/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf -i ../sv-benchmarks/c/weaver/test-easy11.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 16:42:48,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 16:42:48,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 16:42:48,711 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 16:42:48,786 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-07 16:42:48,787 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-07 16:42:48,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-07 16:42:48,790 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 16:42:48,862 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 16:42:48,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 16:42:48,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 16:42:48,864 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 16:42:48,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 16:42:48,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 16:42:48,870 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 16:42:48,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 16:42:48,871 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 16:42:48,871 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 16:42:48,872 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 16:42:48,873 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 16:42:48,873 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 16:42:48,873 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 16:42:48,874 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 16:42:48,874 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 16:42:48,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 16:42:48,874 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 16:42:48,875 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 16:42:48,875 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 16:42:48,875 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 16:42:48,875 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 16:42:48,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 16:42:48,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 16:42:48,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 16:42:48,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:42:48,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 16:42:48,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 16:42:48,878 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 16:42:48,878 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 16:42:48,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 16:42:48,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 16:42:48,879 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 16:42:49,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 16:42:49,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 16:42:49,356 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 16:42:49,357 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 16:42:49,358 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 16:42:49,359 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy11.wvr.c [2021-10-07 16:42:49,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/437625d06/edb8a0780a0a49fa9041ee4d13294cb7/FLAG414a131a2 [2021-10-07 16:42:50,108 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 16:42:50,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c [2021-10-07 16:42:50,117 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/437625d06/edb8a0780a0a49fa9041ee4d13294cb7/FLAG414a131a2 [2021-10-07 16:42:50,478 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/437625d06/edb8a0780a0a49fa9041ee4d13294cb7 [2021-10-07 16:42:50,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 16:42:50,488 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 16:42:50,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 16:42:50,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 16:42:50,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 16:42:50,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:42:50" (1/1) ... [2021-10-07 16:42:50,497 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b146484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:50, skipping insertion in model container [2021-10-07 16:42:50,497 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 04:42:50" (1/1) ... [2021-10-07 16:42:50,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 16:42:50,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 16:42:50,713 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c[1888,1901] [2021-10-07 16:42:50,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:42:50,742 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 16:42:50,780 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/test-easy11.wvr.c[1888,1901] [2021-10-07 16:42:50,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 16:42:50,807 INFO L208 MainTranslator]: Completed translation [2021-10-07 16:42:50,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:50 WrapperNode [2021-10-07 16:42:50,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 16:42:50,810 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 16:42:50,811 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 16:42:50,811 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 16:42:50,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:50" (1/1) ... [2021-10-07 16:42:50,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:50" (1/1) ... [2021-10-07 16:42:50,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 16:42:50,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 16:42:50,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 16:42:50,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 16:42:50,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:50" (1/1) ... [2021-10-07 16:42:50,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:50" (1/1) ... [2021-10-07 16:42:50,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:50" (1/1) ... [2021-10-07 16:42:50,901 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:50" (1/1) ... [2021-10-07 16:42:50,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:50" (1/1) ... [2021-10-07 16:42:50,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:50" (1/1) ... [2021-10-07 16:42:50,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:50" (1/1) ... [2021-10-07 16:42:50,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 16:42:50,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 16:42:50,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 16:42:50,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 16:42:50,946 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:50" (1/1) ... [2021-10-07 16:42:50,957 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 16:42:50,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 16:42:50,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 16:42:51,018 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 16:42:51,075 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 16:42:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 16:42:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 16:42:51,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 16:42:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 16:42:51,076 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 16:42:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 16:42:51,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 16:42:51,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 16:42:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 16:42:51,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 16:42:51,080 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 16:42:51,464 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 16:42:51,465 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-07 16:42:51,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:42:51 BoogieIcfgContainer [2021-10-07 16:42:51,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 16:42:51,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 16:42:51,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 16:42:51,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 16:42:51,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 04:42:50" (1/3) ... [2021-10-07 16:42:51,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602b4b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:42:51, skipping insertion in model container [2021-10-07 16:42:51,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 04:42:50" (2/3) ... [2021-10-07 16:42:51,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602b4b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 04:42:51, skipping insertion in model container [2021-10-07 16:42:51,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 04:42:51" (3/3) ... [2021-10-07 16:42:51,508 INFO L111 eAbstractionObserver]: Analyzing ICFG test-easy11.wvr.c [2021-10-07 16:42:51,515 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 16:42:51,515 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 16:42:51,515 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 16:42:51,548 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,548 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,549 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,549 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,549 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,549 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,550 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,550 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,550 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,550 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,550 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,551 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,551 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,552 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,552 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,553 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,553 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,553 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,553 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,554 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,554 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,554 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,555 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,555 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,555 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,555 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,556 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,556 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,556 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,556 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,556 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,557 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,557 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,557 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,557 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,558 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,558 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,559 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,559 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,559 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,563 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,563 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,564 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,564 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~x~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,570 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,570 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork1_~x~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,571 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,571 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 16:42:51,584 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 16:42:51,645 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 16:42:51,653 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, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 16:42:51,654 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-07 16:42:51,672 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 16:42:51,695 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 90 transitions, 196 flow [2021-10-07 16:42:51,704 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 90 transitions, 196 flow [2021-10-07 16:42:51,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 91 places, 90 transitions, 196 flow [2021-10-07 16:42:51,806 INFO L129 PetriNetUnfolder]: 6/88 cut-off events. [2021-10-07 16:42:51,806 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 16:42:51,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 6/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 48. Up to 2 conditions per place. [2021-10-07 16:42:51,821 INFO L116 LiptonReduction]: Number of co-enabled transitions 748 [2021-10-07 16:42:59,580 INFO L131 LiptonReduction]: Checked pairs total: 783 [2021-10-07 16:42:59,581 INFO L133 LiptonReduction]: Total number of compositions: 90 [2021-10-07 16:42:59,591 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 27 transitions, 70 flow [2021-10-07 16:42:59,605 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:59,608 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:59,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 16:42:59,615 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:59,615 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 16:42:59,616 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:42:59,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:42:59,622 INFO L82 PathProgramCache]: Analyzing trace with hash 351, now seen corresponding path program 1 times [2021-10-07 16:42:59,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:42:59,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1698370107] [2021-10-07 16:42:59,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:42:59,639 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:42:59,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:42:59,647 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:42:59,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 16:42:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:42:59,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 16:42:59,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:42:59,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:59,722 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:42:59,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:42:59,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:42:59,725 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1698370107] [2021-10-07 16:42:59,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1698370107] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:42:59,727 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:42:59,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 16:42:59,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469753079] [2021-10-07 16:42:59,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 16:42:59,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:42:59,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 16:42:59,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 16:42:59,788 INFO L87 Difference]: Start difference. First operand has 67 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 66 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:42:59,814 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2021-10-07 16:42:59,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 16:42:59,816 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-07 16:42:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:42:59,832 INFO L225 Difference]: With dead ends: 64 [2021-10-07 16:42:59,832 INFO L226 Difference]: Without dead ends: 64 [2021-10-07 16:42:59,833 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 16:42:59,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-07 16:42:59,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-10-07 16:42:59,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 2.6491228070175437) internal successors, (151), 63 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:59,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 151 transitions. [2021-10-07 16:42:59,879 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 151 transitions. Word has length 1 [2021-10-07 16:42:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:42:59,880 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 151 transitions. [2021-10-07 16:42:59,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:42:59,881 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 151 transitions. [2021-10-07 16:42:59,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:42:59,881 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:42:59,881 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:42:59,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:00,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:00,094 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:00,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:00,096 INFO L82 PathProgramCache]: Analyzing trace with hash 343750, now seen corresponding path program 1 times [2021-10-07 16:43:00,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:00,098 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1326261601] [2021-10-07 16:43:00,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:43:00,099 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:00,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:00,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:00,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 16:43:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:43:00,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:43:00,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:00,449 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 16:43:00,450 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-07 16:43:00,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:00,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:00,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:00,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:00,594 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1326261601] [2021-10-07 16:43:00,594 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1326261601] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:43:00,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:43:00,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:43:00,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957463685] [2021-10-07 16:43:00,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:43:00,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:00,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:43:00,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:43:00,598 INFO L87 Difference]: Start difference. First operand 64 states and 151 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:00,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:00,630 INFO L93 Difference]: Finished difference Result 58 states and 139 transitions. [2021-10-07 16:43:00,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:43:00,631 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 16:43:00,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:00,633 INFO L225 Difference]: With dead ends: 58 [2021-10-07 16:43:00,633 INFO L226 Difference]: Without dead ends: 58 [2021-10-07 16:43:00,634 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:43:00,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-07 16:43:00,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-10-07 16:43:00,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 53 states have (on average 2.6226415094339623) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:00,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-07 16:43:00,644 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 3 [2021-10-07 16:43:00,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:00,644 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-07 16:43:00,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:00,645 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-07 16:43:00,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 16:43:00,645 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:00,646 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 16:43:00,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:00,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:00,854 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:00,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:00,856 INFO L82 PathProgramCache]: Analyzing trace with hash 343751, now seen corresponding path program 1 times [2021-10-07 16:43:00,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:00,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068663187] [2021-10-07 16:43:00,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:43:00,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:00,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:00,859 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:00,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 16:43:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:43:00,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:43:00,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:01,026 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-07 16:43:01,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-07 16:43:01,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:01,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:01,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:01,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:01,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068663187] [2021-10-07 16:43:01,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068663187] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:43:01,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:43:01,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:43:01,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561559219] [2021-10-07 16:43:01,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:43:01,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:01,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:43:01,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:43:01,341 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:01,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:01,361 INFO L93 Difference]: Finished difference Result 52 states and 127 transitions. [2021-10-07 16:43:01,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:43:01,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 16:43:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:01,363 INFO L225 Difference]: With dead ends: 52 [2021-10-07 16:43:01,363 INFO L226 Difference]: Without dead ends: 52 [2021-10-07 16:43:01,364 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:43:01,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-07 16:43:01,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-07 16:43:01,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 49 states have (on average 2.5918367346938775) internal successors, (127), 51 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:01,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2021-10-07 16:43:01,372 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 3 [2021-10-07 16:43:01,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:01,372 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2021-10-07 16:43:01,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:01,373 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2021-10-07 16:43:01,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:43:01,373 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:01,373 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:43:01,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-10-07 16:43:01,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:01,585 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:01,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:01,587 INFO L82 PathProgramCache]: Analyzing trace with hash 330350117, now seen corresponding path program 1 times [2021-10-07 16:43:01,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:01,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1799419866] [2021-10-07 16:43:01,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:43:01,589 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:01,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:01,590 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:01,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 16:43:01,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:43:01,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 16:43:01,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:01,748 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 16:43:01,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-07 16:43:01,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:01,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:01,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:01,916 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:01,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1799419866] [2021-10-07 16:43:01,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1799419866] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:43:01,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:43:01,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 16:43:01,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16243676] [2021-10-07 16:43:01,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 16:43:01,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:01,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 16:43:01,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:43:01,919 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:01,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:01,937 INFO L93 Difference]: Finished difference Result 43 states and 100 transitions. [2021-10-07 16:43:01,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:43:01,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:43:01,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:01,939 INFO L225 Difference]: With dead ends: 43 [2021-10-07 16:43:01,939 INFO L226 Difference]: Without dead ends: 43 [2021-10-07 16:43:01,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.3ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 16:43:01,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-07 16:43:01,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-07 16:43:01,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 2.4390243902439024) internal successors, (100), 42 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:01,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 100 transitions. [2021-10-07 16:43:01,946 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 100 transitions. Word has length 5 [2021-10-07 16:43:01,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:01,947 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 100 transitions. [2021-10-07 16:43:01,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:01,947 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 100 transitions. [2021-10-07 16:43:01,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 16:43:01,948 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:01,948 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 16:43:01,967 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:02,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:02,164 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:02,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:02,165 INFO L82 PathProgramCache]: Analyzing trace with hash 330350118, now seen corresponding path program 1 times [2021-10-07 16:43:02,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:02,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175768115] [2021-10-07 16:43:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:43:02,166 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:02,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:02,168 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:02,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 16:43:02,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:43:02,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 16:43:02,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:02,334 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-07 16:43:02,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 4 case distinctions, treesize of input 18 treesize of output 48 [2021-10-07 16:43:02,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:02,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:02,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:02,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175768115] [2021-10-07 16:43:02,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175768115] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:43:02,634 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:43:02,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 16:43:02,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189383092] [2021-10-07 16:43:02,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 16:43:02,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:02,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 16:43:02,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:43:02,637 INFO L87 Difference]: Start difference. First operand 43 states and 100 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:02,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:02,650 INFO L93 Difference]: Finished difference Result 34 states and 73 transitions. [2021-10-07 16:43:02,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 16:43:02,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 16:43:02,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:02,652 INFO L225 Difference]: With dead ends: 34 [2021-10-07 16:43:02,652 INFO L226 Difference]: Without dead ends: 34 [2021-10-07 16:43:02,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 16:43:02,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-10-07 16:43:02,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-10-07 16:43:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 2.212121212121212) internal successors, (73), 33 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:02,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 73 transitions. [2021-10-07 16:43:02,658 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 73 transitions. Word has length 5 [2021-10-07 16:43:02,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:02,658 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 73 transitions. [2021-10-07 16:43:02,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:02,659 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 73 transitions. [2021-10-07 16:43:02,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:43:02,659 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:02,660 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:02,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:02,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:02,876 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:02,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:02,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1848980154, now seen corresponding path program 1 times [2021-10-07 16:43:02,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:02,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [897393707] [2021-10-07 16:43:02,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:43:02,879 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:02,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:02,880 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:02,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 16:43:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:43:02,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:43:02,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:03,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:03,161 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:03,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:03,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:03,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [897393707] [2021-10-07 16:43:03,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [897393707] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:43:03,417 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:43:03,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-07 16:43:03,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132900458] [2021-10-07 16:43:03,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:43:03,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:03,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:43:03,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:43:03,419 INFO L87 Difference]: Start difference. First operand 34 states and 73 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:03,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:03,632 INFO L93 Difference]: Finished difference Result 59 states and 126 transitions. [2021-10-07 16:43:03,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:43:03,633 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 16:43:03,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:03,634 INFO L225 Difference]: With dead ends: 59 [2021-10-07 16:43:03,634 INFO L226 Difference]: Without dead ends: 44 [2021-10-07 16:43:03,635 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 247.6ms TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:43:03,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-10-07 16:43:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2021-10-07 16:43:03,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 37 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:03,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 82 transitions. [2021-10-07 16:43:03,640 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 82 transitions. Word has length 13 [2021-10-07 16:43:03,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:03,640 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 82 transitions. [2021-10-07 16:43:03,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:03,641 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 82 transitions. [2021-10-07 16:43:03,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:43:03,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:03,642 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:03,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:03,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:03,853 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:03,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:03,853 INFO L82 PathProgramCache]: Analyzing trace with hash 207226506, now seen corresponding path program 2 times [2021-10-07 16:43:03,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:03,854 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [718375085] [2021-10-07 16:43:03,854 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:43:03,854 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:03,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:03,856 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:03,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 16:43:03,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:43:03,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:03,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:43:03,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:04,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:04,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:04,427 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:04,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [718375085] [2021-10-07 16:43:04,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [718375085] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:43:04,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:43:04,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-07 16:43:04,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680606156] [2021-10-07 16:43:04,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:43:04,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:04,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:43:04,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:43:04,430 INFO L87 Difference]: Start difference. First operand 38 states and 82 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:04,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:04,816 INFO L93 Difference]: Finished difference Result 55 states and 125 transitions. [2021-10-07 16:43:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:43:04,817 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 16:43:04,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:04,818 INFO L225 Difference]: With dead ends: 55 [2021-10-07 16:43:04,818 INFO L226 Difference]: Without dead ends: 46 [2021-10-07 16:43:04,819 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 299.4ms TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:43:04,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-07 16:43:04,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2021-10-07 16:43:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 2.282051282051282) internal successors, (89), 39 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:04,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 89 transitions. [2021-10-07 16:43:04,824 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 89 transitions. Word has length 13 [2021-10-07 16:43:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:04,824 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 89 transitions. [2021-10-07 16:43:04,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:04,824 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 89 transitions. [2021-10-07 16:43:04,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:43:04,825 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:04,825 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:04,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:05,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:05,036 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:05,037 INFO L82 PathProgramCache]: Analyzing trace with hash 833500596, now seen corresponding path program 3 times [2021-10-07 16:43:05,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:05,037 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794124003] [2021-10-07 16:43:05,037 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:43:05,038 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:05,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:05,039 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:05,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 16:43:05,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 16:43:05,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:05,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:43:05,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:05,358 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:05,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:05,649 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1794124003] [2021-10-07 16:43:05,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1794124003] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:43:05,649 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:43:05,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-07 16:43:05,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361768316] [2021-10-07 16:43:05,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:43:05,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:05,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:43:05,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:43:05,651 INFO L87 Difference]: Start difference. First operand 40 states and 89 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:06,103 INFO L93 Difference]: Finished difference Result 59 states and 137 transitions. [2021-10-07 16:43:06,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:43:06,104 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 16:43:06,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:06,105 INFO L225 Difference]: With dead ends: 59 [2021-10-07 16:43:06,105 INFO L226 Difference]: Without dead ends: 52 [2021-10-07 16:43:06,105 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 336.1ms TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:43:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-07 16:43:06,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2021-10-07 16:43:06,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 2.3555555555555556) internal successors, (106), 45 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:06,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 106 transitions. [2021-10-07 16:43:06,113 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 106 transitions. Word has length 13 [2021-10-07 16:43:06,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:06,113 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 106 transitions. [2021-10-07 16:43:06,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:06,113 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 106 transitions. [2021-10-07 16:43:06,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:43:06,115 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:06,115 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:06,125 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:06,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:06,318 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:06,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:06,319 INFO L82 PathProgramCache]: Analyzing trace with hash 500884128, now seen corresponding path program 4 times [2021-10-07 16:43:06,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:06,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692507625] [2021-10-07 16:43:06,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:43:06,321 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:06,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:06,322 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:06,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 16:43:06,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:43:06,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:06,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:43:06,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:06,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:06,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:06,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692507625] [2021-10-07 16:43:06,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692507625] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:43:06,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:43:06,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-07 16:43:06,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877540950] [2021-10-07 16:43:06,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:43:06,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:06,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:43:06,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:43:06,862 INFO L87 Difference]: Start difference. First operand 46 states and 106 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:07,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:07,058 INFO L93 Difference]: Finished difference Result 61 states and 137 transitions. [2021-10-07 16:43:07,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:43:07,059 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 16:43:07,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:07,060 INFO L225 Difference]: With dead ends: 61 [2021-10-07 16:43:07,060 INFO L226 Difference]: Without dead ends: 52 [2021-10-07 16:43:07,060 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 237.9ms TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:43:07,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-07 16:43:07,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2021-10-07 16:43:07,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 47 states have (on average 2.3617021276595747) internal successors, (111), 47 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:07,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 111 transitions. [2021-10-07 16:43:07,065 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 111 transitions. Word has length 13 [2021-10-07 16:43:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:07,065 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 111 transitions. [2021-10-07 16:43:07,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 111 transitions. [2021-10-07 16:43:07,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:43:07,066 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:07,067 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:07,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:07,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:07,277 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:07,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:07,278 INFO L82 PathProgramCache]: Analyzing trace with hash -121822086, now seen corresponding path program 5 times [2021-10-07 16:43:07,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:07,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92539856] [2021-10-07 16:43:07,279 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:43:07,280 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:07,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:07,281 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:07,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 16:43:07,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 16:43:07,373 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:07,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:43:07,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:07,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:07,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:07,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:07,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:07,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92539856] [2021-10-07 16:43:07,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92539856] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:43:07,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:43:07,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-07 16:43:07,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183042431] [2021-10-07 16:43:07,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:43:07,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:07,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:43:07,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:43:07,891 INFO L87 Difference]: Start difference. First operand 48 states and 111 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:08,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:08,284 INFO L93 Difference]: Finished difference Result 69 states and 165 transitions. [2021-10-07 16:43:08,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:43:08,285 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 16:43:08,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:08,286 INFO L225 Difference]: With dead ends: 69 [2021-10-07 16:43:08,286 INFO L226 Difference]: Without dead ends: 60 [2021-10-07 16:43:08,287 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 386.5ms TimeCoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:43:08,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-07 16:43:08,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2021-10-07 16:43:08,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.4363636363636365) internal successors, (134), 55 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:08,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 134 transitions. [2021-10-07 16:43:08,293 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 134 transitions. Word has length 13 [2021-10-07 16:43:08,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:08,293 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 134 transitions. [2021-10-07 16:43:08,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 134 transitions. [2021-10-07 16:43:08,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 16:43:08,294 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:08,294 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:08,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:08,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:08,496 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:08,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:08,496 INFO L82 PathProgramCache]: Analyzing trace with hash -354422526, now seen corresponding path program 6 times [2021-10-07 16:43:08,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:08,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754240472] [2021-10-07 16:43:08,498 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:43:08,498 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:08,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:08,499 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:08,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 16:43:08,597 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2021-10-07 16:43:08,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:08,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:43:08,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:08,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:08,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:09,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:09,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:09,103 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754240472] [2021-10-07 16:43:09,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754240472] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 16:43:09,103 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 16:43:09,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 10 [2021-10-07 16:43:09,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805686068] [2021-10-07 16:43:09,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:43:09,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:09,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:43:09,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:43:09,105 INFO L87 Difference]: Start difference. First operand 56 states and 134 transitions. Second operand has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:09,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:09,391 INFO L93 Difference]: Finished difference Result 67 states and 159 transitions. [2021-10-07 16:43:09,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 16:43:09,392 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-07 16:43:09,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:09,394 INFO L225 Difference]: With dead ends: 67 [2021-10-07 16:43:09,394 INFO L226 Difference]: Without dead ends: 60 [2021-10-07 16:43:09,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 278.7ms TimeCoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-10-07 16:43:09,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-07 16:43:09,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2021-10-07 16:43:09,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.43859649122807) internal successors, (139), 57 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:09,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 139 transitions. [2021-10-07 16:43:09,406 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 139 transitions. Word has length 13 [2021-10-07 16:43:09,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:09,407 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 139 transitions. [2021-10-07 16:43:09,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:09,411 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 139 transitions. [2021-10-07 16:43:09,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:43:09,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:09,412 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:09,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:09,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:09,613 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:09,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:09,614 INFO L82 PathProgramCache]: Analyzing trace with hash 949738025, now seen corresponding path program 1 times [2021-10-07 16:43:09,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:09,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643541668] [2021-10-07 16:43:09,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:43:09,616 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:09,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:09,617 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:09,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 16:43:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:43:09,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:43:09,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:09,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:09,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:09,848 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:09,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:09,849 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643541668] [2021-10-07 16:43:09,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643541668] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:43:09,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:43:09,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-10-07 16:43:09,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157848810] [2021-10-07 16:43:09,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:43:09,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:09,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:43:09,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:43:09,852 INFO L87 Difference]: Start difference. First operand 58 states and 139 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:09,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:09,914 INFO L93 Difference]: Finished difference Result 80 states and 190 transitions. [2021-10-07 16:43:09,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:43:09,915 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 16:43:09,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:09,916 INFO L225 Difference]: With dead ends: 80 [2021-10-07 16:43:09,916 INFO L226 Difference]: Without dead ends: 80 [2021-10-07 16:43:09,916 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:43:09,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-07 16:43:09,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 60. [2021-10-07 16:43:09,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 59 states have (on average 2.4745762711864407) internal successors, (146), 59 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:09,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 146 transitions. [2021-10-07 16:43:09,921 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 146 transitions. Word has length 14 [2021-10-07 16:43:09,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:09,921 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 146 transitions. [2021-10-07 16:43:09,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:09,922 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 146 transitions. [2021-10-07 16:43:09,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:43:09,923 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:09,923 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:09,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:10,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:10,135 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:10,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:10,136 INFO L82 PathProgramCache]: Analyzing trace with hash 754841097, now seen corresponding path program 2 times [2021-10-07 16:43:10,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:10,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753684378] [2021-10-07 16:43:10,137 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:43:10,137 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:10,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:10,139 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:10,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-07 16:43:10,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:43:10,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:10,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:43:10,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:10,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:10,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:10,442 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:10,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:10,443 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753684378] [2021-10-07 16:43:10,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753684378] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:43:10,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:43:10,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-07 16:43:10,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394080395] [2021-10-07 16:43:10,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:43:10,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:10,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:43:10,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:43:10,445 INFO L87 Difference]: Start difference. First operand 60 states and 146 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:10,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:10,557 INFO L93 Difference]: Finished difference Result 84 states and 192 transitions. [2021-10-07 16:43:10,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:43:10,558 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 16:43:10,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:10,559 INFO L225 Difference]: With dead ends: 84 [2021-10-07 16:43:10,559 INFO L226 Difference]: Without dead ends: 84 [2021-10-07 16:43:10,560 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 75.1ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:43:10,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-07 16:43:10,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 56. [2021-10-07 16:43:10,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.4363636363636365) internal successors, (134), 55 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 134 transitions. [2021-10-07 16:43:10,564 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 134 transitions. Word has length 14 [2021-10-07 16:43:10,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:10,565 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 134 transitions. [2021-10-07 16:43:10,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:10,565 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 134 transitions. [2021-10-07 16:43:10,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:43:10,566 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:10,566 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:10,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:10,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:10,777 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:10,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:10,778 INFO L82 PathProgramCache]: Analyzing trace with hash 406362475, now seen corresponding path program 1 times [2021-10-07 16:43:10,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:10,780 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24239041] [2021-10-07 16:43:10,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:43:10,780 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:10,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:10,781 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:10,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-07 16:43:10,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:43:10,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:43:10,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:11,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:11,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:11,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:11,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:11,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24239041] [2021-10-07 16:43:11,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24239041] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:43:11,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:43:11,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-07 16:43:11,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035903629] [2021-10-07 16:43:11,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:43:11,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:11,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:43:11,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:43:11,108 INFO L87 Difference]: Start difference. First operand 56 states and 134 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:11,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:11,203 INFO L93 Difference]: Finished difference Result 92 states and 194 transitions. [2021-10-07 16:43:11,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 16:43:11,205 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 16:43:11,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:11,206 INFO L225 Difference]: With dead ends: 92 [2021-10-07 16:43:11,206 INFO L226 Difference]: Without dead ends: 92 [2021-10-07 16:43:11,207 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 60.6ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:43:11,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-07 16:43:11,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 58. [2021-10-07 16:43:11,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 2.4035087719298245) internal successors, (137), 57 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:11,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 137 transitions. [2021-10-07 16:43:11,212 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 137 transitions. Word has length 14 [2021-10-07 16:43:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:11,212 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 137 transitions. [2021-10-07 16:43:11,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 137 transitions. [2021-10-07 16:43:11,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:43:11,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:11,213 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:11,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:11,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:11,425 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:11,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:11,426 INFO L82 PathProgramCache]: Analyzing trace with hash -796860709, now seen corresponding path program 3 times [2021-10-07 16:43:11,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:11,427 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1299049757] [2021-10-07 16:43:11,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:43:11,427 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:11,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:11,428 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:11,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-07 16:43:11,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:43:11,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:11,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:43:11,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:11,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:11,727 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:11,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:11,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1299049757] [2021-10-07 16:43:11,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1299049757] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:43:11,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:43:11,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-07 16:43:11,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665230105] [2021-10-07 16:43:11,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:43:11,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:11,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:43:11,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:43:11,731 INFO L87 Difference]: Start difference. First operand 58 states and 137 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:11,824 INFO L93 Difference]: Finished difference Result 84 states and 181 transitions. [2021-10-07 16:43:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 16:43:11,825 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 16:43:11,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:11,826 INFO L225 Difference]: With dead ends: 84 [2021-10-07 16:43:11,826 INFO L226 Difference]: Without dead ends: 84 [2021-10-07 16:43:11,827 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 58.5ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:43:11,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-07 16:43:11,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 56. [2021-10-07 16:43:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.3636363636363638) internal successors, (130), 55 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 130 transitions. [2021-10-07 16:43:11,830 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 130 transitions. Word has length 14 [2021-10-07 16:43:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:11,831 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 130 transitions. [2021-10-07 16:43:11,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:11,831 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 130 transitions. [2021-10-07 16:43:11,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:43:11,832 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:11,832 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:11,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:12,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:12,043 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:12,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:12,044 INFO L82 PathProgramCache]: Analyzing trace with hash -2059515939, now seen corresponding path program 2 times [2021-10-07 16:43:12,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:12,044 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1493404194] [2021-10-07 16:43:12,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:43:12,045 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:12,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:12,047 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:12,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-07 16:43:12,196 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:43:12,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:12,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:43:12,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:12,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:12,278 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:12,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:12,345 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:12,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1493404194] [2021-10-07 16:43:12,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1493404194] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:43:12,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:43:12,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-07 16:43:12,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079640574] [2021-10-07 16:43:12,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:43:12,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:12,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:43:12,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:43:12,347 INFO L87 Difference]: Start difference. First operand 56 states and 130 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:12,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:12,454 INFO L93 Difference]: Finished difference Result 84 states and 180 transitions. [2021-10-07 16:43:12,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:43:12,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 16:43:12,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:12,456 INFO L225 Difference]: With dead ends: 84 [2021-10-07 16:43:12,456 INFO L226 Difference]: Without dead ends: 84 [2021-10-07 16:43:12,456 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 71.5ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:43:12,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-07 16:43:12,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 54. [2021-10-07 16:43:12,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 2.358490566037736) internal successors, (125), 53 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:12,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 125 transitions. [2021-10-07 16:43:12,460 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 125 transitions. Word has length 14 [2021-10-07 16:43:12,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:12,460 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 125 transitions. [2021-10-07 16:43:12,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:12,461 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 125 transitions. [2021-10-07 16:43:12,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 16:43:12,461 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:12,461 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:12,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:12,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:12,662 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:12,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:12,663 INFO L82 PathProgramCache]: Analyzing trace with hash -533242891, now seen corresponding path program 3 times [2021-10-07 16:43:12,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:12,664 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2077784356] [2021-10-07 16:43:12,664 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:43:12,665 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:12,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:12,666 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:12,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-07 16:43:12,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:43:12,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:12,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-07 16:43:12,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:12,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:12,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:12,947 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:12,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2077784356] [2021-10-07 16:43:12,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2077784356] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:43:12,947 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:43:12,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2021-10-07 16:43:12,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588966485] [2021-10-07 16:43:12,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-07 16:43:12,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:12,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-07 16:43:12,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-07 16:43:12,950 INFO L87 Difference]: Start difference. First operand 54 states and 125 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:13,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:13,002 INFO L93 Difference]: Finished difference Result 60 states and 136 transitions. [2021-10-07 16:43:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 16:43:13,008 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-07 16:43:13,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:13,010 INFO L225 Difference]: With dead ends: 60 [2021-10-07 16:43:13,010 INFO L226 Difference]: Without dead ends: 60 [2021-10-07 16:43:13,011 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 35.0ms TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-10-07 16:43:13,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-10-07 16:43:13,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2021-10-07 16:43:13,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 2.2745098039215685) internal successors, (116), 51 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:13,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-07 16:43:13,018 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-07 16:43:13,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:13,018 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-07 16:43:13,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:13,019 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-07 16:43:13,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:43:13,019 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:13,019 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:13,032 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:13,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:13,220 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:13,221 INFO L82 PathProgramCache]: Analyzing trace with hash -622252698, now seen corresponding path program 1 times [2021-10-07 16:43:13,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:13,222 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017203772] [2021-10-07 16:43:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 16:43:13,222 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:13,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:13,224 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:13,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-07 16:43:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:43:13,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:43:13,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:13,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:13,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:14,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:14,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2017203772] [2021-10-07 16:43:14,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2017203772] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:14,415 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:14,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:43:14,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174230111] [2021-10-07 16:43:14,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:43:14,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:14,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:43:14,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:14,417 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:15,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:15,407 INFO L93 Difference]: Finished difference Result 93 states and 195 transitions. [2021-10-07 16:43:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:43:15,408 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:43:15,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:15,409 INFO L225 Difference]: With dead ends: 93 [2021-10-07 16:43:15,409 INFO L226 Difference]: Without dead ends: 74 [2021-10-07 16:43:15,410 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1192.7ms TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:43:15,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-07 16:43:15,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2021-10-07 16:43:15,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 2.272727272727273) internal successors, (125), 55 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:15,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 125 transitions. [2021-10-07 16:43:15,416 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 125 transitions. Word has length 15 [2021-10-07 16:43:15,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:15,417 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 125 transitions. [2021-10-07 16:43:15,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:15,417 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 125 transitions. [2021-10-07 16:43:15,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:43:15,418 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:15,418 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:15,434 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:15,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:15,627 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:15,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:15,628 INFO L82 PathProgramCache]: Analyzing trace with hash 22991766, now seen corresponding path program 2 times [2021-10-07 16:43:15,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:15,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1820128052] [2021-10-07 16:43:15,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:43:15,629 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:15,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:15,631 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:15,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-07 16:43:15,811 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:43:15,811 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:15,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:43:15,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:16,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:16,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:16,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:16,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:16,856 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1820128052] [2021-10-07 16:43:16,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1820128052] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:16,857 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:16,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:43:16,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714043948] [2021-10-07 16:43:16,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:43:16,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:16,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:43:16,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:16,859 INFO L87 Difference]: Start difference. First operand 56 states and 125 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:19,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:19,692 INFO L93 Difference]: Finished difference Result 136 states and 335 transitions. [2021-10-07 16:43:19,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-10-07 16:43:19,693 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:43:19,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:19,694 INFO L225 Difference]: With dead ends: 136 [2021-10-07 16:43:19,694 INFO L226 Difference]: Without dead ends: 118 [2021-10-07 16:43:19,695 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 2595.2ms TimeCoverageRelationStatistics Valid=196, Invalid=860, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 16:43:19,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-07 16:43:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 74. [2021-10-07 16:43:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 73 states have (on average 2.4246575342465753) internal successors, (177), 73 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:19,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 177 transitions. [2021-10-07 16:43:19,700 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 177 transitions. Word has length 15 [2021-10-07 16:43:19,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:19,700 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 177 transitions. [2021-10-07 16:43:19,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:19,701 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 177 transitions. [2021-10-07 16:43:19,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:43:19,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:19,701 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:19,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:19,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:19,914 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:19,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:19,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1467739308, now seen corresponding path program 3 times [2021-10-07 16:43:19,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:19,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1709307351] [2021-10-07 16:43:19,916 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:43:19,916 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:19,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:19,917 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:19,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-07 16:43:20,093 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:43:20,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:20,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:43:20,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:20,461 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:20,462 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:21,079 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:21,079 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1709307351] [2021-10-07 16:43:21,079 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1709307351] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:21,079 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:21,079 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:43:21,079 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098942420] [2021-10-07 16:43:21,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:43:21,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:21,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:43:21,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:21,082 INFO L87 Difference]: Start difference. First operand 74 states and 177 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:26,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:26,232 INFO L93 Difference]: Finished difference Result 207 states and 528 transitions. [2021-10-07 16:43:26,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:43:26,234 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:43:26,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:26,236 INFO L225 Difference]: With dead ends: 207 [2021-10-07 16:43:26,236 INFO L226 Difference]: Without dead ends: 188 [2021-10-07 16:43:26,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 4492.1ms TimeCoverageRelationStatistics Valid=459, Invalid=1991, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 16:43:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-07 16:43:26,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 92. [2021-10-07 16:43:26,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 2.7252747252747254) internal successors, (248), 91 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:26,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 248 transitions. [2021-10-07 16:43:26,244 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 248 transitions. Word has length 15 [2021-10-07 16:43:26,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:26,244 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 248 transitions. [2021-10-07 16:43:26,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:26,244 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 248 transitions. [2021-10-07 16:43:26,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:43:26,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:26,245 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:26,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:26,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:26,458 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:26,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:26,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1700339748, now seen corresponding path program 4 times [2021-10-07 16:43:26,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:26,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601437279] [2021-10-07 16:43:26,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:43:26,461 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:26,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:26,462 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:26,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-07 16:43:26,619 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:43:26,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:26,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:43:26,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:26,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:26,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:27,586 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:27,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601437279] [2021-10-07 16:43:27,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601437279] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:27,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:27,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:43:27,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885197564] [2021-10-07 16:43:27,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:43:27,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:27,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:43:27,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:27,589 INFO L87 Difference]: Start difference. First operand 92 states and 248 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:32,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:32,686 INFO L93 Difference]: Finished difference Result 220 states and 566 transitions. [2021-10-07 16:43:32,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-07 16:43:32,687 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:43:32,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:32,689 INFO L225 Difference]: With dead ends: 220 [2021-10-07 16:43:32,689 INFO L226 Difference]: Without dead ends: 208 [2021-10-07 16:43:32,690 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 4479.8ms TimeCoverageRelationStatistics Valid=502, Invalid=2150, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 16:43:32,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2021-10-07 16:43:32,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 94. [2021-10-07 16:43:32,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 2.6989247311827955) internal successors, (251), 93 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 251 transitions. [2021-10-07 16:43:32,695 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 251 transitions. Word has length 15 [2021-10-07 16:43:32,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:32,696 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 251 transitions. [2021-10-07 16:43:32,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:32,696 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 251 transitions. [2021-10-07 16:43:32,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:43:32,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:32,697 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:32,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:32,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:32,900 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:32,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:32,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1925877126, now seen corresponding path program 5 times [2021-10-07 16:43:32,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:32,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919513098] [2021-10-07 16:43:32,901 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:43:32,902 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:32,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:32,903 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:32,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-07 16:43:33,086 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:43:33,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:33,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:43:33,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:33,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:33,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:33,792 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:33,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:33,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919513098] [2021-10-07 16:43:33,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919513098] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:33,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:33,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-07 16:43:33,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577789483] [2021-10-07 16:43:33,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:43:33,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:33,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:43:33,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:43:33,795 INFO L87 Difference]: Start difference. First operand 94 states and 251 transitions. Second operand has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:35,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:35,171 INFO L93 Difference]: Finished difference Result 171 states and 418 transitions. [2021-10-07 16:43:35,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 16:43:35,172 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:43:35,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:35,174 INFO L225 Difference]: With dead ends: 171 [2021-10-07 16:43:35,174 INFO L226 Difference]: Without dead ends: 154 [2021-10-07 16:43:35,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1153.4ms TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2021-10-07 16:43:35,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-07 16:43:35,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 112. [2021-10-07 16:43:35,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.81981981981982) internal successors, (313), 111 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:35,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 313 transitions. [2021-10-07 16:43:35,180 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 313 transitions. Word has length 15 [2021-10-07 16:43:35,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:35,181 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 313 transitions. [2021-10-07 16:43:35,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0) internal successors, (28), 14 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:35,181 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 313 transitions. [2021-10-07 16:43:35,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:43:35,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:35,182 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:35,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2021-10-07 16:43:35,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:35,391 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:35,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:35,391 INFO L82 PathProgramCache]: Analyzing trace with hash 1312637842, now seen corresponding path program 6 times [2021-10-07 16:43:35,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:35,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64769762] [2021-10-07 16:43:35,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:43:35,393 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:35,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:35,394 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:35,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-07 16:43:35,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:43:35,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:35,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:43:35,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:35,918 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:35,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:36,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:36,675 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:36,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64769762] [2021-10-07 16:43:36,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64769762] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:36,675 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:36,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:43:36,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454672805] [2021-10-07 16:43:36,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:43:36,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:36,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:43:36,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:36,678 INFO L87 Difference]: Start difference. First operand 112 states and 313 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:41,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:41,069 INFO L93 Difference]: Finished difference Result 258 states and 662 transitions. [2021-10-07 16:43:41,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 16:43:41,070 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:43:41,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:41,072 INFO L225 Difference]: With dead ends: 258 [2021-10-07 16:43:41,072 INFO L226 Difference]: Without dead ends: 244 [2021-10-07 16:43:41,073 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 581 ImplicationChecksByTransitivity, 3882.4ms TimeCoverageRelationStatistics Valid=403, Invalid=1759, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:43:41,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-07 16:43:41,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 136. [2021-10-07 16:43:41,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 3.0) internal successors, (405), 135 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 405 transitions. [2021-10-07 16:43:41,080 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 405 transitions. Word has length 15 [2021-10-07 16:43:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:41,080 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 405 transitions. [2021-10-07 16:43:41,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:41,080 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 405 transitions. [2021-10-07 16:43:41,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:43:41,081 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:41,081 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:41,092 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:41,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:41,289 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:41,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:41,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1080037402, now seen corresponding path program 7 times [2021-10-07 16:43:41,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:41,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978967455] [2021-10-07 16:43:41,291 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:43:41,292 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:41,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:41,293 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:41,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-07 16:43:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:43:41,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:43:41,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:41,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:41,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:42,417 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:42,417 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:42,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978967455] [2021-10-07 16:43:42,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978967455] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:42,418 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:42,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:43:42,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928622668] [2021-10-07 16:43:42,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:43:42,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:42,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:43:42,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:42,420 INFO L87 Difference]: Start difference. First operand 136 states and 405 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:47,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:47,284 INFO L93 Difference]: Finished difference Result 240 states and 622 transitions. [2021-10-07 16:43:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 16:43:47,286 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:43:47,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:47,288 INFO L225 Difference]: With dead ends: 240 [2021-10-07 16:43:47,288 INFO L226 Difference]: Without dead ends: 228 [2021-10-07 16:43:47,289 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 4288.8ms TimeCoverageRelationStatistics Valid=445, Invalid=1717, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:43:47,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-07 16:43:47,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 132. [2021-10-07 16:43:47,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.954198473282443) internal successors, (387), 131 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:47,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 387 transitions. [2021-10-07 16:43:47,296 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 387 transitions. Word has length 15 [2021-10-07 16:43:47,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:47,297 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 387 transitions. [2021-10-07 16:43:47,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:47,297 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 387 transitions. [2021-10-07 16:43:47,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:43:47,298 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:47,298 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:47,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:47,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:47,513 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:47,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:47,514 INFO L82 PathProgramCache]: Analyzing trace with hash 224136102, now seen corresponding path program 8 times [2021-10-07 16:43:47,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:47,514 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479565897] [2021-10-07 16:43:47,515 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:43:47,515 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:47,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:47,516 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:47,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-07 16:43:47,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:43:47,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:47,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:43:47,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:48,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:49,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:49,187 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:49,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479565897] [2021-10-07 16:43:49,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479565897] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:49,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:49,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:43:49,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228948453] [2021-10-07 16:43:49,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:43:49,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:49,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:43:49,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:49,189 INFO L87 Difference]: Start difference. First operand 132 states and 387 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:53,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:53,751 INFO L93 Difference]: Finished difference Result 242 states and 610 transitions. [2021-10-07 16:43:53,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 16:43:53,753 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:43:53,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:53,756 INFO L225 Difference]: With dead ends: 242 [2021-10-07 16:43:53,756 INFO L226 Difference]: Without dead ends: 218 [2021-10-07 16:43:53,756 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 358 ImplicationChecksByTransitivity, 4542.9ms TimeCoverageRelationStatistics Valid=273, Invalid=1287, Unknown=0, NotChecked=0, Total=1560 [2021-10-07 16:43:53,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2021-10-07 16:43:53,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 144. [2021-10-07 16:43:53,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 3.027972027972028) internal successors, (433), 143 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:53,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 433 transitions. [2021-10-07 16:43:53,763 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 433 transitions. Word has length 15 [2021-10-07 16:43:53,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:53,763 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 433 transitions. [2021-10-07 16:43:53,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:53,763 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 433 transitions. [2021-10-07 16:43:53,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:43:53,764 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:53,764 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:53,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-07 16:43:53,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:53,978 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:53,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:53,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1067761396, now seen corresponding path program 9 times [2021-10-07 16:43:53,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:53,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172507469] [2021-10-07 16:43:53,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:43:53,980 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:53,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:53,981 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:53,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-07 16:43:54,225 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:43:54,225 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:54,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:43:54,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:54,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:54,514 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:55,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:55,141 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:55,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172507469] [2021-10-07 16:43:55,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172507469] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:55,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:55,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:43:55,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419342350] [2021-10-07 16:43:55,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:43:55,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:55,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:43:55,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:55,144 INFO L87 Difference]: Start difference. First operand 144 states and 433 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:58,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:43:58,271 INFO L93 Difference]: Finished difference Result 295 states and 856 transitions. [2021-10-07 16:43:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 16:43:58,271 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:43:58,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:43:58,275 INFO L225 Difference]: With dead ends: 295 [2021-10-07 16:43:58,275 INFO L226 Difference]: Without dead ends: 278 [2021-10-07 16:43:58,276 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 2895.6ms TimeCoverageRelationStatistics Valid=333, Invalid=1389, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 16:43:58,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-07 16:43:58,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 148. [2021-10-07 16:43:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 3.0136054421768708) internal successors, (443), 147 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:58,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 443 transitions. [2021-10-07 16:43:58,283 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 443 transitions. Word has length 15 [2021-10-07 16:43:58,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:43:58,283 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 443 transitions. [2021-10-07 16:43:58,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:43:58,284 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 443 transitions. [2021-10-07 16:43:58,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:43:58,284 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:43:58,285 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:43:58,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2021-10-07 16:43:58,497 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:43:58,497 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:43:58,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:43:58,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1091316596, now seen corresponding path program 10 times [2021-10-07 16:43:58,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:43:58,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737785846] [2021-10-07 16:43:58,499 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:43:58,499 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:43:58,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:43:58,500 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:43:58,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-07 16:43:58,734 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:43:58,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:43:58,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:43:58,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:43:59,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:59,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:43:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:43:59,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:43:59,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737785846] [2021-10-07 16:43:59,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737785846] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:43:59,554 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:43:59,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:43:59,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403870792] [2021-10-07 16:43:59,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:43:59,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:43:59,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:43:59,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:43:59,556 INFO L87 Difference]: Start difference. First operand 148 states and 443 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:01,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:01,024 INFO L93 Difference]: Finished difference Result 209 states and 569 transitions. [2021-10-07 16:44:01,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 16:44:01,025 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:44:01,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:01,026 INFO L225 Difference]: With dead ends: 209 [2021-10-07 16:44:01,026 INFO L226 Difference]: Without dead ends: 196 [2021-10-07 16:44:01,027 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 1338.2ms TimeCoverageRelationStatistics Valid=121, Invalid=635, Unknown=0, NotChecked=0, Total=756 [2021-10-07 16:44:01,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-07 16:44:01,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 162. [2021-10-07 16:44:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 3.018633540372671) internal successors, (486), 161 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 486 transitions. [2021-10-07 16:44:01,034 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 486 transitions. Word has length 15 [2021-10-07 16:44:01,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:01,034 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 486 transitions. [2021-10-07 16:44:01,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:01,034 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 486 transitions. [2021-10-07 16:44:01,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:44:01,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:01,035 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:01,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:01,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:01,238 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:01,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:01,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1161140828, now seen corresponding path program 11 times [2021-10-07 16:44:01,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:01,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287908050] [2021-10-07 16:44:01,239 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:44:01,240 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:01,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:01,241 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:01,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-07 16:44:01,498 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:44:01,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:44:01,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:44:01,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:01,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:02,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:02,319 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287908050] [2021-10-07 16:44:02,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287908050] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:02,319 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:02,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:44:02,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087845632] [2021-10-07 16:44:02,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:44:02,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:02,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:44:02,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:44:02,321 INFO L87 Difference]: Start difference. First operand 162 states and 486 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:05,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:05,426 INFO L93 Difference]: Finished difference Result 320 states and 842 transitions. [2021-10-07 16:44:05,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-10-07 16:44:05,427 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:44:05,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:05,430 INFO L225 Difference]: With dead ends: 320 [2021-10-07 16:44:05,430 INFO L226 Difference]: Without dead ends: 296 [2021-10-07 16:44:05,430 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 3024.3ms TimeCoverageRelationStatistics Valid=248, Invalid=1012, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 16:44:05,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2021-10-07 16:44:05,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 192. [2021-10-07 16:44:05,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 3.031413612565445) internal successors, (579), 191 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 579 transitions. [2021-10-07 16:44:05,440 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 579 transitions. Word has length 15 [2021-10-07 16:44:05,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:05,440 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 579 transitions. [2021-10-07 16:44:05,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:05,440 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 579 transitions. [2021-10-07 16:44:05,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:44:05,441 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:05,442 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:05,454 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:05,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:05,654 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:05,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:05,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1504940070, now seen corresponding path program 12 times [2021-10-07 16:44:05,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:05,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [350602473] [2021-10-07 16:44:05,656 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:44:05,656 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:05,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:05,657 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:05,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-07 16:44:05,936 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:44:05,937 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:44:05,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:44:05,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:06,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:06,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:06,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:06,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [350602473] [2021-10-07 16:44:06,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [350602473] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:06,826 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:06,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:44:06,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380172646] [2021-10-07 16:44:06,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:44:06,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:06,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:44:06,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:44:06,828 INFO L87 Difference]: Start difference. First operand 192 states and 579 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:11,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:11,983 INFO L93 Difference]: Finished difference Result 466 states and 1390 transitions. [2021-10-07 16:44:11,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-07 16:44:11,985 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:44:11,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:11,989 INFO L225 Difference]: With dead ends: 466 [2021-10-07 16:44:11,989 INFO L226 Difference]: Without dead ends: 448 [2021-10-07 16:44:11,990 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 734 ImplicationChecksByTransitivity, 4455.6ms TimeCoverageRelationStatistics Valid=502, Invalid=2150, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 16:44:11,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-07 16:44:12,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 214. [2021-10-07 16:44:12,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 3.107981220657277) internal successors, (662), 213 states have internal predecessors, (662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:12,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 662 transitions. [2021-10-07 16:44:12,003 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 662 transitions. Word has length 15 [2021-10-07 16:44:12,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:12,003 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 662 transitions. [2021-10-07 16:44:12,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:12,004 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 662 transitions. [2021-10-07 16:44:12,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 16:44:12,005 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:12,005 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:12,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:12,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:12,220 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:12,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:12,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1272339630, now seen corresponding path program 13 times [2021-10-07 16:44:12,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:12,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [142073145] [2021-10-07 16:44:12,221 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:44:12,221 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:12,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:12,222 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:12,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-07 16:44:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:12,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:44:12,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:12,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:12,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:13,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:13,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [142073145] [2021-10-07 16:44:13,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [142073145] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:13,332 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:13,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2021-10-07 16:44:13,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727885487] [2021-10-07 16:44:13,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 16:44:13,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:13,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 16:44:13,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2021-10-07 16:44:13,333 INFO L87 Difference]: Start difference. First operand 214 states and 662 transitions. Second operand has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:14,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:14,477 INFO L93 Difference]: Finished difference Result 253 states and 724 transitions. [2021-10-07 16:44:14,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 16:44:14,478 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-07 16:44:14,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:14,480 INFO L225 Difference]: With dead ends: 253 [2021-10-07 16:44:14,480 INFO L226 Difference]: Without dead ends: 244 [2021-10-07 16:44:14,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1096.1ms TimeCoverageRelationStatistics Valid=130, Invalid=572, Unknown=0, NotChecked=0, Total=702 [2021-10-07 16:44:14,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-10-07 16:44:14,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 210. [2021-10-07 16:44:14,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 209 states have (on average 3.062200956937799) internal successors, (640), 209 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:14,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 640 transitions. [2021-10-07 16:44:14,490 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 640 transitions. Word has length 15 [2021-10-07 16:44:14,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:14,490 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 640 transitions. [2021-10-07 16:44:14,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.0) internal successors, (30), 15 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:14,491 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 640 transitions. [2021-10-07 16:44:14,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:44:14,492 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:14,492 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:14,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:14,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:14,706 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:14,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:14,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1505512171, now seen corresponding path program 14 times [2021-10-07 16:44:14,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:14,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983012605] [2021-10-07 16:44:14,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:44:14,707 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:14,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:14,709 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:14,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-07 16:44:15,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:44:15,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:44:15,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:44:15,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:15,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:15,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:15,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:15,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983012605] [2021-10-07 16:44:15,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983012605] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:15,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:15,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-07 16:44:15,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967810135] [2021-10-07 16:44:15,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 16:44:15,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:15,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 16:44:15,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:44:15,214 INFO L87 Difference]: Start difference. First operand 210 states and 640 transitions. Second operand has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:15,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:15,394 INFO L93 Difference]: Finished difference Result 278 states and 787 transitions. [2021-10-07 16:44:15,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:44:15,395 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:44:15,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:15,401 INFO L225 Difference]: With dead ends: 278 [2021-10-07 16:44:15,401 INFO L226 Difference]: Without dead ends: 278 [2021-10-07 16:44:15,403 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 133.6ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:44:15,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-10-07 16:44:15,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 204. [2021-10-07 16:44:15,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 203 states have (on average 3.0591133004926108) internal successors, (621), 203 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:15,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 621 transitions. [2021-10-07 16:44:15,418 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 621 transitions. Word has length 16 [2021-10-07 16:44:15,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:15,418 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 621 transitions. [2021-10-07 16:44:15,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:15,418 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 621 transitions. [2021-10-07 16:44:15,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:44:15,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:15,420 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:15,435 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:15,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:15,633 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:15,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:15,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1588209405, now seen corresponding path program 15 times [2021-10-07 16:44:15,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:15,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945987280] [2021-10-07 16:44:15,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:44:15,636 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:15,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:15,637 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:15,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-07 16:44:15,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:44:15,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:44:15,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:44:15,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:16,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:16,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:16,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:16,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:16,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945987280] [2021-10-07 16:44:16,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945987280] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:16,157 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:16,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-07 16:44:16,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850756042] [2021-10-07 16:44:16,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:44:16,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:16,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:44:16,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:44:16,159 INFO L87 Difference]: Start difference. First operand 204 states and 621 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:16,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:16,790 INFO L93 Difference]: Finished difference Result 324 states and 873 transitions. [2021-10-07 16:44:16,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:44:16,791 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:44:16,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:16,793 INFO L225 Difference]: With dead ends: 324 [2021-10-07 16:44:16,793 INFO L226 Difference]: Without dead ends: 324 [2021-10-07 16:44:16,794 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 462.1ms TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:44:16,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-10-07 16:44:16,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 202. [2021-10-07 16:44:16,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 3.0646766169154227) internal successors, (616), 201 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:16,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 616 transitions. [2021-10-07 16:44:16,802 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 616 transitions. Word has length 16 [2021-10-07 16:44:16,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:16,803 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 616 transitions. [2021-10-07 16:44:16,803 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:16,803 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 616 transitions. [2021-10-07 16:44:16,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:44:16,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:16,804 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:16,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:17,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:17,018 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:17,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:17,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1450331339, now seen corresponding path program 16 times [2021-10-07 16:44:17,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:17,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [840220945] [2021-10-07 16:44:17,019 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:44:17,019 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:17,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:17,020 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:17,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-07 16:44:17,337 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:44:17,338 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:44:17,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:44:17,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:17,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:17,416 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:17,569 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:17,570 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:17,570 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [840220945] [2021-10-07 16:44:17,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [840220945] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:17,570 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:17,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-07 16:44:17,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713856094] [2021-10-07 16:44:17,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:44:17,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:17,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:44:17,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:44:17,572 INFO L87 Difference]: Start difference. First operand 202 states and 616 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:17,989 INFO L93 Difference]: Finished difference Result 290 states and 786 transitions. [2021-10-07 16:44:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 16:44:17,989 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:44:17,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:17,992 INFO L225 Difference]: With dead ends: 290 [2021-10-07 16:44:17,993 INFO L226 Difference]: Without dead ends: 290 [2021-10-07 16:44:17,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 285.2ms TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:44:17,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-10-07 16:44:18,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 196. [2021-10-07 16:44:18,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 3.051282051282051) internal successors, (595), 195 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 595 transitions. [2021-10-07 16:44:18,001 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 595 transitions. Word has length 16 [2021-10-07 16:44:18,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:18,002 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 595 transitions. [2021-10-07 16:44:18,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:18,002 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 595 transitions. [2021-10-07 16:44:18,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:44:18,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:18,003 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:18,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:18,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:18,216 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:18,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:18,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1601915197, now seen corresponding path program 17 times [2021-10-07 16:44:18,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:18,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [684343037] [2021-10-07 16:44:18,218 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:44:18,218 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:18,218 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:18,219 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:18,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-07 16:44:18,511 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:44:18,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:44:18,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:44:18,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:18,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:18,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:18,708 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:18,708 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:18,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [684343037] [2021-10-07 16:44:18,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [684343037] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:18,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:18,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-10-07 16:44:18,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135089032] [2021-10-07 16:44:18,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:44:18,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:18,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:44:18,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:44:18,711 INFO L87 Difference]: Start difference. First operand 196 states and 595 transitions. Second operand has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:19,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:19,149 INFO L93 Difference]: Finished difference Result 310 states and 832 transitions. [2021-10-07 16:44:19,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-07 16:44:19,150 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:44:19,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:19,152 INFO L225 Difference]: With dead ends: 310 [2021-10-07 16:44:19,153 INFO L226 Difference]: Without dead ends: 310 [2021-10-07 16:44:19,153 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 289.5ms TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:44:19,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2021-10-07 16:44:19,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 200. [2021-10-07 16:44:19,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 3.07035175879397) internal successors, (611), 199 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:19,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 611 transitions. [2021-10-07 16:44:19,162 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 611 transitions. Word has length 16 [2021-10-07 16:44:19,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:19,162 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 611 transitions. [2021-10-07 16:44:19,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:19,162 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 611 transitions. [2021-10-07 16:44:19,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:44:19,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:19,163 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:19,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:19,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:19,377 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:19,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:19,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1120913521, now seen corresponding path program 18 times [2021-10-07 16:44:19,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:19,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331807059] [2021-10-07 16:44:19,378 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:44:19,379 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:19,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:19,380 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:19,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-07 16:44:19,689 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 16:44:19,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:44:19,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:44:19,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:19,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:19,895 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:19,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331807059] [2021-10-07 16:44:19,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331807059] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:19,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:19,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-07 16:44:19,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196490573] [2021-10-07 16:44:19,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:44:19,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:19,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:44:19,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:44:19,897 INFO L87 Difference]: Start difference. First operand 200 states and 611 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:20,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:20,520 INFO L93 Difference]: Finished difference Result 274 states and 764 transitions. [2021-10-07 16:44:20,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:44:20,521 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:44:20,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:20,523 INFO L225 Difference]: With dead ends: 274 [2021-10-07 16:44:20,524 INFO L226 Difference]: Without dead ends: 274 [2021-10-07 16:44:20,524 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 489.1ms TimeCoverageRelationStatistics Valid=122, Invalid=340, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:44:20,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-10-07 16:44:20,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 198. [2021-10-07 16:44:20,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 3.0862944162436547) internal successors, (608), 197 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:20,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 608 transitions. [2021-10-07 16:44:20,532 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 608 transitions. Word has length 16 [2021-10-07 16:44:20,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:20,532 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 608 transitions. [2021-10-07 16:44:20,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:20,533 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 608 transitions. [2021-10-07 16:44:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:44:20,534 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:20,535 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:20,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:20,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:20,749 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:20,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:20,750 INFO L82 PathProgramCache]: Analyzing trace with hash -567303287, now seen corresponding path program 19 times [2021-10-07 16:44:20,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:20,751 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1276757282] [2021-10-07 16:44:20,751 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:44:20,751 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:20,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:20,753 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:20,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-07 16:44:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:21,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:44:21,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:21,151 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:21,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:21,275 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:21,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1276757282] [2021-10-07 16:44:21,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1276757282] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:21,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:21,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2021-10-07 16:44:21,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770302094] [2021-10-07 16:44:21,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:44:21,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:21,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:44:21,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:44:21,278 INFO L87 Difference]: Start difference. First operand 198 states and 608 transitions. Second operand has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:21,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:21,775 INFO L93 Difference]: Finished difference Result 262 states and 745 transitions. [2021-10-07 16:44:21,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:44:21,776 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:44:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:21,777 INFO L225 Difference]: With dead ends: 262 [2021-10-07 16:44:21,777 INFO L226 Difference]: Without dead ends: 262 [2021-10-07 16:44:21,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 390.8ms TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:44:21,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-10-07 16:44:21,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 192. [2021-10-07 16:44:21,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 3.06282722513089) internal successors, (585), 191 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:21,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 585 transitions. [2021-10-07 16:44:21,785 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 585 transitions. Word has length 16 [2021-10-07 16:44:21,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:21,785 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 585 transitions. [2021-10-07 16:44:21,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.1) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:21,786 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 585 transitions. [2021-10-07 16:44:21,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 16:44:21,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:21,787 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:21,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:22,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:22,001 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:22,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:22,002 INFO L82 PathProgramCache]: Analyzing trace with hash -386280253, now seen corresponding path program 20 times [2021-10-07 16:44:22,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:22,003 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548459993] [2021-10-07 16:44:22,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:44:22,003 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:22,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:22,004 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:22,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-07 16:44:22,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:44:22,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:44:22,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:44:22,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:22,416 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:22,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:22,514 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:22,514 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:22,514 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548459993] [2021-10-07 16:44:22,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548459993] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:22,515 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:22,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-10-07 16:44:22,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848365876] [2021-10-07 16:44:22,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-07 16:44:22,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:22,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-07 16:44:22,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-07 16:44:22,517 INFO L87 Difference]: Start difference. First operand 192 states and 585 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:22,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:22,703 INFO L93 Difference]: Finished difference Result 242 states and 701 transitions. [2021-10-07 16:44:22,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:44:22,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-07 16:44:22,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:22,705 INFO L225 Difference]: With dead ends: 242 [2021-10-07 16:44:22,706 INFO L226 Difference]: Without dead ends: 242 [2021-10-07 16:44:22,706 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 143.5ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:44:22,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-07 16:44:22,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 180. [2021-10-07 16:44:22,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 3.011173184357542) internal successors, (539), 179 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:22,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 539 transitions. [2021-10-07 16:44:22,713 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 539 transitions. Word has length 16 [2021-10-07 16:44:22,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:22,713 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 539 transitions. [2021-10-07 16:44:22,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:22,714 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 539 transitions. [2021-10-07 16:44:22,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:44:22,715 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:22,715 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:22,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:22,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:22,928 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:22,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:22,929 INFO L82 PathProgramCache]: Analyzing trace with hash 574402554, now seen corresponding path program 21 times [2021-10-07 16:44:22,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:22,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692058208] [2021-10-07 16:44:22,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:44:22,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:22,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:22,932 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:22,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-07 16:44:23,264 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:44:23,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:44:23,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:44:23,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:23,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:24,735 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:24,735 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:24,735 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692058208] [2021-10-07 16:44:24,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692058208] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:24,735 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:24,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:44:24,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394829401] [2021-10-07 16:44:24,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:44:24,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:24,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:44:24,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:44:24,737 INFO L87 Difference]: Start difference. First operand 180 states and 539 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:29,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:29,321 INFO L93 Difference]: Finished difference Result 410 states and 1116 transitions. [2021-10-07 16:44:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 16:44:29,322 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:44:29,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:29,324 INFO L225 Difference]: With dead ends: 410 [2021-10-07 16:44:29,324 INFO L226 Difference]: Without dead ends: 366 [2021-10-07 16:44:29,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 4694.4ms TimeCoverageRelationStatistics Valid=405, Invalid=1757, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:44:29,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-10-07 16:44:29,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 248. [2021-10-07 16:44:29,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.9959514170040484) internal successors, (740), 247 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:29,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 740 transitions. [2021-10-07 16:44:29,334 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 740 transitions. Word has length 17 [2021-10-07 16:44:29,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:29,334 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 740 transitions. [2021-10-07 16:44:29,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:29,335 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 740 transitions. [2021-10-07 16:44:29,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:44:29,336 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:29,336 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:29,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:29,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:29,549 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:29,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:29,550 INFO L82 PathProgramCache]: Analyzing trace with hash 2083050988, now seen corresponding path program 22 times [2021-10-07 16:44:29,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:29,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953615745] [2021-10-07 16:44:29,551 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:44:29,551 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:29,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:29,553 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:29,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-07 16:44:29,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:44:29,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:44:29,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:44:29,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:30,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:30,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:31,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:31,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953615745] [2021-10-07 16:44:31,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953615745] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:31,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:31,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:44:31,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296843131] [2021-10-07 16:44:31,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:44:31,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:31,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:44:31,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:44:31,376 INFO L87 Difference]: Start difference. First operand 248 states and 740 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:36,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:36,151 INFO L93 Difference]: Finished difference Result 379 states and 1037 transitions. [2021-10-07 16:44:36,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-10-07 16:44:36,152 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:44:36,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:36,155 INFO L225 Difference]: With dead ends: 379 [2021-10-07 16:44:36,155 INFO L226 Difference]: Without dead ends: 366 [2021-10-07 16:44:36,156 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 503 ImplicationChecksByTransitivity, 4365.3ms TimeCoverageRelationStatistics Valid=335, Invalid=1827, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:44:36,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-10-07 16:44:36,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 266. [2021-10-07 16:44:36,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 3.0150943396226415) internal successors, (799), 265 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:36,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 799 transitions. [2021-10-07 16:44:36,165 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 799 transitions. Word has length 17 [2021-10-07 16:44:36,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:36,165 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 799 transitions. [2021-10-07 16:44:36,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:36,165 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 799 transitions. [2021-10-07 16:44:36,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:44:36,166 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:36,166 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:36,179 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2021-10-07 16:44:36,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:36,379 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:36,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:36,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1850450548, now seen corresponding path program 23 times [2021-10-07 16:44:36,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:36,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956862323] [2021-10-07 16:44:36,381 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:44:36,381 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:36,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:36,383 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:36,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-07 16:44:36,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:44:36,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:44:36,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:44:36,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:37,118 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:37,802 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:37,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956862323] [2021-10-07 16:44:37,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956862323] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:37,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:37,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:44:37,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385932862] [2021-10-07 16:44:37,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:44:37,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:37,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:44:37,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:44:37,803 INFO L87 Difference]: Start difference. First operand 266 states and 799 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:43,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:43,668 INFO L93 Difference]: Finished difference Result 452 states and 1238 transitions. [2021-10-07 16:44:43,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 16:44:43,669 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:44:43,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:43,672 INFO L225 Difference]: With dead ends: 452 [2021-10-07 16:44:43,672 INFO L226 Difference]: Without dead ends: 436 [2021-10-07 16:44:43,674 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 4904.4ms TimeCoverageRelationStatistics Valid=431, Invalid=2431, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 16:44:43,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-10-07 16:44:43,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 306. [2021-10-07 16:44:43,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 3.0721311475409836) internal successors, (937), 305 states have internal predecessors, (937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:43,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 937 transitions. [2021-10-07 16:44:43,685 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 937 transitions. Word has length 17 [2021-10-07 16:44:43,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:43,685 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 937 transitions. [2021-10-07 16:44:43,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:43,686 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 937 transitions. [2021-10-07 16:44:43,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:44:43,687 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:43,687 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:43,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:43,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:43,901 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:43,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:43,902 INFO L82 PathProgramCache]: Analyzing trace with hash 942955004, now seen corresponding path program 24 times [2021-10-07 16:44:43,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:43,903 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080456462] [2021-10-07 16:44:43,903 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:44:43,903 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:43,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:43,905 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:43,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2021-10-07 16:44:44,275 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:44:44,275 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:44:44,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:44:44,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:44,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:44,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:45,441 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:45,441 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:45,441 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080456462] [2021-10-07 16:44:45,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080456462] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:45,442 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:45,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:44:45,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769607717] [2021-10-07 16:44:45,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:44:45,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:45,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:44:45,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:44:45,443 INFO L87 Difference]: Start difference. First operand 306 states and 937 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:52,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:44:52,453 INFO L93 Difference]: Finished difference Result 511 states and 1417 transitions. [2021-10-07 16:44:52,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-10-07 16:44:52,454 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:44:52,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:44:52,457 INFO L225 Difference]: With dead ends: 511 [2021-10-07 16:44:52,457 INFO L226 Difference]: Without dead ends: 484 [2021-10-07 16:44:52,458 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 6332.9ms TimeCoverageRelationStatistics Valid=641, Invalid=2221, Unknown=0, NotChecked=0, Total=2862 [2021-10-07 16:44:52,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2021-10-07 16:44:52,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 322. [2021-10-07 16:44:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 321 states have (on average 3.0903426791277258) internal successors, (992), 321 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 992 transitions. [2021-10-07 16:44:52,473 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 992 transitions. Word has length 17 [2021-10-07 16:44:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:44:52,473 INFO L470 AbstractCegarLoop]: Abstraction has 322 states and 992 transitions. [2021-10-07 16:44:52,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:44:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 992 transitions. [2021-10-07 16:44:52,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:44:52,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:44:52,475 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:44:52,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2021-10-07 16:44:52,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:44:52,689 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:44:52,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:44:52,689 INFO L82 PathProgramCache]: Analyzing trace with hash 450022350, now seen corresponding path program 25 times [2021-10-07 16:44:52,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:44:52,690 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393151957] [2021-10-07 16:44:52,690 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:44:52,691 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:44:52,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:44:52,692 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:44:52,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2021-10-07 16:44:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:44:53,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:44:53,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:44:53,515 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:53,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:44:54,586 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:44:54,587 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:44:54,587 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393151957] [2021-10-07 16:44:54,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393151957] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:44:54,587 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:44:54,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:44:54,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458741666] [2021-10-07 16:44:54,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:44:54,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:44:54,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:44:54,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:44:54,589 INFO L87 Difference]: Start difference. First operand 322 states and 992 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:01,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:45:01,146 INFO L93 Difference]: Finished difference Result 527 states and 1496 transitions. [2021-10-07 16:45:01,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:45:01,147 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:45:01,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:45:01,150 INFO L225 Difference]: With dead ends: 527 [2021-10-07 16:45:01,150 INFO L226 Difference]: Without dead ends: 516 [2021-10-07 16:45:01,151 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 772 ImplicationChecksByTransitivity, 6389.9ms TimeCoverageRelationStatistics Valid=604, Invalid=2366, Unknown=0, NotChecked=0, Total=2970 [2021-10-07 16:45:01,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 516 states. [2021-10-07 16:45:01,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 516 to 336. [2021-10-07 16:45:01,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 335 states have (on average 3.083582089552239) internal successors, (1033), 335 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:01,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 1033 transitions. [2021-10-07 16:45:01,161 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 1033 transitions. Word has length 17 [2021-10-07 16:45:01,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:45:01,162 INFO L470 AbstractCegarLoop]: Abstraction has 336 states and 1033 transitions. [2021-10-07 16:45:01,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:01,162 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 1033 transitions. [2021-10-07 16:45:01,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:45:01,163 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:45:01,163 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:45:01,177 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2021-10-07 16:45:01,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:45:01,377 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:45:01,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:45:01,377 INFO L82 PathProgramCache]: Analyzing trace with hash -272882572, now seen corresponding path program 26 times [2021-10-07 16:45:01,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:45:01,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [372841734] [2021-10-07 16:45:01,378 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:45:01,378 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:45:01,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:45:01,379 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:45:01,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2021-10-07 16:45:01,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:45:01,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:45:01,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:45:01,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:45:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:02,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:45:03,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:03,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:45:03,331 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [372841734] [2021-10-07 16:45:03,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [372841734] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:45:03,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:45:03,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:45:03,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318386985] [2021-10-07 16:45:03,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:45:03,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:45:03,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:45:03,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:45:03,333 INFO L87 Difference]: Start difference. First operand 336 states and 1033 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:10,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:45:10,295 INFO L93 Difference]: Finished difference Result 640 states and 1810 transitions. [2021-10-07 16:45:10,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:45:10,296 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:45:10,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:45:10,301 INFO L225 Difference]: With dead ends: 640 [2021-10-07 16:45:10,301 INFO L226 Difference]: Without dead ends: 628 [2021-10-07 16:45:10,302 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 6611.2ms TimeCoverageRelationStatistics Valid=649, Invalid=2543, Unknown=0, NotChecked=0, Total=3192 [2021-10-07 16:45:10,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-10-07 16:45:10,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 358. [2021-10-07 16:45:10,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 3.081232492997199) internal successors, (1100), 357 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:10,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 1100 transitions. [2021-10-07 16:45:10,314 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 1100 transitions. Word has length 17 [2021-10-07 16:45:10,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:45:10,315 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 1100 transitions. [2021-10-07 16:45:10,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:10,315 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 1100 transitions. [2021-10-07 16:45:10,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:45:10,317 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:45:10,317 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:45:10,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2021-10-07 16:45:10,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:45:10,531 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:45:10,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:45:10,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1838059436, now seen corresponding path program 27 times [2021-10-07 16:45:10,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:45:10,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1693183692] [2021-10-07 16:45:10,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:45:10,533 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:45:10,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:45:10,534 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:45:10,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2021-10-07 16:45:10,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:45:10,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:45:10,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:45:10,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:45:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:11,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:45:12,027 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:12,028 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:45:12,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1693183692] [2021-10-07 16:45:12,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1693183692] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:45:12,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:45:12,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:45:12,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110395987] [2021-10-07 16:45:12,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:45:12,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:45:12,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:45:12,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:45:12,029 INFO L87 Difference]: Start difference. First operand 358 states and 1100 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:17,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:45:17,275 INFO L93 Difference]: Finished difference Result 634 states and 1830 transitions. [2021-10-07 16:45:17,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-10-07 16:45:17,276 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:45:17,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:45:17,280 INFO L225 Difference]: With dead ends: 634 [2021-10-07 16:45:17,280 INFO L226 Difference]: Without dead ends: 604 [2021-10-07 16:45:17,281 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 821 ImplicationChecksByTransitivity, 4548.9ms TimeCoverageRelationStatistics Valid=420, Invalid=2232, Unknown=0, NotChecked=0, Total=2652 [2021-10-07 16:45:17,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-10-07 16:45:17,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 444. [2021-10-07 16:45:17,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.239277652370203) internal successors, (1435), 443 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:17,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1435 transitions. [2021-10-07 16:45:17,294 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1435 transitions. Word has length 17 [2021-10-07 16:45:17,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:45:17,294 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1435 transitions. [2021-10-07 16:45:17,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:17,295 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1435 transitions. [2021-10-07 16:45:17,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:45:17,296 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:45:17,296 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:45:17,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Forceful destruction successful, exit code 0 [2021-10-07 16:45:17,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:45:17,511 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:45:17,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:45:17,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1605458996, now seen corresponding path program 28 times [2021-10-07 16:45:17,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:45:17,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [419556319] [2021-10-07 16:45:17,512 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:45:17,513 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:45:17,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:45:17,514 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:45:17,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2021-10-07 16:45:17,938 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:45:17,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:45:17,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:45:17,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:45:18,422 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:18,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:45:19,457 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:19,457 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:45:19,457 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [419556319] [2021-10-07 16:45:19,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [419556319] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:45:19,458 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:45:19,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:45:19,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999764164] [2021-10-07 16:45:19,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:45:19,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:45:19,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:45:19,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:45:19,459 INFO L87 Difference]: Start difference. First operand 444 states and 1435 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:25,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:45:25,769 INFO L93 Difference]: Finished difference Result 632 states and 1879 transitions. [2021-10-07 16:45:25,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 16:45:25,770 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:45:25,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:45:25,774 INFO L225 Difference]: With dead ends: 632 [2021-10-07 16:45:25,774 INFO L226 Difference]: Without dead ends: 616 [2021-10-07 16:45:25,775 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 6101.9ms TimeCoverageRelationStatistics Valid=723, Invalid=2033, Unknown=0, NotChecked=0, Total=2756 [2021-10-07 16:45:25,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-10-07 16:45:25,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 442. [2021-10-07 16:45:25,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 3.2154195011337867) internal successors, (1418), 441 states have internal predecessors, (1418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1418 transitions. [2021-10-07 16:45:25,791 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1418 transitions. Word has length 17 [2021-10-07 16:45:25,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:45:25,791 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 1418 transitions. [2021-10-07 16:45:25,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1418 transitions. [2021-10-07 16:45:25,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:45:25,793 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:45:25,793 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:45:25,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2021-10-07 16:45:26,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:45:26,010 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:45:26,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:45:26,010 INFO L82 PathProgramCache]: Analyzing trace with hash 749557696, now seen corresponding path program 29 times [2021-10-07 16:45:26,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:45:26,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1479521825] [2021-10-07 16:45:26,011 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:45:26,012 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:45:26,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:45:26,015 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:45:26,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2021-10-07 16:45:26,422 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:45:26,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:45:26,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:45:26,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:45:26,807 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:26,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:45:27,429 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:27,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:45:27,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1479521825] [2021-10-07 16:45:27,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1479521825] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:45:27,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:45:27,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:45:27,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422424231] [2021-10-07 16:45:27,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:45:27,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:45:27,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:45:27,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:45:27,432 INFO L87 Difference]: Start difference. First operand 442 states and 1418 transitions. Second operand has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:28,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:45:28,803 INFO L93 Difference]: Finished difference Result 487 states and 1500 transitions. [2021-10-07 16:45:28,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 16:45:28,804 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:45:28,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:45:28,807 INFO L225 Difference]: With dead ends: 487 [2021-10-07 16:45:28,807 INFO L226 Difference]: Without dead ends: 474 [2021-10-07 16:45:28,807 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1236.4ms TimeCoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2021-10-07 16:45:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2021-10-07 16:45:28,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 430. [2021-10-07 16:45:28,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 3.1888111888111887) internal successors, (1368), 429 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:28,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 1368 transitions. [2021-10-07 16:45:28,820 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 1368 transitions. Word has length 17 [2021-10-07 16:45:28,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:45:28,821 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 1368 transitions. [2021-10-07 16:45:28,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:28,821 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 1368 transitions. [2021-10-07 16:45:28,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:45:28,822 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:45:28,823 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:45:28,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2021-10-07 16:45:29,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:45:29,036 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:45:29,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:45:29,037 INFO L82 PathProgramCache]: Analyzing trace with hash -13578828, now seen corresponding path program 30 times [2021-10-07 16:45:29,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:45:29,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174289436] [2021-10-07 16:45:29,038 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:45:29,038 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:45:29,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:45:29,040 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:45:29,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2021-10-07 16:45:29,508 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 16:45:29,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:45:29,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:45:29,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:45:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:30,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:45:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:31,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:45:31,461 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174289436] [2021-10-07 16:45:31,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174289436] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:45:31,461 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:45:31,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:45:31,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614935022] [2021-10-07 16:45:31,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:45:31,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:45:31,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:45:31,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:45:31,463 INFO L87 Difference]: Start difference. First operand 430 states and 1368 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:36,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:45:36,058 INFO L93 Difference]: Finished difference Result 563 states and 1679 transitions. [2021-10-07 16:45:36,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-10-07 16:45:36,058 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:45:36,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:45:36,062 INFO L225 Difference]: With dead ends: 563 [2021-10-07 16:45:36,062 INFO L226 Difference]: Without dead ends: 542 [2021-10-07 16:45:36,063 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 4894.5ms TimeCoverageRelationStatistics Valid=359, Invalid=1621, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 16:45:36,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2021-10-07 16:45:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 394. [2021-10-07 16:45:36,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 3.114503816793893) internal successors, (1224), 393 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:36,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1224 transitions. [2021-10-07 16:45:36,073 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1224 transitions. Word has length 17 [2021-10-07 16:45:36,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:45:36,073 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 1224 transitions. [2021-10-07 16:45:36,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:36,074 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1224 transitions. [2021-10-07 16:45:36,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:45:36,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:45:36,075 INFO L512 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:45:36,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2021-10-07 16:45:36,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:45:36,289 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:45:36,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:45:36,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1118152384, now seen corresponding path program 31 times [2021-10-07 16:45:36,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:45:36,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636277287] [2021-10-07 16:45:36,291 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:45:36,291 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:45:36,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:45:36,292 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:45:36,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2021-10-07 16:45:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:45:36,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 16:45:36,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:45:36,814 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:45:36,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:45:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:45:36,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:45:36,967 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636277287] [2021-10-07 16:45:36,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636277287] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:45:36,967 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:45:36,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 10 [2021-10-07 16:45:36,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891335817] [2021-10-07 16:45:36,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:45:36,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:45:36,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:45:36,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:45:36,969 INFO L87 Difference]: Start difference. First operand 394 states and 1224 transitions. Second operand has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:37,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:45:37,516 INFO L93 Difference]: Finished difference Result 414 states and 1265 transitions. [2021-10-07 16:45:37,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 16:45:37,517 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:45:37,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:45:37,519 INFO L225 Difference]: With dead ends: 414 [2021-10-07 16:45:37,519 INFO L226 Difference]: Without dead ends: 410 [2021-10-07 16:45:37,520 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 447.6ms TimeCoverageRelationStatistics Valid=109, Invalid=271, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:45:37,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-07 16:45:37,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 390. [2021-10-07 16:45:37,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 389 states have (on average 3.1105398457583546) internal successors, (1210), 389 states have internal predecessors, (1210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:37,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 1210 transitions. [2021-10-07 16:45:37,529 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 1210 transitions. Word has length 17 [2021-10-07 16:45:37,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:45:37,529 INFO L470 AbstractCegarLoop]: Abstraction has 390 states and 1210 transitions. [2021-10-07 16:45:37,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.3) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 1210 transitions. [2021-10-07 16:45:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:45:37,531 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:45:37,531 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:45:37,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2021-10-07 16:45:37,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:45:37,745 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:45:37,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:45:37,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1974858746, now seen corresponding path program 32 times [2021-10-07 16:45:37,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:45:37,747 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484665993] [2021-10-07 16:45:37,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:45:37,748 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:45:37,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:45:37,749 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:45:37,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2021-10-07 16:45:38,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:45:38,239 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:45:38,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:45:38,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:45:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:38,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:45:39,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:39,831 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:45:39,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484665993] [2021-10-07 16:45:39,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484665993] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:45:39,831 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:45:39,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:45:39,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776258128] [2021-10-07 16:45:39,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:45:39,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:45:39,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:45:39,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:45:39,834 INFO L87 Difference]: Start difference. First operand 390 states and 1210 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:46,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:45:46,253 INFO L93 Difference]: Finished difference Result 646 states and 1853 transitions. [2021-10-07 16:45:46,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:45:46,254 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:45:46,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:45:46,258 INFO L225 Difference]: With dead ends: 646 [2021-10-07 16:45:46,258 INFO L226 Difference]: Without dead ends: 620 [2021-10-07 16:45:46,259 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 863 ImplicationChecksByTransitivity, 6466.4ms TimeCoverageRelationStatistics Valid=649, Invalid=2543, Unknown=0, NotChecked=0, Total=3192 [2021-10-07 16:45:46,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-10-07 16:45:46,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 420. [2021-10-07 16:45:46,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 3.143198090692124) internal successors, (1317), 419 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1317 transitions. [2021-10-07 16:45:46,277 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1317 transitions. Word has length 17 [2021-10-07 16:45:46,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:45:46,278 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 1317 transitions. [2021-10-07 16:45:46,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:46,278 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1317 transitions. [2021-10-07 16:45:46,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:45:46,279 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:45:46,279 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:45:46,292 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2021-10-07 16:45:46,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:45:46,480 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:45:46,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:45:46,481 INFO L82 PathProgramCache]: Analyzing trace with hash 886357006, now seen corresponding path program 33 times [2021-10-07 16:45:46,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:45:46,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868303748] [2021-10-07 16:45:46,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:45:46,482 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:45:46,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:45:46,483 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:45:46,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2021-10-07 16:45:46,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:45:46,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:45:46,990 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:45:46,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:45:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:47,410 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:45:48,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:48,264 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:45:48,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868303748] [2021-10-07 16:45:48,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868303748] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:45:48,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:45:48,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:45:48,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115793459] [2021-10-07 16:45:48,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:45:48,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:45:48,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:45:48,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:45:48,266 INFO L87 Difference]: Start difference. First operand 420 states and 1317 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:53,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:45:53,420 INFO L93 Difference]: Finished difference Result 571 states and 1674 transitions. [2021-10-07 16:45:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-10-07 16:45:53,420 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:45:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:45:53,425 INFO L225 Difference]: With dead ends: 571 [2021-10-07 16:45:53,425 INFO L226 Difference]: Without dead ends: 546 [2021-10-07 16:45:53,426 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 4855.4ms TimeCoverageRelationStatistics Valid=422, Invalid=2548, Unknown=0, NotChecked=0, Total=2970 [2021-10-07 16:45:53,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2021-10-07 16:45:53,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 418. [2021-10-07 16:45:53,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 417 states have (on average 3.13189448441247) internal successors, (1306), 417 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:53,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 1306 transitions. [2021-10-07 16:45:53,436 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 1306 transitions. Word has length 17 [2021-10-07 16:45:53,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:45:53,436 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 1306 transitions. [2021-10-07 16:45:53,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:53,437 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 1306 transitions. [2021-10-07 16:45:53,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:45:53,438 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:45:53,438 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:45:53,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2021-10-07 16:45:53,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:45:53,643 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:45:53,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:45:53,644 INFO L82 PathProgramCache]: Analyzing trace with hash 123220482, now seen corresponding path program 34 times [2021-10-07 16:45:53,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:45:53,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2085966324] [2021-10-07 16:45:53,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:45:53,645 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:45:53,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:45:53,646 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:45:53,647 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2021-10-07 16:45:54,155 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:45:54,155 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:45:54,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:45:54,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:45:54,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:54,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:45:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:55,259 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:45:55,259 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2085966324] [2021-10-07 16:45:55,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2085966324] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:45:55,259 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:45:55,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:45:55,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915300451] [2021-10-07 16:45:55,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:45:55,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:45:55,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:45:55,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:45:55,261 INFO L87 Difference]: Start difference. First operand 418 states and 1306 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:57,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:45:57,308 INFO L93 Difference]: Finished difference Result 459 states and 1375 transitions. [2021-10-07 16:45:57,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 16:45:57,309 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:45:57,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:45:57,312 INFO L225 Difference]: With dead ends: 459 [2021-10-07 16:45:57,312 INFO L226 Difference]: Without dead ends: 448 [2021-10-07 16:45:57,312 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2171.1ms TimeCoverageRelationStatistics Valid=167, Invalid=1023, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 16:45:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2021-10-07 16:45:57,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 420. [2021-10-07 16:45:57,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 419 states have (on average 3.1097852028639617) internal successors, (1303), 419 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:57,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 1303 transitions. [2021-10-07 16:45:57,323 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 1303 transitions. Word has length 17 [2021-10-07 16:45:57,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:45:57,323 INFO L470 AbstractCegarLoop]: Abstraction has 420 states and 1303 transitions. [2021-10-07 16:45:57,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:45:57,323 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 1303 transitions. [2021-10-07 16:45:57,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:45:57,335 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:45:57,335 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:45:57,349 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2021-10-07 16:45:57,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:45:57,549 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:45:57,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:45:57,550 INFO L82 PathProgramCache]: Analyzing trace with hash 868405076, now seen corresponding path program 35 times [2021-10-07 16:45:57,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:45:57,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1382485595] [2021-10-07 16:45:57,551 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:45:57,552 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:45:57,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:45:57,552 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:45:57,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2021-10-07 16:45:58,045 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:45:58,046 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:45:58,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:45:58,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:45:58,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:58,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:45:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:45:59,006 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:45:59,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1382485595] [2021-10-07 16:45:59,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1382485595] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:45:59,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:45:59,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:45:59,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533001472] [2021-10-07 16:45:59,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:45:59,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:45:59,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:45:59,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:45:59,008 INFO L87 Difference]: Start difference. First operand 420 states and 1303 transitions. Second operand has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:00,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:00,251 INFO L93 Difference]: Finished difference Result 467 states and 1420 transitions. [2021-10-07 16:46:00,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 16:46:00,252 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:46:00,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:00,255 INFO L225 Difference]: With dead ends: 467 [2021-10-07 16:46:00,255 INFO L226 Difference]: Without dead ends: 458 [2021-10-07 16:46:00,255 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1212.0ms TimeCoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2021-10-07 16:46:00,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-10-07 16:46:00,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 432. [2021-10-07 16:46:00,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.1067285382830625) internal successors, (1339), 431 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:00,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1339 transitions. [2021-10-07 16:46:00,263 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1339 transitions. Word has length 17 [2021-10-07 16:46:00,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:00,264 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1339 transitions. [2021-10-07 16:46:00,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:00,264 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1339 transitions. [2021-10-07 16:46:00,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:46:00,265 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:00,265 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:00,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Forceful destruction successful, exit code 0 [2021-10-07 16:46:00,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:00,471 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:00,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:00,472 INFO L82 PathProgramCache]: Analyzing trace with hash 105268552, now seen corresponding path program 36 times [2021-10-07 16:46:00,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:00,473 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647850291] [2021-10-07 16:46:00,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:46:00,473 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:00,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:00,475 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:00,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2021-10-07 16:46:01,020 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2021-10-07 16:46:01,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:01,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-07 16:46:01,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:01,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:02,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:02,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647850291] [2021-10-07 16:46:02,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647850291] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:02,429 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:02,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-07 16:46:02,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832136239] [2021-10-07 16:46:02,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-07 16:46:02,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:02,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-07 16:46:02,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-10-07 16:46:02,431 INFO L87 Difference]: Start difference. First operand 432 states and 1339 transitions. Second operand has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:08,034 INFO L93 Difference]: Finished difference Result 855 states and 2671 transitions. [2021-10-07 16:46:08,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-07 16:46:08,035 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:46:08,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:08,041 INFO L225 Difference]: With dead ends: 855 [2021-10-07 16:46:08,041 INFO L226 Difference]: Without dead ends: 834 [2021-10-07 16:46:08,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 817 ImplicationChecksByTransitivity, 5398.0ms TimeCoverageRelationStatistics Valid=426, Invalid=2544, Unknown=0, NotChecked=0, Total=2970 [2021-10-07 16:46:08,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2021-10-07 16:46:08,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 432. [2021-10-07 16:46:08,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.102088167053364) internal successors, (1337), 431 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:08,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1337 transitions. [2021-10-07 16:46:08,052 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1337 transitions. Word has length 17 [2021-10-07 16:46:08,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:08,052 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1337 transitions. [2021-10-07 16:46:08,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 18 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:08,052 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1337 transitions. [2021-10-07 16:46:08,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:46:08,054 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:08,054 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:08,069 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2021-10-07 16:46:08,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:08,268 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:08,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:08,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2025147552, now seen corresponding path program 37 times [2021-10-07 16:46:08,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:08,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605022141] [2021-10-07 16:46:08,270 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:46:08,270 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:08,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:08,271 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:08,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2021-10-07 16:46:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:46:08,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:46:08,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:09,389 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:09,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:10,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:10,089 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605022141] [2021-10-07 16:46:10,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605022141] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:10,089 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:10,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:46:10,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16274765] [2021-10-07 16:46:10,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:46:10,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:10,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:46:10,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:46:10,090 INFO L87 Difference]: Start difference. First operand 432 states and 1337 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:11,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:11,586 INFO L93 Difference]: Finished difference Result 571 states and 1778 transitions. [2021-10-07 16:46:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-07 16:46:11,586 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:46:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:11,589 INFO L225 Difference]: With dead ends: 571 [2021-10-07 16:46:11,590 INFO L226 Difference]: Without dead ends: 558 [2021-10-07 16:46:11,590 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1796.1ms TimeCoverageRelationStatistics Valid=107, Invalid=595, Unknown=0, NotChecked=0, Total=702 [2021-10-07 16:46:11,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2021-10-07 16:46:11,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 432. [2021-10-07 16:46:11,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 431 states have (on average 3.097447795823666) internal successors, (1335), 431 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:11,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 1335 transitions. [2021-10-07 16:46:11,597 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 1335 transitions. Word has length 17 [2021-10-07 16:46:11,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:11,597 INFO L470 AbstractCegarLoop]: Abstraction has 432 states and 1335 transitions. [2021-10-07 16:46:11,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:11,598 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 1335 transitions. [2021-10-07 16:46:11,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:46:11,599 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:11,599 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:11,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2021-10-07 16:46:11,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:11,802 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:11,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:11,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1784450246, now seen corresponding path program 38 times [2021-10-07 16:46:11,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:11,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105663491] [2021-10-07 16:46:11,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:46:11,804 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:11,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:11,805 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:11,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2021-10-07 16:46:12,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:46:12,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:12,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-07 16:46:12,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:12,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:13,820 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:13,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105663491] [2021-10-07 16:46:13,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105663491] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:13,820 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:13,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:46:13,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237323793] [2021-10-07 16:46:13,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:46:13,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:13,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:46:13,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:46:13,822 INFO L87 Difference]: Start difference. First operand 432 states and 1335 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:22,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:22,392 INFO L93 Difference]: Finished difference Result 862 states and 2464 transitions. [2021-10-07 16:46:22,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2021-10-07 16:46:22,393 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:46:22,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:22,398 INFO L225 Difference]: With dead ends: 862 [2021-10-07 16:46:22,398 INFO L226 Difference]: Without dead ends: 840 [2021-10-07 16:46:22,399 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1293 ImplicationChecksByTransitivity, 7842.6ms TimeCoverageRelationStatistics Valid=921, Invalid=3635, Unknown=0, NotChecked=0, Total=4556 [2021-10-07 16:46:22,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2021-10-07 16:46:22,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 526. [2021-10-07 16:46:22,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 526 states, 525 states have (on average 3.196190476190476) internal successors, (1678), 525 states have internal predecessors, (1678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 526 states to 526 states and 1678 transitions. [2021-10-07 16:46:22,414 INFO L78 Accepts]: Start accepts. Automaton has 526 states and 1678 transitions. Word has length 17 [2021-10-07 16:46:22,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:22,414 INFO L470 AbstractCegarLoop]: Abstraction has 526 states and 1678 transitions. [2021-10-07 16:46:22,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:22,414 INFO L276 IsEmpty]: Start isEmpty. Operand 526 states and 1678 transitions. [2021-10-07 16:46:22,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:46:22,415 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:22,416 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:22,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2021-10-07 16:46:22,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:22,616 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:22,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:22,617 INFO L82 PathProgramCache]: Analyzing trace with hash -2017050686, now seen corresponding path program 39 times [2021-10-07 16:46:22,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:22,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437811654] [2021-10-07 16:46:22,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:46:22,618 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:22,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:22,620 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:22,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2021-10-07 16:46:23,200 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:46:23,200 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:23,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:46:23,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:23,503 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:46:23,504 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-07 16:46:23,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:23,872 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437811654] [2021-10-07 16:46:23,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437811654] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:23,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:23,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:46:23,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469923080] [2021-10-07 16:46:23,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 16:46:23,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:23,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 16:46:23,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:46:23,874 INFO L87 Difference]: Start difference. First operand 526 states and 1678 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:24,117 INFO L93 Difference]: Finished difference Result 577 states and 1806 transitions. [2021-10-07 16:46:24,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:46:24,122 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:46:24,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:24,126 INFO L225 Difference]: With dead ends: 577 [2021-10-07 16:46:24,126 INFO L226 Difference]: Without dead ends: 556 [2021-10-07 16:46:24,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 268.6ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:46:24,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2021-10-07 16:46:24,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 404. [2021-10-07 16:46:24,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 2.826302729528536) internal successors, (1139), 403 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:24,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1139 transitions. [2021-10-07 16:46:24,136 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1139 transitions. Word has length 17 [2021-10-07 16:46:24,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:24,137 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 1139 transitions. [2021-10-07 16:46:24,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:24,137 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1139 transitions. [2021-10-07 16:46:24,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 16:46:24,138 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:24,138 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:24,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2021-10-07 16:46:24,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:24,343 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:24,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:24,343 INFO L82 PathProgramCache]: Analyzing trace with hash 658878786, now seen corresponding path program 40 times [2021-10-07 16:46:24,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:24,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1441366606] [2021-10-07 16:46:24,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:46:24,345 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:24,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:24,346 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:24,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2021-10-07 16:46:24,889 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:46:24,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:24,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-07 16:46:24,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:25,325 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:25,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:26,031 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:26,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:26,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1441366606] [2021-10-07 16:46:26,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1441366606] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:26,032 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:26,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18 [2021-10-07 16:46:26,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639494569] [2021-10-07 16:46:26,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-07 16:46:26,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:26,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-07 16:46:26,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2021-10-07 16:46:26,033 INFO L87 Difference]: Start difference. First operand 404 states and 1139 transitions. Second operand has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:26,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:26,990 INFO L93 Difference]: Finished difference Result 449 states and 1243 transitions. [2021-10-07 16:46:26,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-07 16:46:26,991 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-07 16:46:26,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:26,993 INFO L225 Difference]: With dead ends: 449 [2021-10-07 16:46:26,993 INFO L226 Difference]: Without dead ends: 438 [2021-10-07 16:46:26,993 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1246.7ms TimeCoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2021-10-07 16:46:26,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2021-10-07 16:46:27,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 404. [2021-10-07 16:46:27,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 403 states have (on average 2.8213399503722085) internal successors, (1137), 403 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:27,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 1137 transitions. [2021-10-07 16:46:27,001 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 1137 transitions. Word has length 17 [2021-10-07 16:46:27,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:27,002 INFO L470 AbstractCegarLoop]: Abstraction has 404 states and 1137 transitions. [2021-10-07 16:46:27,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 19 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:27,002 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 1137 transitions. [2021-10-07 16:46:27,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:46:27,003 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:27,003 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:27,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2021-10-07 16:46:27,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:27,204 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:27,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:27,205 INFO L82 PathProgramCache]: Analyzing trace with hash -620745253, now seen corresponding path program 41 times [2021-10-07 16:46:27,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:27,205 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1357179971] [2021-10-07 16:46:27,206 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:46:27,206 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:27,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:27,208 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:27,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2021-10-07 16:46:27,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:46:27,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:27,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:46:27,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:27,911 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:27,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:28,067 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:28,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1357179971] [2021-10-07 16:46:28,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1357179971] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:28,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:28,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-10-07 16:46:28,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093743375] [2021-10-07 16:46:28,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:46:28,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:28,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:46:28,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:46:28,069 INFO L87 Difference]: Start difference. First operand 404 states and 1137 transitions. Second operand has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:28,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:28,463 INFO L93 Difference]: Finished difference Result 512 states and 1360 transitions. [2021-10-07 16:46:28,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-07 16:46:28,464 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:46:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:28,466 INFO L225 Difference]: With dead ends: 512 [2021-10-07 16:46:28,466 INFO L226 Difference]: Without dead ends: 512 [2021-10-07 16:46:28,466 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 340.5ms TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:46:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-10-07 16:46:28,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 400. [2021-10-07 16:46:28,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 2.8095238095238093) internal successors, (1121), 399 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:28,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1121 transitions. [2021-10-07 16:46:28,474 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1121 transitions. Word has length 18 [2021-10-07 16:46:28,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:28,474 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 1121 transitions. [2021-10-07 16:46:28,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.8333333333333333) internal successors, (22), 12 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:28,475 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1121 transitions. [2021-10-07 16:46:28,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:46:28,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:28,476 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:28,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2021-10-07 16:46:28,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:28,676 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:28,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:28,677 INFO L82 PathProgramCache]: Analyzing trace with hash -446780471, now seen corresponding path program 42 times [2021-10-07 16:46:28,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:28,678 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [151077486] [2021-10-07 16:46:28,678 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:46:28,679 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:28,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:28,680 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:28,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2021-10-07 16:46:29,304 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:46:29,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:29,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:46:29,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:29,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:29,443 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:29,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:29,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [151077486] [2021-10-07 16:46:29,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [151077486] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:29,645 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:29,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-07 16:46:29,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375960728] [2021-10-07 16:46:29,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 16:46:29,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:29,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 16:46:29,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:46:29,647 INFO L87 Difference]: Start difference. First operand 400 states and 1121 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:30,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:30,774 INFO L93 Difference]: Finished difference Result 572 states and 1478 transitions. [2021-10-07 16:46:30,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:46:30,775 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:46:30,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:30,777 INFO L225 Difference]: With dead ends: 572 [2021-10-07 16:46:30,777 INFO L226 Difference]: Without dead ends: 572 [2021-10-07 16:46:30,777 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 980.9ms TimeCoverageRelationStatistics Valid=141, Invalid=509, Unknown=0, NotChecked=0, Total=650 [2021-10-07 16:46:30,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2021-10-07 16:46:30,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 400. [2021-10-07 16:46:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 399 states have (on average 2.8095238095238093) internal successors, (1121), 399 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:30,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 1121 transitions. [2021-10-07 16:46:30,786 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 1121 transitions. Word has length 18 [2021-10-07 16:46:30,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:30,786 INFO L470 AbstractCegarLoop]: Abstraction has 400 states and 1121 transitions. [2021-10-07 16:46:30,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:30,786 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 1121 transitions. [2021-10-07 16:46:30,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:46:30,787 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:30,787 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:30,798 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (60)] Ended with exit code 0 [2021-10-07 16:46:30,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:30,988 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:30,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:30,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1867039915, now seen corresponding path program 43 times [2021-10-07 16:46:30,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:30,990 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1903811594] [2021-10-07 16:46:30,990 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:46:30,990 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:30,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:30,992 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:30,992 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2021-10-07 16:46:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:46:31,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:46:31,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:31,707 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:31,980 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:31,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1903811594] [2021-10-07 16:46:31,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1903811594] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:31,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:31,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-10-07 16:46:31,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962934158] [2021-10-07 16:46:31,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 16:46:31,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:31,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 16:46:31,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2021-10-07 16:46:31,982 INFO L87 Difference]: Start difference. First operand 400 states and 1121 transitions. Second operand has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:33,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:33,519 INFO L93 Difference]: Finished difference Result 598 states and 1493 transitions. [2021-10-07 16:46:33,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-10-07 16:46:33,520 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:46:33,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:33,521 INFO L225 Difference]: With dead ends: 598 [2021-10-07 16:46:33,521 INFO L226 Difference]: Without dead ends: 598 [2021-10-07 16:46:33,521 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1125.4ms TimeCoverageRelationStatistics Valid=217, Invalid=1043, Unknown=0, NotChecked=0, Total=1260 [2021-10-07 16:46:33,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2021-10-07 16:46:33,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 384. [2021-10-07 16:46:33,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 2.77023498694517) internal successors, (1061), 383 states have internal predecessors, (1061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:33,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1061 transitions. [2021-10-07 16:46:33,529 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1061 transitions. Word has length 18 [2021-10-07 16:46:33,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:33,529 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 1061 transitions. [2021-10-07 16:46:33,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.8666666666666667) internal successors, (28), 15 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:33,529 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1061 transitions. [2021-10-07 16:46:33,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:46:33,530 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:33,530 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:33,542 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2021-10-07 16:46:33,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:33,731 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:33,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:33,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1430017607, now seen corresponding path program 44 times [2021-10-07 16:46:33,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:33,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060467217] [2021-10-07 16:46:33,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:46:33,733 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:33,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:33,734 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:33,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2021-10-07 16:46:34,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:46:34,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:34,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:46:34,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:34,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:34,715 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:34,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060467217] [2021-10-07 16:46:34,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060467217] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:34,716 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:34,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-07 16:46:34,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444711431] [2021-10-07 16:46:34,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 16:46:34,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:34,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 16:46:34,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:46:34,717 INFO L87 Difference]: Start difference. First operand 384 states and 1061 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:36,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:36,184 INFO L93 Difference]: Finished difference Result 594 states and 1542 transitions. [2021-10-07 16:46:36,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 16:46:36,185 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:46:36,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:36,186 INFO L225 Difference]: With dead ends: 594 [2021-10-07 16:46:36,186 INFO L226 Difference]: Without dead ends: 594 [2021-10-07 16:46:36,186 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 1153.2ms TimeCoverageRelationStatistics Valid=212, Invalid=718, Unknown=0, NotChecked=0, Total=930 [2021-10-07 16:46:36,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2021-10-07 16:46:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 394. [2021-10-07 16:46:36,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 393 states have (on average 2.7888040712468194) internal successors, (1096), 393 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:36,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 1096 transitions. [2021-10-07 16:46:36,194 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 1096 transitions. Word has length 18 [2021-10-07 16:46:36,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:36,195 INFO L470 AbstractCegarLoop]: Abstraction has 394 states and 1096 transitions. [2021-10-07 16:46:36,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:36,195 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 1096 transitions. [2021-10-07 16:46:36,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:46:36,196 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:36,196 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:36,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2021-10-07 16:46:36,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:36,397 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:36,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:36,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1845597751, now seen corresponding path program 45 times [2021-10-07 16:46:36,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:36,398 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [56031376] [2021-10-07 16:46:36,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:46:36,399 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:36,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:36,400 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:36,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Waiting until timeout for monitored process [2021-10-07 16:46:37,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:46:37,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:37,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:46:37,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:46:37,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:37,497 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-07 16:46:37,497 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:37,497 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [56031376] [2021-10-07 16:46:37,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [56031376] provided 1 perfect and 1 imperfect interpolant sequences [2021-10-07 16:46:37,497 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-07 16:46:37,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-10-07 16:46:37,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531438098] [2021-10-07 16:46:37,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 16:46:37,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:37,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 16:46:37,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:46:37,499 INFO L87 Difference]: Start difference. First operand 394 states and 1096 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:37,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:37,593 INFO L93 Difference]: Finished difference Result 415 states and 1136 transitions. [2021-10-07 16:46:37,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:46:37,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:46:37,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:37,594 INFO L225 Difference]: With dead ends: 415 [2021-10-07 16:46:37,594 INFO L226 Difference]: Without dead ends: 372 [2021-10-07 16:46:37,594 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 193.0ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:46:37,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2021-10-07 16:46:37,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 252. [2021-10-07 16:46:37,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 2.49800796812749) internal successors, (627), 251 states have internal predecessors, (627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:37,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 627 transitions. [2021-10-07 16:46:37,600 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 627 transitions. Word has length 18 [2021-10-07 16:46:37,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:37,600 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 627 transitions. [2021-10-07 16:46:37,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:37,600 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 627 transitions. [2021-10-07 16:46:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:46:37,601 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:37,601 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:37,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (63)] Ended with exit code 0 [2021-10-07 16:46:37,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:37,802 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:37,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1162012083, now seen corresponding path program 46 times [2021-10-07 16:46:37,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:37,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2121535733] [2021-10-07 16:46:37,804 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:46:37,804 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:37,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:37,805 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:37,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2021-10-07 16:46:38,387 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:46:38,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:38,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:46:38,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:38,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:38,717 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:38,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:38,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2121535733] [2021-10-07 16:46:38,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2121535733] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:38,718 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:38,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-10-07 16:46:38,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520192752] [2021-10-07 16:46:38,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 16:46:38,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:38,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 16:46:38,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:46:38,719 INFO L87 Difference]: Start difference. First operand 252 states and 627 transitions. Second operand has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:39,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:39,934 INFO L93 Difference]: Finished difference Result 406 states and 979 transitions. [2021-10-07 16:46:39,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 16:46:39,935 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:46:39,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:39,936 INFO L225 Difference]: With dead ends: 406 [2021-10-07 16:46:39,936 INFO L226 Difference]: Without dead ends: 398 [2021-10-07 16:46:39,936 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1042.9ms TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2021-10-07 16:46:39,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-10-07 16:46:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 250. [2021-10-07 16:46:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 249 states have (on average 2.497991967871486) internal successors, (622), 249 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:39,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 622 transitions. [2021-10-07 16:46:39,941 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 622 transitions. Word has length 18 [2021-10-07 16:46:39,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:39,941 INFO L470 AbstractCegarLoop]: Abstraction has 250 states and 622 transitions. [2021-10-07 16:46:39,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.076923076923077) internal successors, (27), 13 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:39,941 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 622 transitions. [2021-10-07 16:46:39,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:46:39,942 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:39,942 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:39,955 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2021-10-07 16:46:40,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:40,144 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:40,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:40,145 INFO L82 PathProgramCache]: Analyzing trace with hash 57658325, now seen corresponding path program 47 times [2021-10-07 16:46:40,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:40,145 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145709056] [2021-10-07 16:46:40,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:46:40,146 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:40,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:40,148 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:40,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2021-10-07 16:46:40,755 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:46:40,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:40,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:46:40,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:40,838 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:40,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:41,070 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:41,070 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:41,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145709056] [2021-10-07 16:46:41,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145709056] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:41,071 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:41,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9] total 13 [2021-10-07 16:46:41,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021140762] [2021-10-07 16:46:41,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 16:46:41,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:41,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 16:46:41,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:46:41,073 INFO L87 Difference]: Start difference. First operand 250 states and 622 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:42,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:42,409 INFO L93 Difference]: Finished difference Result 424 states and 1015 transitions. [2021-10-07 16:46:42,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 16:46:42,410 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:46:42,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:42,411 INFO L225 Difference]: With dead ends: 424 [2021-10-07 16:46:42,411 INFO L226 Difference]: Without dead ends: 424 [2021-10-07 16:46:42,411 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1168.0ms TimeCoverageRelationStatistics Valid=230, Invalid=826, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 16:46:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2021-10-07 16:46:42,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 296. [2021-10-07 16:46:42,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 2.511864406779661) internal successors, (741), 295 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:42,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 741 transitions. [2021-10-07 16:46:42,417 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 741 transitions. Word has length 18 [2021-10-07 16:46:42,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:42,418 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 741 transitions. [2021-10-07 16:46:42,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:42,418 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 741 transitions. [2021-10-07 16:46:42,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:46:42,419 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:42,419 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:42,432 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2021-10-07 16:46:42,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:42,620 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:42,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:42,621 INFO L82 PathProgramCache]: Analyzing trace with hash -2012883997, now seen corresponding path program 48 times [2021-10-07 16:46:42,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:42,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748447614] [2021-10-07 16:46:42,622 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:46:42,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:42,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:42,623 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:42,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2021-10-07 16:46:43,272 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:46:43,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:43,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:46:43,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:43,367 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:43,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:43,573 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:43,573 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:43,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748447614] [2021-10-07 16:46:43,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748447614] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:43,574 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:43,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 13 [2021-10-07 16:46:43,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393888435] [2021-10-07 16:46:43,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 16:46:43,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:43,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 16:46:43,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:46:43,575 INFO L87 Difference]: Start difference. First operand 296 states and 741 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:44,487 INFO L93 Difference]: Finished difference Result 418 states and 1011 transitions. [2021-10-07 16:46:44,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 16:46:44,488 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:46:44,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:44,490 INFO L225 Difference]: With dead ends: 418 [2021-10-07 16:46:44,490 INFO L226 Difference]: Without dead ends: 410 [2021-10-07 16:46:44,490 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 773.4ms TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-10-07 16:46:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-10-07 16:46:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 290. [2021-10-07 16:46:44,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.491349480968858) internal successors, (720), 289 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:44,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 720 transitions. [2021-10-07 16:46:44,495 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 720 transitions. Word has length 18 [2021-10-07 16:46:44,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:44,496 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 720 transitions. [2021-10-07 16:46:44,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:44,496 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 720 transitions. [2021-10-07 16:46:44,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:46:44,496 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:44,497 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:44,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (66)] Ended with exit code 0 [2021-10-07 16:46:44,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:44,699 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:44,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:44,700 INFO L82 PathProgramCache]: Analyzing trace with hash 178889565, now seen corresponding path program 49 times [2021-10-07 16:46:44,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:44,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1956386977] [2021-10-07 16:46:44,701 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:46:44,701 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:44,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:44,702 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:44,704 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2021-10-07 16:46:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:46:45,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:46:45,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:45,457 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:45,458 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:45,666 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:45,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:45,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1956386977] [2021-10-07 16:46:45,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1956386977] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:45,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:45,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-07 16:46:45,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855368613] [2021-10-07 16:46:45,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 16:46:45,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:45,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 16:46:45,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:46:45,668 INFO L87 Difference]: Start difference. First operand 290 states and 720 transitions. Second operand has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:46,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:46,496 INFO L93 Difference]: Finished difference Result 366 states and 890 transitions. [2021-10-07 16:46:46,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 16:46:46,496 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:46:46,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:46,497 INFO L225 Difference]: With dead ends: 366 [2021-10-07 16:46:46,497 INFO L226 Difference]: Without dead ends: 366 [2021-10-07 16:46:46,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 709.6ms TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2021-10-07 16:46:46,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-10-07 16:46:46,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 294. [2021-10-07 16:46:46,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 2.5119453924914676) internal successors, (736), 293 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:46,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 736 transitions. [2021-10-07 16:46:46,503 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 736 transitions. Word has length 18 [2021-10-07 16:46:46,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:46,503 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 736 transitions. [2021-10-07 16:46:46,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.8461538461538463) internal successors, (24), 13 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:46,503 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 736 transitions. [2021-10-07 16:46:46,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-07 16:46:46,504 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:46,504 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:46,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (67)] Forceful destruction successful, exit code 0 [2021-10-07 16:46:46,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:46,705 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:46,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:46,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1768978997, now seen corresponding path program 50 times [2021-10-07 16:46:46,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:46,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1660726545] [2021-10-07 16:46:46,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:46:46,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:46,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:46,709 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:46,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2021-10-07 16:46:47,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:46:47,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:47,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:46:47,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:47,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:47,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:47,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1660726545] [2021-10-07 16:46:47,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1660726545] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:47,632 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:47,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-10-07 16:46:47,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201966266] [2021-10-07 16:46:47,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 16:46:47,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:47,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 16:46:47,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-10-07 16:46:47,634 INFO L87 Difference]: Start difference. First operand 294 states and 736 transitions. Second operand has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:47,946 INFO L93 Difference]: Finished difference Result 378 states and 940 transitions. [2021-10-07 16:46:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 16:46:47,947 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-07 16:46:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:47,948 INFO L225 Difference]: With dead ends: 378 [2021-10-07 16:46:47,948 INFO L226 Difference]: Without dead ends: 378 [2021-10-07 16:46:47,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 316.2ms TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:46:47,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2021-10-07 16:46:47,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 286. [2021-10-07 16:46:47,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 285 states have (on average 2.4842105263157896) internal successors, (708), 285 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:47,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 708 transitions. [2021-10-07 16:46:47,955 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 708 transitions. Word has length 18 [2021-10-07 16:46:47,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:47,956 INFO L470 AbstractCegarLoop]: Abstraction has 286 states and 708 transitions. [2021-10-07 16:46:47,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.9166666666666667) internal successors, (23), 12 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:47,956 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 708 transitions. [2021-10-07 16:46:47,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:46:47,956 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:47,957 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:47,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2021-10-07 16:46:48,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:48,157 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:48,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:48,158 INFO L82 PathProgramCache]: Analyzing trace with hash -113664492, now seen corresponding path program 51 times [2021-10-07 16:46:48,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:48,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793766828] [2021-10-07 16:46:48,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:46:48,160 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:48,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:48,161 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:48,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2021-10-07 16:46:48,833 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-10-07 16:46:48,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:48,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:46:48,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 16:46:49,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:49,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 16:46:49,568 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:49,568 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793766828] [2021-10-07 16:46:49,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793766828] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:49,568 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:49,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:46:49,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023466461] [2021-10-07 16:46:49,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 16:46:49,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:49,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 16:46:49,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:46:49,570 INFO L87 Difference]: Start difference. First operand 286 states and 708 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:49,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:46:49,742 INFO L93 Difference]: Finished difference Result 321 states and 782 transitions. [2021-10-07 16:46:49,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:46:49,743 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:46:49,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:46:49,743 INFO L225 Difference]: With dead ends: 321 [2021-10-07 16:46:49,743 INFO L226 Difference]: Without dead ends: 140 [2021-10-07 16:46:49,743 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 255.4ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:46:49,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-07 16:46:49,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 90. [2021-10-07 16:46:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 89 states have (on average 2.0898876404494384) internal successors, (186), 89 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:49,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 186 transitions. [2021-10-07 16:46:49,745 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 186 transitions. Word has length 19 [2021-10-07 16:46:49,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:46:49,746 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 186 transitions. [2021-10-07 16:46:49,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:46:49,746 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 186 transitions. [2021-10-07 16:46:49,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:46:49,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:46:49,746 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:46:49,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (69)] Forceful destruction successful, exit code 0 [2021-10-07 16:46:49,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:46:49,948 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:46:49,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:46:49,949 INFO L82 PathProgramCache]: Analyzing trace with hash -346264932, now seen corresponding path program 52 times [2021-10-07 16:46:49,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:46:49,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286152990] [2021-10-07 16:46:49,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:46:49,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:46:49,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:46:49,951 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:46:49,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2021-10-07 16:46:50,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:46:50,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:46:50,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:46:50,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:46:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:51,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:46:52,631 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:46:52,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:46:52,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286152990] [2021-10-07 16:46:52,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286152990] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:46:52,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:46:52,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 16:46:52,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018266764] [2021-10-07 16:46:52,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 16:46:52,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:46:52,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 16:46:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=428, Unknown=0, NotChecked=0, Total=552 [2021-10-07 16:46:52,632 INFO L87 Difference]: Start difference. First operand 90 states and 186 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:02,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:47:02,251 INFO L93 Difference]: Finished difference Result 218 states and 419 transitions. [2021-10-07 16:47:02,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-07 16:47:02,252 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:47:02,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:47:02,253 INFO L225 Difference]: With dead ends: 218 [2021-10-07 16:47:02,253 INFO L226 Difference]: Without dead ends: 206 [2021-10-07 16:47:02,254 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1392 ImplicationChecksByTransitivity, 9698.7ms TimeCoverageRelationStatistics Valid=1107, Invalid=3723, Unknown=0, NotChecked=0, Total=4830 [2021-10-07 16:47:02,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-10-07 16:47:02,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 102. [2021-10-07 16:47:02,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.108910891089109) internal successors, (213), 101 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:02,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 213 transitions. [2021-10-07 16:47:02,257 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 213 transitions. Word has length 19 [2021-10-07 16:47:02,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:47:02,257 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 213 transitions. [2021-10-07 16:47:02,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:02,258 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 213 transitions. [2021-10-07 16:47:02,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:47:02,258 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:47:02,258 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:47:02,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (70)] Ended with exit code 0 [2021-10-07 16:47:02,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:47:02,459 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:47:02,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:47:02,460 INFO L82 PathProgramCache]: Analyzing trace with hash -1980226596, now seen corresponding path program 53 times [2021-10-07 16:47:02,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:47:02,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817944967] [2021-10-07 16:47:02,461 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:47:02,461 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:47:02,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:47:02,462 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:47:02,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2021-10-07 16:47:03,150 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-10-07 16:47:03,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:47:03,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 16:47:03,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:47:03,581 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:03,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:47:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:04,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:47:04,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817944967] [2021-10-07 16:47:04,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817944967] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:47:04,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:47:04,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:47:04,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212449440] [2021-10-07 16:47:04,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:47:04,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:47:04,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:47:04,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=446, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:47:04,416 INFO L87 Difference]: Start difference. First operand 102 states and 213 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:47:07,575 INFO L93 Difference]: Finished difference Result 165 states and 314 transitions. [2021-10-07 16:47:07,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-10-07 16:47:07,576 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:47:07,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:47:07,576 INFO L225 Difference]: With dead ends: 165 [2021-10-07 16:47:07,576 INFO L226 Difference]: Without dead ends: 154 [2021-10-07 16:47:07,577 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 2801.9ms TimeCoverageRelationStatistics Valid=197, Invalid=1525, Unknown=0, NotChecked=0, Total=1722 [2021-10-07 16:47:07,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2021-10-07 16:47:07,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 106. [2021-10-07 16:47:07,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.123809523809524) internal successors, (223), 105 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:07,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 223 transitions. [2021-10-07 16:47:07,580 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 223 transitions. Word has length 19 [2021-10-07 16:47:07,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:47:07,580 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 223 transitions. [2021-10-07 16:47:07,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:07,581 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 223 transitions. [2021-10-07 16:47:07,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:47:07,581 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:47:07,581 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:47:07,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2021-10-07 16:47:07,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:47:07,782 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:47:07,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:47:07,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1113640814, now seen corresponding path program 54 times [2021-10-07 16:47:07,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:47:07,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286227676] [2021-10-07 16:47:07,784 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:47:07,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:47:07,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:47:07,785 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:47:07,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Waiting until timeout for monitored process [2021-10-07 16:47:08,500 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2021-10-07 16:47:08,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:47:08,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:47:08,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:47:08,996 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:08,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:47:10,143 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:10,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:47:10,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286227676] [2021-10-07 16:47:10,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286227676] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:47:10,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:47:10,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:47:10,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167207961] [2021-10-07 16:47:10,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:47:10,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:47:10,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:47:10,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:47:10,145 INFO L87 Difference]: Start difference. First operand 106 states and 223 transitions. Second operand has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:13,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:47:13,829 INFO L93 Difference]: Finished difference Result 198 states and 399 transitions. [2021-10-07 16:47:13,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 16:47:13,829 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:47:13,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:47:13,830 INFO L225 Difference]: With dead ends: 198 [2021-10-07 16:47:13,830 INFO L226 Difference]: Without dead ends: 176 [2021-10-07 16:47:13,830 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 597 ImplicationChecksByTransitivity, 3893.4ms TimeCoverageRelationStatistics Valid=373, Invalid=1883, Unknown=0, NotChecked=0, Total=2256 [2021-10-07 16:47:13,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-10-07 16:47:13,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 130. [2021-10-07 16:47:13,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 2.1627906976744184) internal successors, (279), 129 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:13,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 279 transitions. [2021-10-07 16:47:13,833 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 279 transitions. Word has length 19 [2021-10-07 16:47:13,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:47:13,833 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 279 transitions. [2021-10-07 16:47:13,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 22 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:13,833 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 279 transitions. [2021-10-07 16:47:13,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:47:13,834 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:47:13,834 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:47:13,845 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (72)] Ended with exit code 0 [2021-10-07 16:47:14,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:47:14,035 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:47:14,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:47:14,036 INFO L82 PathProgramCache]: Analyzing trace with hash -852707546, now seen corresponding path program 55 times [2021-10-07 16:47:14,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:47:14,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573095316] [2021-10-07 16:47:14,037 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:47:14,037 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:47:14,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:47:14,038 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:47:14,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2021-10-07 16:47:14,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:47:14,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-07 16:47:14,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:47:15,249 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:15,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:47:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:16,619 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:47:16,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573095316] [2021-10-07 16:47:16,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573095316] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:47:16,620 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:47:16,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 16:47:16,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666804251] [2021-10-07 16:47:16,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 16:47:16,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:47:16,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 16:47:16,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2021-10-07 16:47:16,622 INFO L87 Difference]: Start difference. First operand 130 states and 279 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:20,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:47:20,476 INFO L93 Difference]: Finished difference Result 201 states and 401 transitions. [2021-10-07 16:47:20,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-10-07 16:47:20,476 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:47:20,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:47:20,477 INFO L225 Difference]: With dead ends: 201 [2021-10-07 16:47:20,477 INFO L226 Difference]: Without dead ends: 188 [2021-10-07 16:47:20,477 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 4327.7ms TimeCoverageRelationStatistics Valid=454, Invalid=1708, Unknown=0, NotChecked=0, Total=2162 [2021-10-07 16:47:20,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-07 16:47:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 140. [2021-10-07 16:47:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.143884892086331) internal successors, (298), 139 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:20,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 298 transitions. [2021-10-07 16:47:20,480 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 298 transitions. Word has length 19 [2021-10-07 16:47:20,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:47:20,480 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 298 transitions. [2021-10-07 16:47:20,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:20,480 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 298 transitions. [2021-10-07 16:47:20,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:47:20,481 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:47:20,481 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:47:20,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2021-10-07 16:47:20,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:47:20,682 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:47:20,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:47:20,682 INFO L82 PathProgramCache]: Analyzing trace with hash -1615839844, now seen corresponding path program 56 times [2021-10-07 16:47:20,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:47:20,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132710601] [2021-10-07 16:47:20,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:47:20,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:47:20,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:47:20,685 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:47:20,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Waiting until timeout for monitored process [2021-10-07 16:47:21,435 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:47:21,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:47:21,439 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-07 16:47:21,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:47:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:22,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:47:23,880 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:23,880 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:47:23,880 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132710601] [2021-10-07 16:47:23,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132710601] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:47:23,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:47:23,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22 [2021-10-07 16:47:23,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111599866] [2021-10-07 16:47:23,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-07 16:47:23,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:47:23,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-07 16:47:23,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2021-10-07 16:47:23,881 INFO L87 Difference]: Start difference. First operand 140 states and 298 transitions. Second operand has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:30,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:47:30,297 INFO L93 Difference]: Finished difference Result 218 states and 428 transitions. [2021-10-07 16:47:30,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-07 16:47:30,298 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:47:30,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:47:30,299 INFO L225 Difference]: With dead ends: 218 [2021-10-07 16:47:30,299 INFO L226 Difference]: Without dead ends: 202 [2021-10-07 16:47:30,299 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 7177.2ms TimeCoverageRelationStatistics Valid=425, Invalid=2545, Unknown=0, NotChecked=0, Total=2970 [2021-10-07 16:47:30,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-10-07 16:47:30,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 148. [2021-10-07 16:47:30,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.122448979591837) internal successors, (312), 147 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:30,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 312 transitions. [2021-10-07 16:47:30,303 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 312 transitions. Word has length 19 [2021-10-07 16:47:30,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:47:30,303 INFO L470 AbstractCegarLoop]: Abstraction has 148 states and 312 transitions. [2021-10-07 16:47:30,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.6521739130434783) internal successors, (38), 23 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:30,304 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 312 transitions. [2021-10-07 16:47:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:47:30,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:47:30,304 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:47:30,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (74)] Forceful destruction successful, exit code 0 [2021-10-07 16:47:30,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 74 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:47:30,508 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:47:30,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:47:30,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1501477216, now seen corresponding path program 57 times [2021-10-07 16:47:30,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:47:30,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840680507] [2021-10-07 16:47:30,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:47:30,510 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:47:30,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:47:30,512 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:47:30,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Waiting until timeout for monitored process [2021-10-07 16:47:31,246 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:47:31,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:47:31,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:47:31,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:47:31,490 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 16:47:31,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:47:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-07 16:47:31,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:47:31,840 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1840680507] [2021-10-07 16:47:31,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1840680507] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:47:31,841 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:47:31,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:47:31,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704980333] [2021-10-07 16:47:31,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 16:47:31,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:47:31,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 16:47:31,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:47:31,842 INFO L87 Difference]: Start difference. First operand 148 states and 312 transitions. Second operand has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:32,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:47:32,021 INFO L93 Difference]: Finished difference Result 153 states and 316 transitions. [2021-10-07 16:47:32,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:47:32,022 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:47:32,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:47:32,022 INFO L225 Difference]: With dead ends: 153 [2021-10-07 16:47:32,022 INFO L226 Difference]: Without dead ends: 128 [2021-10-07 16:47:32,022 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 255.2ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:47:32,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-07 16:47:32,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 108. [2021-10-07 16:47:32,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.0654205607476634) internal successors, (221), 107 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 221 transitions. [2021-10-07 16:47:32,025 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 221 transitions. Word has length 19 [2021-10-07 16:47:32,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:47:32,025 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 221 transitions. [2021-10-07 16:47:32,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:32,025 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 221 transitions. [2021-10-07 16:47:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:47:32,025 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:47:32,025 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:47:32,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (75)] Ended with exit code 0 [2021-10-07 16:47:32,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:47:32,226 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:47:32,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:47:32,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1276185762, now seen corresponding path program 58 times [2021-10-07 16:47:32,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:47:32,228 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909705127] [2021-10-07 16:47:32,228 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:47:32,228 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:47:32,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:47:32,230 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:47:32,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2021-10-07 16:47:32,950 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:47:32,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:47:32,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-07 16:47:32,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:47:33,082 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:47:33,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:47:33,286 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 16:47:33,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:47:33,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909705127] [2021-10-07 16:47:33,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909705127] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:47:33,287 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:47:33,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2021-10-07 16:47:33,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863112293] [2021-10-07 16:47:33,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 16:47:33,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:47:33,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 16:47:33,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-10-07 16:47:33,289 INFO L87 Difference]: Start difference. First operand 108 states and 221 transitions. Second operand has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:33,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:47:33,947 INFO L93 Difference]: Finished difference Result 138 states and 264 transitions. [2021-10-07 16:47:33,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 16:47:33,948 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:47:33,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:47:33,948 INFO L225 Difference]: With dead ends: 138 [2021-10-07 16:47:33,948 INFO L226 Difference]: Without dead ends: 138 [2021-10-07 16:47:33,948 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 675.5ms TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2021-10-07 16:47:33,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-10-07 16:47:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 102. [2021-10-07 16:47:33,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 2.0594059405940595) internal successors, (208), 101 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:33,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 208 transitions. [2021-10-07 16:47:33,950 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 208 transitions. Word has length 19 [2021-10-07 16:47:33,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:47:33,950 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 208 transitions. [2021-10-07 16:47:33,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 13 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:33,951 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 208 transitions. [2021-10-07 16:47:33,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:47:33,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:47:33,951 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:47:33,963 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2021-10-07 16:47:34,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:47:34,152 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:47:34,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:47:34,153 INFO L82 PathProgramCache]: Analyzing trace with hash -484424676, now seen corresponding path program 59 times [2021-10-07 16:47:34,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:47:34,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801018944] [2021-10-07 16:47:34,154 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:47:34,154 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:47:34,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:47:34,156 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:47:34,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Waiting until timeout for monitored process [2021-10-07 16:47:34,918 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 16:47:34,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:47:34,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:47:34,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:47:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:35,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:47:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:36,365 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:47:36,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801018944] [2021-10-07 16:47:36,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [801018944] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:47:36,365 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:47:36,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:47:36,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208415397] [2021-10-07 16:47:36,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:47:36,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:47:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:47:36,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=448, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:47:36,367 INFO L87 Difference]: Start difference. First operand 102 states and 208 transitions. Second operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:38,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:47:38,071 INFO L93 Difference]: Finished difference Result 155 states and 294 transitions. [2021-10-07 16:47:38,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-07 16:47:38,071 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:47:38,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:47:38,072 INFO L225 Difference]: With dead ends: 155 [2021-10-07 16:47:38,072 INFO L226 Difference]: Without dead ends: 140 [2021-10-07 16:47:38,072 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 2335.4ms TimeCoverageRelationStatistics Valid=123, Invalid=747, Unknown=0, NotChecked=0, Total=870 [2021-10-07 16:47:38,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-07 16:47:38,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 104. [2021-10-07 16:47:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 2.0679611650485437) internal successors, (213), 103 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:38,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 213 transitions. [2021-10-07 16:47:38,075 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 213 transitions. Word has length 19 [2021-10-07 16:47:38,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:47:38,075 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 213 transitions. [2021-10-07 16:47:38,075 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:38,075 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 213 transitions. [2021-10-07 16:47:38,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 16:47:38,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:47:38,076 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:47:38,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (77)] Forceful destruction successful, exit code 0 [2021-10-07 16:47:38,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:47:38,276 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:47:38,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:47:38,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1116013178, now seen corresponding path program 60 times [2021-10-07 16:47:38,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:47:38,278 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1429507298] [2021-10-07 16:47:38,278 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:47:38,279 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:47:38,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:47:38,280 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:47:38,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2021-10-07 16:47:39,093 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 16:47:39,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:47:39,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-07 16:47:39,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:47:39,529 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:39,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:47:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:40,460 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:47:40,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1429507298] [2021-10-07 16:47:40,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1429507298] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:47:40,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:47:40,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-07 16:47:40,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209075994] [2021-10-07 16:47:40,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-10-07 16:47:40,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:47:40,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-10-07 16:47:40,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-10-07 16:47:40,462 INFO L87 Difference]: Start difference. First operand 104 states and 213 transitions. Second operand has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:45,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:47:45,521 INFO L93 Difference]: Finished difference Result 202 states and 419 transitions. [2021-10-07 16:47:45,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-07 16:47:45,522 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-07 16:47:45,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:47:45,522 INFO L225 Difference]: With dead ends: 202 [2021-10-07 16:47:45,522 INFO L226 Difference]: Without dead ends: 184 [2021-10-07 16:47:45,523 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 592 ImplicationChecksByTransitivity, 5306.5ms TimeCoverageRelationStatistics Valid=373, Invalid=2077, Unknown=0, NotChecked=0, Total=2450 [2021-10-07 16:47:45,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-07 16:47:45,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 112. [2021-10-07 16:47:45,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 111 states have (on average 2.171171171171171) internal successors, (241), 111 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:45,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 241 transitions. [2021-10-07 16:47:45,526 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 241 transitions. Word has length 19 [2021-10-07 16:47:45,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:47:45,527 INFO L470 AbstractCegarLoop]: Abstraction has 112 states and 241 transitions. [2021-10-07 16:47:45,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 22 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:45,527 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 241 transitions. [2021-10-07 16:47:45,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:47:45,527 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:47:45,527 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:47:45,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2021-10-07 16:47:45,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:47:45,732 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:47:45,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:47:45,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1873200117, now seen corresponding path program 61 times [2021-10-07 16:47:45,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:47:45,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [20456353] [2021-10-07 16:47:45,733 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:47:45,734 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:47:45,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:47:45,735 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:47:45,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2021-10-07 16:47:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:47:46,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:47:46,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:47:46,653 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:46,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:47:47,045 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:47,045 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:47:47,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [20456353] [2021-10-07 16:47:47,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [20456353] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:47:47,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:47:47,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2021-10-07 16:47:47,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122135599] [2021-10-07 16:47:47,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 16:47:47,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:47:47,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 16:47:47,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-10-07 16:47:47,047 INFO L87 Difference]: Start difference. First operand 112 states and 241 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:49,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:47:49,882 INFO L93 Difference]: Finished difference Result 204 states and 409 transitions. [2021-10-07 16:47:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-10-07 16:47:49,882 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:47:49,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:47:49,883 INFO L225 Difference]: With dead ends: 204 [2021-10-07 16:47:49,883 INFO L226 Difference]: Without dead ends: 196 [2021-10-07 16:47:49,883 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 2553.4ms TimeCoverageRelationStatistics Valid=360, Invalid=1620, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 16:47:49,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-07 16:47:49,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 122. [2021-10-07 16:47:49,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.1487603305785123) internal successors, (260), 121 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:49,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 260 transitions. [2021-10-07 16:47:49,886 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 260 transitions. Word has length 20 [2021-10-07 16:47:49,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:47:49,886 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 260 transitions. [2021-10-07 16:47:49,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 18 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:49,886 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 260 transitions. [2021-10-07 16:47:49,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:47:49,886 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:47:49,886 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:47:49,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2021-10-07 16:47:50,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 79 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:47:50,087 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:47:50,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:47:50,088 INFO L82 PathProgramCache]: Analyzing trace with hash -603460413, now seen corresponding path program 62 times [2021-10-07 16:47:50,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:47:50,089 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81943254] [2021-10-07 16:47:50,089 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:47:50,089 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:47:50,090 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:47:50,091 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:47:50,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2021-10-07 16:47:50,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:47:50,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:47:50,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 16:47:50,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:47:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:51,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:47:51,409 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:51,410 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:47:51,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81943254] [2021-10-07 16:47:51,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81943254] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:47:51,410 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:47:51,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 17 [2021-10-07 16:47:51,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831646877] [2021-10-07 16:47:51,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-07 16:47:51,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:47:51,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-07 16:47:51,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-10-07 16:47:51,412 INFO L87 Difference]: Start difference. First operand 122 states and 260 transitions. Second operand has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:52,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:47:52,340 INFO L93 Difference]: Finished difference Result 172 states and 337 transitions. [2021-10-07 16:47:52,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-07 16:47:52,341 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:47:52,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:47:52,341 INFO L225 Difference]: With dead ends: 172 [2021-10-07 16:47:52,341 INFO L226 Difference]: Without dead ends: 172 [2021-10-07 16:47:52,341 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 852.1ms TimeCoverageRelationStatistics Valid=157, Invalid=713, Unknown=0, NotChecked=0, Total=870 [2021-10-07 16:47:52,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-07 16:47:52,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 122. [2021-10-07 16:47:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.1487603305785123) internal successors, (260), 121 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 260 transitions. [2021-10-07 16:47:52,344 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 260 transitions. Word has length 20 [2021-10-07 16:47:52,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:47:52,344 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 260 transitions. [2021-10-07 16:47:52,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 17 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:52,344 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 260 transitions. [2021-10-07 16:47:52,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-07 16:47:52,345 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:47:52,345 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:47:52,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2021-10-07 16:47:52,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:47:52,546 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:47:52,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:47:52,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1417876675, now seen corresponding path program 63 times [2021-10-07 16:47:52,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:47:52,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1526372759] [2021-10-07 16:47:52,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:47:52,548 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:47:52,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:47:52,550 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:47:52,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Waiting until timeout for monitored process [2021-10-07 16:47:53,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-07 16:47:53,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:47:53,379 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:47:53,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:47:53,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 16:47:53,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:47:53,863 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-07 16:47:53,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:47:53,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1526372759] [2021-10-07 16:47:53,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1526372759] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:47:53,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:47:53,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-10-07 16:47:53,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015668930] [2021-10-07 16:47:53,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 16:47:53,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:47:53,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 16:47:53,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:47:53,866 INFO L87 Difference]: Start difference. First operand 122 states and 260 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:53,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:47:53,984 INFO L93 Difference]: Finished difference Result 129 states and 267 transitions. [2021-10-07 16:47:53,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:47:53,984 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-07 16:47:53,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:47:53,984 INFO L225 Difference]: With dead ends: 129 [2021-10-07 16:47:53,984 INFO L226 Difference]: Without dead ends: 70 [2021-10-07 16:47:53,985 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 202.2ms TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-10-07 16:47:53,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-07 16:47:53,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2021-10-07 16:47:53,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 53 states have (on average 1.849056603773585) internal successors, (98), 53 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:53,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2021-10-07 16:47:53,986 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 20 [2021-10-07 16:47:53,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:47:53,986 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2021-10-07 16:47:53,986 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:47:53,986 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2021-10-07 16:47:53,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-07 16:47:53,987 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:47:53,987 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:47:53,999 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (81)] Ended with exit code 0 [2021-10-07 16:47:54,187 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:47:54,188 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:47:54,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:47:54,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1511190324, now seen corresponding path program 64 times [2021-10-07 16:47:54,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:47:54,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1770979744] [2021-10-07 16:47:54,189 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 16:47:54,190 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:47:54,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:47:54,191 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:47:54,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2021-10-07 16:47:55,033 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 16:47:55,033 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:47:55,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-07 16:47:55,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:47:55,784 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:55,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:47:57,703 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:47:57,703 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:47:57,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1770979744] [2021-10-07 16:47:57,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1770979744] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:47:57,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:47:57,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2021-10-07 16:47:57,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351130765] [2021-10-07 16:47:57,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-07 16:47:57,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:47:57,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-07 16:47:57,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=589, Unknown=0, NotChecked=0, Total=756 [2021-10-07 16:47:57,705 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:04,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:48:04,596 INFO L93 Difference]: Finished difference Result 124 states and 223 transitions. [2021-10-07 16:48:04,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-10-07 16:48:04,597 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-10-07 16:48:04,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:48:04,597 INFO L225 Difference]: With dead ends: 124 [2021-10-07 16:48:04,597 INFO L226 Difference]: Without dead ends: 88 [2021-10-07 16:48:04,598 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 7689.5ms TimeCoverageRelationStatistics Valid=813, Invalid=2727, Unknown=0, NotChecked=0, Total=3540 [2021-10-07 16:48:04,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-07 16:48:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 62. [2021-10-07 16:48:04,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.8524590163934427) internal successors, (113), 61 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:04,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 113 transitions. [2021-10-07 16:48:04,599 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 113 transitions. Word has length 21 [2021-10-07 16:48:04,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:48:04,599 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 113 transitions. [2021-10-07 16:48:04,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:04,599 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 113 transitions. [2021-10-07 16:48:04,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 16:48:04,600 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:48:04,600 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:48:04,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2021-10-07 16:48:04,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:48:04,801 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:48:04,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:48:04,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1500009820, now seen corresponding path program 65 times [2021-10-07 16:48:04,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:48:04,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117347654] [2021-10-07 16:48:04,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 16:48:04,804 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:48:04,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:48:04,805 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:48:04,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2021-10-07 16:48:05,684 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2021-10-07 16:48:05,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:48:05,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:48:05,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:48:06,570 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:48:06,570 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:48:08,303 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:48:08,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:48:08,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117347654] [2021-10-07 16:48:08,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117347654] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:48:08,304 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:48:08,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-10-07 16:48:08,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881404270] [2021-10-07 16:48:08,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 16:48:08,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:48:08,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 16:48:08,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=812, Unknown=0, NotChecked=0, Total=930 [2021-10-07 16:48:08,305 INFO L87 Difference]: Start difference. First operand 62 states and 113 transitions. Second operand has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:19,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:48:19,057 INFO L93 Difference]: Finished difference Result 197 states and 345 transitions. [2021-10-07 16:48:19,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-10-07 16:48:19,058 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 16:48:19,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:48:19,058 INFO L225 Difference]: With dead ends: 197 [2021-10-07 16:48:19,058 INFO L226 Difference]: Without dead ends: 188 [2021-10-07 16:48:19,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 11155.9ms TimeCoverageRelationStatistics Valid=804, Invalid=4452, Unknown=0, NotChecked=0, Total=5256 [2021-10-07 16:48:19,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-10-07 16:48:19,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 66. [2021-10-07 16:48:19,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 65 states have (on average 1.8615384615384616) internal successors, (121), 65 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:19,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 121 transitions. [2021-10-07 16:48:19,061 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 121 transitions. Word has length 23 [2021-10-07 16:48:19,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:48:19,061 INFO L470 AbstractCegarLoop]: Abstraction has 66 states and 121 transitions. [2021-10-07 16:48:19,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 121 transitions. [2021-10-07 16:48:19,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-07 16:48:19,062 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:48:19,062 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:48:19,076 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (83)] Forceful destruction successful, exit code 0 [2021-10-07 16:48:19,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:48:19,268 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:48:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:48:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1501927244, now seen corresponding path program 66 times [2021-10-07 16:48:19,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:48:19,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [898479821] [2021-10-07 16:48:19,269 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 16:48:19,270 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:48:19,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:48:19,271 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:48:19,273 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2021-10-07 16:48:20,180 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-10-07 16:48:20,181 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:48:20,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-07 16:48:20,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:48:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:48:20,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:48:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:48:22,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:48:22,666 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [898479821] [2021-10-07 16:48:22,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [898479821] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:48:22,666 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:48:22,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-10-07 16:48:22,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449343990] [2021-10-07 16:48:22,666 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-07 16:48:22,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:48:22,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-07 16:48:22,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=733, Unknown=0, NotChecked=0, Total=930 [2021-10-07 16:48:22,667 INFO L87 Difference]: Start difference. First operand 66 states and 121 transitions. Second operand has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:29,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:48:29,857 INFO L93 Difference]: Finished difference Result 150 states and 274 transitions. [2021-10-07 16:48:29,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-10-07 16:48:29,858 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-10-07 16:48:29,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:48:29,858 INFO L225 Difference]: With dead ends: 150 [2021-10-07 16:48:29,858 INFO L226 Difference]: Without dead ends: 134 [2021-10-07 16:48:29,858 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 7663.3ms TimeCoverageRelationStatistics Valid=744, Invalid=2796, Unknown=0, NotChecked=0, Total=3540 [2021-10-07 16:48:29,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-07 16:48:29,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 80. [2021-10-07 16:48:29,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.7974683544303798) internal successors, (142), 79 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:29,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 142 transitions. [2021-10-07 16:48:29,860 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 142 transitions. Word has length 23 [2021-10-07 16:48:29,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:48:29,860 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 142 transitions. [2021-10-07 16:48:29,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 30 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:29,861 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 142 transitions. [2021-10-07 16:48:29,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 16:48:29,861 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:48:29,861 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:48:29,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (84)] Ended with exit code 0 [2021-10-07 16:48:30,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 84 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:48:30,062 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:48:30,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:48:30,063 INFO L82 PathProgramCache]: Analyzing trace with hash -406688061, now seen corresponding path program 67 times [2021-10-07 16:48:30,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:48:30,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [92262878] [2021-10-07 16:48:30,064 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 16:48:30,065 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:48:30,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:48:30,066 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:48:30,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Waiting until timeout for monitored process [2021-10-07 16:48:30,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 16:48:30,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:48:30,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:48:31,255 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:48:31,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:48:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:48:32,062 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:48:32,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [92262878] [2021-10-07 16:48:32,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [92262878] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:48:32,062 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:48:32,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2021-10-07 16:48:32,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877352485] [2021-10-07 16:48:32,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-10-07 16:48:32,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:48:32,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-10-07 16:48:32,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2021-10-07 16:48:32,064 INFO L87 Difference]: Start difference. First operand 80 states and 142 transitions. Second operand has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:34,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:48:34,200 INFO L93 Difference]: Finished difference Result 142 states and 240 transitions. [2021-10-07 16:48:34,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-10-07 16:48:34,201 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 16:48:34,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:48:34,202 INFO L225 Difference]: With dead ends: 142 [2021-10-07 16:48:34,202 INFO L226 Difference]: Without dead ends: 106 [2021-10-07 16:48:34,202 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 2229.5ms TimeCoverageRelationStatistics Valid=230, Invalid=1750, Unknown=0, NotChecked=0, Total=1980 [2021-10-07 16:48:34,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-07 16:48:34,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 70. [2021-10-07 16:48:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.855072463768116) internal successors, (128), 69 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 128 transitions. [2021-10-07 16:48:34,204 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 128 transitions. Word has length 24 [2021-10-07 16:48:34,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:48:34,204 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 128 transitions. [2021-10-07 16:48:34,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 27 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:34,205 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 128 transitions. [2021-10-07 16:48:34,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 16:48:34,205 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:48:34,205 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:48:34,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (85)] Forceful destruction successful, exit code 0 [2021-10-07 16:48:34,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:48:34,406 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:48:34,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:48:34,407 INFO L82 PathProgramCache]: Analyzing trace with hash -562802557, now seen corresponding path program 68 times [2021-10-07 16:48:34,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:48:34,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244775875] [2021-10-07 16:48:34,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 16:48:34,408 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:48:34,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:48:34,410 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:48:34,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2021-10-07 16:48:35,285 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 16:48:35,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:48:35,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 16:48:35,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:48:35,450 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:48:35,450 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:48:36,063 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 16:48:36,063 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:48:36,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244775875] [2021-10-07 16:48:36,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244775875] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:48:36,064 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:48:36,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15] total 22 [2021-10-07 16:48:36,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570150200] [2021-10-07 16:48:36,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-07 16:48:36,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:48:36,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-07 16:48:36,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-10-07 16:48:36,065 INFO L87 Difference]: Start difference. First operand 70 states and 128 transitions. Second operand has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:37,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:48:37,649 INFO L93 Difference]: Finished difference Result 96 states and 169 transitions. [2021-10-07 16:48:37,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 16:48:37,650 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 16:48:37,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:48:37,651 INFO L225 Difference]: With dead ends: 96 [2021-10-07 16:48:37,651 INFO L226 Difference]: Without dead ends: 82 [2021-10-07 16:48:37,651 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1688.1ms TimeCoverageRelationStatistics Valid=197, Invalid=993, Unknown=0, NotChecked=0, Total=1190 [2021-10-07 16:48:37,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-07 16:48:37,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2021-10-07 16:48:37,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 69 states have (on average 1.855072463768116) internal successors, (128), 69 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:37,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 128 transitions. [2021-10-07 16:48:37,653 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 128 transitions. Word has length 24 [2021-10-07 16:48:37,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:48:37,653 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 128 transitions. [2021-10-07 16:48:37,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 22 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:37,653 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 128 transitions. [2021-10-07 16:48:37,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 16:48:37,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 16:48:37,654 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 16:48:37,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2021-10-07 16:48:37,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:48:37,856 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 16:48:37,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 16:48:37,856 INFO L82 PathProgramCache]: Analyzing trace with hash -92005388, now seen corresponding path program 69 times [2021-10-07 16:48:37,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 16:48:37,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402505101] [2021-10-07 16:48:37,859 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 16:48:37,859 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 16:48:37,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 16:48:37,860 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 16:48:37,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2021-10-07 16:48:38,785 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 16:48:38,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 16:48:38,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 16:48:38,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 16:48:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 16:48:39,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 16:48:39,639 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-07 16:48:39,639 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 16:48:39,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402505101] [2021-10-07 16:48:39,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402505101] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 16:48:39,640 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 16:48:39,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 16:48:39,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394090589] [2021-10-07 16:48:39,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 16:48:39,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 16:48:39,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 16:48:39,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:48:39,641 INFO L87 Difference]: Start difference. First operand 70 states and 128 transitions. Second operand has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:39,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 16:48:39,780 INFO L93 Difference]: Finished difference Result 69 states and 127 transitions. [2021-10-07 16:48:39,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-07 16:48:39,780 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 16:48:39,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 16:48:39,781 INFO L225 Difference]: With dead ends: 69 [2021-10-07 16:48:39,781 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 16:48:39,781 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 275.5ms TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-07 16:48:39,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 16:48:39,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 16:48:39,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:39,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 16:48:39,782 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-10-07 16:48:39,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 16:48:39,782 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 16:48:39,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 16:48:39,783 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 16:48:39,783 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 16:48:39,785 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 16:48:39,786 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 16:48:39,786 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 16:48:39,786 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 16:48:39,786 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 16:48:39,786 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 16:48:39,787 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 16:48:39,787 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 16:48:39,789 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:48:39,790 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 16:48:39,790 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 16:48:39,790 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 16:48:39,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2021-10-07 16:48:39,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 16:48:40,006 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 16:48:40,006 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 16:48:40,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 04:48:40 BasicIcfg [2021-10-07 16:48:40,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 16:48:40,009 INFO L168 Benchmark]: Toolchain (without parser) took 349526.12 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 135.5 MB in the beginning and 158.1 MB in the end (delta: -22.6 MB). Peak memory consumption was 124.7 MB. Max. memory is 8.0 GB. [2021-10-07 16:48:40,009 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 16:48:40,009 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.73 ms. Allocated memory is still 160.4 MB. Free memory was 135.1 MB in the beginning and 124.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:48:40,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.19 ms. Allocated memory is still 160.4 MB. Free memory was 124.6 MB in the beginning and 123.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:48:40,010 INFO L168 Benchmark]: Boogie Preprocessor took 63.79 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 121.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 16:48:40,010 INFO L168 Benchmark]: RCFGBuilder took 526.78 ms. Allocated memory is still 160.4 MB. Free memory was 121.9 MB in the beginning and 109.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-10-07 16:48:40,010 INFO L168 Benchmark]: TraceAbstraction took 348529.61 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 109.4 MB in the beginning and 158.1 MB in the end (delta: -48.7 MB). Peak memory consumption was 98.5 MB. Max. memory is 8.0 GB. [2021-10-07 16:48:40,012 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 318.73 ms. Allocated memory is still 160.4 MB. Free memory was 135.1 MB in the beginning and 124.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 67.19 ms. Allocated memory is still 160.4 MB. Free memory was 124.6 MB in the beginning and 123.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.79 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 121.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 526.78 ms. Allocated memory is still 160.4 MB. Free memory was 121.9 MB in the beginning and 109.8 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 348529.61 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 109.4 MB in the beginning and 158.1 MB in the end (delta: -48.7 MB). Peak memory consumption was 98.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7877.1ms, 91 PlacesBefore, 32 PlacesAfterwards, 90 TransitionsBefore, 27 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 6 FixpointIterations, 52 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 90 TotalNumberOfCompositions, 783 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 783, positive: 783, positive conditional: 0, positive unconditional: 783, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 454, positive: 454, positive conditional: 0, positive unconditional: 454, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 454, positive: 451, positive conditional: 0, positive unconditional: 451, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 3, positive: 3, positive conditional: 0, positive unconditional: 3, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 41, positive: 41, positive conditional: 0, positive unconditional: 41, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 783, positive: 329, positive conditional: 0, positive unconditional: 329, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 454, unknown conditional: 0, unknown unconditional: 454] , Statistics on independence cache: Total cache size (in pairs): 32, Positive cache size: 32, Positive conditional cache size: 0, Positive unconditional cache size: 32, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 69]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 69]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 70]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 70]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 71]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 71]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 72]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 72]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 75]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 62]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 107 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 348362.5ms, OverallIterations: 86, TraceHistogramMax: 6, EmptinessCheckTime: 90.0ms, AutomataDifference: 211049.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7951.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2818 SDtfs, 7116 SDslu, 17604 SDs, 0 SdLazy, 20745 SolverSat, 4224 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44427.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3993 GetRequests, 1466 SyntacticMatches, 45 SemanticMatches, 2482 ConstructedPredicates, 0 IntricatePredicates, 53 DeprecatedPredicates, 24991 ImplicationChecksByTransitivity, 204472.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=526occurred in iteration=55, InterpolantAutomatonStates: 1906, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 599.5ms AutomataMinimizationTime, 86 MinimizatonAttempts, 7110 StatesRemovedByMinimization, 80 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 530.3ms SsaConstructionTime, 4651.6ms SatisfiabilityAnalysisTime, 73596.4ms InterpolantComputationTime, 1396 NumberOfCodeBlocks, 1383 NumberOfCodeBlocksAsserted, 162 NumberOfCheckSat, 2620 ConstructedInterpolants, 195 QuantifiedInterpolants, 24389 SizeOfPredicates, 302 NumberOfNonLiveVariables, 6125 ConjunctsInSsa, 1081 ConjunctsInUnsatCore, 172 InterpolantComputations, 29 PerfectInterpolantSequences, 218/1268 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-07 16:48:40,059 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...