/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 ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:37:15,721 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:37:15,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:37:15,789 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:37:15,790 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:37:15,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:37:15,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:37:15,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:37:15,810 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:37:15,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:37:15,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:37:15,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:37:15,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:37:15,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:37:15,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:37:15,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:37:15,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:37:15,834 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:37:15,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:37:15,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:37:15,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:37:15,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:37:15,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:37:15,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:37:15,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 15:37:15,907 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:37:15,908 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:37:15,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:37:15,910 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-11-09 15:37:15,966 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:37:15,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:37:15,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:37:15,971 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:37:15,971 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:37:15,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:37:15,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:37:15,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:37:15,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:37:15,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:37:15,974 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:37:15,974 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:37:15,974 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:37:15,974 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:37:15,975 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:37:15,975 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:37:15,975 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:37:15,975 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:37:15,975 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:37:15,976 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:37:15,976 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:37:15,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:37:15,977 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:37:15,977 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:37:15,977 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:37:15,977 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:37:15,977 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:37:15,977 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:37:15,978 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:37:15,978 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:37:15,978 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:37:16,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:37:16,463 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:37:16,467 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:37:16,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:37:16,469 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:37:16,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-11-09 15:37:16,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36e741150/19d43dbb19814c17ab121b9c240ed7f1/FLAGe3006320e [2020-11-09 15:37:17,305 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:37:17,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_tso.opt.i [2020-11-09 15:37:17,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36e741150/19d43dbb19814c17ab121b9c240ed7f1/FLAGe3006320e [2020-11-09 15:37:17,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36e741150/19d43dbb19814c17ab121b9c240ed7f1 [2020-11-09 15:37:17,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:37:17,570 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:37:17,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:37:17,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:37:17,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:37:17,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:37:17" (1/1) ... [2020-11-09 15:37:17,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f1272ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:17, skipping insertion in model container [2020-11-09 15:37:17,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:37:17" (1/1) ... [2020-11-09 15:37:17,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:37:17,664 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:37:18,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:37:18,017 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:37:18,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:37:18,207 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:37:18,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:18 WrapperNode [2020-11-09 15:37:18,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:37:18,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:37:18,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:37:18,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:37:18,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:18" (1/1) ... [2020-11-09 15:37:18,235 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:18" (1/1) ... [2020-11-09 15:37:18,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:37:18,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:37:18,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:37:18,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:37:18,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:18" (1/1) ... [2020-11-09 15:37:18,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:18" (1/1) ... [2020-11-09 15:37:18,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:18" (1/1) ... [2020-11-09 15:37:18,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:18" (1/1) ... [2020-11-09 15:37:18,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:18" (1/1) ... [2020-11-09 15:37:18,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:18" (1/1) ... [2020-11-09 15:37:18,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:18" (1/1) ... [2020-11-09 15:37:18,287 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:37:18,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:37:18,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:37:18,289 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:37:18,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:18" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:37:18,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:37:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:37:18,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:37:18,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:37:18,369 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:37:18,371 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:37:18,372 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:37:18,372 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:37:18,373 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:37:18,373 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:37:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:37:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:37:18,374 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:37:18,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:37:18,376 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 15:37:18,753 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:37:18,753 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:37:18,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:37:18 BoogieIcfgContainer [2020-11-09 15:37:18,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:37:18,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:37:18,759 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:37:18,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:37:18,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:37:17" (1/3) ... [2020-11-09 15:37:18,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2fb217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:37:18, skipping insertion in model container [2020-11-09 15:37:18,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:37:18" (2/3) ... [2020-11-09 15:37:18,764 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2fb217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:37:18, skipping insertion in model container [2020-11-09 15:37:18,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:37:18" (3/3) ... [2020-11-09 15:37:18,766 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_tso.opt.i [2020-11-09 15:37:18,784 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:37:18,785 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:37:18,788 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:37:18,789 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:37:18,849 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,849 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,850 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,850 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,850 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,850 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,851 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,851 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,852 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,853 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,853 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,854 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,854 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,854 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,855 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,856 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,856 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,857 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,857 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,857 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,858 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,858 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,858 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,859 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,861 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,862 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,862 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,894 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,894 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,895 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,895 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,897 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,898 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,898 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,898 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:37:18,900 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:37:18,914 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 15:37:18,943 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:37:18,943 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:37:18,943 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:37:18,943 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:37:18,943 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:37:18,944 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:37:18,944 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:37:18,944 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:37:18,965 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:37:18,966 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 15:37:18,969 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 85 places, 78 transitions, 171 flow [2020-11-09 15:37:18,971 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 78 transitions, 171 flow [2020-11-09 15:37:19,033 INFO L129 PetriNetUnfolder]: 3/75 cut-off events. [2020-11-09 15:37:19,033 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:37:19,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 85 conditions, 75 events. 3/75 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 15:37:19,049 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 15:37:22,106 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-11-09 15:37:22,299 WARN L194 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-11-09 15:37:22,461 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-09 15:37:23,005 WARN L194 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 15:37:23,116 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 15:37:23,362 WARN L194 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2020-11-09 15:37:23,479 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-11-09 15:37:23,486 INFO L131 LiptonReduction]: Checked pairs total: 2774 [2020-11-09 15:37:23,486 INFO L133 LiptonReduction]: Total number of compositions: 73 [2020-11-09 15:37:23,493 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-11-09 15:37:23,521 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-11-09 15:37:23,523 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-11-09 15:37:23,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:37:23,531 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:23,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:23,533 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:23,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:23,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1189021961, now seen corresponding path program 1 times [2020-11-09 15:37:23,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:23,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305266338] [2020-11-09 15:37:23,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:23,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:23,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305266338] [2020-11-09 15:37:23,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:23,814 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:37:23,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2084891081] [2020-11-09 15:37:23,816 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:23,820 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:23,836 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:37:23,837 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:23,842 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:23,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:23,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:23,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:23,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:23,865 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-11-09 15:37:23,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:23,914 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-11-09 15:37:23,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:23,916 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-09 15:37:23,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:23,932 INFO L225 Difference]: With dead ends: 282 [2020-11-09 15:37:23,933 INFO L226 Difference]: Without dead ends: 218 [2020-11-09 15:37:23,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:23,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-11-09 15:37:24,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-11-09 15:37:24,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-11-09 15:37:24,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-11-09 15:37:24,011 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-11-09 15:37:24,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:24,013 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-11-09 15:37:24,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:24,013 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-11-09 15:37:24,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 15:37:24,015 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:24,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:24,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:37:24,015 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:24,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:24,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1771488223, now seen corresponding path program 1 times [2020-11-09 15:37:24,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:24,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221374785] [2020-11-09 15:37:24,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:24,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:24,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221374785] [2020-11-09 15:37:24,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:24,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:37:24,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1419184126] [2020-11-09 15:37:24,093 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:24,094 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:24,097 INFO L252 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-11-09 15:37:24,097 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:24,118 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:24,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:24,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:24,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:24,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:24,121 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-11-09 15:37:24,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:24,147 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-11-09 15:37:24,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:24,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-09 15:37:24,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:24,150 INFO L225 Difference]: With dead ends: 202 [2020-11-09 15:37:24,150 INFO L226 Difference]: Without dead ends: 202 [2020-11-09 15:37:24,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-09 15:37:24,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-11-09 15:37:24,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-11-09 15:37:24,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-11-09 15:37:24,173 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-11-09 15:37:24,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:24,173 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-11-09 15:37:24,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:24,173 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-11-09 15:37:24,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-09 15:37:24,175 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:24,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:24,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:37:24,176 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:24,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:24,177 INFO L82 PathProgramCache]: Analyzing trace with hash -918442191, now seen corresponding path program 1 times [2020-11-09 15:37:24,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:24,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074234731] [2020-11-09 15:37:24,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:24,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:24,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074234731] [2020-11-09 15:37:24,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:24,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:37:24,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [485742774] [2020-11-09 15:37:24,260 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:24,261 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:24,265 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-11-09 15:37:24,265 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:24,374 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:24,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:24,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:24,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:24,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:24,379 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-11-09 15:37:24,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:24,386 INFO L93 Difference]: Finished difference Result 194 states and 518 transitions. [2020-11-09 15:37:24,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:24,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-11-09 15:37:24,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:24,389 INFO L225 Difference]: With dead ends: 194 [2020-11-09 15:37:24,389 INFO L226 Difference]: Without dead ends: 194 [2020-11-09 15:37:24,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:24,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-09 15:37:24,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-11-09 15:37:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-09 15:37:24,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 518 transitions. [2020-11-09 15:37:24,405 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 518 transitions. Word has length 10 [2020-11-09 15:37:24,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:24,405 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 518 transitions. [2020-11-09 15:37:24,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 518 transitions. [2020-11-09 15:37:24,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:37:24,407 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:24,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:24,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:37:24,408 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:24,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:24,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1592271914, now seen corresponding path program 1 times [2020-11-09 15:37:24,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:24,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649954343] [2020-11-09 15:37:24,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:24,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649954343] [2020-11-09 15:37:24,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:24,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:37:24,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [916522090] [2020-11-09 15:37:24,467 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:24,468 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:24,470 INFO L252 McrAutomatonBuilder]: Finished intersection with 17 states and 21 transitions. [2020-11-09 15:37:24,470 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:24,481 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:24,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:37:24,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:24,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:37:24,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:37:24,482 INFO L87 Difference]: Start difference. First operand 194 states and 518 transitions. Second operand 4 states. [2020-11-09 15:37:24,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:24,512 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-11-09 15:37:24,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:37:24,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-09 15:37:24,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:24,515 INFO L225 Difference]: With dead ends: 266 [2020-11-09 15:37:24,515 INFO L226 Difference]: Without dead ends: 194 [2020-11-09 15:37:24,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:37:24,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-09 15:37:24,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-11-09 15:37:24,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-11-09 15:37:24,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 510 transitions. [2020-11-09 15:37:24,530 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 510 transitions. Word has length 11 [2020-11-09 15:37:24,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:24,530 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 510 transitions. [2020-11-09 15:37:24,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:37:24,530 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 510 transitions. [2020-11-09 15:37:24,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:37:24,532 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:24,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:24,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:37:24,532 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:24,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:24,533 INFO L82 PathProgramCache]: Analyzing trace with hash 1593061484, now seen corresponding path program 2 times [2020-11-09 15:37:24,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:24,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229114872] [2020-11-09 15:37:24,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:24,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:24,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:24,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229114872] [2020-11-09 15:37:24,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:24,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-09 15:37:24,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [838168541] [2020-11-09 15:37:24,631 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:24,633 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:24,635 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-11-09 15:37:24,642 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:24,685 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:24,686 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:24,686 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:24,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:24,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:24,687 INFO L87 Difference]: Start difference. First operand 194 states and 510 transitions. Second operand 3 states. [2020-11-09 15:37:24,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:24,695 INFO L93 Difference]: Finished difference Result 192 states and 503 transitions. [2020-11-09 15:37:24,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:24,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-09 15:37:24,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:24,697 INFO L225 Difference]: With dead ends: 192 [2020-11-09 15:37:24,697 INFO L226 Difference]: Without dead ends: 192 [2020-11-09 15:37:24,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:24,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-11-09 15:37:24,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-11-09 15:37:24,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-11-09 15:37:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 503 transitions. [2020-11-09 15:37:24,709 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 503 transitions. Word has length 11 [2020-11-09 15:37:24,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:24,709 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 503 transitions. [2020-11-09 15:37:24,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:24,709 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 503 transitions. [2020-11-09 15:37:24,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:37:24,711 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:24,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:24,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:37:24,712 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:24,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:24,712 INFO L82 PathProgramCache]: Analyzing trace with hash 2140263678, now seen corresponding path program 1 times [2020-11-09 15:37:24,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:24,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006711546] [2020-11-09 15:37:24,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:24,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:24,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006711546] [2020-11-09 15:37:24,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:24,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:37:24,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [296297989] [2020-11-09 15:37:24,775 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:24,778 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:24,781 INFO L252 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-11-09 15:37:24,781 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:24,785 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:24,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-09 15:37:24,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:24,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-09 15:37:24,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:24,787 INFO L87 Difference]: Start difference. First operand 192 states and 503 transitions. Second operand 3 states. [2020-11-09 15:37:24,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:24,798 INFO L93 Difference]: Finished difference Result 248 states and 627 transitions. [2020-11-09 15:37:24,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-09 15:37:24,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-09 15:37:24,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:24,801 INFO L225 Difference]: With dead ends: 248 [2020-11-09 15:37:24,801 INFO L226 Difference]: Without dead ends: 200 [2020-11-09 15:37:24,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-09 15:37:24,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-11-09 15:37:24,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2020-11-09 15:37:24,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-11-09 15:37:24,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 467 transitions. [2020-11-09 15:37:24,811 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 467 transitions. Word has length 12 [2020-11-09 15:37:24,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:24,811 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 467 transitions. [2020-11-09 15:37:24,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-09 15:37:24,812 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 467 transitions. [2020-11-09 15:37:24,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:37:24,814 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:24,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:24,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:37:24,814 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:24,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:24,815 INFO L82 PathProgramCache]: Analyzing trace with hash 2140264484, now seen corresponding path program 1 times [2020-11-09 15:37:24,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:24,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761208637] [2020-11-09 15:37:24,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:24,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:24,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761208637] [2020-11-09 15:37:24,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:24,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:37:24,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1493894443] [2020-11-09 15:37:24,986 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:24,988 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:24,996 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-11-09 15:37:24,997 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:25,034 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:25,063 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:25,113 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:25,141 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:25,171 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:25,197 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:25,269 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:25,298 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [4470#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 15:37:25,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:37:25,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:25,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:37:25,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:37:25,300 INFO L87 Difference]: Start difference. First operand 188 states and 467 transitions. Second operand 5 states. [2020-11-09 15:37:25,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:25,426 INFO L93 Difference]: Finished difference Result 186 states and 435 transitions. [2020-11-09 15:37:25,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:37:25,427 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-09 15:37:25,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:25,428 INFO L225 Difference]: With dead ends: 186 [2020-11-09 15:37:25,429 INFO L226 Difference]: Without dead ends: 122 [2020-11-09 15:37:25,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:37:25,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-11-09 15:37:25,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-11-09 15:37:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-11-09 15:37:25,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 253 transitions. [2020-11-09 15:37:25,437 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 253 transitions. Word has length 12 [2020-11-09 15:37:25,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:25,438 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 253 transitions. [2020-11-09 15:37:25,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:37:25,438 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 253 transitions. [2020-11-09 15:37:25,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-09 15:37:25,442 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:25,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:25,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:37:25,443 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:25,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:25,443 INFO L82 PathProgramCache]: Analyzing trace with hash 2125100997, now seen corresponding path program 1 times [2020-11-09 15:37:25,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:25,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320561624] [2020-11-09 15:37:25,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:25,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:25,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:25,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320561624] [2020-11-09 15:37:25,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:25,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-09 15:37:25,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [73940081] [2020-11-09 15:37:25,566 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:25,568 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:25,575 INFO L252 McrAutomatonBuilder]: Finished intersection with 43 states and 75 transitions. [2020-11-09 15:37:25,576 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:25,600 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-09 15:37:25,705 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4912#(not (= ~__unbuffered_cnt~0 2)), 4913#(not (= ~__unbuffered_cnt~0 1)), 4914#(<= ~__unbuffered_cnt~0 0), 4911#(not (= 3 ~__unbuffered_cnt~0))] [2020-11-09 15:37:25,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-09 15:37:25,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:25,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-09 15:37:25,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-11-09 15:37:25,707 INFO L87 Difference]: Start difference. First operand 122 states and 253 transitions. Second operand 10 states. [2020-11-09 15:37:25,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:25,776 INFO L93 Difference]: Finished difference Result 118 states and 243 transitions. [2020-11-09 15:37:25,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:37:25,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-11-09 15:37:25,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:25,777 INFO L225 Difference]: With dead ends: 118 [2020-11-09 15:37:25,777 INFO L226 Difference]: Without dead ends: 54 [2020-11-09 15:37:25,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-11-09 15:37:25,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-09 15:37:25,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-11-09 15:37:25,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-09 15:37:25,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 97 transitions. [2020-11-09 15:37:25,780 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 97 transitions. Word has length 15 [2020-11-09 15:37:25,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:25,780 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 97 transitions. [2020-11-09 15:37:25,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-09 15:37:25,781 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 97 transitions. [2020-11-09 15:37:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 15:37:25,781 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:25,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:25,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-09 15:37:25,782 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:25,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:25,782 INFO L82 PathProgramCache]: Analyzing trace with hash 2097589764, now seen corresponding path program 1 times [2020-11-09 15:37:25,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:25,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747437329] [2020-11-09 15:37:25,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:25,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:25,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747437329] [2020-11-09 15:37:25,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:25,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:37:25,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [574988598] [2020-11-09 15:37:25,856 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:25,862 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:25,875 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 97 transitions. [2020-11-09 15:37:25,875 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:25,931 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:25,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:37:25,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:25,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:37:25,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:37:25,933 INFO L87 Difference]: Start difference. First operand 54 states and 97 transitions. Second operand 4 states. [2020-11-09 15:37:25,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:25,957 INFO L93 Difference]: Finished difference Result 63 states and 110 transitions. [2020-11-09 15:37:25,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:37:25,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 15:37:25,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:25,958 INFO L225 Difference]: With dead ends: 63 [2020-11-09 15:37:25,958 INFO L226 Difference]: Without dead ends: 35 [2020-11-09 15:37:25,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:37:25,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-09 15:37:25,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-11-09 15:37:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-09 15:37:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-11-09 15:37:25,960 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-11-09 15:37:25,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:25,961 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-11-09 15:37:25,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:37:25,961 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-11-09 15:37:25,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 15:37:25,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:25,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:25,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-09 15:37:25,962 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:25,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:25,963 INFO L82 PathProgramCache]: Analyzing trace with hash -281731452, now seen corresponding path program 2 times [2020-11-09 15:37:25,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:25,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186603831] [2020-11-09 15:37:25,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:25,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:26,025 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186603831] [2020-11-09 15:37:26,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:26,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:37:26,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [7457430] [2020-11-09 15:37:26,026 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:26,030 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:26,041 INFO L252 McrAutomatonBuilder]: Finished intersection with 35 states and 49 transitions. [2020-11-09 15:37:26,042 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:26,055 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:26,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:37:26,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:26,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:37:26,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:37:26,056 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-11-09 15:37:26,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:26,076 INFO L93 Difference]: Finished difference Result 48 states and 77 transitions. [2020-11-09 15:37:26,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:37:26,077 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 15:37:26,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:26,078 INFO L225 Difference]: With dead ends: 48 [2020-11-09 15:37:26,078 INFO L226 Difference]: Without dead ends: 30 [2020-11-09 15:37:26,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:37:26,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-09 15:37:26,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-09 15:37:26,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-09 15:37:26,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-11-09 15:37:26,080 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 44 transitions. Word has length 17 [2020-11-09 15:37:26,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:26,080 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-11-09 15:37:26,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:37:26,081 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 44 transitions. [2020-11-09 15:37:26,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-09 15:37:26,081 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:37:26,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:37:26,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-09 15:37:26,081 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:37:26,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:37:26,082 INFO L82 PathProgramCache]: Analyzing trace with hash -766877882, now seen corresponding path program 3 times [2020-11-09 15:37:26,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:37:26,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682888724] [2020-11-09 15:37:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:37:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:37:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:37:26,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682888724] [2020-11-09 15:37:26,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:37:26,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:37:26,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1058356609] [2020-11-09 15:37:26,120 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:37:26,121 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:37:26,127 INFO L252 McrAutomatonBuilder]: Finished intersection with 38 states and 53 transitions. [2020-11-09 15:37:26,127 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:37:26,145 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:37:26,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:37:26,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:37:26,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:37:26,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:37:26,146 INFO L87 Difference]: Start difference. First operand 30 states and 44 transitions. Second operand 4 states. [2020-11-09 15:37:26,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:37:26,162 INFO L93 Difference]: Finished difference Result 29 states and 43 transitions. [2020-11-09 15:37:26,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-09 15:37:26,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-09 15:37:26,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:37:26,163 INFO L225 Difference]: With dead ends: 29 [2020-11-09 15:37:26,163 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:37:26,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:37:26,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:37:26,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:37:26,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:37:26,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:37:26,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-09 15:37:26,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:37:26,164 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:37:26,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:37:26,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:37:26,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:37:26,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-09 15:37:26,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:37:26 BasicIcfg [2020-11-09 15:37:26,169 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:37:26,170 INFO L168 Benchmark]: Toolchain (without parser) took 8605.27 ms. Allocated memory was 162.5 MB in the beginning and 248.5 MB in the end (delta: 86.0 MB). Free memory was 136.2 MB in the beginning and 132.2 MB in the end (delta: 4.0 MB). Peak memory consumption was 90.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:26,171 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 162.5 MB. Free memory was 135.6 MB in the beginning and 135.5 MB in the end (delta: 97.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:37:26,172 INFO L168 Benchmark]: CACSL2BoogieTranslator took 634.64 ms. Allocated memory is still 162.5 MB. Free memory was 135.5 MB in the beginning and 143.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:26,172 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.84 ms. Allocated memory is still 162.5 MB. Free memory was 142.8 MB in the beginning and 140.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:26,173 INFO L168 Benchmark]: Boogie Preprocessor took 28.17 ms. Allocated memory is still 162.5 MB. Free memory was 140.7 MB in the beginning and 139.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:26,174 INFO L168 Benchmark]: RCFGBuilder took 467.94 ms. Allocated memory is still 162.5 MB. Free memory was 139.6 MB in the beginning and 117.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:26,175 INFO L168 Benchmark]: TraceAbstraction took 7410.44 ms. Allocated memory was 162.5 MB in the beginning and 248.5 MB in the end (delta: 86.0 MB). Free memory was 116.6 MB in the beginning and 132.2 MB in the end (delta: -15.6 MB). Peak memory consumption was 70.4 MB. Max. memory is 8.0 GB. [2020-11-09 15:37:26,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 162.5 MB. Free memory was 135.6 MB in the beginning and 135.5 MB in the end (delta: 97.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 634.64 ms. Allocated memory is still 162.5 MB. Free memory was 135.5 MB in the beginning and 143.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 49.84 ms. Allocated memory is still 162.5 MB. Free memory was 142.8 MB in the beginning and 140.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 28.17 ms. Allocated memory is still 162.5 MB. Free memory was 140.7 MB in the beginning and 139.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 467.94 ms. Allocated memory is still 162.5 MB. Free memory was 139.6 MB in the beginning and 117.1 MB in the end (delta: 22.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7410.44 ms. Allocated memory was 162.5 MB in the beginning and 248.5 MB in the end (delta: 86.0 MB). Free memory was 116.6 MB in the beginning and 132.2 MB in the end (delta: -15.6 MB). Peak memory consumption was 70.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 780 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 4.5s, 85 PlacesBefore, 31 PlacesAfterwards, 78 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 45 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 73 TotalNumberOfCompositions, 2774 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.2s, OverallIterations: 11, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.5s, HoareTripleCheckerStatistics: 223 SDtfs, 144 SDslu, 241 SDs, 0 SdLazy, 129 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 12 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 128 ConstructedInterpolants, 0 QuantifiedInterpolants, 4100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...