/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-5.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-06 21:20:43,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-06 21:20:43,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-06 21:20:43,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-06 21:20:43,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-06 21:20:43,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-06 21:20:43,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-06 21:20:43,504 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-06 21:20:43,536 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-06 21:20:43,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-06 21:20:43,537 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-06 21:20:43,537 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-06 21:20:43,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-06 21:20:43,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-06 21:20:43,539 INFO L138 SettingsManager]: * Use SBE=true [2021-10-06 21:20:43,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-06 21:20:43,539 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-06 21:20:43,540 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-06 21:20:43,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-06 21:20:43,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-06 21:20:43,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-06 21:20:43,541 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-06 21:20:43,541 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-06 21:20:43,541 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-06 21:20:43,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-06 21:20:43,541 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-06 21:20:43,542 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-06 21:20:43,542 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-06 21:20:43,542 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-06 21:20:43,542 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-06 21:20:43,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-06 21:20:43,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-06 21:20:43,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-06 21:20:43,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:20:43,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-06 21:20:43,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-06 21:20:43,544 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-06 21:20:43,544 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-06 21:20:43,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-06 21:20:43,545 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-06 21:20:43,546 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-06 21:20:43,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-06 21:20:44,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-06 21:20:44,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-06 21:20:44,028 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-06 21:20:44,029 INFO L275 PluginConnector]: CDTParser initialized [2021-10-06 21:20:44,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel/misc-5.wvr.c [2021-10-06 21:20:44,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c01d4fa03/915fd2a74e0249209f6e64df6d596320/FLAG21cda1262 [2021-10-06 21:20:44,746 INFO L306 CDTParser]: Found 1 translation units. [2021-10-06 21:20:44,746 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel/misc-5.wvr.c [2021-10-06 21:20:44,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c01d4fa03/915fd2a74e0249209f6e64df6d596320/FLAG21cda1262 [2021-10-06 21:20:45,079 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c01d4fa03/915fd2a74e0249209f6e64df6d596320 [2021-10-06 21:20:45,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-06 21:20:45,093 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-06 21:20:45,098 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-06 21:20:45,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-06 21:20:45,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-06 21:20:45,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:20:45" (1/1) ... [2021-10-06 21:20:45,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4612528e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:20:45, skipping insertion in model container [2021-10-06 21:20:45,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 09:20:45" (1/1) ... [2021-10-06 21:20:45,117 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-06 21:20:45,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-06 21:20:45,435 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-5.wvr.c[2633,2646] [2021-10-06 21:20:45,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:20:45,468 INFO L203 MainTranslator]: Completed pre-run [2021-10-06 21:20:45,542 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-5.wvr.c[2633,2646] [2021-10-06 21:20:45,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-06 21:20:45,569 INFO L208 MainTranslator]: Completed translation [2021-10-06 21:20:45,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:20:45 WrapperNode [2021-10-06 21:20:45,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-06 21:20:45,571 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-06 21:20:45,571 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-06 21:20:45,571 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-06 21:20:45,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:20:45" (1/1) ... [2021-10-06 21:20:45,593 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:20:45" (1/1) ... [2021-10-06 21:20:45,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-06 21:20:45,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-06 21:20:45,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-06 21:20:45,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-06 21:20:45,638 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:20:45" (1/1) ... [2021-10-06 21:20:45,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:20:45" (1/1) ... [2021-10-06 21:20:45,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:20:45" (1/1) ... [2021-10-06 21:20:45,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:20:45" (1/1) ... [2021-10-06 21:20:45,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:20:45" (1/1) ... [2021-10-06 21:20:45,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:20:45" (1/1) ... [2021-10-06 21:20:45,660 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:20:45" (1/1) ... [2021-10-06 21:20:45,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-06 21:20:45,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-06 21:20:45,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-06 21:20:45,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-06 21:20:45,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:20:45" (1/1) ... [2021-10-06 21:20:45,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-06 21:20:45,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-06 21:20:45,710 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) [2021-10-06 21:20:45,733 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 [2021-10-06 21:20:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-06 21:20:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-06 21:20:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-06 21:20:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-06 21:20:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-10-06 21:20:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-10-06 21:20:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-06 21:20:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-06 21:20:45,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-10-06 21:20:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-10-06 21:20:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-06 21:20:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-06 21:20:45,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-06 21:20:45,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-06 21:20:45,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-06 21:20:45,806 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-06 21:20:46,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-06 21:20:46,634 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-06 21:20:46,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:20:46 BoogieIcfgContainer [2021-10-06 21:20:46,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-06 21:20:46,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-06 21:20:46,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-06 21:20:46,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-06 21:20:46,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 09:20:45" (1/3) ... [2021-10-06 21:20:46,653 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1510b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:20:46, skipping insertion in model container [2021-10-06 21:20:46,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 09:20:45" (2/3) ... [2021-10-06 21:20:46,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1510b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 09:20:46, skipping insertion in model container [2021-10-06 21:20:46,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 09:20:46" (3/3) ... [2021-10-06 21:20:46,657 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-5.wvr.c [2021-10-06 21:20:46,668 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-06 21:20:46,669 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2021-10-06 21:20:46,669 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-06 21:20:46,731 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,731 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,731 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,732 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,732 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,732 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,732 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,732 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,733 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,733 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,733 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,733 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,734 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,734 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,734 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,734 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,734 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,734 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,735 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,735 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,735 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,736 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,737 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,737 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,738 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,738 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,738 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,739 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,739 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,739 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,740 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,740 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,741 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,741 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,741 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,741 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,741 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,742 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,742 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,742 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,742 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,742 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,743 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,743 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,743 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,743 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,744 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,745 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,745 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,745 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,750 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,750 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,750 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,751 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,751 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,751 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,751 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,752 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,752 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,755 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,756 WARN L313 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,758 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,759 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~nondet8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,760 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork2_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,760 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,761 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-06 21:20:46,768 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-10-06 21:20:46,813 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-06 21:20:46,821 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 [2021-10-06 21:20:46,821 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-10-06 21:20:46,839 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-06 21:20:46,852 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 109 transitions, 242 flow [2021-10-06 21:20:46,856 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 109 transitions, 242 flow [2021-10-06 21:20:46,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 112 places, 109 transitions, 242 flow [2021-10-06 21:20:46,912 INFO L129 PetriNetUnfolder]: 7/106 cut-off events. [2021-10-06 21:20:46,913 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-10-06 21:20:46,918 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 7/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 109 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 77. Up to 3 conditions per place. [2021-10-06 21:20:46,921 INFO L116 LiptonReduction]: Number of co-enabled transitions 1322 [2021-10-06 21:20:58,721 INFO L131 LiptonReduction]: Checked pairs total: 2805 [2021-10-06 21:20:58,721 INFO L133 LiptonReduction]: Total number of compositions: 103 [2021-10-06 21:20:58,736 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 41 transitions, 106 flow [2021-10-06 21:20:58,789 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:58,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:58,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-06 21:20:58,804 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:58,806 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-06 21:20:58,806 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:20:58,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:58,818 INFO L82 PathProgramCache]: Analyzing trace with hash 479, now seen corresponding path program 1 times [2021-10-06 21:20:58,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:58,844 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776250422] [2021-10-06 21:20:58,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:58,846 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:58,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:58,851 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) [2021-10-06 21:20:58,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-06 21:20:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:58,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-06 21:20:58,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:58,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:58,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:58,928 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:58,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776250422] [2021-10-06 21:20:58,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776250422] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:20:58,930 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:20:58,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-06 21:20:58,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910046758] [2021-10-06 21:20:58,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-06 21:20:58,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:58,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-06 21:20:58,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-06 21:20:58,966 INFO L87 Difference]: Start difference. First operand has 255 states, 241 states have (on average 3.5145228215767634) internal successors, (847), 254 states have internal predecessors, (847), 0 states have call successors, (0), 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) [2021-10-06 21:20:59,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:59,003 INFO L93 Difference]: Finished difference Result 252 states and 844 transitions. [2021-10-06 21:20:59,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-06 21:20:59,005 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 [2021-10-06 21:20:59,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:59,022 INFO L225 Difference]: With dead ends: 252 [2021-10-06 21:20:59,022 INFO L226 Difference]: Without dead ends: 252 [2021-10-06 21:20:59,023 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 [2021-10-06 21:20:59,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2021-10-06 21:20:59,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2021-10-06 21:20:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 241 states have (on average 3.5020746887966805) internal successors, (844), 251 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:59,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 844 transitions. [2021-10-06 21:20:59,098 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 844 transitions. Word has length 1 [2021-10-06 21:20:59,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:59,099 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 844 transitions. [2021-10-06 21:20:59,099 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) [2021-10-06 21:20:59,099 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 844 transitions. [2021-10-06 21:20:59,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:20:59,100 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:59,100 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:20:59,110 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:59,303 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 [2021-10-06 21:20:59,304 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:20:59,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:59,305 INFO L82 PathProgramCache]: Analyzing trace with hash 472252, now seen corresponding path program 1 times [2021-10-06 21:20:59,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:59,307 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1656207044] [2021-10-06 21:20:59,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:59,307 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:59,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:59,308 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) [2021-10-06 21:20:59,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-06 21:20:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:59,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:20:59,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:20:59,562 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:20:59,563 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-06 21:20:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:59,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:20:59,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:20:59,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:20:59,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1656207044] [2021-10-06 21:20:59,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1656207044] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:20:59,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:20:59,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:20:59,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028345064] [2021-10-06 21:20:59,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:20:59,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:20:59,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:20:59,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:20:59,626 INFO L87 Difference]: Start difference. First operand 252 states and 844 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) [2021-10-06 21:20:59,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:20:59,679 INFO L93 Difference]: Finished difference Result 240 states and 813 transitions. [2021-10-06 21:20:59,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:20:59,679 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 [2021-10-06 21:20:59,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:20:59,684 INFO L225 Difference]: With dead ends: 240 [2021-10-06 21:20:59,684 INFO L226 Difference]: Without dead ends: 240 [2021-10-06 21:20:59,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.6ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:20:59,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-10-06 21:20:59,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 240. [2021-10-06 21:20:59,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 231 states have (on average 3.5194805194805197) internal successors, (813), 239 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:20:59,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 813 transitions. [2021-10-06 21:20:59,710 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 813 transitions. Word has length 3 [2021-10-06 21:20:59,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:20:59,711 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 813 transitions. [2021-10-06 21:20:59,712 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) [2021-10-06 21:20:59,712 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 813 transitions. [2021-10-06 21:20:59,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-06 21:20:59,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:20:59,713 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-06 21:20:59,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-06 21:20:59,925 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 [2021-10-06 21:20:59,926 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:20:59,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:20:59,927 INFO L82 PathProgramCache]: Analyzing trace with hash 472253, now seen corresponding path program 1 times [2021-10-06 21:20:59,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:20:59,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575950833] [2021-10-06 21:20:59,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:20:59,929 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:20:59,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:20:59,930 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) [2021-10-06 21:20:59,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-06 21:20:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:20:59,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:20:59,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:00,161 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:21:00,164 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-06 21:21:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:00,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:00,360 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:00,360 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575950833] [2021-10-06 21:21:00,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575950833] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:21:00,361 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:21:00,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:21:00,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728494842] [2021-10-06 21:21:00,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:21:00,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:00,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:21:00,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:21:00,363 INFO L87 Difference]: Start difference. First operand 240 states and 813 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) [2021-10-06 21:21:00,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:00,416 INFO L93 Difference]: Finished difference Result 228 states and 782 transitions. [2021-10-06 21:21:00,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:21:00,417 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 [2021-10-06 21:21:00,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:00,421 INFO L225 Difference]: With dead ends: 228 [2021-10-06 21:21:00,421 INFO L226 Difference]: Without dead ends: 228 [2021-10-06 21:21:00,422 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:21:00,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2021-10-06 21:21:00,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2021-10-06 21:21:00,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 221 states have (on average 3.5384615384615383) internal successors, (782), 227 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:00,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 782 transitions. [2021-10-06 21:21:00,443 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 782 transitions. Word has length 3 [2021-10-06 21:21:00,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:00,443 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 782 transitions. [2021-10-06 21:21:00,444 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) [2021-10-06 21:21:00,444 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 782 transitions. [2021-10-06 21:21:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:21:00,444 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:00,445 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:21:00,468 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:00,666 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 [2021-10-06 21:21:00,667 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:00,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:00,667 INFO L82 PathProgramCache]: Analyzing trace with hash 453847193, now seen corresponding path program 1 times [2021-10-06 21:21:00,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:00,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593965484] [2021-10-06 21:21:00,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:21:00,669 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:00,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:00,670 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) [2021-10-06 21:21:00,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-06 21:21:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:00,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:21:00,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:00,899 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:21:00,900 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 4 case distinctions, treesize of input 18 treesize of output 49 [2021-10-06 21:21:01,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:01,013 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:01,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:01,106 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:01,106 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593965484] [2021-10-06 21:21:01,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593965484] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:21:01,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:21:01,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:21:01,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73674696] [2021-10-06 21:21:01,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:21:01,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:01,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:21:01,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:21:01,109 INFO L87 Difference]: Start difference. First operand 228 states and 782 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:01,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:01,149 INFO L93 Difference]: Finished difference Result 210 states and 723 transitions. [2021-10-06 21:21:01,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:21:01,150 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-06 21:21:01,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:01,153 INFO L225 Difference]: With dead ends: 210 [2021-10-06 21:21:01,153 INFO L226 Difference]: Without dead ends: 210 [2021-10-06 21:21:01,154 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:21:01,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-10-06 21:21:01,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 210. [2021-10-06 21:21:01,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 205 states have (on average 3.526829268292683) internal successors, (723), 209 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 723 transitions. [2021-10-06 21:21:01,170 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 723 transitions. Word has length 5 [2021-10-06 21:21:01,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:01,170 INFO L470 AbstractCegarLoop]: Abstraction has 210 states and 723 transitions. [2021-10-06 21:21:01,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:01,171 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 723 transitions. [2021-10-06 21:21:01,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-06 21:21:01,172 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:01,172 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-06 21:21:01,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:01,386 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 [2021-10-06 21:21:01,387 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:01,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:01,388 INFO L82 PathProgramCache]: Analyzing trace with hash 453847194, now seen corresponding path program 1 times [2021-10-06 21:21:01,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:01,405 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620414092] [2021-10-06 21:21:01,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:21:01,405 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:01,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:01,406 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) [2021-10-06 21:21:01,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-06 21:21:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:01,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-06 21:21:01,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:01,494 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:21:01,494 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-06 21:21:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:01,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:01,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:01,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620414092] [2021-10-06 21:21:01,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620414092] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:21:01,549 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:21:01,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-06 21:21:01,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300798956] [2021-10-06 21:21:01,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-06 21:21:01,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:01,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-06 21:21:01,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:21:01,552 INFO L87 Difference]: Start difference. First operand 210 states and 723 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) [2021-10-06 21:21:01,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:01,579 INFO L93 Difference]: Finished difference Result 192 states and 664 transitions. [2021-10-06 21:21:01,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:21:01,580 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 [2021-10-06 21:21:01,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:01,582 INFO L225 Difference]: With dead ends: 192 [2021-10-06 21:21:01,583 INFO L226 Difference]: Without dead ends: 192 [2021-10-06 21:21:01,583 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-06 21:21:01,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2021-10-06 21:21:01,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2021-10-06 21:21:01,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 189 states have (on average 3.513227513227513) internal successors, (664), 191 states have internal predecessors, (664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:01,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 664 transitions. [2021-10-06 21:21:01,594 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 664 transitions. Word has length 5 [2021-10-06 21:21:01,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:01,595 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 664 transitions. [2021-10-06 21:21:01,595 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) [2021-10-06 21:21:01,595 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 664 transitions. [2021-10-06 21:21:01,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:21:01,596 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:01,596 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:01,614 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:01,812 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 [2021-10-06 21:21:01,812 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:01,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:01,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1939498783, now seen corresponding path program 1 times [2021-10-06 21:21:01,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:01,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054592089] [2021-10-06 21:21:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:21:01,815 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:01,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:01,816 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) [2021-10-06 21:21:01,819 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-06 21:21:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:01,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-06 21:21:01,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:01,919 INFO L354 Elim1Store]: treesize reduction 38, result has 30.9 percent of original size [2021-10-06 21:21:01,919 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 22 [2021-10-06 21:21:01,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:01,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:02,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:02,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:02,041 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054592089] [2021-10-06 21:21:02,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054592089] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:21:02,042 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:21:02,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:21:02,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628638961] [2021-10-06 21:21:02,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-06 21:21:02,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:02,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-06 21:21:02,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:21:02,044 INFO L87 Difference]: Start difference. First operand 192 states and 664 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:02,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:02,084 INFO L93 Difference]: Finished difference Result 160 states and 536 transitions. [2021-10-06 21:21:02,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:21:02,085 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-06 21:21:02,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:02,087 INFO L225 Difference]: With dead ends: 160 [2021-10-06 21:21:02,087 INFO L226 Difference]: Without dead ends: 160 [2021-10-06 21:21:02,088 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-06 21:21:02,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-10-06 21:21:02,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2021-10-06 21:21:02,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 3.392405063291139) internal successors, (536), 159 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:02,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 536 transitions. [2021-10-06 21:21:02,096 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 536 transitions. Word has length 7 [2021-10-06 21:21:02,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:02,097 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 536 transitions. [2021-10-06 21:21:02,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:02,097 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 536 transitions. [2021-10-06 21:21:02,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-06 21:21:02,098 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:02,098 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:02,115 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:02,310 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 [2021-10-06 21:21:02,311 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:02,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:02,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1939498782, now seen corresponding path program 1 times [2021-10-06 21:21:02,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:02,314 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1973736791] [2021-10-06 21:21:02,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:21:02,314 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:02,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:02,315 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) [2021-10-06 21:21:02,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-06 21:21:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:02,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:21:02,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:02,567 INFO L354 Elim1Store]: treesize reduction 141, result has 23.8 percent of original size [2021-10-06 21:21:02,568 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 4 case distinctions, treesize of input 28 treesize of output 58 [2021-10-06 21:21:02,580 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 57 [2021-10-06 21:21:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:02,801 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:02,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:02,909 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:02,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1973736791] [2021-10-06 21:21:02,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1973736791] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:21:02,910 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:21:02,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-06 21:21:02,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224866130] [2021-10-06 21:21:02,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:21:02,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:02,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:21:02,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:21:02,912 INFO L87 Difference]: Start difference. First operand 160 states and 536 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) 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) [2021-10-06 21:21:02,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:02,939 INFO L93 Difference]: Finished difference Result 128 states and 408 transitions. [2021-10-06 21:21:02,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:21:02,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) 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 7 [2021-10-06 21:21:02,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:02,942 INFO L225 Difference]: With dead ends: 128 [2021-10-06 21:21:02,942 INFO L226 Difference]: Without dead ends: 128 [2021-10-06 21:21:02,943 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.8ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:21:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-10-06 21:21:02,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2021-10-06 21:21:02,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 3.2125984251968505) internal successors, (408), 127 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:02,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 408 transitions. [2021-10-06 21:21:02,949 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 408 transitions. Word has length 7 [2021-10-06 21:21:02,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:02,950 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 408 transitions. [2021-10-06 21:21:02,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) 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) [2021-10-06 21:21:02,950 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 408 transitions. [2021-10-06 21:21:02,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:21:02,952 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:02,952 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:02,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:03,153 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 [2021-10-06 21:21:03,153 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:03,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:03,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1950952428, now seen corresponding path program 1 times [2021-10-06 21:21:03,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:03,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615948568] [2021-10-06 21:21:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:21:03,156 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:03,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:03,157 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) [2021-10-06 21:21:03,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-06 21:21:03,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:03,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-06 21:21:03,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:03,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:03,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:03,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:03,314 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:03,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615948568] [2021-10-06 21:21:03,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615948568] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:21:03,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:21:03,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:21:03,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743762878] [2021-10-06 21:21:03,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:21:03,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:03,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:21:03,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:21:03,317 INFO L87 Difference]: Start difference. First operand 128 states and 408 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) [2021-10-06 21:21:03,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:03,342 INFO L93 Difference]: Finished difference Result 124 states and 368 transitions. [2021-10-06 21:21:03,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:21:03,342 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 16 [2021-10-06 21:21:03,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:03,343 INFO L225 Difference]: With dead ends: 124 [2021-10-06 21:21:03,344 INFO L226 Difference]: Without dead ends: 88 [2021-10-06 21:21:03,344 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.0ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:21:03,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-06 21:21:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2021-10-06 21:21:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 87 states have (on average 2.7471264367816093) internal successors, (239), 87 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:03,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 239 transitions. [2021-10-06 21:21:03,349 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 239 transitions. Word has length 16 [2021-10-06 21:21:03,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:03,349 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 239 transitions. [2021-10-06 21:21:03,349 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) [2021-10-06 21:21:03,350 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 239 transitions. [2021-10-06 21:21:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-06 21:21:03,351 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:03,351 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:03,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:03,564 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 [2021-10-06 21:21:03,568 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:03,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:03,568 INFO L82 PathProgramCache]: Analyzing trace with hash -932856150, now seen corresponding path program 2 times [2021-10-06 21:21:03,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:03,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1281776239] [2021-10-06 21:21:03,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:21:03,570 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:03,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:03,571 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) [2021-10-06 21:21:03,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-06 21:21:03,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-06 21:21:03,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:03,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-06 21:21:03,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:03,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:03,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:03,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:03,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:03,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1281776239] [2021-10-06 21:21:03,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1281776239] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:21:03,796 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:21:03,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-10-06 21:21:03,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039451735] [2021-10-06 21:21:03,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:21:03,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:03,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:21:03,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:21:03,798 INFO L87 Difference]: Start difference. First operand 88 states and 239 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 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) [2021-10-06 21:21:03,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:03,884 INFO L93 Difference]: Finished difference Result 218 states and 628 transitions. [2021-10-06 21:21:03,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:21:03,886 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 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 16 [2021-10-06 21:21:03,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:03,888 INFO L225 Difference]: With dead ends: 218 [2021-10-06 21:21:03,888 INFO L226 Difference]: Without dead ends: 172 [2021-10-06 21:21:03,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.9ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:21:03,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-06 21:21:03,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 168. [2021-10-06 21:21:03,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 167 states have (on average 3.0059880239520957) internal successors, (502), 167 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:03,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 502 transitions. [2021-10-06 21:21:03,898 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 502 transitions. Word has length 16 [2021-10-06 21:21:03,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:03,898 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 502 transitions. [2021-10-06 21:21:03,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 5 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) [2021-10-06 21:21:03,899 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 502 transitions. [2021-10-06 21:21:03,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:21:03,903 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:03,903 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:03,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:04,116 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 [2021-10-06 21:21:04,117 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:04,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:04,118 INFO L82 PathProgramCache]: Analyzing trace with hash -157764123, now seen corresponding path program 1 times [2021-10-06 21:21:04,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:04,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1684023112] [2021-10-06 21:21:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:21:04,119 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:04,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:04,120 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) [2021-10-06 21:21:04,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-06 21:21:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:04,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:21:04,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:04,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:04,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:04,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1684023112] [2021-10-06 21:21:04,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1684023112] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:21:04,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:21:04,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:21:04,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704041984] [2021-10-06 21:21:04,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:21:04,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:04,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:21:04,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:21:04,332 INFO L87 Difference]: Start difference. First operand 168 states and 502 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 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) [2021-10-06 21:21:04,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:04,345 INFO L93 Difference]: Finished difference Result 284 states and 806 transitions. [2021-10-06 21:21:04,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:21:04,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:21:04,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:04,350 INFO L225 Difference]: With dead ends: 284 [2021-10-06 21:21:04,350 INFO L226 Difference]: Without dead ends: 242 [2021-10-06 21:21:04,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:21:04,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-10-06 21:21:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 184. [2021-10-06 21:21:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9726775956284155) internal successors, (544), 183 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:04,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 544 transitions. [2021-10-06 21:21:04,361 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 544 transitions. Word has length 18 [2021-10-06 21:21:04,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:04,361 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 544 transitions. [2021-10-06 21:21:04,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 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) [2021-10-06 21:21:04,361 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 544 transitions. [2021-10-06 21:21:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-06 21:21:04,362 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:04,363 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:04,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:04,575 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 [2021-10-06 21:21:04,576 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:04,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:04,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1438384606, now seen corresponding path program 1 times [2021-10-06 21:21:04,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:04,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143745565] [2021-10-06 21:21:04,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:21:04,578 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:04,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:04,580 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) [2021-10-06 21:21:04,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-06 21:21:04,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:04,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-06 21:21:04,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:04,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:04,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:04,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:04,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143745565] [2021-10-06 21:21:04,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143745565] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-06 21:21:04,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-06 21:21:04,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2021-10-06 21:21:04,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107775758] [2021-10-06 21:21:04,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-06 21:21:04,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:04,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-06 21:21:04,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:21:04,798 INFO L87 Difference]: Start difference. First operand 184 states and 544 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 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) [2021-10-06 21:21:04,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:04,816 INFO L93 Difference]: Finished difference Result 276 states and 762 transitions. [2021-10-06 21:21:04,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-06 21:21:04,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-06 21:21:04,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:04,820 INFO L225 Difference]: With dead ends: 276 [2021-10-06 21:21:04,820 INFO L226 Difference]: Without dead ends: 234 [2021-10-06 21:21:04,821 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-06 21:21:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-10-06 21:21:04,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 182. [2021-10-06 21:21:04,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9171270718232045) internal successors, (528), 181 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:04,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 528 transitions. [2021-10-06 21:21:04,835 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 528 transitions. Word has length 18 [2021-10-06 21:21:04,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:04,835 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 528 transitions. [2021-10-06 21:21:04,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 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) [2021-10-06 21:21:04,835 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 528 transitions. [2021-10-06 21:21:04,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-06 21:21:04,837 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:04,837 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:04,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:05,049 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 [2021-10-06 21:21:05,050 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:05,051 INFO L82 PathProgramCache]: Analyzing trace with hash 379562819, now seen corresponding path program 1 times [2021-10-06 21:21:05,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:05,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521093813] [2021-10-06 21:21:05,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:21:05,053 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:05,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:05,054 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) [2021-10-06 21:21:05,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-06 21:21:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:05,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-06 21:21:05,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:05,251 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:05,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:05,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:05,330 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:05,330 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521093813] [2021-10-06 21:21:05,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521093813] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:05,331 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:05,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-06 21:21:05,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126502330] [2021-10-06 21:21:05,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:21:05,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:05,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:21:05,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:21:05,332 INFO L87 Difference]: Start difference. First operand 182 states and 528 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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) [2021-10-06 21:21:05,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:05,610 INFO L93 Difference]: Finished difference Result 684 states and 2035 transitions. [2021-10-06 21:21:05,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:21:05,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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 20 [2021-10-06 21:21:05,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:05,617 INFO L225 Difference]: With dead ends: 684 [2021-10-06 21:21:05,617 INFO L226 Difference]: Without dead ends: 592 [2021-10-06 21:21:05,618 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2021-10-06 21:21:05,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-10-06 21:21:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 416. [2021-10-06 21:21:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 3.2144578313253014) internal successors, (1334), 415 states have internal predecessors, (1334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:05,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1334 transitions. [2021-10-06 21:21:05,639 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1334 transitions. Word has length 20 [2021-10-06 21:21:05,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:05,639 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 1334 transitions. [2021-10-06 21:21:05,639 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 7 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) [2021-10-06 21:21:05,640 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1334 transitions. [2021-10-06 21:21:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:21:05,642 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:05,642 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:05,658 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:05,854 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 [2021-10-06 21:21:05,855 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:05,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:05,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1469633132, now seen corresponding path program 2 times [2021-10-06 21:21:05,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:05,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [12576626] [2021-10-06 21:21:05,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:21:05,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:05,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:05,859 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) [2021-10-06 21:21:05,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-06 21:21:05,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:21:05,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:06,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:21:06,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:06,094 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:21:06,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:06,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:21:06,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:06,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [12576626] [2021-10-06 21:21:06,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [12576626] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:06,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:06,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 21:21:06,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217204774] [2021-10-06 21:21:06,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:21:06,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:06,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:21:06,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:21:06,178 INFO L87 Difference]: Start difference. First operand 416 states and 1334 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:06,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:06,228 INFO L93 Difference]: Finished difference Result 912 states and 2894 transitions. [2021-10-06 21:21:06,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:21:06,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 22 [2021-10-06 21:21:06,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:06,237 INFO L225 Difference]: With dead ends: 912 [2021-10-06 21:21:06,237 INFO L226 Difference]: Without dead ends: 830 [2021-10-06 21:21:06,238 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.2ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:21:06,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-10-06 21:21:06,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 612. [2021-10-06 21:21:06,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 3.3502454991816695) internal successors, (2047), 611 states have internal predecessors, (2047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:06,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 2047 transitions. [2021-10-06 21:21:06,268 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 2047 transitions. Word has length 22 [2021-10-06 21:21:06,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:06,269 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 2047 transitions. [2021-10-06 21:21:06,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:06,269 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 2047 transitions. [2021-10-06 21:21:06,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:21:06,272 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:06,272 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:06,287 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:06,485 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 [2021-10-06 21:21:06,485 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:06,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:06,486 INFO L82 PathProgramCache]: Analyzing trace with hash 401374916, now seen corresponding path program 1 times [2021-10-06 21:21:06,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:06,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223797810] [2021-10-06 21:21:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:21:06,487 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:06,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:06,488 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) [2021-10-06 21:21:06,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-06 21:21:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:06,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:21:06,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:06,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:06,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:06,821 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:06,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:06,821 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223797810] [2021-10-06 21:21:06,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223797810] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:06,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:06,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 21:21:06,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304424242] [2021-10-06 21:21:06,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:21:06,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:06,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:21:06,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:21:06,823 INFO L87 Difference]: Start difference. First operand 612 states and 2047 transitions. Second operand has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:07,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:07,895 INFO L93 Difference]: Finished difference Result 2794 states and 9073 transitions. [2021-10-06 21:21:07,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-10-06 21:21:07,896 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-06 21:21:07,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:07,921 INFO L225 Difference]: With dead ends: 2794 [2021-10-06 21:21:07,921 INFO L226 Difference]: Without dead ends: 2606 [2021-10-06 21:21:07,922 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 468.0ms TimeCoverageRelationStatistics Valid=279, Invalid=651, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:21:07,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2606 states. [2021-10-06 21:21:08,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2606 to 1554. [2021-10-06 21:21:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1554 states, 1553 states have (on average 3.451384417256922) internal successors, (5360), 1553 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:08,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 5360 transitions. [2021-10-06 21:21:08,036 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 5360 transitions. Word has length 22 [2021-10-06 21:21:08,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:08,037 INFO L470 AbstractCegarLoop]: Abstraction has 1554 states and 5360 transitions. [2021-10-06 21:21:08,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.0) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:08,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 5360 transitions. [2021-10-06 21:21:08,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-06 21:21:08,044 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:08,044 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:08,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:08,257 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 [2021-10-06 21:21:08,257 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:08,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:08,258 INFO L82 PathProgramCache]: Analyzing trace with hash -2036746143, now seen corresponding path program 1 times [2021-10-06 21:21:08,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:08,259 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440220180] [2021-10-06 21:21:08,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:21:08,260 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:08,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:08,261 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) [2021-10-06 21:21:08,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-06 21:21:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:08,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-06 21:21:08,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:21:08,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:21:08,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:08,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440220180] [2021-10-06 21:21:08,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440220180] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:08,530 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:08,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-10-06 21:21:08,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215437278] [2021-10-06 21:21:08,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-06 21:21:08,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:08,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-06 21:21:08,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:21:08,532 INFO L87 Difference]: Start difference. First operand 1554 states and 5360 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:08,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:08,583 INFO L93 Difference]: Finished difference Result 2790 states and 9506 transitions. [2021-10-06 21:21:08,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-06 21:21:08,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 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 22 [2021-10-06 21:21:08,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:08,608 INFO L225 Difference]: With dead ends: 2790 [2021-10-06 21:21:08,608 INFO L226 Difference]: Without dead ends: 2604 [2021-10-06 21:21:08,608 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 19.7ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-10-06 21:21:08,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-10-06 21:21:08,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2128. [2021-10-06 21:21:08,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 3.4997649271274094) internal successors, (7444), 2127 states have internal predecessors, (7444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:08,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 7444 transitions. [2021-10-06 21:21:08,707 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 7444 transitions. Word has length 22 [2021-10-06 21:21:08,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:08,707 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 7444 transitions. [2021-10-06 21:21:08,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:08,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 7444 transitions. [2021-10-06 21:21:08,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:21:08,717 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:08,717 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:08,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:08,929 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 [2021-10-06 21:21:08,929 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:08,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:08,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1470641540, now seen corresponding path program 1 times [2021-10-06 21:21:08,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:08,931 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [218685362] [2021-10-06 21:21:08,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:21:08,932 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:08,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:08,933 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) [2021-10-06 21:21:08,941 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-06 21:21:09,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:09,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:21:09,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:09,192 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:09,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:09,396 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:09,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [218685362] [2021-10-06 21:21:09,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [218685362] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:09,396 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:09,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2021-10-06 21:21:09,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040130028] [2021-10-06 21:21:09,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-06 21:21:09,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:09,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-06 21:21:09,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2021-10-06 21:21:09,400 INFO L87 Difference]: Start difference. First operand 2128 states and 7444 transitions. Second operand has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:11,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:11,128 INFO L93 Difference]: Finished difference Result 9444 states and 32921 transitions. [2021-10-06 21:21:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-10-06 21:21:11,130 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 26 [2021-10-06 21:21:11,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:11,226 INFO L225 Difference]: With dead ends: 9444 [2021-10-06 21:21:11,226 INFO L226 Difference]: Without dead ends: 9164 [2021-10-06 21:21:11,227 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 898.6ms TimeCoverageRelationStatistics Valid=452, Invalid=1188, Unknown=0, NotChecked=0, Total=1640 [2021-10-06 21:21:11,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9164 states. [2021-10-06 21:21:11,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9164 to 2834. [2021-10-06 21:21:11,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2834 states, 2833 states have (on average 3.4994705259442287) internal successors, (9914), 2833 states have internal predecessors, (9914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:11,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2834 states to 2834 states and 9914 transitions. [2021-10-06 21:21:11,500 INFO L78 Accepts]: Start accepts. Automaton has 2834 states and 9914 transitions. Word has length 26 [2021-10-06 21:21:11,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:11,500 INFO L470 AbstractCegarLoop]: Abstraction has 2834 states and 9914 transitions. [2021-10-06 21:21:11,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2142857142857144) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:11,500 INFO L276 IsEmpty]: Start isEmpty. Operand 2834 states and 9914 transitions. [2021-10-06 21:21:11,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:21:11,515 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:11,515 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:11,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:11,729 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 [2021-10-06 21:21:11,729 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:11,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:11,730 INFO L82 PathProgramCache]: Analyzing trace with hash -2052470221, now seen corresponding path program 3 times [2021-10-06 21:21:11,730 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:11,731 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [227628890] [2021-10-06 21:21:11,731 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:21:11,731 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:11,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:11,732 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) [2021-10-06 21:21:11,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-06 21:21:11,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-06 21:21:11,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:11,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-06 21:21:11,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:12,058 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:21:12,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:12,305 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:21:12,306 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:12,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [227628890] [2021-10-06 21:21:12,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [227628890] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:12,306 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:12,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5] total 8 [2021-10-06 21:21:12,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874011552] [2021-10-06 21:21:12,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-06 21:21:12,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:12,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-06 21:21:12,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:21:12,308 INFO L87 Difference]: Start difference. First operand 2834 states and 9914 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:12,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:12,450 INFO L93 Difference]: Finished difference Result 5246 states and 18180 transitions. [2021-10-06 21:21:12,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:21:12,451 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-06 21:21:12,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:12,481 INFO L225 Difference]: With dead ends: 5246 [2021-10-06 21:21:12,481 INFO L226 Difference]: Without dead ends: 4992 [2021-10-06 21:21:12,481 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 73.8ms TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-06 21:21:12,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4992 states. [2021-10-06 21:21:12,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4992 to 3594. [2021-10-06 21:21:12,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3594 states, 3593 states have (on average 3.526857779014751) internal successors, (12672), 3593 states have internal predecessors, (12672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:12,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3594 states to 3594 states and 12672 transitions. [2021-10-06 21:21:12,651 INFO L78 Accepts]: Start accepts. Automaton has 3594 states and 12672 transitions. Word has length 26 [2021-10-06 21:21:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:12,651 INFO L470 AbstractCegarLoop]: Abstraction has 3594 states and 12672 transitions. [2021-10-06 21:21:12,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:12,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3594 states and 12672 transitions. [2021-10-06 21:21:12,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-06 21:21:12,664 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:12,665 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:12,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:12,877 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 [2021-10-06 21:21:12,878 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:12,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:12,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1033629792, now seen corresponding path program 2 times [2021-10-06 21:21:12,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:12,880 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [225973507] [2021-10-06 21:21:12,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:21:12,881 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:12,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:12,882 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) [2021-10-06 21:21:12,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-06 21:21:13,097 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:21:13,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:13,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-06 21:21:13,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:13,192 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:21:13,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:21:13,317 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:13,317 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [225973507] [2021-10-06 21:21:13,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [225973507] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:13,318 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:13,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2021-10-06 21:21:13,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570067704] [2021-10-06 21:21:13,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-06 21:21:13,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:13,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-06 21:21:13,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:21:13,320 INFO L87 Difference]: Start difference. First operand 3594 states and 12672 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:13,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:13,412 INFO L93 Difference]: Finished difference Result 6132 states and 21337 transitions. [2021-10-06 21:21:13,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-06 21:21:13,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 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 26 [2021-10-06 21:21:13,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:13,483 INFO L225 Difference]: With dead ends: 6132 [2021-10-06 21:21:13,483 INFO L226 Difference]: Without dead ends: 5866 [2021-10-06 21:21:13,483 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.4ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-10-06 21:21:13,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5866 states. [2021-10-06 21:21:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5866 to 4396. [2021-10-06 21:21:13,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4396 states, 4395 states have (on average 3.5419795221843002) internal successors, (15567), 4395 states have internal predecessors, (15567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:13,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4396 states to 4396 states and 15567 transitions. [2021-10-06 21:21:13,667 INFO L78 Accepts]: Start accepts. Automaton has 4396 states and 15567 transitions. Word has length 26 [2021-10-06 21:21:13,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:13,668 INFO L470 AbstractCegarLoop]: Abstraction has 4396 states and 15567 transitions. [2021-10-06 21:21:13,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:13,668 INFO L276 IsEmpty]: Start isEmpty. Operand 4396 states and 15567 transitions. [2021-10-06 21:21:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:21:13,684 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:13,685 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:13,699 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2021-10-06 21:21:13,898 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 [2021-10-06 21:21:13,899 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:13,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:13,900 INFO L82 PathProgramCache]: Analyzing trace with hash -698811939, now seen corresponding path program 1 times [2021-10-06 21:21:13,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:13,901 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866909283] [2021-10-06 21:21:13,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-06 21:21:13,902 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:13,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:13,903 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:13,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-06 21:21:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:21:14,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:21:14,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:14,211 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:14,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:14,440 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:14,440 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:14,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866909283] [2021-10-06 21:21:14,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866909283] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:14,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:14,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:21:14,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075956880] [2021-10-06 21:21:14,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:21:14,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:14,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:21:14,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:21:14,442 INFO L87 Difference]: Start difference. First operand 4396 states and 15567 transitions. Second operand has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:16,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:16,864 INFO L93 Difference]: Finished difference Result 20462 states and 72886 transitions. [2021-10-06 21:21:16,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-10-06 21:21:16,864 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 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 30 [2021-10-06 21:21:16,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:16,970 INFO L225 Difference]: With dead ends: 20462 [2021-10-06 21:21:16,970 INFO L226 Difference]: Without dead ends: 20082 [2021-10-06 21:21:16,971 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 662 ImplicationChecksByTransitivity, 1340.2ms TimeCoverageRelationStatistics Valid=660, Invalid=1890, Unknown=0, NotChecked=0, Total=2550 [2021-10-06 21:21:17,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20082 states. [2021-10-06 21:21:17,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20082 to 5816. [2021-10-06 21:21:17,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5816 states, 5815 states have (on average 3.5325881341358554) internal successors, (20542), 5815 states have internal predecessors, (20542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:17,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5816 states to 5816 states and 20542 transitions. [2021-10-06 21:21:17,595 INFO L78 Accepts]: Start accepts. Automaton has 5816 states and 20542 transitions. Word has length 30 [2021-10-06 21:21:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:17,596 INFO L470 AbstractCegarLoop]: Abstraction has 5816 states and 20542 transitions. [2021-10-06 21:21:17,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.3125) internal successors, (53), 15 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:17,597 INFO L276 IsEmpty]: Start isEmpty. Operand 5816 states and 20542 transitions. [2021-10-06 21:21:17,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:21:17,619 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:17,619 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:17,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:17,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:17,836 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:17,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:17,837 INFO L82 PathProgramCache]: Analyzing trace with hash 136924474, now seen corresponding path program 4 times [2021-10-06 21:21:17,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:17,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1393761868] [2021-10-06 21:21:17,838 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:21:17,838 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:17,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:17,839 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:17,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-10-06 21:21:18,015 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:21:18,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:18,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-06 21:21:18,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:21:18,123 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:18,292 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:21:18,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:18,292 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1393761868] [2021-10-06 21:21:18,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1393761868] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:18,292 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:18,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2021-10-06 21:21:18,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583143520] [2021-10-06 21:21:18,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-06 21:21:18,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:18,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-06 21:21:18,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:21:18,295 INFO L87 Difference]: Start difference. First operand 5816 states and 20542 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:18,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:18,574 INFO L93 Difference]: Finished difference Result 10152 states and 35540 transitions. [2021-10-06 21:21:18,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:21:18,575 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 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 30 [2021-10-06 21:21:18,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:18,652 INFO L225 Difference]: With dead ends: 10152 [2021-10-06 21:21:18,653 INFO L226 Difference]: Without dead ends: 9806 [2021-10-06 21:21:18,653 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 81.3ms TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-10-06 21:21:18,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9806 states. [2021-10-06 21:21:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9806 to 6856. [2021-10-06 21:21:19,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6856 states, 6855 states have (on average 3.5442742523705326) internal successors, (24296), 6855 states have internal predecessors, (24296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:19,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6856 states to 6856 states and 24296 transitions. [2021-10-06 21:21:19,209 INFO L78 Accepts]: Start accepts. Automaton has 6856 states and 24296 transitions. Word has length 30 [2021-10-06 21:21:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:19,209 INFO L470 AbstractCegarLoop]: Abstraction has 6856 states and 24296 transitions. [2021-10-06 21:21:19,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 9 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:19,210 INFO L276 IsEmpty]: Start isEmpty. Operand 6856 states and 24296 transitions. [2021-10-06 21:21:19,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-06 21:21:19,238 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:19,238 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:19,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:19,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:19,455 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:19,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:19,456 INFO L82 PathProgramCache]: Analyzing trace with hash -474122721, now seen corresponding path program 3 times [2021-10-06 21:21:19,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:19,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1028762836] [2021-10-06 21:21:19,457 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:21:19,457 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:19,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:19,459 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:19,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2021-10-06 21:21:19,697 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-10-06 21:21:19,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:19,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-06 21:21:19,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:19,840 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-06 21:21:19,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 24 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:21:20,165 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:20,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1028762836] [2021-10-06 21:21:20,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1028762836] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:20,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:20,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 10 [2021-10-06 21:21:20,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702146131] [2021-10-06 21:21:20,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-06 21:21:20,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:20,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-06 21:21:20,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:21:20,167 INFO L87 Difference]: Start difference. First operand 6856 states and 24296 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:20,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:20,409 INFO L93 Difference]: Finished difference Result 13208 states and 46680 transitions. [2021-10-06 21:21:20,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-06 21:21:20,410 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 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 30 [2021-10-06 21:21:20,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:20,450 INFO L225 Difference]: With dead ends: 13208 [2021-10-06 21:21:20,450 INFO L226 Difference]: Without dead ends: 12762 [2021-10-06 21:21:20,450 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 121.7ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-10-06 21:21:20,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12762 states. [2021-10-06 21:21:20,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12762 to 9486. [2021-10-06 21:21:20,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9486 states, 9485 states have (on average 3.585239852398524) internal successors, (34006), 9485 states have internal predecessors, (34006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9486 states to 9486 states and 34006 transitions. [2021-10-06 21:21:21,074 INFO L78 Accepts]: Start accepts. Automaton has 9486 states and 34006 transitions. Word has length 30 [2021-10-06 21:21:21,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:21,076 INFO L470 AbstractCegarLoop]: Abstraction has 9486 states and 34006 transitions. [2021-10-06 21:21:21,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:21,076 INFO L276 IsEmpty]: Start isEmpty. Operand 9486 states and 34006 transitions. [2021-10-06 21:21:21,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-06 21:21:21,107 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:21,107 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:21,117 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2021-10-06 21:21:21,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:21,311 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:21,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:21,312 INFO L82 PathProgramCache]: Analyzing trace with hash 557069182, now seen corresponding path program 2 times [2021-10-06 21:21:21,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:21,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1648443787] [2021-10-06 21:21:21,313 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:21:21,314 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:21,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:21,315 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:21,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2021-10-06 21:21:21,560 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:21:21,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:21,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:21:21,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:21:21,736 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:22,002 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 2 proven. 39 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:21:22,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:22,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1648443787] [2021-10-06 21:21:22,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1648443787] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:22,003 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:22,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:21:22,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253214555] [2021-10-06 21:21:22,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:21:22,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:22,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:21:22,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:21:22,005 INFO L87 Difference]: Start difference. First operand 9486 states and 34006 transitions. Second operand has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:25,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:25,911 INFO L93 Difference]: Finished difference Result 40010 states and 144489 transitions. [2021-10-06 21:21:25,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-10-06 21:21:25,912 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 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 34 [2021-10-06 21:21:25,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:26,091 INFO L225 Difference]: With dead ends: 40010 [2021-10-06 21:21:26,092 INFO L226 Difference]: Without dead ends: 39528 [2021-10-06 21:21:26,093 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1127 ImplicationChecksByTransitivity, 2220.5ms TimeCoverageRelationStatistics Valid=971, Invalid=3061, Unknown=0, NotChecked=0, Total=4032 [2021-10-06 21:21:26,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39528 states. [2021-10-06 21:21:27,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39528 to 10128. [2021-10-06 21:21:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10128 states, 10127 states have (on average 3.5543596326651525) internal successors, (35995), 10127 states have internal predecessors, (35995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:27,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10128 states to 10128 states and 35995 transitions. [2021-10-06 21:21:27,317 INFO L78 Accepts]: Start accepts. Automaton has 10128 states and 35995 transitions. Word has length 34 [2021-10-06 21:21:27,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:27,320 INFO L470 AbstractCegarLoop]: Abstraction has 10128 states and 35995 transitions. [2021-10-06 21:21:27,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.388888888888889) internal successors, (61), 17 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:27,321 INFO L276 IsEmpty]: Start isEmpty. Operand 10128 states and 35995 transitions. [2021-10-06 21:21:27,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-06 21:21:27,352 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:27,352 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:27,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:27,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:27,566 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:27,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:27,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1509356671, now seen corresponding path program 5 times [2021-10-06 21:21:27,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:27,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415171068] [2021-10-06 21:21:27,568 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:21:27,568 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:27,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:27,570 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:27,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2021-10-06 21:21:27,781 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-06 21:21:27,781 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:27,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-06 21:21:27,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-06 21:21:27,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:28,643 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 39 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:28,643 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:28,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415171068] [2021-10-06 21:21:28,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415171068] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:28,644 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:28,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 15 [2021-10-06 21:21:28,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10140867] [2021-10-06 21:21:28,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:21:28,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:28,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:21:28,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:21:28,645 INFO L87 Difference]: Start difference. First operand 10128 states and 35995 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:28,886 INFO L93 Difference]: Finished difference Result 19744 states and 70034 transitions. [2021-10-06 21:21:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:21:28,887 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 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 34 [2021-10-06 21:21:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:29,023 INFO L225 Difference]: With dead ends: 19744 [2021-10-06 21:21:29,023 INFO L226 Difference]: Without dead ends: 19206 [2021-10-06 21:21:29,024 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 311.9ms TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:21:29,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19206 states. [2021-10-06 21:21:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19206 to 13760. [2021-10-06 21:21:29,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13760 states, 13759 states have (on average 3.5869612617196016) internal successors, (49353), 13759 states have internal predecessors, (49353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:29,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13760 states to 13760 states and 49353 transitions. [2021-10-06 21:21:29,765 INFO L78 Accepts]: Start accepts. Automaton has 13760 states and 49353 transitions. Word has length 34 [2021-10-06 21:21:29,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:29,766 INFO L470 AbstractCegarLoop]: Abstraction has 13760 states and 49353 transitions. [2021-10-06 21:21:29,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 15 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:29,766 INFO L276 IsEmpty]: Start isEmpty. Operand 13760 states and 49353 transitions. [2021-10-06 21:21:29,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-10-06 21:21:29,966 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:29,966 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:29,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:30,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:30,179 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:30,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:30,180 INFO L82 PathProgramCache]: Analyzing trace with hash 2086476190, now seen corresponding path program 4 times [2021-10-06 21:21:30,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:30,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1354565708] [2021-10-06 21:21:30,181 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:21:30,181 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:30,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:30,182 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:30,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2021-10-06 21:21:30,404 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:21:30,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:30,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-06 21:21:30,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:30,532 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-06 21:21:30,533 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 9 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-10-06 21:21:30,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:30,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1354565708] [2021-10-06 21:21:30,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1354565708] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:30,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:30,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2021-10-06 21:21:30,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962567368] [2021-10-06 21:21:30,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-06 21:21:30,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:30,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-06 21:21:30,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:21:30,745 INFO L87 Difference]: Start difference. First operand 13760 states and 49353 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:31,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:31,119 INFO L93 Difference]: Finished difference Result 26758 states and 95662 transitions. [2021-10-06 21:21:31,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-06 21:21:31,120 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 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 34 [2021-10-06 21:21:31,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:31,231 INFO L225 Difference]: With dead ends: 26758 [2021-10-06 21:21:31,231 INFO L226 Difference]: Without dead ends: 26108 [2021-10-06 21:21:31,231 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 108.3ms TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2021-10-06 21:21:31,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26108 states. [2021-10-06 21:21:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26108 to 17978. [2021-10-06 21:21:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17978 states, 17977 states have (on average 3.6036046058852977) internal successors, (64782), 17977 states have internal predecessors, (64782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17978 states to 17978 states and 64782 transitions. [2021-10-06 21:21:31,964 INFO L78 Accepts]: Start accepts. Automaton has 17978 states and 64782 transitions. Word has length 34 [2021-10-06 21:21:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:31,964 INFO L470 AbstractCegarLoop]: Abstraction has 17978 states and 64782 transitions. [2021-10-06 21:21:31,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 11 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 17978 states and 64782 transitions. [2021-10-06 21:21:32,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:21:32,031 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:32,031 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:32,046 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:32,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:32,246 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:32,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:32,247 INFO L82 PathProgramCache]: Analyzing trace with hash 2050795359, now seen corresponding path program 3 times [2021-10-06 21:21:32,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:32,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1250019703] [2021-10-06 21:21:32,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:21:32,248 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:32,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:32,250 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:32,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2021-10-06 21:21:32,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2021-10-06 21:21:32,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:32,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-06 21:21:32,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:32,774 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:21:32,774 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 62 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:21:33,151 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:33,151 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1250019703] [2021-10-06 21:21:33,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1250019703] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:33,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:33,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:21:33,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149580098] [2021-10-06 21:21:33,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:21:33,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:33,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:21:33,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:21:33,154 INFO L87 Difference]: Start difference. First operand 17978 states and 64782 transitions. Second operand has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:38,700 INFO L93 Difference]: Finished difference Result 76964 states and 281953 transitions. [2021-10-06 21:21:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2021-10-06 21:21:38,701 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-10-06 21:21:38,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:39,327 INFO L225 Difference]: With dead ends: 76964 [2021-10-06 21:21:39,327 INFO L226 Difference]: Without dead ends: 76380 [2021-10-06 21:21:39,329 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1909 ImplicationChecksByTransitivity, 3414.9ms TimeCoverageRelationStatistics Valid=1425, Invalid=4895, Unknown=0, NotChecked=0, Total=6320 [2021-10-06 21:21:39,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76380 states. [2021-10-06 21:21:41,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76380 to 19286. [2021-10-06 21:21:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19286 states, 19285 states have (on average 3.595229452942702) internal successors, (69334), 19285 states have internal predecessors, (69334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:41,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19286 states to 19286 states and 69334 transitions. [2021-10-06 21:21:41,584 INFO L78 Accepts]: Start accepts. Automaton has 19286 states and 69334 transitions. Word has length 38 [2021-10-06 21:21:41,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:41,584 INFO L470 AbstractCegarLoop]: Abstraction has 19286 states and 69334 transitions. [2021-10-06 21:21:41,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.45) internal successors, (69), 19 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:41,585 INFO L276 IsEmpty]: Start isEmpty. Operand 19286 states and 69334 transitions. [2021-10-06 21:21:41,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:21:41,675 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:41,675 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:41,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:41,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:41,887 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:41,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:41,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1328630520, now seen corresponding path program 6 times [2021-10-06 21:21:41,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:41,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1353875872] [2021-10-06 21:21:41,889 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:21:41,889 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:41,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:41,892 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:41,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2021-10-06 21:21:42,194 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-06 21:21:42,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:42,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-06 21:21:42,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:42,369 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-06 21:21:42,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 56 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:43,086 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:43,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1353875872] [2021-10-06 21:21:43,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1353875872] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:43,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:43,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 18 [2021-10-06 21:21:43,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190878769] [2021-10-06 21:21:43,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:21:43,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:43,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:21:43,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:21:43,088 INFO L87 Difference]: Start difference. First operand 19286 states and 69334 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:43,735 INFO L93 Difference]: Finished difference Result 37710 states and 135218 transitions. [2021-10-06 21:21:43,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:21:43,736 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 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 38 [2021-10-06 21:21:43,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:43,888 INFO L225 Difference]: With dead ends: 37710 [2021-10-06 21:21:43,889 INFO L226 Difference]: Without dead ends: 36956 [2021-10-06 21:21:43,889 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 437.1ms TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:21:43,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36956 states. [2021-10-06 21:21:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36956 to 24822. [2021-10-06 21:21:44,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24822 states, 24821 states have (on average 3.6085572700535837) internal successors, (89568), 24821 states have internal predecessors, (89568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:45,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24822 states to 24822 states and 89568 transitions. [2021-10-06 21:21:45,076 INFO L78 Accepts]: Start accepts. Automaton has 24822 states and 89568 transitions. Word has length 38 [2021-10-06 21:21:45,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:45,076 INFO L470 AbstractCegarLoop]: Abstraction has 24822 states and 89568 transitions. [2021-10-06 21:21:45,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:45,077 INFO L276 IsEmpty]: Start isEmpty. Operand 24822 states and 89568 transitions. [2021-10-06 21:21:45,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-06 21:21:45,126 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:45,126 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:45,138 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:45,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:45,327 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:45,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:45,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1094341923, now seen corresponding path program 5 times [2021-10-06 21:21:45,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:45,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604242643] [2021-10-06 21:21:45,329 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:21:45,329 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:45,330 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:45,330 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:45,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2021-10-06 21:21:45,599 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2021-10-06 21:21:45,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:45,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-06 21:21:45,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:45,766 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-10-06 21:21:45,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 56 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:46,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:46,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604242643] [2021-10-06 21:21:46,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604242643] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:46,414 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:46,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12] total 18 [2021-10-06 21:21:46,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492671838] [2021-10-06 21:21:46,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-06 21:21:46,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:46,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-06 21:21:46,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:21:46,416 INFO L87 Difference]: Start difference. First operand 24822 states and 89568 transitions. Second operand has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:21:47,084 INFO L93 Difference]: Finished difference Result 48950 states and 176171 transitions. [2021-10-06 21:21:47,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-06 21:21:47,084 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 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 38 [2021-10-06 21:21:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:21:47,295 INFO L225 Difference]: With dead ends: 48950 [2021-10-06 21:21:47,296 INFO L226 Difference]: Without dead ends: 48032 [2021-10-06 21:21:47,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 388.1ms TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-10-06 21:21:47,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48032 states. [2021-10-06 21:21:48,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48032 to 31548. [2021-10-06 21:21:48,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31548 states, 31547 states have (on average 3.619107997590896) internal successors, (114172), 31547 states have internal predecessors, (114172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:48,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31548 states to 31548 states and 114172 transitions. [2021-10-06 21:21:48,616 INFO L78 Accepts]: Start accepts. Automaton has 31548 states and 114172 transitions. Word has length 38 [2021-10-06 21:21:48,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:21:48,617 INFO L470 AbstractCegarLoop]: Abstraction has 31548 states and 114172 transitions. [2021-10-06 21:21:48,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.526315789473684) internal successors, (67), 18 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:21:48,617 INFO L276 IsEmpty]: Start isEmpty. Operand 31548 states and 114172 transitions. [2021-10-06 21:21:48,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-06 21:21:48,693 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:21:48,694 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:21:48,707 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2021-10-06 21:21:48,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:21:48,908 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:21:48,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:21:48,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1377786386, now seen corresponding path program 2 times [2021-10-06 21:21:48,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:21:48,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091930802] [2021-10-06 21:21:48,910 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:21:48,911 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:21:48,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:21:48,912 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:21:48,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2021-10-06 21:21:49,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:21:49,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:21:49,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-06 21:21:49,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:21:49,517 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:49,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:21:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 12 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:21:50,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:21:50,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091930802] [2021-10-06 21:21:50,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091930802] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:21:50,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:21:50,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29 [2021-10-06 21:21:50,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376101265] [2021-10-06 21:21:50,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-10-06 21:21:50,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:21:50,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-10-06 21:21:50,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=643, Unknown=0, NotChecked=0, Total=870 [2021-10-06 21:21:50,136 INFO L87 Difference]: Start difference. First operand 31548 states and 114172 transitions. Second operand has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:19,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:19,013 INFO L93 Difference]: Finished difference Result 189576 states and 698600 transitions. [2021-10-06 21:22:19,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2021-10-06 21:22:19,013 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2021-10-06 21:22:19,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:20,509 INFO L225 Difference]: With dead ends: 189576 [2021-10-06 21:22:20,509 INFO L226 Difference]: Without dead ends: 188956 [2021-10-06 21:22:20,537 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17374 ImplicationChecksByTransitivity, 20942.2ms TimeCoverageRelationStatistics Valid=9351, Invalid=34959, Unknown=0, NotChecked=0, Total=44310 [2021-10-06 21:22:20,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188956 states. [2021-10-06 21:22:25,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188956 to 114682. [2021-10-06 21:22:25,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114682 states, 114681 states have (on average 3.669605252831768) internal successors, (420834), 114681 states have internal predecessors, (420834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:27,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114682 states to 114682 states and 420834 transitions. [2021-10-06 21:22:27,159 INFO L78 Accepts]: Start accepts. Automaton has 114682 states and 420834 transitions. Word has length 40 [2021-10-06 21:22:27,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:27,159 INFO L470 AbstractCegarLoop]: Abstraction has 114682 states and 420834 transitions. [2021-10-06 21:22:27,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.4) internal successors, (72), 29 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:27,160 INFO L276 IsEmpty]: Start isEmpty. Operand 114682 states and 420834 transitions. [2021-10-06 21:22:27,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-06 21:22:27,297 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:27,297 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:27,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:27,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:27,511 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:22:27,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:27,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1886127665, now seen corresponding path program 7 times [2021-10-06 21:22:27,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:27,512 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1332149527] [2021-10-06 21:22:27,512 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:22:27,512 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:27,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:27,514 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:27,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2021-10-06 21:22:27,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:22:27,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-06 21:22:27,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:27,991 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 108 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:22:27,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:28,307 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 108 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:22:28,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:28,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1332149527] [2021-10-06 21:22:28,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1332149527] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:28,308 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:28,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2021-10-06 21:22:28,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059033659] [2021-10-06 21:22:28,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-06 21:22:28,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:28,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-06 21:22:28,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:22:28,311 INFO L87 Difference]: Start difference. First operand 114682 states and 420834 transitions. Second operand has 16 states, 16 states have (on average 4.6875) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:30,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:30,608 INFO L93 Difference]: Finished difference Result 184938 states and 677013 transitions. [2021-10-06 21:22:30,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:22:30,609 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 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 42 [2021-10-06 21:22:30,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:32,392 INFO L225 Difference]: With dead ends: 184938 [2021-10-06 21:22:32,393 INFO L226 Difference]: Without dead ends: 181764 [2021-10-06 21:22:32,393 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 205.0ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-10-06 21:22:32,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181764 states. [2021-10-06 21:22:37,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181764 to 124850. [2021-10-06 21:22:38,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124850 states, 124849 states have (on average 3.6716833935393955) internal successors, (458406), 124849 states have internal predecessors, (458406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124850 states to 124850 states and 458406 transitions. [2021-10-06 21:22:39,334 INFO L78 Accepts]: Start accepts. Automaton has 124850 states and 458406 transitions. Word has length 42 [2021-10-06 21:22:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:39,334 INFO L470 AbstractCegarLoop]: Abstraction has 124850 states and 458406 transitions. [2021-10-06 21:22:39,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 4.6875) internal successors, (75), 15 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 124850 states and 458406 transitions. [2021-10-06 21:22:39,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-10-06 21:22:39,468 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:39,468 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:39,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:39,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:39,682 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:22:39,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:39,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1691485732, now seen corresponding path program 6 times [2021-10-06 21:22:39,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:39,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585166649] [2021-10-06 21:22:39,684 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:22:39,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:39,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:39,685 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:39,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2021-10-06 21:22:40,079 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2021-10-06 21:22:40,079 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:40,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 33 conjunts are in the unsatisfiable core [2021-10-06 21:22:40,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:40,283 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 13 proven. 108 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-06 21:22:40,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 72 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:41,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:41,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585166649] [2021-10-06 21:22:41,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585166649] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:41,108 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:41,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 14] total 21 [2021-10-06 21:22:41,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636865007] [2021-10-06 21:22:41,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:22:41,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:41,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:22:41,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:22:41,109 INFO L87 Difference]: Start difference. First operand 124850 states and 458406 transitions. Second operand has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:43,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:22:43,606 INFO L93 Difference]: Finished difference Result 196084 states and 717869 transitions. [2021-10-06 21:22:43,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-06 21:22:43,607 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 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 42 [2021-10-06 21:22:43,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:22:45,506 INFO L225 Difference]: With dead ends: 196084 [2021-10-06 21:22:45,507 INFO L226 Difference]: Without dead ends: 192882 [2021-10-06 21:22:45,507 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 539.1ms TimeCoverageRelationStatistics Valid=130, Invalid=332, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:22:45,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192882 states. [2021-10-06 21:22:51,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192882 to 135168. [2021-10-06 21:22:51,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135168 states, 135167 states have (on average 3.6731154793699647) internal successors, (496484), 135167 states have internal predecessors, (496484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:53,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135168 states to 135168 states and 496484 transitions. [2021-10-06 21:22:53,283 INFO L78 Accepts]: Start accepts. Automaton has 135168 states and 496484 transitions. Word has length 42 [2021-10-06 21:22:53,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:22:53,284 INFO L470 AbstractCegarLoop]: Abstraction has 135168 states and 496484 transitions. [2021-10-06 21:22:53,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.409090909090909) internal successors, (75), 21 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:22:53,284 INFO L276 IsEmpty]: Start isEmpty. Operand 135168 states and 496484 transitions. [2021-10-06 21:22:53,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-10-06 21:22:53,442 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:22:53,442 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:22:53,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2021-10-06 21:22:53,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:22:53,656 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:22:53,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:22:53,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1873547175, now seen corresponding path program 2 times [2021-10-06 21:22:53,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:22:53,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1891745471] [2021-10-06 21:22:53,659 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:22:53,659 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:22:53,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:22:53,660 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:22:53,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2021-10-06 21:22:54,007 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:22:54,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:22:54,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-06 21:22:54,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:22:54,288 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:54,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:22:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 2 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:22:54,946 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:22:54,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1891745471] [2021-10-06 21:22:54,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1891745471] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:22:54,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:22:54,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 31 [2021-10-06 21:22:54,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638087085] [2021-10-06 21:22:54,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-10-06 21:22:54,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:22:54,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-10-06 21:22:54,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=735, Unknown=0, NotChecked=0, Total=992 [2021-10-06 21:22:54,948 INFO L87 Difference]: Start difference. First operand 135168 states and 496484 transitions. Second operand has 32 states, 32 states have (on average 2.53125) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:23:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:23:36,718 INFO L93 Difference]: Finished difference Result 571016 states and 2133113 transitions. [2021-10-06 21:23:36,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 224 states. [2021-10-06 21:23:36,718 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 2.53125) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-10-06 21:23:36,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:23:42,946 INFO L225 Difference]: With dead ends: 571016 [2021-10-06 21:23:42,946 INFO L226 Difference]: Without dead ends: 570142 [2021-10-06 21:23:42,969 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22685 ImplicationChecksByTransitivity, 26164.5ms TimeCoverageRelationStatistics Valid=11657, Invalid=45225, Unknown=0, NotChecked=0, Total=56882 [2021-10-06 21:23:44,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570142 states. [2021-10-06 21:24:00,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570142 to 126378. [2021-10-06 21:24:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126378 states, 126377 states have (on average 3.6481242631174977) internal successors, (461039), 126377 states have internal predecessors, (461039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:01,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126378 states to 126378 states and 461039 transitions. [2021-10-06 21:24:01,540 INFO L78 Accepts]: Start accepts. Automaton has 126378 states and 461039 transitions. Word has length 44 [2021-10-06 21:24:01,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:01,540 INFO L470 AbstractCegarLoop]: Abstraction has 126378 states and 461039 transitions. [2021-10-06 21:24:01,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 2.53125) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:01,541 INFO L276 IsEmpty]: Start isEmpty. Operand 126378 states and 461039 transitions. [2021-10-06 21:24:01,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-06 21:24:01,649 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:01,649 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:01,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2021-10-06 21:24:01,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:01,856 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:24:01,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:01,857 INFO L82 PathProgramCache]: Analyzing trace with hash -1979282986, now seen corresponding path program 8 times [2021-10-06 21:24:01,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:01,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [238785317] [2021-10-06 21:24:01,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:24:01,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:01,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:01,858 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:01,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2021-10-06 21:24:02,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:24:02,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:02,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:24:02,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:02,425 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-06 21:24:02,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-06 21:24:02,801 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:02,801 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [238785317] [2021-10-06 21:24:02,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [238785317] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:02,801 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:02,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:24:02,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275115797] [2021-10-06 21:24:02,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:24:02,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:02,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:24:02,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:24:02,803 INFO L87 Difference]: Start difference. First operand 126378 states and 461039 transitions. Second operand has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 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) [2021-10-06 21:24:05,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:05,186 INFO L93 Difference]: Finished difference Result 189438 states and 689840 transitions. [2021-10-06 21:24:05,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:24:05,187 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 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) Word has length 46 [2021-10-06 21:24:05,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:06,959 INFO L225 Difference]: With dead ends: 189438 [2021-10-06 21:24:06,959 INFO L226 Difference]: Without dead ends: 186376 [2021-10-06 21:24:06,959 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 253.1ms TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:24:07,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186376 states. [2021-10-06 21:24:12,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186376 to 123038. [2021-10-06 21:24:12,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123038 states, 123037 states have (on average 3.6553069401887237) internal successors, (449738), 123037 states have internal predecessors, (449738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:13,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123038 states to 123038 states and 449738 transitions. [2021-10-06 21:24:13,072 INFO L78 Accepts]: Start accepts. Automaton has 123038 states and 449738 transitions. Word has length 46 [2021-10-06 21:24:13,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:13,072 INFO L470 AbstractCegarLoop]: Abstraction has 123038 states and 449738 transitions. [2021-10-06 21:24:13,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 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) [2021-10-06 21:24:13,073 INFO L276 IsEmpty]: Start isEmpty. Operand 123038 states and 449738 transitions. [2021-10-06 21:24:13,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-10-06 21:24:13,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:13,810 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:13,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2021-10-06 21:24:14,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:14,023 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:24:14,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:14,023 INFO L82 PathProgramCache]: Analyzing trace with hash 2142819995, now seen corresponding path program 7 times [2021-10-06 21:24:14,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:14,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781825411] [2021-10-06 21:24:14,024 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-06 21:24:14,024 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:14,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:14,025 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:14,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2021-10-06 21:24:14,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-06 21:24:14,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-06 21:24:14,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:14,580 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-06 21:24:14,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:14,945 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 15 proven. 147 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-10-06 21:24:14,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:14,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781825411] [2021-10-06 21:24:14,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781825411] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:14,946 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:14,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-10-06 21:24:14,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266129548] [2021-10-06 21:24:14,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-06 21:24:14,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:14,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-06 21:24:14,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:24:14,947 INFO L87 Difference]: Start difference. First operand 123038 states and 449738 transitions. Second operand has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 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) [2021-10-06 21:24:17,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:24:17,375 INFO L93 Difference]: Finished difference Result 189180 states and 695881 transitions. [2021-10-06 21:24:17,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-06 21:24:17,376 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 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) Word has length 46 [2021-10-06 21:24:17,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:24:18,744 INFO L225 Difference]: With dead ends: 189180 [2021-10-06 21:24:18,744 INFO L226 Difference]: Without dead ends: 186378 [2021-10-06 21:24:18,744 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 254.4ms TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-10-06 21:24:19,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186378 states. [2021-10-06 21:24:24,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186378 to 134208. [2021-10-06 21:24:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134208 states, 134207 states have (on average 3.702608656776472) internal successors, (496916), 134207 states have internal predecessors, (496916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:24:26,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134208 states to 134208 states and 496916 transitions. [2021-10-06 21:24:26,307 INFO L78 Accepts]: Start accepts. Automaton has 134208 states and 496916 transitions. Word has length 46 [2021-10-06 21:24:26,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:24:26,307 INFO L470 AbstractCegarLoop]: Abstraction has 134208 states and 496916 transitions. [2021-10-06 21:24:26,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.611111111111111) internal successors, (83), 17 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) [2021-10-06 21:24:26,308 INFO L276 IsEmpty]: Start isEmpty. Operand 134208 states and 496916 transitions. [2021-10-06 21:24:26,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-06 21:24:26,458 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:24:26,471 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:24:26,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2021-10-06 21:24:26,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:24:26,687 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:24:26,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:24:26,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1570721400, now seen corresponding path program 4 times [2021-10-06 21:24:26,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:24:26,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350313766] [2021-10-06 21:24:26,688 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:24:26,688 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:24:26,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:24:26,690 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:24:26,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2021-10-06 21:24:27,141 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:24:27,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:24:27,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-06 21:24:27,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:24:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 2 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:27,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:24:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 2 proven. 184 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:24:28,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:24:28,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350313766] [2021-10-06 21:24:28,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350313766] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:24:28,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:24:28,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2021-10-06 21:24:28,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413156893] [2021-10-06 21:24:28,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-10-06 21:24:28,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:24:28,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-10-06 21:24:28,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=834, Unknown=0, NotChecked=0, Total=1122 [2021-10-06 21:24:28,258 INFO L87 Difference]: Start difference. First operand 134208 states and 496916 transitions. Second operand has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:17,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:17,121 INFO L93 Difference]: Finished difference Result 657016 states and 2442990 transitions. [2021-10-06 21:25:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 242 states. [2021-10-06 21:25:17,121 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-06 21:25:17,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:24,346 INFO L225 Difference]: With dead ends: 657016 [2021-10-06 21:25:24,346 INFO L226 Difference]: Without dead ends: 655880 [2021-10-06 21:25:24,351 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 256 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26384 ImplicationChecksByTransitivity, 32102.2ms TimeCoverageRelationStatistics Valid=13536, Invalid=52770, Unknown=0, NotChecked=0, Total=66306 [2021-10-06 21:25:26,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655880 states. [2021-10-06 21:25:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655880 to 102872. [2021-10-06 21:25:42,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102872 states, 102871 states have (on average 3.659301455220616) internal successors, (376436), 102871 states have internal predecessors, (376436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:43,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102872 states to 102872 states and 376436 transitions. [2021-10-06 21:25:43,742 INFO L78 Accepts]: Start accepts. Automaton has 102872 states and 376436 transitions. Word has length 48 [2021-10-06 21:25:43,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:43,742 INFO L470 AbstractCegarLoop]: Abstraction has 102872 states and 376436 transitions. [2021-10-06 21:25:43,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 2.6176470588235294) internal successors, (89), 33 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:43,742 INFO L276 IsEmpty]: Start isEmpty. Operand 102872 states and 376436 transitions. [2021-10-06 21:25:43,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-06 21:25:43,838 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:43,838 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:43,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:44,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:44,040 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:25:44,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:44,040 INFO L82 PathProgramCache]: Analyzing trace with hash -748153571, now seen corresponding path program 9 times [2021-10-06 21:25:44,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:44,041 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413745934] [2021-10-06 21:25:44,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:25:44,042 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:44,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:44,042 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:44,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2021-10-06 21:25:44,488 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-06 21:25:44,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:44,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 43 conjunts are in the unsatisfiable core [2021-10-06 21:25:44,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:44,718 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 17 proven. 192 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-06 21:25:44,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:45,904 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 115 proven. 102 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:25:45,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:45,904 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413745934] [2021-10-06 21:25:45,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413745934] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:25:45,905 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:25:45,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 18] total 27 [2021-10-06 21:25:45,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330572454] [2021-10-06 21:25:45,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-10-06 21:25:45,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:45,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-10-06 21:25:45,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:25:45,906 INFO L87 Difference]: Start difference. First operand 102872 states and 376436 transitions. Second operand has 28 states, 28 states have (on average 3.25) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:48,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:25:48,346 INFO L93 Difference]: Finished difference Result 186704 states and 685869 transitions. [2021-10-06 21:25:48,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:25:48,347 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.25) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 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 50 [2021-10-06 21:25:48,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:25:50,141 INFO L225 Difference]: With dead ends: 186704 [2021-10-06 21:25:50,142 INFO L226 Difference]: Without dead ends: 184190 [2021-10-06 21:25:50,142 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 849.8ms TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2021-10-06 21:25:50,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184190 states. [2021-10-06 21:25:55,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184190 to 131428. [2021-10-06 21:25:55,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131428 states, 131427 states have (on average 3.694910482625336) internal successors, (485611), 131427 states have internal predecessors, (485611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131428 states to 131428 states and 485611 transitions. [2021-10-06 21:25:57,433 INFO L78 Accepts]: Start accepts. Automaton has 131428 states and 485611 transitions. Word has length 50 [2021-10-06 21:25:57,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:25:57,434 INFO L470 AbstractCegarLoop]: Abstraction has 131428 states and 485611 transitions. [2021-10-06 21:25:57,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.25) internal successors, (91), 27 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:25:57,436 INFO L276 IsEmpty]: Start isEmpty. Operand 131428 states and 485611 transitions. [2021-10-06 21:25:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-06 21:25:57,588 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:25:57,590 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:25:57,605 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2021-10-06 21:25:57,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:25:57,803 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:25:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:25:57,804 INFO L82 PathProgramCache]: Analyzing trace with hash 1567953178, now seen corresponding path program 8 times [2021-10-06 21:25:57,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:25:57,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [497975684] [2021-10-06 21:25:57,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-06 21:25:57,805 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:25:57,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:25:57,808 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:25:57,843 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2021-10-06 21:25:58,368 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-06 21:25:58,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:25:58,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-06 21:25:58,381 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:25:58,578 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 17 proven. 192 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-06 21:25:58,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:25:59,032 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 17 proven. 192 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-06 21:25:59,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:25:59,032 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [497975684] [2021-10-06 21:25:59,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [497975684] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:25:59,033 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:25:59,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2021-10-06 21:25:59,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793921452] [2021-10-06 21:25:59,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-06 21:25:59,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:25:59,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-06 21:25:59,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:25:59,034 INFO L87 Difference]: Start difference. First operand 131428 states and 485611 transitions. Second operand has 20 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:02,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:26:02,821 INFO L93 Difference]: Finished difference Result 239312 states and 886682 transitions. [2021-10-06 21:26:02,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-06 21:26:02,822 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 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 50 [2021-10-06 21:26:02,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:26:05,654 INFO L225 Difference]: With dead ends: 239312 [2021-10-06 21:26:05,654 INFO L226 Difference]: Without dead ends: 236398 [2021-10-06 21:26:05,654 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 332.2ms TimeCoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2021-10-06 21:26:06,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236398 states. [2021-10-06 21:26:12,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236398 to 160222. [2021-10-06 21:26:12,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160222 states, 160221 states have (on average 3.7143570443325156) internal successors, (595118), 160221 states have internal predecessors, (595118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:14,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160222 states to 160222 states and 595118 transitions. [2021-10-06 21:26:14,783 INFO L78 Accepts]: Start accepts. Automaton has 160222 states and 595118 transitions. Word has length 50 [2021-10-06 21:26:14,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:26:14,783 INFO L470 AbstractCegarLoop]: Abstraction has 160222 states and 595118 transitions. [2021-10-06 21:26:14,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.55) internal successors, (91), 19 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:26:14,783 INFO L276 IsEmpty]: Start isEmpty. Operand 160222 states and 595118 transitions. [2021-10-06 21:26:14,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-10-06 21:26:14,918 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:26:14,918 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:26:14,933 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2021-10-06 21:26:15,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:26:15,133 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:26:15,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:26:15,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1376641623, now seen corresponding path program 5 times [2021-10-06 21:26:15,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:26:15,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [964587913] [2021-10-06 21:26:15,136 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-06 21:26:15,136 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:26:15,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:26:15,137 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:26:15,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2021-10-06 21:26:15,564 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s) [2021-10-06 21:26:15,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:26:15,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 23 conjunts are in the unsatisfiable core [2021-10-06 21:26:15,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:26:15,893 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 2 proven. 228 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:26:15,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:26:16,732 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 2 proven. 228 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-06 21:26:16,732 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:26:16,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [964587913] [2021-10-06 21:26:16,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [964587913] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:26:16,732 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:26:16,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2021-10-06 21:26:16,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436228835] [2021-10-06 21:26:16,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-10-06 21:26:16,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:26:16,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-10-06 21:26:16,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=940, Unknown=0, NotChecked=0, Total=1260 [2021-10-06 21:26:16,734 INFO L87 Difference]: Start difference. First operand 160222 states and 595118 transitions. Second operand has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:27:14,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:27:14,400 INFO L93 Difference]: Finished difference Result 860474 states and 3210878 transitions. [2021-10-06 21:27:14,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 263 states. [2021-10-06 21:27:14,401 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 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 52 [2021-10-06 21:27:14,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:27:28,524 INFO L225 Difference]: With dead ends: 860474 [2021-10-06 21:27:28,524 INFO L226 Difference]: Without dead ends: 859074 [2021-10-06 21:27:28,530 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31155 ImplicationChecksByTransitivity, 37541.4ms TimeCoverageRelationStatistics Valid=15725, Invalid=62395, Unknown=0, NotChecked=0, Total=78120 [2021-10-06 21:27:31,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859074 states. [2021-10-06 21:28:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859074 to 120646. [2021-10-06 21:28:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120646 states, 120645 states have (on average 3.710837581333665) internal successors, (447694), 120645 states have internal predecessors, (447694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:02,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120646 states to 120646 states and 447694 transitions. [2021-10-06 21:28:02,674 INFO L78 Accepts]: Start accepts. Automaton has 120646 states and 447694 transitions. Word has length 52 [2021-10-06 21:28:02,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:02,675 INFO L470 AbstractCegarLoop]: Abstraction has 120646 states and 447694 transitions. [2021-10-06 21:28:02,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 2.6944444444444446) internal successors, (97), 35 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:02,675 INFO L276 IsEmpty]: Start isEmpty. Operand 120646 states and 447694 transitions. [2021-10-06 21:28:02,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-06 21:28:02,746 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:02,746 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:02,757 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2021-10-06 21:28:02,947 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:02,947 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:02,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:02,949 INFO L82 PathProgramCache]: Analyzing trace with hash -712094812, now seen corresponding path program 10 times [2021-10-06 21:28:02,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:02,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [289470584] [2021-10-06 21:28:02,950 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-06 21:28:02,951 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:02,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:02,954 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:02,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2021-10-06 21:28:03,413 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-06 21:28:03,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:03,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-06 21:28:03,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:03,629 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 19 proven. 243 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-06 21:28:03,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 19 proven. 243 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-06 21:28:04,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:04,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [289470584] [2021-10-06 21:28:04,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [289470584] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:04,133 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:04,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-10-06 21:28:04,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022644018] [2021-10-06 21:28:04,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-06 21:28:04,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:04,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-06 21:28:04,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:28:04,135 INFO L87 Difference]: Start difference. First operand 120646 states and 447694 transitions. Second operand has 22 states, 22 states have (on average 4.5) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:07,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:07,558 INFO L93 Difference]: Finished difference Result 227662 states and 846558 transitions. [2021-10-06 21:28:07,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:28:07,566 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 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 54 [2021-10-06 21:28:07,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:09,234 INFO L225 Difference]: With dead ends: 227662 [2021-10-06 21:28:09,234 INFO L226 Difference]: Without dead ends: 225036 [2021-10-06 21:28:09,234 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 388.8ms TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-10-06 21:28:10,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225036 states. [2021-10-06 21:28:16,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225036 to 150790. [2021-10-06 21:28:16,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150790 states, 150789 states have (on average 3.7297017686966556) internal successors, (562398), 150789 states have internal predecessors, (562398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:18,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150790 states to 150790 states and 562398 transitions. [2021-10-06 21:28:18,347 INFO L78 Accepts]: Start accepts. Automaton has 150790 states and 562398 transitions. Word has length 54 [2021-10-06 21:28:18,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:18,348 INFO L470 AbstractCegarLoop]: Abstraction has 150790 states and 562398 transitions. [2021-10-06 21:28:18,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.5) internal successors, (99), 21 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:18,348 INFO L276 IsEmpty]: Start isEmpty. Operand 150790 states and 562398 transitions. [2021-10-06 21:28:18,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-10-06 21:28:18,465 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:18,466 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:18,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:18,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:18,680 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:18,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:18,681 INFO L82 PathProgramCache]: Analyzing trace with hash 1834842457, now seen corresponding path program 9 times [2021-10-06 21:28:18,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:18,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2032250958] [2021-10-06 21:28:18,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-06 21:28:18,683 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:18,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:18,684 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:18,685 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2021-10-06 21:28:19,250 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-10-06 21:28:19,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:19,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 48 conjunts are in the unsatisfiable core [2021-10-06 21:28:19,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:19,511 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 19 proven. 243 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-10-06 21:28:19,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:20,929 INFO L134 CoverageAnalysis]: Checked inductivity of 271 backedges. 144 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-06 21:28:20,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:20,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2032250958] [2021-10-06 21:28:20,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2032250958] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:20,929 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:20,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20] total 30 [2021-10-06 21:28:20,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125716812] [2021-10-06 21:28:20,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-10-06 21:28:20,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:20,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-10-06 21:28:20,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:28:20,931 INFO L87 Difference]: Start difference. First operand 150790 states and 562398 transitions. Second operand has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 30 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:26,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:28:26,664 INFO L93 Difference]: Finished difference Result 289118 states and 1079941 transitions. [2021-10-06 21:28:26,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-06 21:28:26,665 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 30 states have internal predecessors, (99), 0 states have call successors, (0), 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 54 [2021-10-06 21:28:26,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:28:29,738 INFO L225 Difference]: With dead ends: 289118 [2021-10-06 21:28:29,738 INFO L226 Difference]: Without dead ends: 286000 [2021-10-06 21:28:29,738 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1068.7ms TimeCoverageRelationStatistics Valid=244, Invalid=686, Unknown=0, NotChecked=0, Total=930 [2021-10-06 21:28:30,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286000 states. [2021-10-06 21:28:38,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286000 to 185660. [2021-10-06 21:28:39,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185660 states, 185659 states have (on average 3.74236638137661) internal successors, (694804), 185659 states have internal predecessors, (694804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:41,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185660 states to 185660 states and 694804 transitions. [2021-10-06 21:28:41,282 INFO L78 Accepts]: Start accepts. Automaton has 185660 states and 694804 transitions. Word has length 54 [2021-10-06 21:28:41,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-06 21:28:41,283 INFO L470 AbstractCegarLoop]: Abstraction has 185660 states and 694804 transitions. [2021-10-06 21:28:41,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 3.193548387096774) internal successors, (99), 30 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:28:41,283 INFO L276 IsEmpty]: Start isEmpty. Operand 185660 states and 694804 transitions. [2021-10-06 21:28:41,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-10-06 21:28:41,407 INFO L504 BasicCegarLoop]: Found error trace [2021-10-06 21:28:41,407 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-06 21:28:41,420 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2021-10-06 21:28:41,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:28:41,607 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 13 more)] === [2021-10-06 21:28:41,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-06 21:28:41,608 INFO L82 PathProgramCache]: Analyzing trace with hash 1146323978, now seen corresponding path program 6 times [2021-10-06 21:28:41,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-06 21:28:41,609 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437760993] [2021-10-06 21:28:41,609 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-06 21:28:41,609 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-06 21:28:41,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-06 21:28:41,610 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-06 21:28:41,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2021-10-06 21:28:42,250 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2021-10-06 21:28:42,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-06 21:28:42,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 25 conjunts are in the unsatisfiable core [2021-10-06 21:28:42,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-06 21:28:42,611 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:28:42,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-06 21:28:44,140 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-06 21:28:44,140 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-06 21:28:44,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [437760993] [2021-10-06 21:28:44,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [437760993] provided 0 perfect and 2 imperfect interpolant sequences [2021-10-06 21:28:44,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-06 21:28:44,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37 [2021-10-06 21:28:44,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656239639] [2021-10-06 21:28:44,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-10-06 21:28:44,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-06 21:28:44,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-10-06 21:28:44,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1053, Unknown=0, NotChecked=0, Total=1406 [2021-10-06 21:28:44,143 INFO L87 Difference]: Start difference. First operand 185660 states and 694804 transitions. Second operand has 38 states, 38 states have (on average 2.8157894736842106) internal successors, (107), 37 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-06 21:29:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-06 21:29:56,940 INFO L93 Difference]: Finished difference Result 1236568 states and 4618178 transitions. [2021-10-06 21:29:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 287 states. [2021-10-06 21:29:56,941 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 2.8157894736842106) internal successors, (107), 37 states have internal predecessors, (107), 0 states have call successors, (0), 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 56 [2021-10-06 21:29:56,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-06 21:30:19,999 INFO L225 Difference]: With dead ends: 1236568 [2021-10-06 21:30:20,002 INFO L226 Difference]: Without dead ends: 1234904 [2021-10-06 21:30:20,014 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 303 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37161 ImplicationChecksByTransitivity, 45973.9ms TimeCoverageRelationStatistics Valid=18300, Invalid=74420, Unknown=0, NotChecked=0, Total=92720 [2021-10-06 21:30:24,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1234904 states. Received shutdown request... [2021-10-06 21:30:31,631 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:30:31,647 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:30:31,647 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2021-10-06 21:30:31,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2021-10-06 21:30:31,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-06 21:30:31,848 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2021-10-06 21:30:31,850 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-06 21:30:31,850 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-06 21:30:31,851 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-06 21:30:31,851 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-06 21:30:31,851 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-06 21:30:31,851 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-06 21:30:31,851 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-06 21:30:31,851 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-06 21:30:31,852 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr8REQUIRES_VIOLATION [2021-10-06 21:30:31,852 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr9REQUIRES_VIOLATION [2021-10-06 21:30:31,852 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr10REQUIRES_VIOLATION [2021-10-06 21:30:31,853 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr11REQUIRES_VIOLATION [2021-10-06 21:30:31,853 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK [2021-10-06 21:30:31,853 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-06 21:30:31,853 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-06 21:30:31,853 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION [2021-10-06 21:30:31,859 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-06 21:30:31,859 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-06 21:30:31,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 09:30:31 BasicIcfg [2021-10-06 21:30:31,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-06 21:30:31,868 INFO L168 Benchmark]: Toolchain (without parser) took 586781.36 ms. Allocated memory was 159.4 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 138.7 MB in the beginning and 4.9 GB in the end (delta: -4.8 GB). Peak memory consumption was 4.4 GB. Max. memory is 8.0 GB. [2021-10-06 21:30:31,868 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 159.4 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-06 21:30:31,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.35 ms. Allocated memory is still 159.4 MB. Free memory was 138.4 MB in the beginning and 141.4 MB in the end (delta: -3.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. [2021-10-06 21:30:31,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.57 ms. Allocated memory is still 159.4 MB. Free memory was 141.3 MB in the beginning and 139.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-06 21:30:31,873 INFO L168 Benchmark]: Boogie Preprocessor took 39.00 ms. Allocated memory is still 159.4 MB. Free memory was 139.6 MB in the beginning and 138.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-06 21:30:31,876 INFO L168 Benchmark]: RCFGBuilder took 969.87 ms. Allocated memory is still 159.4 MB. Free memory was 138.1 MB in the beginning and 118.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-10-06 21:30:31,883 INFO L168 Benchmark]: TraceAbstraction took 585222.65 ms. Allocated memory was 159.4 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 117.6 MB in the beginning and 4.9 GB in the end (delta: -4.8 GB). Peak memory consumption was 4.4 GB. Max. memory is 8.0 GB. [2021-10-06 21:30:31,889 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 159.4 MB. Free memory is still 130.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 472.35 ms. Allocated memory is still 159.4 MB. Free memory was 138.4 MB in the beginning and 141.4 MB in the end (delta: -3.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 54.57 ms. Allocated memory is still 159.4 MB. Free memory was 141.3 MB in the beginning and 139.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.00 ms. Allocated memory is still 159.4 MB. Free memory was 139.6 MB in the beginning and 138.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 969.87 ms. Allocated memory is still 159.4 MB. Free memory was 138.1 MB in the beginning and 118.2 MB in the end (delta: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 585222.65 ms. Allocated memory was 159.4 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 117.6 MB in the beginning and 4.9 GB in the end (delta: -4.8 GB). Peak memory consumption was 4.4 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11865.9ms, 112 PlacesBefore, 47 PlacesAfterwards, 109 TransitionsBefore, 41 TransitionsAfterwards, 1322 CoEnabledTransitionPairs, 6 FixpointIterations, 52 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 103 TotalNumberOfCompositions, 2805 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1802, positive: 1731, positive conditional: 0, positive unconditional: 1731, negative: 71, negative conditional: 0, negative unconditional: 71, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 929, positive: 905, positive conditional: 0, positive unconditional: 905, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 929, positive: 898, positive conditional: 0, positive unconditional: 898, negative: 31, negative conditional: 0, negative unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 31, positive: 7, positive conditional: 0, positive unconditional: 7, negative: 24, negative conditional: 0, negative unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 276, positive: 168, positive conditional: 0, positive unconditional: 168, negative: 108, negative conditional: 0, negative unconditional: 108, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1802, positive: 826, positive conditional: 0, positive unconditional: 826, negative: 47, negative conditional: 0, negative unconditional: 47, unknown: 929, unknown conditional: 0, unknown unconditional: 929] , Statistics on independence cache: Total cache size (in pairs): 131, Positive cache size: 121, Positive conditional cache size: 0, Positive unconditional cache size: 121, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - 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 - TimeoutResultAtElement [Line: 106]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that pointer dereference always succeeds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 87]: Timeout (TraceAbstraction) Unable to prove that all allocated memory was freed Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 128 locations, 17 error locations. Started 1 CEGAR loops. OverallTime: 585046.8ms, OverallIterations: 40, TraceHistogramMax: 15, EmptinessCheckTime: 2806.3ms, AutomataDifference: 363515.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 11967.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 3327 SDtfs, 74782 SDslu, 26898 SDs, 0 SdLazy, 15383 SolverSat, 27976 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 39672.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3623 GetRequests, 1794 SyntacticMatches, 0 SemanticMatches, 1829 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139335 ImplicationChecksByTransitivity, 176873.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=185660occurred in iteration=39, InterpolantAutomatonStates: 1634, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 166142.9ms AutomataMinimizationTime, 40 MinimizatonAttempts, 2503548 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 442.0ms SsaConstructionTime, 3228.0ms SatisfiabilityAnalysisTime, 21935.8ms InterpolantComputationTime, 1193 NumberOfCodeBlocks, 1193 NumberOfCodeBlocksAsserted, 135 NumberOfCheckSat, 2306 ConstructedInterpolants, 6 QuantifiedInterpolants, 9350 SizeOfPredicates, 312 NumberOfNonLiveVariables, 4671 ConjunctsInSsa, 607 ConjunctsInUnsatCore, 80 InterpolantComputations, 22 PerfectInterpolantSequences, 1025/6292 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 RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2021-10-06 21:30:31,962 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 !ENTRY org.eclipse.osgi 4 0 2021-10-06 21:30:32.163 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c01d4fa03/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:191) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c01d4fa03/.metadata/.log.