/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/parallel-misc-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:48:18,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:48:18,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:48:18,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:48:18,421 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 15:48:18,455 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:48:18,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:48:18,459 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:48:18,459 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:48:18,460 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:48:18,460 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:48:18,461 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:48:18,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:48:18,461 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:48:18,461 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:48:18,462 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:48:18,465 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:48:18,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:48:18,465 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:48:18,465 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:48:18,466 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:48:18,466 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:48:18,466 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:48:18,466 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:48:18,466 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:48:18,467 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:48:18,467 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:48:18,467 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:48:18,467 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:48:18,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:48:18,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:48:18,468 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:48:18,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:48:18,469 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:48:18,469 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:48:18,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:48:18,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:48:18,470 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:48:18,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:48:18,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:48:18,883 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:48:18,886 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:48:18,886 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:48:18,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2021-10-07 15:48:18,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcb65a168/6e5ecb0333e649c682aafce1a23b7eeb/FLAG32d7cf946 [2021-10-07 15:48:19,614 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:48:19,614 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-misc-3.wvr.c [2021-10-07 15:48:19,627 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcb65a168/6e5ecb0333e649c682aafce1a23b7eeb/FLAG32d7cf946 [2021-10-07 15:48:19,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcb65a168/6e5ecb0333e649c682aafce1a23b7eeb [2021-10-07 15:48:19,990 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:48:19,998 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:48:20,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:48:20,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:48:20,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:48:20,008 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:48:19" (1/1) ... [2021-10-07 15:48:20,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@143ed115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:20, skipping insertion in model container [2021-10-07 15:48:20,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:48:19" (1/1) ... [2021-10-07 15:48:20,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:48:20,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:48:20,208 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/parallel-misc-3.wvr.c[2273,2286] [2021-10-07 15:48:20,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:48:20,226 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:48:20,250 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/parallel-misc-3.wvr.c[2273,2286] [2021-10-07 15:48:20,251 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:48:20,269 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:48:20,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:20 WrapperNode [2021-10-07 15:48:20,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:48:20,271 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:48:20,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:48:20,272 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:48:20,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:20" (1/1) ... [2021-10-07 15:48:20,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:20" (1/1) ... [2021-10-07 15:48:20,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:48:20,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:48:20,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:48:20,317 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:48:20,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:20" (1/1) ... [2021-10-07 15:48:20,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:20" (1/1) ... [2021-10-07 15:48:20,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:20" (1/1) ... [2021-10-07 15:48:20,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:20" (1/1) ... [2021-10-07 15:48:20,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:20" (1/1) ... [2021-10-07 15:48:20,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:20" (1/1) ... [2021-10-07 15:48:20,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:20" (1/1) ... [2021-10-07 15:48:20,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:48:20,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:48:20,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:48:20,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:48:20,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:20" (1/1) ... [2021-10-07 15:48:20,370 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:48:20,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:48:20,399 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 15:48:20,410 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 15:48:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:48:20,461 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:48:20,461 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:48:20,462 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:48:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:48:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:48:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-07 15:48:20,462 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-07 15:48:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:48:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:48:20,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:48:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:48:20,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:48:20,465 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 15:48:20,942 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:48:20,943 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-07 15:48:20,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:48:20 BoogieIcfgContainer [2021-10-07 15:48:20,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:48:20,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:48:20,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:48:20,951 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:48:20,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:48:19" (1/3) ... [2021-10-07 15:48:20,952 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241be141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:48:20, skipping insertion in model container [2021-10-07 15:48:20,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:48:20" (2/3) ... [2021-10-07 15:48:20,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241be141 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:48:20, skipping insertion in model container [2021-10-07 15:48:20,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:48:20" (3/3) ... [2021-10-07 15:48:20,955 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2021-10-07 15:48:20,961 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:48:20,962 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 15:48:20,962 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:48:21,026 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,027 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,027 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,027 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,028 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,028 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,028 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,028 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,029 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,029 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,029 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,029 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,030 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,030 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,030 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,030 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,031 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,031 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,032 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,032 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,033 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,033 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,033 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,034 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,034 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,034 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,034 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,035 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,039 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,040 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,040 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,043 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,044 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~nondet5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,044 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,044 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,044 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:48:21,050 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 15:48:21,105 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:48:21,114 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 15:48:21,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-07 15:48:21,131 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:48:21,144 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 97 places, 101 transitions, 218 flow [2021-10-07 15:48:21,148 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 97 places, 101 transitions, 218 flow [2021-10-07 15:48:21,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 97 places, 101 transitions, 218 flow [2021-10-07 15:48:21,202 INFO L129 PetriNetUnfolder]: 11/99 cut-off events. [2021-10-07 15:48:21,203 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 15:48:21,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 99 events. 11/99 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 119 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2021-10-07 15:48:21,220 INFO L116 LiptonReduction]: Number of co-enabled transitions 1360 [2021-10-07 15:48:29,900 INFO L131 LiptonReduction]: Checked pairs total: 1314 [2021-10-07 15:48:29,901 INFO L133 LiptonReduction]: Total number of compositions: 111 [2021-10-07 15:48:29,910 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 25 transitions, 66 flow [2021-10-07 15:48:29,922 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:29,924 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:29,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:48:29,929 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:29,930 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:48:29,930 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:48:29,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:29,936 INFO L82 PathProgramCache]: Analyzing trace with hash 431, now seen corresponding path program 1 times [2021-10-07 15:48:29,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:29,949 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [180012482] [2021-10-07 15:48:29,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:29,950 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:29,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:29,957 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 15:48:29,959 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 15:48:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:30,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:48:30,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:30,013 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 15:48:30,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:30,014 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 15:48:30,015 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:30,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [180012482] [2021-10-07 15:48:30,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [180012482] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:30,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:30,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:48:30,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103142387] [2021-10-07 15:48:30,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:48:30,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:30,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:48:30,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:48:30,042 INFO L87 Difference]: Start difference. First operand has 39 states, 29 states have (on average 2.8620689655172415) internal successors, (83), 38 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 15:48:30,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:30,056 INFO L93 Difference]: Finished difference Result 36 states and 80 transitions. [2021-10-07 15:48:30,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:48:30,058 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 15:48:30,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:30,067 INFO L225 Difference]: With dead ends: 36 [2021-10-07 15:48:30,068 INFO L226 Difference]: Without dead ends: 36 [2021-10-07 15:48:30,069 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 15:48:30,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-07 15:48:30,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2021-10-07 15:48:30,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 29 states have (on average 2.7586206896551726) internal successors, (80), 35 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:30,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 80 transitions. [2021-10-07 15:48:30,106 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 80 transitions. Word has length 1 [2021-10-07 15:48:30,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:30,107 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 80 transitions. [2021-10-07 15:48:30,107 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 15:48:30,107 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 80 transitions. [2021-10-07 15:48:30,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:48:30,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:30,108 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:48:30,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-07 15:48:30,320 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 15:48:30,321 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:48:30,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:30,322 INFO L82 PathProgramCache]: Analyzing trace with hash 424491, now seen corresponding path program 1 times [2021-10-07 15:48:30,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:30,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447278421] [2021-10-07 15:48:30,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:30,324 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:30,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:30,325 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 15:48:30,331 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 15:48:30,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:30,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:48:30,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:30,546 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-07 15:48:30,547 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 15:48:30,954 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 15:48:30,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:30,970 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:30,972 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447278421] [2021-10-07 15:48:30,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447278421] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:30,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:30,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:48:30,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907674447] [2021-10-07 15:48:30,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:48:30,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:30,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:48:30,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:30,980 INFO L87 Difference]: Start difference. First operand 36 states and 80 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 15:48:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:31,012 INFO L93 Difference]: Finished difference Result 32 states and 72 transitions. [2021-10-07 15:48:31,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:31,014 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 15:48:31,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:31,016 INFO L225 Difference]: With dead ends: 32 [2021-10-07 15:48:31,017 INFO L226 Difference]: Without dead ends: 32 [2021-10-07 15:48:31,017 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:31,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-07 15:48:31,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-07 15:48:31,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 2.6666666666666665) internal successors, (72), 31 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:31,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 72 transitions. [2021-10-07 15:48:31,031 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 72 transitions. Word has length 3 [2021-10-07 15:48:31,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:31,032 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 72 transitions. [2021-10-07 15:48:31,032 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 15:48:31,032 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 72 transitions. [2021-10-07 15:48:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:48:31,033 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:31,033 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:48:31,050 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 15:48:31,246 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 15:48:31,247 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:48:31,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:31,249 INFO L82 PathProgramCache]: Analyzing trace with hash 424493, now seen corresponding path program 1 times [2021-10-07 15:48:31,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:31,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1209292782] [2021-10-07 15:48:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:31,250 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:31,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:31,254 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 15:48:31,270 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 15:48:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:31,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:48:31,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:31,404 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 15:48:31,405 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 15:48:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:31,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:31,531 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 15:48:31,532 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:31,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1209292782] [2021-10-07 15:48:31,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1209292782] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:31,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:31,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:48:31,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293779829] [2021-10-07 15:48:31,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:31,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:31,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:31,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:31,535 INFO L87 Difference]: Start difference. First operand 32 states and 72 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 15:48:31,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:31,559 INFO L93 Difference]: Finished difference Result 28 states and 64 transitions. [2021-10-07 15:48:31,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:31,560 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 15:48:31,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:31,561 INFO L225 Difference]: With dead ends: 28 [2021-10-07 15:48:31,561 INFO L226 Difference]: Without dead ends: 28 [2021-10-07 15:48:31,562 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:31,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-07 15:48:31,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-07 15:48:31,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 2.56) internal successors, (64), 27 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 64 transitions. [2021-10-07 15:48:31,567 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 64 transitions. Word has length 3 [2021-10-07 15:48:31,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:31,567 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 64 transitions. [2021-10-07 15:48:31,567 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 15:48:31,567 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 64 transitions. [2021-10-07 15:48:31,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:48:31,568 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:31,568 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:48:31,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:48:31,779 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 15:48:31,780 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:48:31,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:31,783 INFO L82 PathProgramCache]: Analyzing trace with hash 407946058, now seen corresponding path program 1 times [2021-10-07 15:48:31,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:31,784 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235388933] [2021-10-07 15:48:31,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:31,784 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:31,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:31,785 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 15:48:31,792 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 15:48:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:31,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:48:31,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:31,944 INFO L354 Elim1Store]: treesize reduction 142, result has 23.2 percent of original size [2021-10-07 15:48:31,945 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 15:48:32,239 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 15:48:32,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:32,253 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 15:48:32,254 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:32,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235388933] [2021-10-07 15:48:32,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235388933] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:32,255 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:32,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:48:32,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110032632] [2021-10-07 15:48:32,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:48:32,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:32,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:48:32,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:32,257 INFO L87 Difference]: Start difference. First operand 28 states and 64 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 15:48:32,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:32,274 INFO L93 Difference]: Finished difference Result 24 states and 52 transitions. [2021-10-07 15:48:32,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:32,275 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 15:48:32,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:32,276 INFO L225 Difference]: With dead ends: 24 [2021-10-07 15:48:32,276 INFO L226 Difference]: Without dead ends: 24 [2021-10-07 15:48:32,277 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:32,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-10-07 15:48:32,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-10-07 15:48:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 23 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:32,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 52 transitions. [2021-10-07 15:48:32,281 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 52 transitions. Word has length 5 [2021-10-07 15:48:32,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:32,281 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 52 transitions. [2021-10-07 15:48:32,281 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 15:48:32,282 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 52 transitions. [2021-10-07 15:48:32,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:48:32,282 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:32,282 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:48:32,300 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 15:48:32,494 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 15:48:32,495 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:48:32,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:32,497 INFO L82 PathProgramCache]: Analyzing trace with hash 407946060, now seen corresponding path program 1 times [2021-10-07 15:48:32,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:32,498 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437193159] [2021-10-07 15:48:32,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:32,498 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:32,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:32,499 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 15:48:32,501 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 15:48:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:32,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:48:32,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:32,621 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 15:48:32,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:32,678 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 15:48:32,678 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:32,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437193159] [2021-10-07 15:48:32,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437193159] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:32,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:32,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:48:32,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003782743] [2021-10-07 15:48:32,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:48:32,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:32,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:48:32,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:32,682 INFO L87 Difference]: Start difference. First operand 24 states and 52 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 15:48:32,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:32,697 INFO L93 Difference]: Finished difference Result 20 states and 40 transitions. [2021-10-07 15:48:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:32,699 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 15:48:32,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:32,700 INFO L225 Difference]: With dead ends: 20 [2021-10-07 15:48:32,700 INFO L226 Difference]: Without dead ends: 20 [2021-10-07 15:48:32,701 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:48:32,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-07 15:48:32,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-10-07 15:48:32,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 2.1052631578947367) internal successors, (40), 19 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 15:48:32,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 40 transitions. [2021-10-07 15:48:32,708 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 40 transitions. Word has length 5 [2021-10-07 15:48:32,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:32,709 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 40 transitions. [2021-10-07 15:48:32,709 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 15:48:32,709 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 40 transitions. [2021-10-07 15:48:32,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-07 15:48:32,710 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:32,710 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:32,725 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 15:48:32,911 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 15:48:32,912 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 15:48:32,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:32,913 INFO L82 PathProgramCache]: Analyzing trace with hash 785839339, now seen corresponding path program 1 times [2021-10-07 15:48:32,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:32,914 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732180904] [2021-10-07 15:48:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:32,914 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:32,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:32,915 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 15:48:32,916 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 15:48:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:32,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:48:32,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:32,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:32,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:33,015 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 15:48:33,016 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:33,016 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732180904] [2021-10-07 15:48:33,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732180904] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:33,016 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:33,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:48:33,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598352874] [2021-10-07 15:48:33,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:33,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:33,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:33,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:33,019 INFO L87 Difference]: Start difference. First operand 20 states and 40 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 15:48:33,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:33,032 INFO L93 Difference]: Finished difference Result 26 states and 54 transitions. [2021-10-07 15:48:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:33,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 11 [2021-10-07 15:48:33,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:33,035 INFO L225 Difference]: With dead ends: 26 [2021-10-07 15:48:33,035 INFO L226 Difference]: Without dead ends: 26 [2021-10-07 15:48:33,036 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:33,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-07 15:48:33,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-10-07 15:48:33,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 2.16) internal successors, (54), 25 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:33,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 54 transitions. [2021-10-07 15:48:33,043 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 54 transitions. Word has length 11 [2021-10-07 15:48:33,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:33,043 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 54 transitions. [2021-10-07 15:48:33,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 15:48:33,044 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 54 transitions. [2021-10-07 15:48:33,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-07 15:48:33,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:33,045 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:33,065 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-07 15:48:33,265 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 15:48:33,266 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 15:48:33,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:33,267 INFO L82 PathProgramCache]: Analyzing trace with hash 2001005161, now seen corresponding path program 1 times [2021-10-07 15:48:33,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:33,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625746238] [2021-10-07 15:48:33,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:33,268 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:33,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:33,269 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 15:48:33,272 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 15:48:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:33,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:48:33,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:33,377 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 15:48:33,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:33,443 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 15:48:33,443 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:33,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625746238] [2021-10-07 15:48:33,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625746238] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:33,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:33,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-07 15:48:33,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124133645] [2021-10-07 15:48:33,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:48:33,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:33,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:48:33,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:48:33,446 INFO L87 Difference]: Start difference. First operand 26 states and 54 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:33,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:33,468 INFO L93 Difference]: Finished difference Result 32 states and 68 transitions. [2021-10-07 15:48:33,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:48:33,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 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 12 [2021-10-07 15:48:33,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:33,469 INFO L225 Difference]: With dead ends: 32 [2021-10-07 15:48:33,469 INFO L226 Difference]: Without dead ends: 32 [2021-10-07 15:48:33,469 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:48:33,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-07 15:48:33,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-10-07 15:48:33,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 31 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:33,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 68 transitions. [2021-10-07 15:48:33,474 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 68 transitions. Word has length 12 [2021-10-07 15:48:33,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:33,474 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 68 transitions. [2021-10-07 15:48:33,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:33,475 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 68 transitions. [2021-10-07 15:48:33,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-07 15:48:33,475 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:33,476 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:33,489 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 15:48:33,689 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 15:48:33,690 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 15:48:33,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:33,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1016439979, now seen corresponding path program 2 times [2021-10-07 15:48:33,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:33,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811539278] [2021-10-07 15:48:33,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:48:33,692 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:33,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:33,693 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 15:48:33,694 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 15:48:33,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:48:33,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:33,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:48:33,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:33,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:48:33,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:48:33,814 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:33,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811539278] [2021-10-07 15:48:33,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811539278] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:48:33,815 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:48:33,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-07 15:48:33,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971163396] [2021-10-07 15:48:33,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:48:33,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:33,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:48:33,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:33,817 INFO L87 Difference]: Start difference. First operand 32 states and 68 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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 15:48:33,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:33,828 INFO L93 Difference]: Finished difference Result 42 states and 92 transitions. [2021-10-07 15:48:33,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:48:33,828 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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 13 [2021-10-07 15:48:33,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:33,831 INFO L225 Difference]: With dead ends: 42 [2021-10-07 15:48:33,831 INFO L226 Difference]: Without dead ends: 42 [2021-10-07 15:48:33,831 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:48:33,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-07 15:48:33,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-10-07 15:48:33,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 2.2439024390243905) internal successors, (92), 41 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 92 transitions. [2021-10-07 15:48:33,844 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 92 transitions. Word has length 13 [2021-10-07 15:48:33,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:33,845 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 92 transitions. [2021-10-07 15:48:33,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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 15:48:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 92 transitions. [2021-10-07 15:48:33,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-07 15:48:33,847 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:33,847 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:33,868 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 15:48:34,060 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 15:48:34,061 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 15:48:34,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:34,061 INFO L82 PathProgramCache]: Analyzing trace with hash 177291547, now seen corresponding path program 1 times [2021-10-07 15:48:34,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:34,062 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [367249987] [2021-10-07 15:48:34,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:48:34,062 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:34,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:34,063 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 15:48:34,066 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 15:48:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:34,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-07 15:48:34,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:34,200 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:48:34,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:48:34,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:34,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [367249987] [2021-10-07 15:48:34,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [367249987] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:34,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:34,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-07 15:48:34,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727509073] [2021-10-07 15:48:34,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-07 15:48:34,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:34,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-07 15:48:34,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:48:34,328 INFO L87 Difference]: Start difference. First operand 42 states and 92 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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 15:48:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:34,352 INFO L93 Difference]: Finished difference Result 52 states and 116 transitions. [2021-10-07 15:48:34,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-07 15:48:34,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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 14 [2021-10-07 15:48:34,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:34,354 INFO L225 Difference]: With dead ends: 52 [2021-10-07 15:48:34,354 INFO L226 Difference]: Without dead ends: 52 [2021-10-07 15:48:34,354 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 14.3ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-07 15:48:34,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-10-07 15:48:34,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-10-07 15:48:34,371 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 15:48:34,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 116 transitions. [2021-10-07 15:48:34,372 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 116 transitions. Word has length 14 [2021-10-07 15:48:34,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:34,373 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 116 transitions. [2021-10-07 15:48:34,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 5 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 15:48:34,374 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 116 transitions. [2021-10-07 15:48:34,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:48:34,375 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:34,375 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:34,390 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 15:48:34,587 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 15:48:34,588 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 15:48:34,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:34,589 INFO L82 PathProgramCache]: Analyzing trace with hash -66506069, now seen corresponding path program 2 times [2021-10-07 15:48:34,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:34,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019801561] [2021-10-07 15:48:34,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:48:34,590 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:34,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:34,591 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 15:48:34,602 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 15:48:34,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:48:34,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:34,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:48:34,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:34,869 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 15:48:34,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:48:35,145 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:35,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019801561] [2021-10-07 15:48:35,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019801561] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:35,146 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:35,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2021-10-07 15:48:35,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056076136] [2021-10-07 15:48:35,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-07 15:48:35,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-07 15:48:35,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-10-07 15:48:35,148 INFO L87 Difference]: Start difference. First operand 52 states and 116 transitions. Second operand has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 15:48:35,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:35,605 INFO L93 Difference]: Finished difference Result 199 states and 429 transitions. [2021-10-07 15:48:35,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-07 15:48:35,606 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 15 [2021-10-07 15:48:35,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:35,608 INFO L225 Difference]: With dead ends: 199 [2021-10-07 15:48:35,608 INFO L226 Difference]: Without dead ends: 184 [2021-10-07 15:48:35,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 396.1ms TimeCoverageRelationStatistics Valid=125, Invalid=337, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:48:35,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-10-07 15:48:35,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 106. [2021-10-07 15:48:35,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.6) internal successors, (273), 105 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:35,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 273 transitions. [2021-10-07 15:48:35,616 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 273 transitions. Word has length 15 [2021-10-07 15:48:35,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:35,617 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 273 transitions. [2021-10-07 15:48:35,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.1818181818181817) internal successors, (24), 11 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 15:48:35,617 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 273 transitions. [2021-10-07 15:48:35,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:48:35,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:35,619 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:35,631 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 15:48:35,831 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 15:48:35,831 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 15:48:35,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:35,832 INFO L82 PathProgramCache]: Analyzing trace with hash 1255334343, now seen corresponding path program 3 times [2021-10-07 15:48:35,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:35,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328705458] [2021-10-07 15:48:35,834 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:48:35,834 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:35,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:35,835 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 15:48:35,874 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 15:48:35,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:48:35,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:35,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:48:35,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:36,199 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 15:48:36,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:36,578 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 15:48:36,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:36,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328705458] [2021-10-07 15:48:36,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328705458] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:36,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:36,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:48:36,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119454063] [2021-10-07 15:48:36,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:48:36,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:36,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:48:36,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:36,581 INFO L87 Difference]: Start difference. First operand 106 states and 273 transitions. Second operand has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 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 15:48:37,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:37,416 INFO L93 Difference]: Finished difference Result 279 states and 650 transitions. [2021-10-07 15:48:37,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-07 15:48:37,417 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 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 15 [2021-10-07 15:48:37,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:37,420 INFO L225 Difference]: With dead ends: 279 [2021-10-07 15:48:37,420 INFO L226 Difference]: Without dead ends: 274 [2021-10-07 15:48:37,421 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 776.4ms TimeCoverageRelationStatistics Valid=183, Invalid=519, Unknown=0, NotChecked=0, Total=702 [2021-10-07 15:48:37,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2021-10-07 15:48:37,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 140. [2021-10-07 15:48:37,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 2.7841726618705036) internal successors, (387), 139 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 15:48:37,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 387 transitions. [2021-10-07 15:48:37,432 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 387 transitions. Word has length 15 [2021-10-07 15:48:37,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:37,432 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 387 transitions. [2021-10-07 15:48:37,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0833333333333335) internal successors, (25), 12 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 15:48:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 387 transitions. [2021-10-07 15:48:37,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-07 15:48:37,434 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:37,434 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:37,449 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 15:48:37,647 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 15:48:37,648 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 15:48:37,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:37,649 INFO L82 PathProgramCache]: Analyzing trace with hash -523675037, now seen corresponding path program 4 times [2021-10-07 15:48:37,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:37,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013432535] [2021-10-07 15:48:37,650 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:48:37,650 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:37,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:37,652 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 15:48:37,692 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 15:48:37,785 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:48:37,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:37,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:48:37,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:37,994 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 15:48:37,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:38,404 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 15:48:38,404 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:38,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013432535] [2021-10-07 15:48:38,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013432535] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:38,404 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:38,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-07 15:48:38,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979939623] [2021-10-07 15:48:38,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:48:38,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:38,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:48:38,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:48:38,409 INFO L87 Difference]: Start difference. First operand 140 states and 387 transitions. Second operand has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 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 15:48:39,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:39,001 INFO L93 Difference]: Finished difference Result 297 states and 776 transitions. [2021-10-07 15:48:39,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:48:39,002 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 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 15 [2021-10-07 15:48:39,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:39,005 INFO L225 Difference]: With dead ends: 297 [2021-10-07 15:48:39,005 INFO L226 Difference]: Without dead ends: 292 [2021-10-07 15:48:39,006 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 585.6ms TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2021-10-07 15:48:39,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-10-07 15:48:39,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 174. [2021-10-07 15:48:39,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 3.005780346820809) internal successors, (520), 173 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:39,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 520 transitions. [2021-10-07 15:48:39,035 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 520 transitions. Word has length 15 [2021-10-07 15:48:39,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:39,035 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 520 transitions. [2021-10-07 15:48:39,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.0) internal successors, (24), 12 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 15:48:39,036 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 520 transitions. [2021-10-07 15:48:39,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:48:39,037 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:39,037 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:39,053 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 15:48:39,250 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 15:48:39,250 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 15:48:39,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:39,251 INFO L82 PathProgramCache]: Analyzing trace with hash 965702427, now seen corresponding path program 5 times [2021-10-07 15:48:39,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:39,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987538259] [2021-10-07 15:48:39,252 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:48:39,252 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:39,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:39,253 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 15:48:39,259 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 15:48:39,378 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-10-07 15:48:39,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:39,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-07 15:48:39,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:39,499 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:48:39,499 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:39,695 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-07 15:48:39,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:39,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987538259] [2021-10-07 15:48:39,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987538259] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:39,696 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:39,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:48:39,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262423926] [2021-10-07 15:48:39,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:48:39,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:39,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:48:39,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:48:39,698 INFO L87 Difference]: Start difference. First operand 174 states and 520 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 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 15:48:39,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:39,766 INFO L93 Difference]: Finished difference Result 200 states and 550 transitions. [2021-10-07 15:48:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:48:39,766 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 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 16 [2021-10-07 15:48:39,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:39,768 INFO L225 Difference]: With dead ends: 200 [2021-10-07 15:48:39,768 INFO L226 Difference]: Without dead ends: 182 [2021-10-07 15:48:39,768 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 72.7ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:48:39,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-10-07 15:48:39,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 134. [2021-10-07 15:48:39,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 133 states have (on average 2.6842105263157894) internal successors, (357), 133 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:39,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 357 transitions. [2021-10-07 15:48:39,775 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 357 transitions. Word has length 16 [2021-10-07 15:48:39,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:39,775 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 357 transitions. [2021-10-07 15:48:39,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 9 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 15:48:39,775 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 357 transitions. [2021-10-07 15:48:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-07 15:48:39,776 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:39,776 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:39,792 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 15:48:39,989 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 15:48:39,990 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 15:48:39,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:39,991 INFO L82 PathProgramCache]: Analyzing trace with hash 972233029, now seen corresponding path program 6 times [2021-10-07 15:48:39,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:39,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910407913] [2021-10-07 15:48:39,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-07 15:48:39,993 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:39,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:39,994 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 15:48:40,006 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 15:48:40,159 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2021-10-07 15:48:40,159 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:40,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-07 15:48:40,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:48:40,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:40,502 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-07 15:48:40,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:40,503 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910407913] [2021-10-07 15:48:40,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910407913] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:40,503 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:40,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-07 15:48:40,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483068828] [2021-10-07 15:48:40,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-07 15:48:40,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:40,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-07 15:48:40,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-10-07 15:48:40,505 INFO L87 Difference]: Start difference. First operand 134 states and 357 transitions. Second operand has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 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 15:48:40,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:40,575 INFO L93 Difference]: Finished difference Result 152 states and 395 transitions. [2021-10-07 15:48:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-07 15:48:40,575 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 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 16 [2021-10-07 15:48:40,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:40,579 INFO L225 Difference]: With dead ends: 152 [2021-10-07 15:48:40,579 INFO L226 Difference]: Without dead ends: 152 [2021-10-07 15:48:40,580 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 83.5ms TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:48:40,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2021-10-07 15:48:40,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 122. [2021-10-07 15:48:40,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 2.5454545454545454) internal successors, (308), 121 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:40,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 308 transitions. [2021-10-07 15:48:40,585 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 308 transitions. Word has length 16 [2021-10-07 15:48:40,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:40,585 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 308 transitions. [2021-10-07 15:48:40,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.7) internal successors, (27), 9 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 15:48:40,586 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 308 transitions. [2021-10-07 15:48:40,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:48:40,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:40,587 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:40,603 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 15:48:40,799 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 15:48:40,800 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 15:48:40,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:40,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1546028253, now seen corresponding path program 7 times [2021-10-07 15:48:40,802 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:40,802 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855675973] [2021-10-07 15:48:40,802 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-07 15:48:40,802 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:40,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:40,804 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 15:48:40,805 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 15:48:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:48:40,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:48:40,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:41,334 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 15:48:41,334 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:41,794 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:41,794 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:41,795 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855675973] [2021-10-07 15:48:41,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855675973] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:41,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:41,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:48:41,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825274465] [2021-10-07 15:48:41,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:48:41,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:41,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:48:41,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:48:41,798 INFO L87 Difference]: Start difference. First operand 122 states and 308 transitions. Second operand has 16 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 15:48:42,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:42,320 INFO L93 Difference]: Finished difference Result 248 states and 593 transitions. [2021-10-07 15:48:42,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-07 15:48:42,320 INFO L78 Accepts]: Start accepts. Automaton has has 16 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 17 [2021-10-07 15:48:42,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:42,324 INFO L225 Difference]: With dead ends: 248 [2021-10-07 15:48:42,324 INFO L226 Difference]: Without dead ends: 196 [2021-10-07 15:48:42,327 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 592.7ms TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2021-10-07 15:48:42,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-10-07 15:48:42,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 106. [2021-10-07 15:48:42,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 2.419047619047619) internal successors, (254), 105 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:42,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 254 transitions. [2021-10-07 15:48:42,332 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 254 transitions. Word has length 17 [2021-10-07 15:48:42,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:42,333 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 254 transitions. [2021-10-07 15:48:42,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 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 15:48:42,333 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 254 transitions. [2021-10-07 15:48:42,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:48:42,334 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:42,334 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:42,346 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 15:48:42,546 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 15:48:42,546 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 15:48:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:42,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1662779547, now seen corresponding path program 8 times [2021-10-07 15:48:42,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:42,548 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1906880678] [2021-10-07 15:48:42,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:48:42,549 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:42,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:42,550 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 15:48:42,551 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 15:48:42,731 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-07 15:48:42,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:42,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-07 15:48:42,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:43,112 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:43,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:43,644 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1906880678] [2021-10-07 15:48:43,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1906880678] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:43,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:43,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2021-10-07 15:48:43,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888150682] [2021-10-07 15:48:43,645 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-07 15:48:43,645 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:43,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-07 15:48:43,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2021-10-07 15:48:43,646 INFO L87 Difference]: Start difference. First operand 106 states and 254 transitions. Second operand has 16 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 15:48:44,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:44,430 INFO L93 Difference]: Finished difference Result 308 states and 766 transitions. [2021-10-07 15:48:44,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-07 15:48:44,431 INFO L78 Accepts]: Start accepts. Automaton has has 16 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 17 [2021-10-07 15:48:44,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:44,437 INFO L225 Difference]: With dead ends: 308 [2021-10-07 15:48:44,437 INFO L226 Difference]: Without dead ends: 250 [2021-10-07 15:48:44,437 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 789.5ms TimeCoverageRelationStatistics Valid=199, Invalid=557, Unknown=0, NotChecked=0, Total=756 [2021-10-07 15:48:44,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2021-10-07 15:48:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 132. [2021-10-07 15:48:44,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 2.564885496183206) internal successors, (336), 131 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:44,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 336 transitions. [2021-10-07 15:48:44,452 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 336 transitions. Word has length 17 [2021-10-07 15:48:44,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:44,453 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 336 transitions. [2021-10-07 15:48:44,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 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 15:48:44,453 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 336 transitions. [2021-10-07 15:48:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-07 15:48:44,456 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:44,456 INFO L512 BasicCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:44,470 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 15:48:44,657 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 15:48:44,658 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 15:48:44,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:44,659 INFO L82 PathProgramCache]: Analyzing trace with hash 391453839, now seen corresponding path program 9 times [2021-10-07 15:48:44,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:44,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [719125500] [2021-10-07 15:48:44,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:48:44,660 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:44,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:44,662 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 15:48:44,663 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 15:48:44,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-07 15:48:44,870 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:44,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:48:44,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:45,135 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:45,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:45,600 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:48:45,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:45,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [719125500] [2021-10-07 15:48:45,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [719125500] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:45,601 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:45,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 13 [2021-10-07 15:48:45,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900560434] [2021-10-07 15:48:45,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:48:45,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:45,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:48:45,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:48:45,605 INFO L87 Difference]: Start difference. First operand 132 states and 336 transitions. Second operand has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:46,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:46,663 INFO L93 Difference]: Finished difference Result 443 states and 1117 transitions. [2021-10-07 15:48:46,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-10-07 15:48:46,663 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 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 15:48:46,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:46,668 INFO L225 Difference]: With dead ends: 443 [2021-10-07 15:48:46,668 INFO L226 Difference]: Without dead ends: 412 [2021-10-07 15:48:46,669 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1013.5ms TimeCoverageRelationStatistics Valid=269, Invalid=787, Unknown=0, NotChecked=0, Total=1056 [2021-10-07 15:48:46,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-10-07 15:48:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 214. [2021-10-07 15:48:46,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 213 states have (on average 2.7183098591549295) internal successors, (579), 213 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 15:48:46,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 579 transitions. [2021-10-07 15:48:46,687 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 579 transitions. Word has length 17 [2021-10-07 15:48:46,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:46,692 INFO L470 AbstractCegarLoop]: Abstraction has 214 states and 579 transitions. [2021-10-07 15:48:46,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.0714285714285716) internal successors, (29), 14 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:46,692 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 579 transitions. [2021-10-07 15:48:46,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-07 15:48:46,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:48:46,693 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-07 15:48:46,710 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 15:48:46,910 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 15:48:46,911 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 15:48:46,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:48:46,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1953575107, now seen corresponding path program 10 times [2021-10-07 15:48:46,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:48:46,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134699897] [2021-10-07 15:48:46,913 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:48:46,913 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:48:46,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:48:46,914 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 15:48:46,915 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 15:48:47,112 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:48:47,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:48:47,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-07 15:48:47,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:48:47,610 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 15:48:47,610 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:48:48,278 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 15:48:48,278 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:48:48,278 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134699897] [2021-10-07 15:48:48,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134699897] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-07 15:48:48,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-07 15:48:48,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-10-07 15:48:48,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037482062] [2021-10-07 15:48:48,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-07 15:48:48,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:48:48,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-07 15:48:48,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:48:48,281 INFO L87 Difference]: Start difference. First operand 214 states and 579 transitions. Second operand has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:48,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:48:48,542 INFO L93 Difference]: Finished difference Result 217 states and 585 transitions. [2021-10-07 15:48:48,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:48:48,542 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 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 15:48:48,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:48:48,543 INFO L225 Difference]: With dead ends: 217 [2021-10-07 15:48:48,543 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 15:48:48,543 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 467.8ms TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-10-07 15:48:48,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 15:48:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 15:48:48,543 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 15:48:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 15:48:48,544 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-10-07 15:48:48,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:48:48,544 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 15:48:48,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.9411764705882353) internal successors, (33), 17 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:48:48,544 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 15:48:48,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 15:48:48,547 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:48:48,548 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:48:48,548 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:48:48,548 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:48:48,548 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:48:48,549 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:48:48,549 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:48:48,549 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:48:48,549 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:48:48,549 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:48:48,549 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:48:48,550 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:48:48,562 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 15:48:48,762 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 15:48:48,768 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:48:48,769 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:48:48,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:48:48 BasicIcfg [2021-10-07 15:48:48,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:48:48,771 INFO L168 Benchmark]: Toolchain (without parser) took 28779.64 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 126.3 MB in the beginning and 110.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. [2021-10-07 15:48:48,771 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:48:48,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.24 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:48:48,772 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.41 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:48:48,773 INFO L168 Benchmark]: Boogie Preprocessor took 39.95 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 112.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:48:48,773 INFO L168 Benchmark]: RCFGBuilder took 589.33 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 98.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-10-07 15:48:48,773 INFO L168 Benchmark]: TraceAbstraction took 27822.94 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 97.4 MB in the beginning and 110.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. [2021-10-07 15:48:48,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 122.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 269.24 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 43.41 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.95 ms. Allocated memory is still 151.0 MB. Free memory was 113.6 MB in the beginning and 112.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 589.33 ms. Allocated memory is still 151.0 MB. Free memory was 112.2 MB in the beginning and 98.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 27822.94 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 97.4 MB in the beginning and 110.2 MB in the end (delta: -12.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8753.3ms, 97 PlacesBefore, 30 PlacesAfterwards, 101 TransitionsBefore, 25 TransitionsAfterwards, 1360 CoEnabledTransitionPairs, 6 FixpointIterations, 54 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 9 ChoiceCompositions, 111 TotalNumberOfCompositions, 1314 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1314, positive: 1314, positive conditional: 0, positive unconditional: 1314, 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: 849, positive: 849, positive conditional: 0, positive unconditional: 849, 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: 849, positive: 839, positive conditional: 0, positive unconditional: 839, negative: 10, negative conditional: 0, negative unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 10, positive: 10, positive conditional: 0, positive unconditional: 10, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 235, positive: 235, positive conditional: 0, positive unconditional: 235, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1314, positive: 465, positive conditional: 0, positive unconditional: 465, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 849, unknown conditional: 0, unknown unconditional: 849] , Statistics on independence cache: Total cache size (in pairs): 26, Positive cache size: 26, Positive conditional cache size: 0, Positive unconditional cache size: 26, 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: 91]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 91]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 92]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 92]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 93]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 93]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 94]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 94]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 97]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 81]: 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, 119 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 27664.9ms, OverallIterations: 18, TraceHistogramMax: 4, EmptinessCheckTime: 25.9ms, AutomataDifference: 4938.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8807.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 335 SDtfs, 1200 SDslu, 1074 SDs, 0 SdLazy, 717 SolverSat, 325 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1163.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 472 GetRequests, 268 SyntacticMatches, 2 SemanticMatches, 202 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 4893.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=214occurred in iteration=17, InterpolantAutomatonStates: 178, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 187.5ms AutomataMinimizationTime, 18 MinimizatonAttempts, 814 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 153.7ms SsaConstructionTime, 577.3ms SatisfiabilityAnalysisTime, 7851.5ms InterpolantComputationTime, 214 NumberOfCodeBlocks, 212 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 392 ConstructedInterpolants, 0 QuantifiedInterpolants, 2986 SizeOfPredicates, 68 NumberOfNonLiveVariables, 1067 ConjunctsInSsa, 132 ConjunctsInUnsatCore, 36 InterpolantComputations, 14 PerfectInterpolantSequences, 24/206 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 15:48:48,823 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...