12-16 06:07:44,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:44,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:44,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:44,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:44,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:44,218 INFO L87 Difference]: Start difference. First operand 393 states and 511 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:44,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:44,448 INFO L93 Difference]: Finished difference Result 409 states and 526 transitions. [2021-12-16 06:07:44,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:44,449 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 44 [2021-12-16 06:07:44,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:44,450 INFO L225 Difference]: With dead ends: 409 [2021-12-16 06:07:44,450 INFO L226 Difference]: Without dead ends: 397 [2021-12-16 06:07:44,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:44,451 INFO L933 BasicCegarLoop]: 283 mSDtfsCounter, 384 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:44,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [391 Valid, 837 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:44,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2021-12-16 06:07:44,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 377. [2021-12-16 06:07:44,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 333 states have (on average 1.2702702702702702) internal successors, (423), 338 states have internal predecessors, (423), 30 states have call successors, (30), 14 states have call predecessors, (30), 13 states have return successors, (35), 25 states have call predecessors, (35), 25 states have call successors, (35) [2021-12-16 06:07:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 488 transitions. [2021-12-16 06:07:44,459 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 488 transitions. Word has length 44 [2021-12-16 06:07:44,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:44,459 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 488 transitions. [2021-12-16 06:07:44,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:44,459 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 488 transitions. [2021-12-16 06:07:44,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-16 06:07:44,460 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:44,460 INFO L514 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] [2021-12-16 06:07:44,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 06:07:44,461 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:44,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:44,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1424622961, now seen corresponding path program 1 times [2021-12-16 06:07:44,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:44,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462796651] [2021-12-16 06:07:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:44,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:44,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:44,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:44,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462796651] [2021-12-16 06:07:44,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462796651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:44,506 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:44,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 06:07:44,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208077518] [2021-12-16 06:07:44,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:44,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 06:07:44,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:44,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 06:07:44,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 06:07:44,508 INFO L87 Difference]: Start difference. First operand 377 states and 488 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:44,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:44,644 INFO L93 Difference]: Finished difference Result 468 states and 599 transitions. [2021-12-16 06:07:44,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 06:07:44,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 46 [2021-12-16 06:07:44,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:44,647 INFO L225 Difference]: With dead ends: 468 [2021-12-16 06:07:44,647 INFO L226 Difference]: Without dead ends: 468 [2021-12-16 06:07:44,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 06:07:44,657 INFO L933 BasicCegarLoop]: 319 mSDtfsCounter, 160 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:44,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 747 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:44,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2021-12-16 06:07:44,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 430. [2021-12-16 06:07:44,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 381 states have (on average 1.2703412073490814) internal successors, (484), 385 states have internal predecessors, (484), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2021-12-16 06:07:44,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 557 transitions. [2021-12-16 06:07:44,668 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 557 transitions. Word has length 46 [2021-12-16 06:07:44,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:44,669 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 557 transitions. [2021-12-16 06:07:44,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:44,669 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 557 transitions. [2021-12-16 06:07:44,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 06:07:44,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:44,670 INFO L514 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] [2021-12-16 06:07:44,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-16 06:07:44,671 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:44,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:44,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1973534822, now seen corresponding path program 1 times [2021-12-16 06:07:44,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:44,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787373419] [2021-12-16 06:07:44,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:44,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:44,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:44,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:44,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787373419] [2021-12-16 06:07:44,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787373419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:44,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:44,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:44,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173516110] [2021-12-16 06:07:44,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:44,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:44,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:44,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:44,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:44,750 INFO L87 Difference]: Start difference. First operand 430 states and 557 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:44,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:44,910 INFO L93 Difference]: Finished difference Result 471 states and 604 transitions. [2021-12-16 06:07:44,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:44,910 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-16 06:07:44,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:44,912 INFO L225 Difference]: With dead ends: 471 [2021-12-16 06:07:44,912 INFO L226 Difference]: Without dead ends: 471 [2021-12-16 06:07:44,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:44,912 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 52 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:44,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 1645 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:44,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2021-12-16 06:07:44,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 430. [2021-12-16 06:07:44,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 381 states have (on average 1.2650918635170603) internal successors, (482), 385 states have internal predecessors, (482), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (41), 29 states have call predecessors, (41), 28 states have call successors, (41) [2021-12-16 06:07:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 555 transitions. [2021-12-16 06:07:44,928 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 555 transitions. Word has length 48 [2021-12-16 06:07:44,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:44,929 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 555 transitions. [2021-12-16 06:07:44,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:44,930 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 555 transitions. [2021-12-16 06:07:44,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-16 06:07:44,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:44,932 INFO L514 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] [2021-12-16 06:07:44,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-16 06:07:44,933 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:44,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:44,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1518352747, now seen corresponding path program 1 times [2021-12-16 06:07:44,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:44,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304707420] [2021-12-16 06:07:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:44,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 06:07:44,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:44,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:44,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304707420] [2021-12-16 06:07:44,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304707420] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:44,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:44,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:44,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266276384] [2021-12-16 06:07:44,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:44,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:44,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:44,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:44,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:44,998 INFO L87 Difference]: Start difference. First operand 430 states and 555 transitions. Second operand has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:45,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:45,236 INFO L93 Difference]: Finished difference Result 454 states and 581 transitions. [2021-12-16 06:07:45,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:45,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2021-12-16 06:07:45,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:45,238 INFO L225 Difference]: With dead ends: 454 [2021-12-16 06:07:45,238 INFO L226 Difference]: Without dead ends: 438 [2021-12-16 06:07:45,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:45,239 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 53 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1844 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:45,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1844 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:45,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-12-16 06:07:45,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 426. [2021-12-16 06:07:45,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 378 states have (on average 1.2645502645502646) internal successors, (478), 382 states have internal predecessors, (478), 31 states have call successors, (31), 16 states have call predecessors, (31), 16 states have return successors, (40), 28 states have call predecessors, (40), 27 states have call successors, (40) [2021-12-16 06:07:45,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 549 transitions. [2021-12-16 06:07:45,247 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 549 transitions. Word has length 48 [2021-12-16 06:07:45,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:45,248 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 549 transitions. [2021-12-16 06:07:45,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.0) internal successors, (45), 7 states have internal predecessors, (45), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:45,248 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 549 transitions. [2021-12-16 06:07:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-16 06:07:45,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:45,249 INFO L514 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] [2021-12-16 06:07:45,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-16 06:07:45,250 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:45,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:45,250 INFO L85 PathProgramCache]: Analyzing trace with hash 882823039, now seen corresponding path program 1 times [2021-12-16 06:07:45,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:45,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921300301] [2021-12-16 06:07:45,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:45,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:45,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:45,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:45,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:45,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921300301] [2021-12-16 06:07:45,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921300301] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:45,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:45,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:45,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995428704] [2021-12-16 06:07:45,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:45,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:45,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:45,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:45,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:45,312 INFO L87 Difference]: Start difference. First operand 426 states and 549 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:45,564 INFO L93 Difference]: Finished difference Result 450 states and 575 transitions. [2021-12-16 06:07:45,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:45,565 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-16 06:07:45,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:45,566 INFO L225 Difference]: With dead ends: 450 [2021-12-16 06:07:45,567 INFO L226 Difference]: Without dead ends: 433 [2021-12-16 06:07:45,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:45,567 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 53 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:45,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1806 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:45,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2021-12-16 06:07:45,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 421. [2021-12-16 06:07:45,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 421 states, 374 states have (on average 1.2647058823529411) internal successors, (473), 378 states have internal predecessors, (473), 30 states have call successors, (30), 16 states have call predecessors, (30), 16 states have return successors, (39), 27 states have call predecessors, (39), 26 states have call successors, (39) [2021-12-16 06:07:45,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 542 transitions. [2021-12-16 06:07:45,575 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 542 transitions. Word has length 49 [2021-12-16 06:07:45,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:45,575 INFO L470 AbstractCegarLoop]: Abstraction has 421 states and 542 transitions. [2021-12-16 06:07:45,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:45,576 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 542 transitions. [2021-12-16 06:07:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-16 06:07:45,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:45,577 INFO L514 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] [2021-12-16 06:07:45,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-16 06:07:45,577 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:45,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:45,577 INFO L85 PathProgramCache]: Analyzing trace with hash 163830842, now seen corresponding path program 1 times [2021-12-16 06:07:45,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:45,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728394740] [2021-12-16 06:07:45,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:45,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:45,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:45,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:45,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728394740] [2021-12-16 06:07:45,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728394740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:45,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:45,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:45,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878273744] [2021-12-16 06:07:45,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:45,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:45,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:45,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:45,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:45,648 INFO L87 Difference]: Start difference. First operand 421 states and 542 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:45,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:45,883 INFO L93 Difference]: Finished difference Result 445 states and 568 transitions. [2021-12-16 06:07:45,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:45,883 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2021-12-16 06:07:45,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:45,884 INFO L225 Difference]: With dead ends: 445 [2021-12-16 06:07:45,884 INFO L226 Difference]: Without dead ends: 429 [2021-12-16 06:07:45,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:45,885 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 53 mSDsluCounter, 1501 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:45,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 1760 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:45,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-12-16 06:07:45,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 417. [2021-12-16 06:07:45,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 371 states have (on average 1.2641509433962264) internal successors, (469), 375 states have internal predecessors, (469), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2021-12-16 06:07:45,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 536 transitions. [2021-12-16 06:07:45,893 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 536 transitions. Word has length 49 [2021-12-16 06:07:45,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:45,893 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 536 transitions. [2021-12-16 06:07:45,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 7 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:45,894 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 536 transitions. [2021-12-16 06:07:45,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-16 06:07:45,895 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:45,895 INFO L514 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] [2021-12-16 06:07:45,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-16 06:07:45,895 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:45,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:45,896 INFO L85 PathProgramCache]: Analyzing trace with hash -48892372, now seen corresponding path program 1 times [2021-12-16 06:07:45,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:45,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752899687] [2021-12-16 06:07:45,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:45,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:45,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:45,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:45,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:45,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752899687] [2021-12-16 06:07:45,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752899687] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:45,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:45,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:45,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941979322] [2021-12-16 06:07:45,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:45,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:45,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:45,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:45,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:45,970 INFO L87 Difference]: Start difference. First operand 417 states and 536 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:46,149 INFO L93 Difference]: Finished difference Result 561 states and 736 transitions. [2021-12-16 06:07:46,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:46,149 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2021-12-16 06:07:46,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:46,152 INFO L225 Difference]: With dead ends: 561 [2021-12-16 06:07:46,152 INFO L226 Difference]: Without dead ends: 561 [2021-12-16 06:07:46,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:46,153 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 104 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1833 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:46,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 1833 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:46,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2021-12-16 06:07:46,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 417. [2021-12-16 06:07:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 371 states have (on average 1.261455525606469) internal successors, (468), 375 states have internal predecessors, (468), 29 states have call successors, (29), 16 states have call predecessors, (29), 16 states have return successors, (38), 26 states have call predecessors, (38), 25 states have call successors, (38) [2021-12-16 06:07:46,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 535 transitions. [2021-12-16 06:07:46,165 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 535 transitions. Word has length 51 [2021-12-16 06:07:46,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:46,165 INFO L470 AbstractCegarLoop]: Abstraction has 417 states and 535 transitions. [2021-12-16 06:07:46,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:46,165 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 535 transitions. [2021-12-16 06:07:46,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-16 06:07:46,166 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:46,166 INFO L514 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] [2021-12-16 06:07:46,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-16 06:07:46,167 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:46,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:46,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1190154103, now seen corresponding path program 1 times [2021-12-16 06:07:46,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:46,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143734362] [2021-12-16 06:07:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:46,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-16 06:07:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:46,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:46,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143734362] [2021-12-16 06:07:46,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143734362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:46,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:46,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:46,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487824312] [2021-12-16 06:07:46,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:46,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:46,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:46,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:46,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:46,233 INFO L87 Difference]: Start difference. First operand 417 states and 535 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:46,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:46,449 INFO L93 Difference]: Finished difference Result 441 states and 561 transitions. [2021-12-16 06:07:46,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:46,449 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2021-12-16 06:07:46,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:46,451 INFO L225 Difference]: With dead ends: 441 [2021-12-16 06:07:46,451 INFO L226 Difference]: Without dead ends: 407 [2021-12-16 06:07:46,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-16 06:07:46,452 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 61 mSDsluCounter, 1503 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:46,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 1764 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:46,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2021-12-16 06:07:46,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 395. [2021-12-16 06:07:46,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 352 states have (on average 1.2613636363636365) internal successors, (444), 356 states have internal predecessors, (444), 27 states have call successors, (27), 15 states have call predecessors, (27), 15 states have return successors, (36), 24 states have call predecessors, (36), 23 states have call successors, (36) [2021-12-16 06:07:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 507 transitions. [2021-12-16 06:07:46,460 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 507 transitions. Word has length 53 [2021-12-16 06:07:46,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:46,460 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 507 transitions. [2021-12-16 06:07:46,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 06:07:46,460 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 507 transitions. [2021-12-16 06:07:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-16 06:07:46,461 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:46,462 INFO L514 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] [2021-12-16 06:07:46,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-16 06:07:46,462 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:46,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1140585270, now seen corresponding path program 1 times [2021-12-16 06:07:46,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:46,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074520720] [2021-12-16 06:07:46,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:46,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:46,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 06:07:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:46,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:46,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074520720] [2021-12-16 06:07:46,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074520720] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:46,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:46,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:46,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842075299] [2021-12-16 06:07:46,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:46,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:46,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:46,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:46,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:46,541 INFO L87 Difference]: Start difference. First operand 395 states and 507 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:46,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:46,766 INFO L93 Difference]: Finished difference Result 382 states and 481 transitions. [2021-12-16 06:07:46,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:46,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 59 [2021-12-16 06:07:46,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:46,769 INFO L225 Difference]: With dead ends: 382 [2021-12-16 06:07:46,769 INFO L226 Difference]: Without dead ends: 382 [2021-12-16 06:07:46,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:46,770 INFO L933 BasicCegarLoop]: 310 mSDtfsCounter, 132 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1387 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:46,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 1387 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:46,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-12-16 06:07:46,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 362. [2021-12-16 06:07:46,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 324 states have (on average 1.2623456790123457) internal successors, (409), 327 states have internal predecessors, (409), 24 states have call successors, (24), 14 states have call predecessors, (24), 13 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) [2021-12-16 06:07:46,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 457 transitions. [2021-12-16 06:07:46,778 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 457 transitions. Word has length 59 [2021-12-16 06:07:46,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:46,778 INFO L470 AbstractCegarLoop]: Abstraction has 362 states and 457 transitions. [2021-12-16 06:07:46,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:46,779 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 457 transitions. [2021-12-16 06:07:46,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-16 06:07:46,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:46,780 INFO L514 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] [2021-12-16 06:07:46,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-16 06:07:46,780 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:46,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:46,781 INFO L85 PathProgramCache]: Analyzing trace with hash 731705651, now seen corresponding path program 1 times [2021-12-16 06:07:46,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:46,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476588145] [2021-12-16 06:07:46,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:46,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:07:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 06:07:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:46,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:46,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476588145] [2021-12-16 06:07:46,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476588145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:46,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:46,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:46,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563642689] [2021-12-16 06:07:46,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:46,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:46,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:46,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:46,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:46,852 INFO L87 Difference]: Start difference. First operand 362 states and 457 transitions. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:47,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:47,179 INFO L93 Difference]: Finished difference Result 487 states and 595 transitions. [2021-12-16 06:07:47,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 06:07:47,180 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2021-12-16 06:07:47,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:47,181 INFO L225 Difference]: With dead ends: 487 [2021-12-16 06:07:47,181 INFO L226 Difference]: Without dead ends: 487 [2021-12-16 06:07:47,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-12-16 06:07:47,182 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 360 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:47,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [366 Valid, 1172 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:47,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2021-12-16 06:07:47,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 456. [2021-12-16 06:07:47,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 408 states have (on average 1.2475490196078431) internal successors, (509), 413 states have internal predecessors, (509), 26 states have call successors, (26), 20 states have call predecessors, (26), 21 states have return successors, (27), 23 states have call predecessors, (27), 23 states have call successors, (27) [2021-12-16 06:07:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 562 transitions. [2021-12-16 06:07:47,193 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 562 transitions. Word has length 61 [2021-12-16 06:07:47,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:47,193 INFO L470 AbstractCegarLoop]: Abstraction has 456 states and 562 transitions. [2021-12-16 06:07:47,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 7 states have internal predecessors, (56), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:47,194 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 562 transitions. [2021-12-16 06:07:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-16 06:07:47,195 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:47,195 INFO L514 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] [2021-12-16 06:07:47,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-16 06:07:47,195 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:47,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:47,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1386771644, now seen corresponding path program 1 times [2021-12-16 06:07:47,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:47,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255316476] [2021-12-16 06:07:47,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:47,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:47,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 06:07:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 06:07:47,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:47,277 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:47,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255316476] [2021-12-16 06:07:47,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255316476] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:47,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:47,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 06:07:47,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806957163] [2021-12-16 06:07:47,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:47,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 06:07:47,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:47,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 06:07:47,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:47,279 INFO L87 Difference]: Start difference. First operand 456 states and 562 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:47,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:47,542 INFO L93 Difference]: Finished difference Result 455 states and 560 transitions. [2021-12-16 06:07:47,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:47,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2021-12-16 06:07:47,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:47,543 INFO L225 Difference]: With dead ends: 455 [2021-12-16 06:07:47,543 INFO L226 Difference]: Without dead ends: 343 [2021-12-16 06:07:47,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:07:47,544 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 97 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:47,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 1606 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:47,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-12-16 06:07:47,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2021-12-16 06:07:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 304 states have (on average 1.2532894736842106) internal successors, (381), 308 states have internal predecessors, (381), 21 states have call successors, (21), 16 states have call predecessors, (21), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2021-12-16 06:07:47,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 425 transitions. [2021-12-16 06:07:47,549 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 425 transitions. Word has length 62 [2021-12-16 06:07:47,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:47,550 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 425 transitions. [2021-12-16 06:07:47,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 7 states have internal predecessors, (57), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:47,550 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 425 transitions. [2021-12-16 06:07:47,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-16 06:07:47,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:47,551 INFO L514 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] [2021-12-16 06:07:47,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-16 06:07:47,552 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:47,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:47,552 INFO L85 PathProgramCache]: Analyzing trace with hash -643436666, now seen corresponding path program 1 times [2021-12-16 06:07:47,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:47,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006919678] [2021-12-16 06:07:47,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:47,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:47,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 06:07:47,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:47,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:47,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006919678] [2021-12-16 06:07:47,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006919678] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:47,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:47,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 06:07:47,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684757213] [2021-12-16 06:07:47,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:47,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 06:07:47,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:47,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 06:07:47,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:47,642 INFO L87 Difference]: Start difference. First operand 343 states and 425 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:47,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:47,859 INFO L93 Difference]: Finished difference Result 375 states and 461 transitions. [2021-12-16 06:07:47,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:47,860 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2021-12-16 06:07:47,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:47,861 INFO L225 Difference]: With dead ends: 375 [2021-12-16 06:07:47,861 INFO L226 Difference]: Without dead ends: 359 [2021-12-16 06:07:47,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:07:47,862 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 225 mSDsluCounter, 963 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:47,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 1139 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:47,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-16 06:07:47,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 351. [2021-12-16 06:07:47,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 311 states have (on average 1.247588424437299) internal successors, (388), 315 states have internal predecessors, (388), 21 states have call successors, (21), 16 states have call predecessors, (21), 18 states have return successors, (25), 20 states have call predecessors, (25), 19 states have call successors, (25) [2021-12-16 06:07:47,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 434 transitions. [2021-12-16 06:07:47,868 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 434 transitions. Word has length 63 [2021-12-16 06:07:47,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:47,868 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 434 transitions. [2021-12-16 06:07:47,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 7 states have internal predecessors, (58), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:47,869 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 434 transitions. [2021-12-16 06:07:47,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-16 06:07:47,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:47,870 INFO L514 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] [2021-12-16 06:07:47,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-16 06:07:47,870 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:47,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:47,871 INFO L85 PathProgramCache]: Analyzing trace with hash -164766848, now seen corresponding path program 1 times [2021-12-16 06:07:47,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:47,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080231877] [2021-12-16 06:07:47,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:47,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 06:07:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:47,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:47,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080231877] [2021-12-16 06:07:47,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080231877] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:47,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:47,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 06:07:47,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863428252] [2021-12-16 06:07:47,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:47,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 06:07:47,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:47,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 06:07:47,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:47,960 INFO L87 Difference]: Start difference. First operand 351 states and 434 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:48,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:48,122 INFO L93 Difference]: Finished difference Result 375 states and 460 transitions. [2021-12-16 06:07:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:48,122 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2021-12-16 06:07:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:48,124 INFO L225 Difference]: With dead ends: 375 [2021-12-16 06:07:48,124 INFO L226 Difference]: Without dead ends: 359 [2021-12-16 06:07:48,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-12-16 06:07:48,124 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 71 mSDsluCounter, 1108 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1297 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:48,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 1297 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:48,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-16 06:07:48,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 343. [2021-12-16 06:07:48,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 304 states have (on average 1.25) internal successors, (380), 308 states have internal predecessors, (380), 21 states have call successors, (21), 16 states have call predecessors, (21), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2021-12-16 06:07:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 424 transitions. [2021-12-16 06:07:48,134 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 424 transitions. Word has length 64 [2021-12-16 06:07:48,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:48,134 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 424 transitions. [2021-12-16 06:07:48,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 7 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:48,135 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 424 transitions. [2021-12-16 06:07:48,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-16 06:07:48,136 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:48,136 INFO L514 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] [2021-12-16 06:07:48,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-16 06:07:48,136 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:48,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:48,137 INFO L85 PathProgramCache]: Analyzing trace with hash 955115294, now seen corresponding path program 1 times [2021-12-16 06:07:48,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:48,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218230347] [2021-12-16 06:07:48,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:48,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:48,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:48,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 06:07:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:48,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:48,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218230347] [2021-12-16 06:07:48,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218230347] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:48,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:48,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:48,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809213105] [2021-12-16 06:07:48,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:48,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:48,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:48,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:48,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:48,218 INFO L87 Difference]: Start difference. First operand 343 states and 424 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:48,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:48,372 INFO L93 Difference]: Finished difference Result 395 states and 488 transitions. [2021-12-16 06:07:48,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 06:07:48,372 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 68 [2021-12-16 06:07:48,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:48,373 INFO L225 Difference]: With dead ends: 395 [2021-12-16 06:07:48,373 INFO L226 Difference]: Without dead ends: 370 [2021-12-16 06:07:48,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-12-16 06:07:48,375 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 106 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:48,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 1041 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:48,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-12-16 06:07:48,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 354. [2021-12-16 06:07:48,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 314 states have (on average 1.2261146496815287) internal successors, (385), 319 states have internal predecessors, (385), 22 states have call successors, (22), 16 states have call predecessors, (22), 17 states have return successors, (23), 19 states have call predecessors, (23), 19 states have call successors, (23) [2021-12-16 06:07:48,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 430 transitions. [2021-12-16 06:07:48,381 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 430 transitions. Word has length 68 [2021-12-16 06:07:48,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:48,381 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 430 transitions. [2021-12-16 06:07:48,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:48,382 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 430 transitions. [2021-12-16 06:07:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-16 06:07:48,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:48,384 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:48,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-16 06:07:48,385 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:48,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:48,385 INFO L85 PathProgramCache]: Analyzing trace with hash 162641819, now seen corresponding path program 1 times [2021-12-16 06:07:48,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:48,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389033437] [2021-12-16 06:07:48,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:48,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 06:07:48,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-16 06:07:48,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:48,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389033437] [2021-12-16 06:07:48,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389033437] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:48,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:48,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 06:07:48,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155375739] [2021-12-16 06:07:48,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:48,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 06:07:48,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:48,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 06:07:48,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:48,458 INFO L87 Difference]: Start difference. First operand 354 states and 430 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:48,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:48,569 INFO L93 Difference]: Finished difference Result 389 states and 473 transitions. [2021-12-16 06:07:48,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 06:07:48,569 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (4), 2 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 71 [2021-12-16 06:07:48,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:48,571 INFO L225 Difference]: With dead ends: 389 [2021-12-16 06:07:48,571 INFO L226 Difference]: Without dead ends: 389 [2021-12-16 06:07:48,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:48,572 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 77 mSDsluCounter, 940 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:48,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 1169 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-12-16 06:07:48,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 262. [2021-12-16 06:07:48,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 231 states have (on average 1.1818181818181819) internal successors, (273), 235 states have internal predecessors, (273), 16 states have call successors, (16), 12 states have call predecessors, (16), 14 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2021-12-16 06:07:48,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 308 transitions. [2021-12-16 06:07:48,577 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 308 transitions. Word has length 71 [2021-12-16 06:07:48,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:48,578 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 308 transitions. [2021-12-16 06:07:48,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 06:07:48,578 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 308 transitions. [2021-12-16 06:07:48,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-16 06:07:48,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:48,579 INFO L514 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] [2021-12-16 06:07:48,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-16 06:07:48,579 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:48,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:48,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1179991342, now seen corresponding path program 1 times [2021-12-16 06:07:48,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:48,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317240265] [2021-12-16 06:07:48,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:48,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:48,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:48,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 06:07:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 06:07:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:48,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:48,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317240265] [2021-12-16 06:07:48,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317240265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:48,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:48,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:48,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667136493] [2021-12-16 06:07:48,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:48,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:48,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:48,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:48,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:48,660 INFO L87 Difference]: Start difference. First operand 262 states and 308 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:48,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:48,788 INFO L93 Difference]: Finished difference Result 258 states and 301 transitions. [2021-12-16 06:07:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:48,789 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 74 [2021-12-16 06:07:48,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:48,790 INFO L225 Difference]: With dead ends: 258 [2021-12-16 06:07:48,790 INFO L226 Difference]: Without dead ends: 256 [2021-12-16 06:07:48,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:07:48,790 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 46 mSDsluCounter, 788 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:48,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 947 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:48,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2021-12-16 06:07:48,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 208. [2021-12-16 06:07:48,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 184 states have (on average 1.1630434782608696) internal successors, (214), 187 states have internal predecessors, (214), 12 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (13), 11 states have call predecessors, (13), 11 states have call successors, (13) [2021-12-16 06:07:48,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 239 transitions. [2021-12-16 06:07:48,823 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 239 transitions. Word has length 74 [2021-12-16 06:07:48,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:48,823 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 239 transitions. [2021-12-16 06:07:48,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:48,825 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 239 transitions. [2021-12-16 06:07:48,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-16 06:07:48,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:48,826 INFO L514 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] [2021-12-16 06:07:48,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-16 06:07:48,826 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:48,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:48,827 INFO L85 PathProgramCache]: Analyzing trace with hash 928752582, now seen corresponding path program 1 times [2021-12-16 06:07:48,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:48,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349295319] [2021-12-16 06:07:48,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:48,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:48,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 06:07:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 06:07:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 06:07:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:48,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:48,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:48,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349295319] [2021-12-16 06:07:48,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349295319] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:48,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:48,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:48,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470389904] [2021-12-16 06:07:48,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:48,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:48,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:48,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:48,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:48,907 INFO L87 Difference]: Start difference. First operand 208 states and 239 transitions. Second operand has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:49,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:49,195 INFO L93 Difference]: Finished difference Result 399 states and 460 transitions. [2021-12-16 06:07:49,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 06:07:49,196 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 74 [2021-12-16 06:07:49,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:49,197 INFO L225 Difference]: With dead ends: 399 [2021-12-16 06:07:49,197 INFO L226 Difference]: Without dead ends: 359 [2021-12-16 06:07:49,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2021-12-16 06:07:49,198 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 370 mSDsluCounter, 906 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:49,198 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 1185 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:49,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-16 06:07:49,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 188. [2021-12-16 06:07:49,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 168 states have (on average 1.1607142857142858) internal successors, (195), 170 states have internal predecessors, (195), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-16 06:07:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 214 transitions. [2021-12-16 06:07:49,202 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 214 transitions. Word has length 74 [2021-12-16 06:07:49,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:49,202 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 214 transitions. [2021-12-16 06:07:49,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:49,203 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 214 transitions. [2021-12-16 06:07:49,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-16 06:07:49,204 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:49,204 INFO L514 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] [2021-12-16 06:07:49,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-16 06:07:49,205 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:49,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:49,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1434511596, now seen corresponding path program 1 times [2021-12-16 06:07:49,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:49,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578049372] [2021-12-16 06:07:49,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:49,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 06:07:49,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 06:07:49,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:49,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578049372] [2021-12-16 06:07:49,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578049372] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:49,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:49,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:49,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123913599] [2021-12-16 06:07:49,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:49,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:49,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:49,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:49,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:49,267 INFO L87 Difference]: Start difference. First operand 188 states and 214 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:49,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:49,346 INFO L93 Difference]: Finished difference Result 196 states and 222 transitions. [2021-12-16 06:07:49,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:49,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 80 [2021-12-16 06:07:49,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:49,347 INFO L225 Difference]: With dead ends: 196 [2021-12-16 06:07:49,347 INFO L226 Difference]: Without dead ends: 194 [2021-12-16 06:07:49,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:49,348 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 45 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:49,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 479 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:49,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-16 06:07:49,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2021-12-16 06:07:49,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 168 states have (on average 1.1547619047619047) internal successors, (194), 170 states have internal predecessors, (194), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-16 06:07:49,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 213 transitions. [2021-12-16 06:07:49,351 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 213 transitions. Word has length 80 [2021-12-16 06:07:49,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:49,352 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 213 transitions. [2021-12-16 06:07:49,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-16 06:07:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 213 transitions. [2021-12-16 06:07:49,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-16 06:07:49,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:49,353 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 06:07:49,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-16 06:07:49,354 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:49,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1155457, now seen corresponding path program 1 times [2021-12-16 06:07:49,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:49,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961725479] [2021-12-16 06:07:49,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:49,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 06:07:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 06:07:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 06:07:49,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:49,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961725479] [2021-12-16 06:07:49,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961725479] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:49,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:49,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:49,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739822065] [2021-12-16 06:07:49,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:49,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:49,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:49,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:49,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:49,428 INFO L87 Difference]: Start difference. First operand 188 states and 213 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:49,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:49,510 INFO L93 Difference]: Finished difference Result 218 states and 247 transitions. [2021-12-16 06:07:49,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:49,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 100 [2021-12-16 06:07:49,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:49,511 INFO L225 Difference]: With dead ends: 218 [2021-12-16 06:07:49,511 INFO L226 Difference]: Without dead ends: 218 [2021-12-16 06:07:49,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 06:07:49,512 INFO L933 BasicCegarLoop]: 163 mSDtfsCounter, 67 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:49,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 544 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:49,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-12-16 06:07:49,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 190. [2021-12-16 06:07:49,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 170 states have (on average 1.1529411764705881) internal successors, (196), 172 states have internal predecessors, (196), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-16 06:07:49,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 215 transitions. [2021-12-16 06:07:49,517 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 215 transitions. Word has length 100 [2021-12-16 06:07:49,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:49,517 INFO L470 AbstractCegarLoop]: Abstraction has 190 states and 215 transitions. [2021-12-16 06:07:49,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:49,518 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 215 transitions. [2021-12-16 06:07:49,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-16 06:07:49,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:49,518 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 06:07:49,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-16 06:07:49,519 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:49,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:49,519 INFO L85 PathProgramCache]: Analyzing trace with hash 877885761, now seen corresponding path program 1 times [2021-12-16 06:07:49,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:49,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472914304] [2021-12-16 06:07:49,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:49,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:49,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 06:07:49,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 06:07:49,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,621 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 06:07:49,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:49,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472914304] [2021-12-16 06:07:49,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472914304] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:49,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:49,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 06:07:49,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885931272] [2021-12-16 06:07:49,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:49,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 06:07:49,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:49,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 06:07:49,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-16 06:07:49,624 INFO L87 Difference]: Start difference. First operand 190 states and 215 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:49,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:49,802 INFO L93 Difference]: Finished difference Result 227 states and 258 transitions. [2021-12-16 06:07:49,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:49,803 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 100 [2021-12-16 06:07:49,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:49,804 INFO L225 Difference]: With dead ends: 227 [2021-12-16 06:07:49,804 INFO L226 Difference]: Without dead ends: 194 [2021-12-16 06:07:49,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-12-16 06:07:49,805 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 300 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:49,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 776 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:49,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-16 06:07:49,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 188. [2021-12-16 06:07:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 168 states have (on average 1.1428571428571428) internal successors, (192), 170 states have internal predecessors, (192), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-16 06:07:49,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 211 transitions. [2021-12-16 06:07:49,808 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 211 transitions. Word has length 100 [2021-12-16 06:07:49,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:49,808 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 211 transitions. [2021-12-16 06:07:49,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:49,808 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 211 transitions. [2021-12-16 06:07:49,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-16 06:07:49,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:49,809 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 06:07:49,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-16 06:07:49,809 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:49,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:49,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1148812128, now seen corresponding path program 1 times [2021-12-16 06:07:49,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:49,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235818] [2021-12-16 06:07:49,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:49,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 06:07:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 06:07:49,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:49,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 06:07:49,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:49,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235818] [2021-12-16 06:07:49,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:49,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:49,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-16 06:07:49,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267324790] [2021-12-16 06:07:49,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:49,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 06:07:49,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:49,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 06:07:49,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:07:49,982 INFO L87 Difference]: Start difference. First operand 188 states and 211 transitions. Second operand has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 11 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:50,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:50,309 INFO L93 Difference]: Finished difference Result 293 states and 337 transitions. [2021-12-16 06:07:50,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 06:07:50,309 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 11 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 101 [2021-12-16 06:07:50,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:50,311 INFO L225 Difference]: With dead ends: 293 [2021-12-16 06:07:50,311 INFO L226 Difference]: Without dead ends: 262 [2021-12-16 06:07:50,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2021-12-16 06:07:50,312 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 491 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:50,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [491 Valid, 1203 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:50,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-16 06:07:50,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 203. [2021-12-16 06:07:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 182 states have (on average 1.1483516483516483) internal successors, (209), 184 states have internal predecessors, (209), 9 states have call successors, (9), 9 states have call predecessors, (9), 11 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2021-12-16 06:07:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 229 transitions. [2021-12-16 06:07:50,316 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 229 transitions. Word has length 101 [2021-12-16 06:07:50,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:50,317 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 229 transitions. [2021-12-16 06:07:50,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.071428571428571) internal successors, (85), 11 states have internal predecessors, (85), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 229 transitions. [2021-12-16 06:07:50,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-16 06:07:50,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:50,318 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1] [2021-12-16 06:07:50,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-16 06:07:50,319 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:50,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:50,319 INFO L85 PathProgramCache]: Analyzing trace with hash 312231464, now seen corresponding path program 1 times [2021-12-16 06:07:50,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:50,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525469944] [2021-12-16 06:07:50,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:50,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:50,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 06:07:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 06:07:50,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,463 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-16 06:07:50,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:50,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525469944] [2021-12-16 06:07:50,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525469944] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:50,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:50,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-16 06:07:50,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812361768] [2021-12-16 06:07:50,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:50,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-16 06:07:50,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:50,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-16 06:07:50,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-12-16 06:07:50,465 INFO L87 Difference]: Start difference. First operand 203 states and 229 transitions. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 11 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:50,655 INFO L93 Difference]: Finished difference Result 220 states and 248 transitions. [2021-12-16 06:07:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 06:07:50,655 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 11 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 102 [2021-12-16 06:07:50,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:50,656 INFO L225 Difference]: With dead ends: 220 [2021-12-16 06:07:50,656 INFO L226 Difference]: Without dead ends: 217 [2021-12-16 06:07:50,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-16 06:07:50,657 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 50 mSDsluCounter, 1364 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1512 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:50,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1512 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:50,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2021-12-16 06:07:50,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 203. [2021-12-16 06:07:50,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 182 states have (on average 1.1428571428571428) internal successors, (208), 184 states have internal predecessors, (208), 9 states have call successors, (9), 9 states have call predecessors, (9), 11 states have return successors, (11), 9 states have call predecessors, (11), 8 states have call successors, (11) [2021-12-16 06:07:50,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 228 transitions. [2021-12-16 06:07:50,661 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 228 transitions. Word has length 102 [2021-12-16 06:07:50,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:50,661 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 228 transitions. [2021-12-16 06:07:50,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 11 states have internal predecessors, (87), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:50,661 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 228 transitions. [2021-12-16 06:07:50,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-16 06:07:50,662 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:50,663 INFO L514 BasicCegarLoop]: trace histogram [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, 1] [2021-12-16 06:07:50,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-16 06:07:50,663 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:50,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:50,663 INFO L85 PathProgramCache]: Analyzing trace with hash -231607862, now seen corresponding path program 1 times [2021-12-16 06:07:50,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:50,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711169183] [2021-12-16 06:07:50,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:50,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 06:07:50,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 06:07:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,726 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-16 06:07:50,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:50,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711169183] [2021-12-16 06:07:50,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711169183] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:50,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:50,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 06:07:50,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866621924] [2021-12-16 06:07:50,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:50,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 06:07:50,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:50,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 06:07:50,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 06:07:50,729 INFO L87 Difference]: Start difference. First operand 203 states and 228 transitions. Second operand has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:50,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:50,808 INFO L93 Difference]: Finished difference Result 204 states and 226 transitions. [2021-12-16 06:07:50,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 06:07:50,808 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 105 [2021-12-16 06:07:50,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:50,809 INFO L225 Difference]: With dead ends: 204 [2021-12-16 06:07:50,809 INFO L226 Difference]: Without dead ends: 195 [2021-12-16 06:07:50,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-12-16 06:07:50,810 INFO L933 BasicCegarLoop]: 126 mSDtfsCounter, 175 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:50,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 277 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:50,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-16 06:07:50,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 181. [2021-12-16 06:07:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 161 states have (on average 1.124223602484472) internal successors, (181), 163 states have internal predecessors, (181), 9 states have call successors, (9), 9 states have call predecessors, (9), 10 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2021-12-16 06:07:50,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 200 transitions. [2021-12-16 06:07:50,813 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 200 transitions. Word has length 105 [2021-12-16 06:07:50,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:50,814 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 200 transitions. [2021-12-16 06:07:50,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.833333333333334) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-16 06:07:50,814 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 200 transitions. [2021-12-16 06:07:50,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 06:07:50,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:50,815 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:50,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-16 06:07:50,815 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:50,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:50,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1876893126, now seen corresponding path program 1 times [2021-12-16 06:07:50,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:50,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314576853] [2021-12-16 06:07:50,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:50,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:50,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 06:07:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-16 06:07:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 06:07:50,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-16 06:07:50,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:50,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314576853] [2021-12-16 06:07:50,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314576853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:50,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:50,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:50,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116708621] [2021-12-16 06:07:50,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:50,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:50,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:50,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:50,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:50,920 INFO L87 Difference]: Start difference. First operand 181 states and 200 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 06:07:51,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:51,020 INFO L93 Difference]: Finished difference Result 170 states and 186 transitions. [2021-12-16 06:07:51,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 06:07:51,021 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 111 [2021-12-16 06:07:51,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:51,021 INFO L225 Difference]: With dead ends: 170 [2021-12-16 06:07:51,022 INFO L226 Difference]: Without dead ends: 160 [2021-12-16 06:07:51,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-16 06:07:51,022 INFO L933 BasicCegarLoop]: 122 mSDtfsCounter, 66 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 624 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:51,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 624 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:51,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-16 06:07:51,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-12-16 06:07:51,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 143 states have (on average 1.1118881118881119) internal successors, (159), 144 states have internal predecessors, (159), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-16 06:07:51,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 175 transitions. [2021-12-16 06:07:51,026 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 175 transitions. Word has length 111 [2021-12-16 06:07:51,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:51,026 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 175 transitions. [2021-12-16 06:07:51,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 06:07:51,026 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 175 transitions. [2021-12-16 06:07:51,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-16 06:07:51,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:51,027 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:51,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-16 06:07:51,028 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:51,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:51,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1629424061, now seen corresponding path program 1 times [2021-12-16 06:07:51,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:51,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416793243] [2021-12-16 06:07:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:51,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 06:07:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 06:07:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 06:07:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 06:07:51,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:51,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416793243] [2021-12-16 06:07:51,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416793243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:51,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:51,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 06:07:51,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165805038] [2021-12-16 06:07:51,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:51,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 06:07:51,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:51,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 06:07:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-16 06:07:51,119 INFO L87 Difference]: Start difference. First operand 160 states and 175 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 06:07:51,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:51,319 INFO L93 Difference]: Finished difference Result 278 states and 303 transitions. [2021-12-16 06:07:51,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 06:07:51,320 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2021-12-16 06:07:51,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:51,321 INFO L225 Difference]: With dead ends: 278 [2021-12-16 06:07:51,321 INFO L226 Difference]: Without dead ends: 160 [2021-12-16 06:07:51,321 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-12-16 06:07:51,321 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 136 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:51,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 755 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 06:07:51,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-12-16 06:07:51,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-12-16 06:07:51,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 143 states have (on average 1.1048951048951048) internal successors, (158), 144 states have internal predecessors, (158), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 7 states have call predecessors, (8), 7 states have call successors, (8) [2021-12-16 06:07:51,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 174 transitions. [2021-12-16 06:07:51,324 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 174 transitions. Word has length 112 [2021-12-16 06:07:51,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:51,324 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 174 transitions. [2021-12-16 06:07:51,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 06:07:51,325 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 174 transitions. [2021-12-16 06:07:51,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-16 06:07:51,325 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 06:07:51,326 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 06:07:51,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-16 06:07:51,326 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK === [errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-16 06:07:51,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 06:07:51,326 INFO L85 PathProgramCache]: Analyzing trace with hash 692377857, now seen corresponding path program 1 times [2021-12-16 06:07:51,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 06:07:51,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79297939] [2021-12-16 06:07:51,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 06:07:51,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 06:07:51,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-16 06:07:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-16 06:07:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 06:07:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 06:07:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 06:07:51,470 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-16 06:07:51,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 06:07:51,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79297939] [2021-12-16 06:07:51,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79297939] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 06:07:51,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 06:07:51,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-16 06:07:51,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582322245] [2021-12-16 06:07:51,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 06:07:51,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-16 06:07:51,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 06:07:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-16 06:07:51,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-16 06:07:51,472 INFO L87 Difference]: Start difference. First operand 160 states and 174 transitions. Second operand has 13 states, 13 states have (on average 7.0) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 06:07:51,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 06:07:51,758 INFO L93 Difference]: Finished difference Result 170 states and 187 transitions. [2021-12-16 06:07:51,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 06:07:51,759 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 112 [2021-12-16 06:07:51,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 06:07:51,759 INFO L225 Difference]: With dead ends: 170 [2021-12-16 06:07:51,759 INFO L226 Difference]: Without dead ends: 0 [2021-12-16 06:07:51,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=421, Unknown=0, NotChecked=0, Total=552 [2021-12-16 06:07:51,760 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 401 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 06:07:51,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 604 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 06:07:51,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-16 06:07:51,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-16 06:07:51,761 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) [2021-12-16 06:07:51,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-16 06:07:51,761 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 112 [2021-12-16 06:07:51,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 06:07:51,761 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-16 06:07:51,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.0) internal successors, (91), 10 states have internal predecessors, (91), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-16 06:07:51,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-16 06:07:51,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-16 06:07:51,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorFnErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 2 remaining) [2021-12-16 06:07:51,763 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (0 of 2 remaining) [2021-12-16 06:07:51,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-16 06:07:51,766 INFO L732 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] [2021-12-16 06:07:51,768 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 06:07:51,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:07:51 BoogieIcfgContainer [2021-12-16 06:07:51,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 06:07:51,772 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 06:07:51,772 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 06:07:51,772 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 06:07:51,772 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:07:38" (3/4) ... [2021-12-16 06:07:51,774 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 06:07:51,780 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure KeWaitForSingleObject [2021-12-16 06:07:51,780 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IoSetDeviceInterfaceState [2021-12-16 06:07:51,780 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCompleteRequest [2021-12-16 06:07:51,780 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure errorFn [2021-12-16 06:07:51,780 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure IofCallDriver [2021-12-16 06:07:51,795 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 63 nodes and edges [2021-12-16 06:07:51,804 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2021-12-16 06:07:51,806 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-12-16 06:07:51,807 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-16 06:07:51,906 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 06:07:51,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 06:07:51,907 INFO L158 Benchmark]: Toolchain (without parser) took 14267.11ms. Allocated memory was 98.6MB in the beginning and 226.5MB in the end (delta: 127.9MB). Free memory was 67.4MB in the beginning and 76.0MB in the end (delta: -8.6MB). Peak memory consumption was 117.5MB. Max. memory is 16.1GB. [2021-12-16 06:07:51,907 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 56.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 06:07:51,907 INFO L158 Benchmark]: CACSL2BoogieTranslator took 390.22ms. Allocated memory is still 98.6MB. Free memory was 67.4MB in the beginning and 64.8MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-16 06:07:51,908 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.80ms. Allocated memory is still 98.6MB. Free memory was 64.8MB in the beginning and 60.0MB in the end (delta: 4.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-12-16 06:07:51,908 INFO L158 Benchmark]: Boogie Preprocessor took 61.21ms. Allocated memory is still 98.6MB. Free memory was 60.0MB in the beginning and 57.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 06:07:51,908 INFO L158 Benchmark]: RCFGBuilder took 766.75ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 56.7MB in the beginning and 71.7MB in the end (delta: -15.0MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. [2021-12-16 06:07:51,908 INFO L158 Benchmark]: TraceAbstraction took 12832.94ms. Allocated memory was 130.0MB in the beginning and 226.5MB in the end (delta: 96.5MB). Free memory was 71.1MB in the beginning and 94.9MB in the end (delta: -23.8MB). Peak memory consumption was 71.2MB. Max. memory is 16.1GB. [2021-12-16 06:07:51,909 INFO L158 Benchmark]: Witness Printer took 134.98ms. Allocated memory is still 226.5MB. Free memory was 94.9MB in the beginning and 76.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-16 06:07:51,910 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 98.6MB. Free memory is still 56.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 390.22ms. Allocated memory is still 98.6MB. Free memory was 67.4MB in the beginning and 64.8MB in the end (delta: 2.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 74.80ms. Allocated memory is still 98.6MB. Free memory was 64.8MB in the beginning and 60.0MB in the end (delta: 4.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 61.21ms. Allocated memory is still 98.6MB. Free memory was 60.0MB in the beginning and 57.0MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 766.75ms. Allocated memory was 98.6MB in the beginning and 130.0MB in the end (delta: 31.5MB). Free memory was 56.7MB in the beginning and 71.7MB in the end (delta: -15.0MB). Peak memory consumption was 20.1MB. Max. memory is 16.1GB. * TraceAbstraction took 12832.94ms. Allocated memory was 130.0MB in the beginning and 226.5MB in the end (delta: 96.5MB). Free memory was 71.1MB in the beginning and 94.9MB in the end (delta: -23.8MB). Peak memory consumption was 71.2MB. Max. memory is 16.1GB. * Witness Printer took 134.98ms. Allocated memory is still 226.5MB. Free memory was 94.9MB in the beginning and 76.0MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * 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: 65]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 670]: 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 6 procedures, 238 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 12.8s, OverallIterations: 48, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 8.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8907 SdHoareTripleChecker+Valid, 6.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8773 mSDsluCounter, 48550 SdHoareTripleChecker+Invalid, 5.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 36114 mSDsCounter, 1368 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10014 IncrementalHoareTripleChecker+Invalid, 11382 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1368 mSolverCounterUnsat, 12436 mSDtfsCounter, 10014 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 599 GetRequests, 222 SyntacticMatches, 2 SemanticMatches, 375 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=643occurred in iteration=13, InterpolantAutomatonStates: 361, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 48 MinimizatonAttempts, 1427 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 2599 NumberOfCodeBlocks, 2599 NumberOfCodeBlocksAsserted, 48 NumberOfCheckSat, 2551 ConstructedInterpolants, 0 QuantifiedInterpolants, 5883 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 48 InterpolantComputations, 48 PerfectInterpolantSequences, 140/140 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! [2021-12-16 06:07:51,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE