/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-bakery-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-8c2bbc9 [2021-10-07 15:44:49,007 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-07 15:44:49,010 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-07 15:44:49,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-10-07 15:44:49,101 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-10-07 15:44:49,130 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-07 15:44:49,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-07 15:44:49,130 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-07 15:44:49,131 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-07 15:44:49,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-07 15:44:49,134 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-07 15:44:49,134 INFO L138 SettingsManager]: * Use SBE=true [2021-10-07 15:44:49,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-07 15:44:49,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-07 15:44:49,135 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-07 15:44:49,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-07 15:44:49,135 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-07 15:44:49,135 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-07 15:44:49,135 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-10-07 15:44:49,136 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-10-07 15:44:49,137 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-10-07 15:44:49,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-07 15:44:49,137 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-07 15:44:49,137 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-07 15:44:49,138 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-07 15:44:49,138 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-07 15:44:49,138 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-07 15:44:49,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-07 15:44:49,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-07 15:44:49,139 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-07 15:44:49,139 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:44:49,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-07 15:44:49,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-07 15:44:49,139 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-07 15:44:49,140 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-07 15:44:49,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-07 15:44:49,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-07 15:44:49,140 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-10-07 15:44:49,539 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-07 15:44:49,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-07 15:44:49,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-07 15:44:49,585 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-07 15:44:49,586 INFO L275 PluginConnector]: CDTParser initialized [2021-10-07 15:44:49,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2021-10-07 15:44:49,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d36400d5b/bac74d7458114eada52510d2da519594/FLAG82781e535 [2021-10-07 15:44:50,296 INFO L306 CDTParser]: Found 1 translation units. [2021-10-07 15:44:50,297 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/releaseScripts/default/sv-benchmarks/c/weaver/parallel-bakery-2.wvr.c [2021-10-07 15:44:50,314 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d36400d5b/bac74d7458114eada52510d2da519594/FLAG82781e535 [2021-10-07 15:44:50,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d36400d5b/bac74d7458114eada52510d2da519594 [2021-10-07 15:44:50,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-07 15:44:50,345 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-10-07 15:44:50,347 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-07 15:44:50,347 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-07 15:44:50,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-07 15:44:50,352 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:44:50" (1/1) ... [2021-10-07 15:44:50,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465f5b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:50, skipping insertion in model container [2021-10-07 15:44:50,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 03:44:50" (1/1) ... [2021-10-07 15:44:50,362 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-07 15:44:50,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-07 15:44:50,579 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-bakery-2.wvr.c[2495,2508] [2021-10-07 15:44:50,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:44:50,597 INFO L203 MainTranslator]: Completed pre-run [2021-10-07 15:44:50,623 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-bakery-2.wvr.c[2495,2508] [2021-10-07 15:44:50,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-07 15:44:50,644 INFO L208 MainTranslator]: Completed translation [2021-10-07 15:44:50,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:50 WrapperNode [2021-10-07 15:44:50,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-07 15:44:50,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-07 15:44:50,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-07 15:44:50,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-07 15:44:50,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:50" (1/1) ... [2021-10-07 15:44:50,685 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:50" (1/1) ... [2021-10-07 15:44:50,729 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-07 15:44:50,730 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-07 15:44:50,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-07 15:44:50,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-07 15:44:50,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:50" (1/1) ... [2021-10-07 15:44:50,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:50" (1/1) ... [2021-10-07 15:44:50,753 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:50" (1/1) ... [2021-10-07 15:44:50,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:50" (1/1) ... [2021-10-07 15:44:50,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:50" (1/1) ... [2021-10-07 15:44:50,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:50" (1/1) ... [2021-10-07 15:44:50,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:50" (1/1) ... [2021-10-07 15:44:50,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-07 15:44:50,796 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-07 15:44:50,798 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-07 15:44:50,798 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-07 15:44:50,800 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:50" (1/1) ... [2021-10-07 15:44:50,810 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-07 15:44:50,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 [2021-10-07 15:44:50,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-07 15:44:50,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-07 15:44:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-10-07 15:44:50,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-10-07 15:44:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-10-07 15:44:50,912 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-10-07 15:44:50,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-07 15:44:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-07 15:44:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-07 15:44:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-07 15:44:50,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-07 15:44:50,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-07 15:44:50,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-07 15:44:50,915 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-10-07 15:44:51,356 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-07 15:44:51,358 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-07 15:44:51,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:44:51 BoogieIcfgContainer [2021-10-07 15:44:51,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-07 15:44:51,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-07 15:44:51,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-07 15:44:51,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-07 15:44:51,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 03:44:50" (1/3) ... [2021-10-07 15:44:51,370 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34417dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:44:51, skipping insertion in model container [2021-10-07 15:44:51,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 03:44:50" (2/3) ... [2021-10-07 15:44:51,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34417dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 03:44:51, skipping insertion in model container [2021-10-07 15:44:51,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 03:44:51" (3/3) ... [2021-10-07 15:44:51,373 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2021-10-07 15:44:51,379 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-07 15:44:51,379 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2021-10-07 15:44:51,380 INFO L516 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-10-07 15:44:51,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,450 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,451 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,452 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,453 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,454 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,455 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,455 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,455 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,455 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,456 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,456 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,456 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,456 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,457 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,457 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,457 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,458 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,458 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,458 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,459 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,459 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,459 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,460 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,460 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,460 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,460 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,460 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,461 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,461 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,461 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,461 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,462 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,463 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,464 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,465 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,466 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,466 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,466 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,467 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,467 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,468 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,468 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,468 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,468 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,469 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,470 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,470 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,470 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,478 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,478 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,479 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,479 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,479 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,480 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,480 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,480 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,481 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,481 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,481 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,482 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,482 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,489 WARN L313 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,489 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,489 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,490 WARN L313 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,500 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,500 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,501 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,501 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,503 WARN L313 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,504 WARN L313 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_assume_abort_if_not_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-10-07 15:44:51,515 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-10-07 15:44:51,573 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-07 15:44:51,581 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-07 15:44:51,581 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-10-07 15:44:51,599 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-10-07 15:44:51,612 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 140 places, 141 transitions, 298 flow [2021-10-07 15:44:51,615 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 140 places, 141 transitions, 298 flow [2021-10-07 15:44:51,617 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 140 places, 141 transitions, 298 flow [2021-10-07 15:44:51,708 INFO L129 PetriNetUnfolder]: 8/139 cut-off events. [2021-10-07 15:44:51,711 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-10-07 15:44:51,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 139 events. 8/139 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 82. Up to 2 conditions per place. [2021-10-07 15:44:51,726 INFO L116 LiptonReduction]: Number of co-enabled transitions 2856 [2021-10-07 15:45:01,805 INFO L131 LiptonReduction]: Checked pairs total: 9439 [2021-10-07 15:45:01,806 INFO L133 LiptonReduction]: Total number of compositions: 145 [2021-10-07 15:45:01,821 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 47 places, 45 transitions, 106 flow [2021-10-07 15:45:01,888 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 531 states, 521 states have (on average 2.927063339731286) internal successors, (1525), 530 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:01,892 INFO L276 IsEmpty]: Start isEmpty. Operand has 531 states, 521 states have (on average 2.927063339731286) internal successors, (1525), 530 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:01,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2021-10-07 15:45:01,899 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:01,900 INFO L512 BasicCegarLoop]: trace histogram [1] [2021-10-07 15:45:01,900 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:45:01,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:01,908 INFO L82 PathProgramCache]: Analyzing trace with hash 547, now seen corresponding path program 1 times [2021-10-07 15:45:01,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:01,920 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6495437] [2021-10-07 15:45:01,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:45:01,922 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:01,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:01,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:01,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-07 15:45:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:01,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-07 15:45:01,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:01,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:01,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:01,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:01,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:01,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6495437] [2021-10-07 15:45:01,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6495437] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:45:01,985 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:45:01,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0, 0] imperfect sequences [] total 0 [2021-10-07 15:45:01,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654852840] [2021-10-07 15:45:01,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-07 15:45:01,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:02,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-07 15:45:02,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:45:02,012 INFO L87 Difference]: Start difference. First operand has 531 states, 521 states have (on average 2.927063339731286) internal successors, (1525), 530 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:02,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:02,051 INFO L93 Difference]: Finished difference Result 528 states and 1382 transitions. [2021-10-07 15:45:02,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-07 15:45:02,052 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2021-10-07 15:45:02,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:02,073 INFO L225 Difference]: With dead ends: 528 [2021-10-07 15:45:02,073 INFO L226 Difference]: Without dead ends: 528 [2021-10-07 15:45:02,075 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-07 15:45:02,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 528 states. [2021-10-07 15:45:02,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 528 to 528. [2021-10-07 15:45:02,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 521 states have (on average 2.652591170825336) internal successors, (1382), 527 states have internal predecessors, (1382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:02,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 1382 transitions. [2021-10-07 15:45:02,156 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 1382 transitions. Word has length 1 [2021-10-07 15:45:02,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:02,156 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 1382 transitions. [2021-10-07 15:45:02,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:02,157 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 1382 transitions. [2021-10-07 15:45:02,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:45:02,157 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:02,157 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:45:02,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:02,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:02,378 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:45:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:02,379 INFO L82 PathProgramCache]: Analyzing trace with hash 538552, now seen corresponding path program 1 times [2021-10-07 15:45:02,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:02,381 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [613877154] [2021-10-07 15:45:02,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:45:02,381 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:02,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:02,383 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:02,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-07 15:45:02,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:02,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:45:02,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:02,516 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 15:45:02,517 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-07 15:45:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:02,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:02,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:02,594 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:02,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [613877154] [2021-10-07 15:45:02,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [613877154] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:45:02,595 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:45:02,595 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:45:02,595 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892501338] [2021-10-07 15:45:02,600 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:45:02,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:02,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:45:02,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:45:02,601 INFO L87 Difference]: Start difference. First operand 528 states and 1382 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:02,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:02,686 INFO L93 Difference]: Finished difference Result 507 states and 1340 transitions. [2021-10-07 15:45:02,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:45:02,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:45:02,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:02,693 INFO L225 Difference]: With dead ends: 507 [2021-10-07 15:45:02,693 INFO L226 Difference]: Without dead ends: 507 [2021-10-07 15:45:02,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 16.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:45:02,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-10-07 15:45:02,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2021-10-07 15:45:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 502 states have (on average 2.6693227091633465) internal successors, (1340), 506 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:02,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 1340 transitions. [2021-10-07 15:45:02,751 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 1340 transitions. Word has length 3 [2021-10-07 15:45:02,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:02,755 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 1340 transitions. [2021-10-07 15:45:02,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:02,756 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 1340 transitions. [2021-10-07 15:45:02,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-07 15:45:02,756 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:02,756 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-07 15:45:02,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:02,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:02,967 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:45:02,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:02,969 INFO L82 PathProgramCache]: Analyzing trace with hash 538553, now seen corresponding path program 1 times [2021-10-07 15:45:02,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:02,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [530669287] [2021-10-07 15:45:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:45:02,971 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:02,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:02,972 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:02,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-07 15:45:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:03,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:45:03,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:03,114 INFO L354 Elim1Store]: treesize reduction 76, result has 30.3 percent of original size [2021-10-07 15:45:03,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 38 [2021-10-07 15:45:03,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:03,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:03,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:03,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:03,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [530669287] [2021-10-07 15:45:03,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [530669287] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:45:03,270 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:45:03,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2021-10-07 15:45:03,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343098786] [2021-10-07 15:45:03,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:45:03,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:03,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:45:03,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:45:03,272 INFO L87 Difference]: Start difference. First operand 507 states and 1340 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:03,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:03,303 INFO L93 Difference]: Finished difference Result 486 states and 1298 transitions. [2021-10-07 15:45:03,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:45:03,304 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-10-07 15:45:03,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:03,310 INFO L225 Difference]: With dead ends: 486 [2021-10-07 15:45:03,310 INFO L226 Difference]: Without dead ends: 486 [2021-10-07 15:45:03,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:45:03,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2021-10-07 15:45:03,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 486. [2021-10-07 15:45:03,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 483 states have (on average 2.6873706004140785) internal successors, (1298), 485 states have internal predecessors, (1298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1298 transitions. [2021-10-07 15:45:03,337 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1298 transitions. Word has length 3 [2021-10-07 15:45:03,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:03,337 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1298 transitions. [2021-10-07 15:45:03,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1298 transitions. [2021-10-07 15:45:03,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:45:03,338 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:03,338 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:45:03,355 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:03,552 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:03,554 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:45:03,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:03,555 INFO L82 PathProgramCache]: Analyzing trace with hash 517562361, now seen corresponding path program 1 times [2021-10-07 15:45:03,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:03,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [645825712] [2021-10-07 15:45:03,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:45:03,556 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:03,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:03,558 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:03,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-07 15:45:03,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:03,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-07 15:45:03,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:03,628 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-10-07 15:45:03,629 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-10-07 15:45:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:03,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:03,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:03,685 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:03,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [645825712] [2021-10-07 15:45:03,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [645825712] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:45:03,686 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:45:03,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:45:03,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864204118] [2021-10-07 15:45:03,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:45:03,687 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:03,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:45:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:45:03,690 INFO L87 Difference]: Start difference. First operand 486 states and 1298 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:03,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:03,717 INFO L93 Difference]: Finished difference Result 376 states and 968 transitions. [2021-10-07 15:45:03,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:45:03,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:45:03,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:03,724 INFO L225 Difference]: With dead ends: 376 [2021-10-07 15:45:03,724 INFO L226 Difference]: Without dead ends: 376 [2021-10-07 15:45:03,724 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:45:03,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2021-10-07 15:45:03,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 376. [2021-10-07 15:45:03,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 374 states have (on average 2.588235294117647) internal successors, (968), 375 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:03,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 968 transitions. [2021-10-07 15:45:03,743 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 968 transitions. Word has length 5 [2021-10-07 15:45:03,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:03,744 INFO L470 AbstractCegarLoop]: Abstraction has 376 states and 968 transitions. [2021-10-07 15:45:03,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:03,744 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 968 transitions. [2021-10-07 15:45:03,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-07 15:45:03,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:03,745 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-07 15:45:03,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:03,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:03,958 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:45:03,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:03,960 INFO L82 PathProgramCache]: Analyzing trace with hash 517562362, now seen corresponding path program 1 times [2021-10-07 15:45:03,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:03,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602005549] [2021-10-07 15:45:03,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:45:03,961 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:03,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:03,963 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:03,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-07 15:45:04,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:04,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-07 15:45:04,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:04,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:04,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:04,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:04,201 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:04,201 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602005549] [2021-10-07 15:45:04,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602005549] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:45:04,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:45:04,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2021-10-07 15:45:04,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607040188] [2021-10-07 15:45:04,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-07 15:45:04,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:04,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-07 15:45:04,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:45:04,204 INFO L87 Difference]: Start difference. First operand 376 states and 968 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:04,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:04,223 INFO L93 Difference]: Finished difference Result 266 states and 638 transitions. [2021-10-07 15:45:04,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:45:04,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-07 15:45:04,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:04,226 INFO L225 Difference]: With dead ends: 266 [2021-10-07 15:45:04,226 INFO L226 Difference]: Without dead ends: 266 [2021-10-07 15:45:04,226 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-07 15:45:04,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-07 15:45:04,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-10-07 15:45:04,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.4075471698113207) internal successors, (638), 265 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:04,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 638 transitions. [2021-10-07 15:45:04,242 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 638 transitions. Word has length 5 [2021-10-07 15:45:04,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:04,243 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 638 transitions. [2021-10-07 15:45:04,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:04,244 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 638 transitions. [2021-10-07 15:45:04,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:45:04,252 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:04,252 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, 1, 1, 1, 1] [2021-10-07 15:45:04,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:04,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:04,467 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:45:04,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:04,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1756906322, now seen corresponding path program 1 times [2021-10-07 15:45:04,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:04,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854889228] [2021-10-07 15:45:04,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:45:04,470 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:04,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:04,471 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:04,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-07 15:45:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:04,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-07 15:45:04,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:04,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:04,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:04,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:04,659 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:04,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854889228] [2021-10-07 15:45:04,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854889228] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:45:04,660 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:45:04,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-07 15:45:04,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824039257] [2021-10-07 15:45:04,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-07 15:45:04,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:04,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-07 15:45:04,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:45:04,662 INFO L87 Difference]: Start difference. First operand 266 states and 638 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:04,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:04,696 INFO L93 Difference]: Finished difference Result 266 states and 632 transitions. [2021-10-07 15:45:04,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-07 15:45:04,697 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:45:04,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:04,699 INFO L225 Difference]: With dead ends: 266 [2021-10-07 15:45:04,699 INFO L226 Difference]: Without dead ends: 266 [2021-10-07 15:45:04,699 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-07 15:45:04,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2021-10-07 15:45:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2021-10-07 15:45:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 2.3849056603773584) internal successors, (632), 265 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 632 transitions. [2021-10-07 15:45:04,708 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 632 transitions. Word has length 24 [2021-10-07 15:45:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:04,709 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 632 transitions. [2021-10-07 15:45:04,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 632 transitions. [2021-10-07 15:45:04,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:45:04,711 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:04,711 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, 1, 1, 1, 1] [2021-10-07 15:45:04,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:04,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:04,928 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:45:04,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:04,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1746394902, now seen corresponding path program 2 times [2021-10-07 15:45:04,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:04,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313968129] [2021-10-07 15:45:04,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-07 15:45:04,931 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:04,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:04,932 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:04,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-07 15:45:05,010 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:45:05,010 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:05,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:45:05,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:05,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:05,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:05,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:05,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:05,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313968129] [2021-10-07 15:45:05,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1313968129] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:45:05,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:45:05,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-07 15:45:05,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326238412] [2021-10-07 15:45:05,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:45:05,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:05,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:45:05,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:45:05,760 INFO L87 Difference]: Start difference. First operand 266 states and 632 transitions. Second operand has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:06,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:06,240 INFO L93 Difference]: Finished difference Result 304 states and 646 transitions. [2021-10-07 15:45:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-07 15:45:06,241 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:45:06,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:06,243 INFO L225 Difference]: With dead ends: 304 [2021-10-07 15:45:06,243 INFO L226 Difference]: Without dead ends: 290 [2021-10-07 15:45:06,244 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 414.4ms TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2021-10-07 15:45:06,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-10-07 15:45:06,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 260. [2021-10-07 15:45:06,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 259 states have (on average 2.2084942084942085) internal successors, (572), 259 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:06,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 572 transitions. [2021-10-07 15:45:06,254 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 572 transitions. Word has length 24 [2021-10-07 15:45:06,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:06,254 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 572 transitions. [2021-10-07 15:45:06,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:06,255 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 572 transitions. [2021-10-07 15:45:06,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:45:06,256 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:06,256 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, 1, 1, 1, 1] [2021-10-07 15:45:06,272 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-10-07 15:45:06,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:06,470 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:45:06,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:06,471 INFO L82 PathProgramCache]: Analyzing trace with hash -1981629406, now seen corresponding path program 3 times [2021-10-07 15:45:06,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:06,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346060951] [2021-10-07 15:45:06,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-07 15:45:06,472 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:06,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:06,474 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:06,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-07 15:45:06,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-10-07 15:45:06,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:06,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:45:06,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:06,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:06,753 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:06,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346060951] [2021-10-07 15:45:06,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346060951] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:45:06,753 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:45:06,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-07 15:45:06,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861932725] [2021-10-07 15:45:06,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:45:06,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:06,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:45:06,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:45:06,755 INFO L87 Difference]: Start difference. First operand 260 states and 572 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:06,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:06,862 INFO L93 Difference]: Finished difference Result 311 states and 651 transitions. [2021-10-07 15:45:06,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:45:06,863 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 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 24 [2021-10-07 15:45:06,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:06,865 INFO L225 Difference]: With dead ends: 311 [2021-10-07 15:45:06,865 INFO L226 Difference]: Without dead ends: 216 [2021-10-07 15:45:06,865 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 47.6ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:45:06,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-10-07 15:45:06,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 184. [2021-10-07 15:45:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.1639344262295084) internal successors, (396), 183 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:06,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 396 transitions. [2021-10-07 15:45:06,871 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 396 transitions. Word has length 24 [2021-10-07 15:45:06,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:06,872 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 396 transitions. [2021-10-07 15:45:06,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:06,872 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 396 transitions. [2021-10-07 15:45:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:45:06,873 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:06,873 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, 1, 1, 1, 1] [2021-10-07 15:45:06,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:07,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:07,090 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:45:07,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:07,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1714198780, now seen corresponding path program 4 times [2021-10-07 15:45:07,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:07,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783058064] [2021-10-07 15:45:07,092 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-07 15:45:07,092 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:07,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:07,093 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:07,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-07 15:45:07,192 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-07 15:45:07,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:07,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:45:07,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:07,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:07,379 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:07,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:07,809 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:07,810 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783058064] [2021-10-07 15:45:07,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783058064] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:45:07,810 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:45:07,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-07 15:45:07,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040055654] [2021-10-07 15:45:07,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-07 15:45:07,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:07,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-07 15:45:07,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:45:07,813 INFO L87 Difference]: Start difference. First operand 184 states and 396 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:08,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:08,017 INFO L93 Difference]: Finished difference Result 208 states and 434 transitions. [2021-10-07 15:45:08,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:45:08,018 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-07 15:45:08,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:08,019 INFO L225 Difference]: With dead ends: 208 [2021-10-07 15:45:08,020 INFO L226 Difference]: Without dead ends: 172 [2021-10-07 15:45:08,020 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 207.8ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:45:08,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-10-07 15:45:08,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2021-10-07 15:45:08,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 171 states have (on average 2.0935672514619883) internal successors, (358), 171 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:08,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 358 transitions. [2021-10-07 15:45:08,026 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 358 transitions. Word has length 24 [2021-10-07 15:45:08,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:08,027 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 358 transitions. [2021-10-07 15:45:08,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:08,027 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 358 transitions. [2021-10-07 15:45:08,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-07 15:45:08,028 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:08,028 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, 1, 1, 1, 1] [2021-10-07 15:45:08,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:08,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:08,230 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:45:08,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:08,231 INFO L82 PathProgramCache]: Analyzing trace with hash -94377094, now seen corresponding path program 5 times [2021-10-07 15:45:08,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:08,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185260526] [2021-10-07 15:45:08,233 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-07 15:45:08,233 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:08,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:08,235 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:08,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-07 15:45:08,345 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-10-07 15:45:08,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-07 15:45:08,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-07 15:45:08,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:08,452 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:08,524 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:08,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185260526] [2021-10-07 15:45:08,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185260526] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:45:08,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:45:08,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-10-07 15:45:08,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359595948] [2021-10-07 15:45:08,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-07 15:45:08,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:08,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-07 15:45:08,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-07 15:45:08,528 INFO L87 Difference]: Start difference. First operand 172 states and 358 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:08,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:08,617 INFO L93 Difference]: Finished difference Result 203 states and 405 transitions. [2021-10-07 15:45:08,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:45:08,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 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 24 [2021-10-07 15:45:08,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:08,619 INFO L225 Difference]: With dead ends: 203 [2021-10-07 15:45:08,619 INFO L226 Difference]: Without dead ends: 158 [2021-10-07 15:45:08,620 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-07 15:45:08,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-07 15:45:08,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 144. [2021-10-07 15:45:08,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 2.013986013986014) internal successors, (288), 143 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:08,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 288 transitions. [2021-10-07 15:45:08,625 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 288 transitions. Word has length 24 [2021-10-07 15:45:08,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:08,626 INFO L470 AbstractCegarLoop]: Abstraction has 144 states and 288 transitions. [2021-10-07 15:45:08,626 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:08,626 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 288 transitions. [2021-10-07 15:45:08,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-07 15:45:08,627 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:08,627 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, 1, 1, 1, 1, 1] [2021-10-07 15:45:08,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:08,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:08,839 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:45:08,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:08,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1110129382, now seen corresponding path program 1 times [2021-10-07 15:45:08,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:08,840 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264237780] [2021-10-07 15:45:08,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:45:08,840 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:08,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:08,841 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:08,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-07 15:45:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:08,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-07 15:45:08,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:09,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:09,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:09,459 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:09,460 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264237780] [2021-10-07 15:45:09,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264237780] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:45:09,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:45:09,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-07 15:45:09,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301899012] [2021-10-07 15:45:09,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-07 15:45:09,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:09,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-07 15:45:09,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-10-07 15:45:09,462 INFO L87 Difference]: Start difference. First operand 144 states and 288 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:09,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:09,646 INFO L93 Difference]: Finished difference Result 168 states and 334 transitions. [2021-10-07 15:45:09,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-07 15:45:09,647 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-10-07 15:45:09,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:09,648 INFO L225 Difference]: With dead ends: 168 [2021-10-07 15:45:09,648 INFO L226 Difference]: Without dead ends: 110 [2021-10-07 15:45:09,649 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 218.6ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:45:09,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2021-10-07 15:45:09,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2021-10-07 15:45:09,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.9908256880733946) internal successors, (217), 109 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:09,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 217 transitions. [2021-10-07 15:45:09,653 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 217 transitions. Word has length 25 [2021-10-07 15:45:09,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:09,653 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 217 transitions. [2021-10-07 15:45:09,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:09,653 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 217 transitions. [2021-10-07 15:45:09,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-07 15:45:09,654 INFO L504 BasicCegarLoop]: Found error trace [2021-10-07 15:45:09,654 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, 1, 1, 1, 1, 1, 1] [2021-10-07 15:45:09,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:09,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:09,855 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 8 more)] === [2021-10-07 15:45:09,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-07 15:45:09,856 INFO L82 PathProgramCache]: Analyzing trace with hash -954728884, now seen corresponding path program 1 times [2021-10-07 15:45:09,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-07 15:45:09,857 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750150722] [2021-10-07 15:45:09,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-07 15:45:09,858 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-07 15:45:09,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat [2021-10-07 15:45:09,859 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-07 15:45:09,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-07 15:45:09,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-07 15:45:09,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-07 15:45:09,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-07 15:45:10,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:10,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-07 15:45:10,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-07 15:45:10,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-07 15:45:10,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750150722] [2021-10-07 15:45:10,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750150722] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-07 15:45:10,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-07 15:45:10,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-07 15:45:10,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892120610] [2021-10-07 15:45:10,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-07 15:45:10,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-07 15:45:10,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-07 15:45:10,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-10-07 15:45:10,765 INFO L87 Difference]: Start difference. First operand 110 states and 217 transitions. Second operand has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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) [2021-10-07 15:45:11,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-07 15:45:11,006 INFO L93 Difference]: Finished difference Result 78 states and 155 transitions. [2021-10-07 15:45:11,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-07 15:45:11,007 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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 [2021-10-07 15:45:11,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-07 15:45:11,007 INFO L225 Difference]: With dead ends: 78 [2021-10-07 15:45:11,007 INFO L226 Difference]: Without dead ends: 0 [2021-10-07 15:45:11,008 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 376.3ms TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-10-07 15:45:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-07 15:45:11,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-07 15:45:11,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-07 15:45:11,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-07 15:45:11,009 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2021-10-07 15:45:11,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-07 15:45:11,009 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-07 15:45:11,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.8666666666666667) internal successors, (43), 14 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) [2021-10-07 15:45:11,009 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-07 15:45:11,010 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-07 15:45:11,012 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION [2021-10-07 15:45:11,012 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION [2021-10-07 15:45:11,013 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION [2021-10-07 15:45:11,013 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION [2021-10-07 15:45:11,013 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATION [2021-10-07 15:45:11,013 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATION [2021-10-07 15:45:11,013 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION [2021-10-07 15:45:11,013 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATION [2021-10-07 15:45:11,014 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:45:11,014 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK [2021-10-07 15:45:11,014 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-10-07 15:45:11,014 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-10-07 15:45:11,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-07 15:45:11,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-10-07 15:45:11,221 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-10-07 15:45:11,222 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-07 15:45:11,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.10 03:45:11 BasicIcfg [2021-10-07 15:45:11,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-07 15:45:11,225 INFO L168 Benchmark]: Toolchain (without parser) took 20887.34 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 133.3 MB in the beginning and 165.8 MB in the end (delta: -32.5 MB). Peak memory consumption was 39.7 MB. Max. memory is 8.0 GB. [2021-10-07 15:45:11,225 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 160.4 MB. Free memory is still 131.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-10-07 15:45:11,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.26 ms. Allocated memory is still 160.4 MB. Free memory was 133.0 MB in the beginning and 121.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-10-07 15:45:11,226 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.40 ms. Allocated memory is still 160.4 MB. Free memory was 121.9 MB in the beginning and 120.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-10-07 15:45:11,227 INFO L168 Benchmark]: Boogie Preprocessor took 64.55 ms. Allocated memory is still 160.4 MB. Free memory was 120.0 MB in the beginning and 118.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-10-07 15:45:11,227 INFO L168 Benchmark]: RCFGBuilder took 565.99 ms. Allocated memory is still 160.4 MB. Free memory was 118.7 MB in the beginning and 139.8 MB in the end (delta: -21.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2021-10-07 15:45:11,228 INFO L168 Benchmark]: TraceAbstraction took 19860.56 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 139.3 MB in the beginning and 165.8 MB in the end (delta: -26.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 8.0 GB. [2021-10-07 15:45:11,229 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 160.4 MB. Free memory is still 131.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 299.26 ms. Allocated memory is still 160.4 MB. Free memory was 133.0 MB in the beginning and 121.9 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 82.40 ms. Allocated memory is still 160.4 MB. Free memory was 121.9 MB in the beginning and 120.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.55 ms. Allocated memory is still 160.4 MB. Free memory was 120.0 MB in the beginning and 118.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 565.99 ms. Allocated memory is still 160.4 MB. Free memory was 118.7 MB in the beginning and 139.8 MB in the end (delta: -21.2 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 19860.56 ms. Allocated memory was 160.4 MB in the beginning and 231.7 MB in the end (delta: 71.3 MB). Free memory was 139.3 MB in the beginning and 165.8 MB in the end (delta: -26.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 10190.9ms, 140 PlacesBefore, 47 PlacesAfterwards, 141 TransitionsBefore, 45 TransitionsAfterwards, 2856 CoEnabledTransitionPairs, 7 FixpointIterations, 69 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 19 ConcurrentYvCompositions, 3 ChoiceCompositions, 145 TotalNumberOfCompositions, 9439 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4799, positive: 4524, positive conditional: 0, positive unconditional: 4524, negative: 275, negative conditional: 0, negative unconditional: 275, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2329, positive: 2231, positive conditional: 0, positive unconditional: 2231, negative: 98, negative conditional: 0, negative unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2329, positive: 2207, positive conditional: 0, positive unconditional: 2207, negative: 122, negative conditional: 0, negative unconditional: 122, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 122, positive: 24, positive conditional: 0, positive unconditional: 24, negative: 98, negative conditional: 0, negative unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 329, positive: 19, positive conditional: 0, positive unconditional: 19, negative: 311, negative conditional: 0, negative unconditional: 311, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 4799, positive: 2293, positive conditional: 0, positive unconditional: 2293, negative: 177, negative conditional: 0, negative unconditional: 177, unknown: 2329, unknown conditional: 0, unknown unconditional: 2329] , Statistics on independence cache: Total cache size (in pairs): 307, Positive cache size: 275, Positive conditional cache size: 0, Positive unconditional cache size: 275, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 88]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 88]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 89]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 89]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 90]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 90]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 91]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 91]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 94]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 73]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 188 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 19649.1ms, OverallIterations: 12, TraceHistogramMax: 1, EmptinessCheckTime: 27.8ms, AutomataDifference: 1648.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 10307.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 448 SDtfs, 498 SDslu, 1108 SDs, 0 SdLazy, 670 SolverSat, 53 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 908.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 373 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 1394.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=531occurred in iteration=0, InterpolantAutomatonStates: 69, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 223.3ms AutomataMinimizationTime, 12 MinimizatonAttempts, 76 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 113.8ms SsaConstructionTime, 349.6ms SatisfiabilityAnalysisTime, 3779.5ms InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 352 ConstructedInterpolants, 0 QuantifiedInterpolants, 1837 SizeOfPredicates, 75 NumberOfNonLiveVariables, 784 ConjunctsInSsa, 84 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-07 15:45:11,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...