/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 10:50:57,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 10:50:57,734 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 10:50:57,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 10:50:57,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 10:50:57,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 10:50:57,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 10:50:57,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 10:50:57,775 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 10:50:57,778 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 10:50:57,780 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 10:50:57,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 10:50:57,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 10:50:57,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 10:50:57,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 10:50:57,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 10:50:57,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 10:50:57,789 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 10:50:57,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 10:50:57,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 10:50:57,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 10:50:57,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 10:50:57,806 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 10:50:57,806 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 10:50:57,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 10:50:57,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 10:50:57,809 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 10:50:57,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 10:50:57,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 10:50:57,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 10:50:57,814 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 10:50:57,815 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 10:50:57,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 10:50:57,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 10:50:57,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 10:50:57,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 10:50:57,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 10:50:57,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 10:50:57,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 10:50:57,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 10:50:57,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 10:50:57,823 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe-McrStrategy.epf [2020-04-18 10:50:57,858 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 10:50:57,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 10:50:57,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 10:50:57,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 10:50:57,863 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 10:50:57,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 10:50:57,866 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 10:50:57,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 10:50:57,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 10:50:57,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 10:50:57,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 10:50:57,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 10:50:57,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 10:50:57,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 10:50:57,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 10:50:57,868 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 10:50:57,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 10:50:57,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 10:50:57,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 10:50:57,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 10:50:57,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 10:50:57,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 10:50:57,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 10:50:57,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 10:50:57,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 10:50:57,870 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 10:50:57,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 10:50:57,870 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 10:50:57,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 10:50:57,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 10:50:58,160 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 10:50:58,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 10:50:58,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 10:50:58,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 10:50:58,184 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 10:50:58,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2020-04-18 10:50:58,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbce73d6f/1f7a46d6343b4a61a5abe8f807d1a736/FLAG84044865f [2020-04-18 10:50:58,773 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 10:50:58,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.opt.i [2020-04-18 10:50:58,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbce73d6f/1f7a46d6343b4a61a5abe8f807d1a736/FLAG84044865f [2020-04-18 10:50:59,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dbce73d6f/1f7a46d6343b4a61a5abe8f807d1a736 [2020-04-18 10:50:59,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 10:50:59,130 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 10:50:59,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 10:50:59,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 10:50:59,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 10:50:59,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:50:59" (1/1) ... [2020-04-18 10:50:59,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc23754 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:50:59, skipping insertion in model container [2020-04-18 10:50:59,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 10:50:59" (1/1) ... [2020-04-18 10:50:59,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 10:50:59,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 10:50:59,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:50:59,672 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 10:50:59,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 10:50:59,800 INFO L208 MainTranslator]: Completed translation [2020-04-18 10:50:59,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:50:59 WrapperNode [2020-04-18 10:50:59,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 10:50:59,802 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 10:50:59,802 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 10:50:59,802 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 10:50:59,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:50:59" (1/1) ... [2020-04-18 10:50:59,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:50:59" (1/1) ... [2020-04-18 10:50:59,854 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 10:50:59,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 10:50:59,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 10:50:59,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 10:50:59,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:50:59" (1/1) ... [2020-04-18 10:50:59,864 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:50:59" (1/1) ... [2020-04-18 10:50:59,866 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:50:59" (1/1) ... [2020-04-18 10:50:59,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:50:59" (1/1) ... [2020-04-18 10:50:59,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:50:59" (1/1) ... [2020-04-18 10:50:59,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:50:59" (1/1) ... [2020-04-18 10:50:59,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:50:59" (1/1) ... [2020-04-18 10:50:59,882 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 10:50:59,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 10:50:59,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 10:50:59,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 10:50:59,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:50:59" (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 [2020-04-18 10:50:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 10:50:59,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 10:50:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 10:50:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 10:50:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 10:50:59,951 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 10:50:59,951 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 10:50:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 10:50:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 10:50:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 10:50:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 10:50:59,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 10:50:59,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 10:50:59,954 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 10:51:00,312 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 10:51:00,313 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 10:51:00,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:51:00 BoogieIcfgContainer [2020-04-18 10:51:00,320 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 10:51:00,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 10:51:00,321 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 10:51:00,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 10:51:00,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 10:50:59" (1/3) ... [2020-04-18 10:51:00,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460930d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:51:00, skipping insertion in model container [2020-04-18 10:51:00,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 10:50:59" (2/3) ... [2020-04-18 10:51:00,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@460930d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 10:51:00, skipping insertion in model container [2020-04-18 10:51:00,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 10:51:00" (3/3) ... [2020-04-18 10:51:00,328 INFO L109 eAbstractionObserver]: Analyzing ICFG safe011_tso.opt.i [2020-04-18 10:51:00,338 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 10:51:00,338 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 10:51:00,345 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 10:51:00,346 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 10:51:00,381 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,382 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,382 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,383 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,383 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,383 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,384 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,384 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,384 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,385 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,385 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,385 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,386 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,386 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,386 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,386 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,387 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,389 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,394 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,395 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,395 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,395 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,412 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,413 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,413 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,413 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,416 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,416 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,416 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,416 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 10:51:00,434 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 10:51:00,450 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 10:51:00,450 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 10:51:00,451 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 10:51:00,451 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 10:51:00,451 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 10:51:00,451 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 10:51:00,451 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 10:51:00,451 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 10:51:00,467 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-04-18 10:51:00,469 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 10:51:00,512 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 10:51:00,513 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:51:00,518 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:51:00,521 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-04-18 10:51:00,541 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-04-18 10:51:00,541 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 10:51:00,542 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-18 10:51:00,544 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-18 10:51:00,545 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-18 10:51:02,471 WARN L192 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 47 [2020-04-18 10:51:02,681 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2287 [2020-04-18 10:51:02,682 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-04-18 10:51:02,689 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-04-18 10:51:02,729 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-18 10:51:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-18 10:51:02,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:51:02,742 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:51:02,743 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:51:02,743 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:51:02,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:02,748 INFO L82 PathProgramCache]: Analyzing trace with hash 573122436, now seen corresponding path program 1 times [2020-04-18 10:51:02,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:51:02,754 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [251588457] [2020-04-18 10:51:02,768 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:02,780 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:51:02,783 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-04-18 10:51:02,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 10:51:02,784 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:51:02,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:02,786 INFO L82 PathProgramCache]: Analyzing trace with hash 573122436, now seen corresponding path program 2 times [2020-04-18 10:51:02,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:02,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076539806] [2020-04-18 10:51:02,789 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:02,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076539806] [2020-04-18 10:51:02,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:02,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:51:02,995 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:02,997 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:03,003 INFO L259 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-04-18 10:51:03,003 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:03,013 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:51:03,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:51:03,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:51:03,022 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2020-04-18 10:51:03,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:03,028 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2020-04-18 10:51:03,029 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-04-18 10:51:03,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:51:03,030 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [251588457] [2020-04-18 10:51:03,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:51:03,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:51:03,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [251588457] [2020-04-18 10:51:03,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:51:03,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:51:03,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:51:03,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:51:03,042 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-18 10:51:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:03,101 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-04-18 10:51:03,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:51:03,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 10:51:03,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:51:03,142 INFO L225 Difference]: With dead ends: 290 [2020-04-18 10:51:03,148 INFO L226 Difference]: Without dead ends: 226 [2020-04-18 10:51:03,152 INFO L678 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 [2020-04-18 10:51:03,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-04-18 10:51:03,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-04-18 10:51:03,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-04-18 10:51:03,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-04-18 10:51:03,255 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-04-18 10:51:03,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:51:03,256 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-04-18 10:51:03,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:51:03,257 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-04-18 10:51:03,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:51:03,259 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:51:03,259 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:51:03,259 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:51:03,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:03,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1327041946, now seen corresponding path program 1 times [2020-04-18 10:51:03,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:51:03,260 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [887298584] [2020-04-18 10:51:03,261 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:03,262 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 21 transitions. [2020-04-18 10:51:03,262 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-04-18 10:51:03,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 10:51:03,263 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:51:03,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:03,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1327041946, now seen corresponding path program 2 times [2020-04-18 10:51:03,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:03,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521060993] [2020-04-18 10:51:03,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:03,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:03,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521060993] [2020-04-18 10:51:03,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:03,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 10:51:03,378 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:03,381 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:03,384 INFO L259 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-04-18 10:51:03,385 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:03,397 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:51:03,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:51:03,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:51:03,399 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 3 states. [2020-04-18 10:51:03,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:03,399 INFO L93 Difference]: Finished difference Result 16 states and 21 transitions. [2020-04-18 10:51:03,400 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 21 transitions. [2020-04-18 10:51:03,400 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:51:03,400 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [887298584] [2020-04-18 10:51:03,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:51:03,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [1] total 1 [2020-04-18 10:51:03,401 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [887298584] [2020-04-18 10:51:03,402 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 10:51:03,402 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:51:03,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:51:03,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:51:03,403 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-04-18 10:51:03,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:03,410 INFO L93 Difference]: Finished difference Result 214 states and 585 transitions. [2020-04-18 10:51:03,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 10:51:03,411 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 10:51:03,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:51:03,413 INFO L225 Difference]: With dead ends: 214 [2020-04-18 10:51:03,413 INFO L226 Difference]: Without dead ends: 214 [2020-04-18 10:51:03,415 INFO L678 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 [2020-04-18 10:51:03,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-04-18 10:51:03,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 214. [2020-04-18 10:51:03,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-04-18 10:51:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 585 transitions. [2020-04-18 10:51:03,430 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 585 transitions. Word has length 9 [2020-04-18 10:51:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:51:03,431 INFO L479 AbstractCegarLoop]: Abstraction has 214 states and 585 transitions. [2020-04-18 10:51:03,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 10:51:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 585 transitions. [2020-04-18 10:51:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:51:03,432 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:51:03,433 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:51:03,433 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:51:03,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:03,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1811373379, now seen corresponding path program 1 times [2020-04-18 10:51:03,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:51:03,434 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1976330271] [2020-04-18 10:51:03,434 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:03,435 INFO L259 McrAutomatonBuilder]: Finished intersection with 22 states and 34 transitions. [2020-04-18 10:51:03,436 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-04-18 10:51:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:51:03,436 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:51:03,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:03,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1811372449, now seen corresponding path program 2 times [2020-04-18 10:51:03,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:03,437 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218460085] [2020-04-18 10:51:03,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:03,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:03,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218460085] [2020-04-18 10:51:03,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:03,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:51:03,546 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:03,547 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:03,549 INFO L259 McrAutomatonBuilder]: Finished intersection with 16 states and 20 transitions. [2020-04-18 10:51:03,549 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:03,553 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:51:03,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:51:03,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:51:03,554 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-04-18 10:51:03,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:03,559 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2020-04-18 10:51:03,560 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2020-04-18 10:51:03,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 10:51:03,560 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:51:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:03,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1811373379, now seen corresponding path program 3 times [2020-04-18 10:51:03,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:03,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367694455] [2020-04-18 10:51:03,561 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:03,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:03,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367694455] [2020-04-18 10:51:03,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:03,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:51:03,615 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:03,617 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:03,619 INFO L259 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-04-18 10:51:03,619 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:03,636 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:51:03,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:51:03,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:51:03,638 INFO L87 Difference]: Start difference. First operand 24 states and 35 transitions. Second operand 4 states. [2020-04-18 10:51:03,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:03,661 INFO L93 Difference]: Finished difference Result 24 states and 35 transitions. [2020-04-18 10:51:03,661 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 35 transitions. [2020-04-18 10:51:03,661 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:51:03,662 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1976330271] [2020-04-18 10:51:03,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:51:03,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:51:03,662 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1976330271] [2020-04-18 10:51:03,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:51:03,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:51:03,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:51:03,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:51:03,664 INFO L87 Difference]: Start difference. First operand 214 states and 585 transitions. Second operand 5 states. [2020-04-18 10:51:03,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:03,695 INFO L93 Difference]: Finished difference Result 240 states and 627 transitions. [2020-04-18 10:51:03,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 10:51:03,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-04-18 10:51:03,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:51:03,712 INFO L225 Difference]: With dead ends: 240 [2020-04-18 10:51:03,712 INFO L226 Difference]: Without dead ends: 144 [2020-04-18 10:51:03,713 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-04-18 10:51:03,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-04-18 10:51:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-04-18 10:51:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-04-18 10:51:03,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 355 transitions. [2020-04-18 10:51:03,725 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 355 transitions. Word has length 10 [2020-04-18 10:51:03,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:51:03,725 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 355 transitions. [2020-04-18 10:51:03,725 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:51:03,725 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 355 transitions. [2020-04-18 10:51:03,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:51:03,726 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:51:03,727 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:51:03,727 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:51:03,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:03,727 INFO L82 PathProgramCache]: Analyzing trace with hash 389651423, now seen corresponding path program 1 times [2020-04-18 10:51:03,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:51:03,728 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [24779504] [2020-04-18 10:51:03,729 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:03,730 INFO L259 McrAutomatonBuilder]: Finished intersection with 54 states and 118 transitions. [2020-04-18 10:51:03,731 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-04-18 10:51:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:51:03,732 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:51:03,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:03,732 INFO L82 PathProgramCache]: Analyzing trace with hash 389652353, now seen corresponding path program 2 times [2020-04-18 10:51:03,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:03,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962100902] [2020-04-18 10:51:03,733 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:03,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962100902] [2020-04-18 10:51:03,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:03,775 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:51:03,776 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:03,778 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:03,784 INFO L259 McrAutomatonBuilder]: Finished intersection with 33 states and 58 transitions. [2020-04-18 10:51:03,784 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:03,788 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:51:03,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:51:03,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:51:03,789 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 3 states. [2020-04-18 10:51:03,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:03,793 INFO L93 Difference]: Finished difference Result 60 states and 125 transitions. [2020-04-18 10:51:03,793 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 125 transitions. [2020-04-18 10:51:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 10:51:03,794 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:51:03,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:03,794 INFO L82 PathProgramCache]: Analyzing trace with hash 389651423, now seen corresponding path program 3 times [2020-04-18 10:51:03,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:03,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181110647] [2020-04-18 10:51:03,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:03,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181110647] [2020-04-18 10:51:03,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:03,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:51:03,920 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:03,923 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:03,931 INFO L259 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-04-18 10:51:03,932 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:03,948 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:51:03,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:51:03,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:51:03,949 INFO L87 Difference]: Start difference. First operand 60 states and 125 transitions. Second operand 4 states. [2020-04-18 10:51:03,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:03,961 INFO L93 Difference]: Finished difference Result 60 states and 125 transitions. [2020-04-18 10:51:03,961 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 125 transitions. [2020-04-18 10:51:03,964 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:51:03,967 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [24779504] [2020-04-18 10:51:03,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:51:03,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:51:03,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [24779504] [2020-04-18 10:51:03,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 10:51:03,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:51:03,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 10:51:03,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-04-18 10:51:03,969 INFO L87 Difference]: Start difference. First operand 144 states and 355 transitions. Second operand 5 states. [2020-04-18 10:51:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:04,063 INFO L93 Difference]: Finished difference Result 164 states and 374 transitions. [2020-04-18 10:51:04,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 10:51:04,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 10:51:04,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:51:04,065 INFO L225 Difference]: With dead ends: 164 [2020-04-18 10:51:04,066 INFO L226 Difference]: Without dead ends: 124 [2020-04-18 10:51:04,066 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:51:04,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-04-18 10:51:04,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-04-18 10:51:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-04-18 10:51:04,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 281 transitions. [2020-04-18 10:51:04,083 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 281 transitions. Word has length 12 [2020-04-18 10:51:04,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:51:04,084 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 281 transitions. [2020-04-18 10:51:04,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 10:51:04,084 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 281 transitions. [2020-04-18 10:51:04,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:51:04,085 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:51:04,085 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:51:04,085 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:51:04,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:04,085 INFO L82 PathProgramCache]: Analyzing trace with hash -806373780, now seen corresponding path program 1 times [2020-04-18 10:51:04,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:51:04,088 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1163911149] [2020-04-18 10:51:04,089 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:04,093 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 160 transitions. [2020-04-18 10:51:04,098 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-04-18 10:51:04,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:51:04,099 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:51:04,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:04,099 INFO L82 PathProgramCache]: Analyzing trace with hash -805678740, now seen corresponding path program 2 times [2020-04-18 10:51:04,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:04,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699241305] [2020-04-18 10:51:04,100 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:04,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:04,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:04,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699241305] [2020-04-18 10:51:04,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:04,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:51:04,169 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:04,171 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:04,176 INFO L259 McrAutomatonBuilder]: Finished intersection with 37 states and 65 transitions. [2020-04-18 10:51:04,176 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:04,187 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:51:04,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:51:04,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:51:04,189 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 3 states. [2020-04-18 10:51:04,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:04,198 INFO L93 Difference]: Finished difference Result 78 states and 170 transitions. [2020-04-18 10:51:04,198 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 170 transitions. [2020-04-18 10:51:04,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:51:04,199 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:51:04,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:04,199 INFO L82 PathProgramCache]: Analyzing trace with hash -805707570, now seen corresponding path program 3 times [2020-04-18 10:51:04,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:04,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333921358] [2020-04-18 10:51:04,200 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:04,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:04,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:04,297 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333921358] [2020-04-18 10:51:04,297 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:04,297 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:51:04,298 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:04,299 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:04,304 INFO L259 McrAutomatonBuilder]: Finished intersection with 40 states and 73 transitions. [2020-04-18 10:51:04,304 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:04,316 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:51:04,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:51:04,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:51:04,317 INFO L87 Difference]: Start difference. First operand 78 states and 170 transitions. Second operand 4 states. [2020-04-18 10:51:04,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:04,335 INFO L93 Difference]: Finished difference Result 88 states and 183 transitions. [2020-04-18 10:51:04,335 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 183 transitions. [2020-04-18 10:51:04,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 10:51:04,335 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:51:04,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:04,336 INFO L82 PathProgramCache]: Analyzing trace with hash -806373780, now seen corresponding path program 4 times [2020-04-18 10:51:04,336 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:04,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37393777] [2020-04-18 10:51:04,337 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:04,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:04,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:04,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37393777] [2020-04-18 10:51:04,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:04,401 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:51:04,402 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:04,403 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:04,407 INFO L259 McrAutomatonBuilder]: Finished intersection with 39 states and 71 transitions. [2020-04-18 10:51:04,407 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:04,460 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 10:51:04,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:51:04,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:51:04,460 INFO L87 Difference]: Start difference. First operand 88 states and 183 transitions. Second operand 6 states. [2020-04-18 10:51:04,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:04,489 INFO L93 Difference]: Finished difference Result 88 states and 183 transitions. [2020-04-18 10:51:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 183 transitions. [2020-04-18 10:51:04,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:51:04,491 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1163911149] [2020-04-18 10:51:04,492 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:51:04,492 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3] total 3 [2020-04-18 10:51:04,492 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1163911149] [2020-04-18 10:51:04,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 10:51:04,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:51:04,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 10:51:04,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-04-18 10:51:04,493 INFO L87 Difference]: Start difference. First operand 124 states and 281 transitions. Second operand 7 states. [2020-04-18 10:51:04,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:04,594 INFO L93 Difference]: Finished difference Result 122 states and 258 transitions. [2020-04-18 10:51:04,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 10:51:04,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-04-18 10:51:04,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:51:04,596 INFO L225 Difference]: With dead ends: 122 [2020-04-18 10:51:04,596 INFO L226 Difference]: Without dead ends: 97 [2020-04-18 10:51:04,597 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-04-18 10:51:04,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-04-18 10:51:04,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-04-18 10:51:04,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-04-18 10:51:04,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 202 transitions. [2020-04-18 10:51:04,608 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 202 transitions. Word has length 13 [2020-04-18 10:51:04,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:51:04,609 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 202 transitions. [2020-04-18 10:51:04,609 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 10:51:04,609 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 202 transitions. [2020-04-18 10:51:04,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:51:04,610 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:51:04,610 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:51:04,611 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:51:04,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:04,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1341104517, now seen corresponding path program 1 times [2020-04-18 10:51:04,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:51:04,612 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [806257145] [2020-04-18 10:51:04,613 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:04,614 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 122 transitions. [2020-04-18 10:51:04,615 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-04-18 10:51:04,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:51:04,616 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:51:04,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:04,616 INFO L82 PathProgramCache]: Analyzing trace with hash -671662917, now seen corresponding path program 2 times [2020-04-18 10:51:04,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:04,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089081173] [2020-04-18 10:51:04,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:04,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:04,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089081173] [2020-04-18 10:51:04,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:04,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:51:04,681 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:04,684 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:04,686 INFO L259 McrAutomatonBuilder]: Finished intersection with 25 states and 34 transitions. [2020-04-18 10:51:04,687 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:04,697 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:51:04,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:51:04,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:51:04,698 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 3 states. [2020-04-18 10:51:04,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:04,703 INFO L93 Difference]: Finished difference Result 68 states and 132 transitions. [2020-04-18 10:51:04,703 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 132 transitions. [2020-04-18 10:51:04,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 10:51:04,703 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:51:04,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:04,704 INFO L82 PathProgramCache]: Analyzing trace with hash -699740247, now seen corresponding path program 3 times [2020-04-18 10:51:04,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:04,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862122663] [2020-04-18 10:51:04,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:04,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:04,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:04,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862122663] [2020-04-18 10:51:04,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:04,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:51:04,727 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:04,728 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:04,730 INFO L259 McrAutomatonBuilder]: Finished intersection with 27 states and 38 transitions. [2020-04-18 10:51:04,730 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:04,737 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 4 times. [2020-04-18 10:51:04,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:51:04,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:51:04,737 INFO L87 Difference]: Start difference. First operand 68 states and 132 transitions. Second operand 3 states. [2020-04-18 10:51:04,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:04,744 INFO L93 Difference]: Finished difference Result 68 states and 132 transitions. [2020-04-18 10:51:04,744 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 132 transitions. [2020-04-18 10:51:04,744 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:51:04,745 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [806257145] [2020-04-18 10:51:04,745 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:51:04,745 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:51:04,745 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [806257145] [2020-04-18 10:51:04,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 10:51:04,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:51:04,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:51:04,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:51:04,746 INFO L87 Difference]: Start difference. First operand 97 states and 202 transitions. Second operand 4 states. [2020-04-18 10:51:04,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:04,756 INFO L93 Difference]: Finished difference Result 115 states and 230 transitions. [2020-04-18 10:51:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 10:51:04,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 10:51:04,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:51:04,758 INFO L225 Difference]: With dead ends: 115 [2020-04-18 10:51:04,758 INFO L226 Difference]: Without dead ends: 98 [2020-04-18 10:51:04,758 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 10:51:04,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-04-18 10:51:04,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-04-18 10:51:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-04-18 10:51:04,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 193 transitions. [2020-04-18 10:51:04,763 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 193 transitions. Word has length 14 [2020-04-18 10:51:04,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:51:04,763 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 193 transitions. [2020-04-18 10:51:04,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 10:51:04,763 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 193 transitions. [2020-04-18 10:51:04,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:51:04,764 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:51:04,764 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:51:04,764 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:51:04,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:04,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1362110025, now seen corresponding path program 1 times [2020-04-18 10:51:04,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:51:04,765 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1121130054] [2020-04-18 10:51:04,766 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:04,768 INFO L259 McrAutomatonBuilder]: Finished intersection with 138 states and 352 transitions. [2020-04-18 10:51:04,769 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states. [2020-04-18 10:51:04,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:51:04,770 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:51:04,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:04,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1340562585, now seen corresponding path program 2 times [2020-04-18 10:51:04,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:04,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269916168] [2020-04-18 10:51:04,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:04,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269916168] [2020-04-18 10:51:04,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:04,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:51:04,810 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:04,811 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:04,816 INFO L259 McrAutomatonBuilder]: Finished intersection with 60 states and 109 transitions. [2020-04-18 10:51:04,816 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:04,824 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:51:04,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:51:04,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:51:04,824 INFO L87 Difference]: Start difference. First operand 138 states. Second operand 3 states. [2020-04-18 10:51:04,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:04,828 INFO L93 Difference]: Finished difference Result 154 states and 376 transitions. [2020-04-18 10:51:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-04-18 10:51:04,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:51:04,829 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:51:04,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:04,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1341456315, now seen corresponding path program 3 times [2020-04-18 10:51:04,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:04,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329581530] [2020-04-18 10:51:04,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:04,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:04,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329581530] [2020-04-18 10:51:04,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:04,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:51:04,888 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:04,889 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:04,895 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 114 transitions. [2020-04-18 10:51:04,895 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:04,907 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:51:04,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:51:04,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:51:04,908 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 4 states. [2020-04-18 10:51:04,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:04,934 INFO L93 Difference]: Finished difference Result 189 states and 434 transitions. [2020-04-18 10:51:04,934 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 434 transitions. [2020-04-18 10:51:04,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:51:04,935 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:51:04,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:04,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1362108825, now seen corresponding path program 4 times [2020-04-18 10:51:04,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:04,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452670240] [2020-04-18 10:51:04,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:04,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:04,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452670240] [2020-04-18 10:51:04,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:04,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:51:04,992 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:04,993 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:04,998 INFO L259 McrAutomatonBuilder]: Finished intersection with 61 states and 108 transitions. [2020-04-18 10:51:04,999 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:05,034 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 10:51:05,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:51:05,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:51:05,034 INFO L87 Difference]: Start difference. First operand 189 states and 434 transitions. Second operand 6 states. [2020-04-18 10:51:05,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:05,097 INFO L93 Difference]: Finished difference Result 194 states and 438 transitions. [2020-04-18 10:51:05,097 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 438 transitions. [2020-04-18 10:51:05,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-18 10:51:05,098 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:51:05,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:05,098 INFO L82 PathProgramCache]: Analyzing trace with hash -1362110025, now seen corresponding path program 5 times [2020-04-18 10:51:05,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:05,099 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845206992] [2020-04-18 10:51:05,099 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:05,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:05,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:05,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845206992] [2020-04-18 10:51:05,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:05,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:51:05,191 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:05,193 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:05,198 INFO L259 McrAutomatonBuilder]: Finished intersection with 57 states and 100 transitions. [2020-04-18 10:51:05,199 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:05,264 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 10:51:05,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:51:05,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 10:51:05,265 INFO L87 Difference]: Start difference. First operand 194 states and 438 transitions. Second operand 8 states. [2020-04-18 10:51:05,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:05,317 INFO L93 Difference]: Finished difference Result 194 states and 438 transitions. [2020-04-18 10:51:05,317 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 438 transitions. [2020-04-18 10:51:05,318 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:51:05,318 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1121130054] [2020-04-18 10:51:05,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:51:05,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-04-18 10:51:05,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1121130054] [2020-04-18 10:51:05,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 10:51:05,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:51:05,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 10:51:05,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:51:05,320 INFO L87 Difference]: Start difference. First operand 96 states and 193 transitions. Second operand 9 states. [2020-04-18 10:51:05,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:05,417 INFO L93 Difference]: Finished difference Result 92 states and 183 transitions. [2020-04-18 10:51:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 10:51:05,418 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-04-18 10:51:05,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:51:05,419 INFO L225 Difference]: With dead ends: 92 [2020-04-18 10:51:05,419 INFO L226 Difference]: Without dead ends: 36 [2020-04-18 10:51:05,419 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-04-18 10:51:05,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-18 10:51:05,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-18 10:51:05,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-18 10:51:05,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-18 10:51:05,421 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-18 10:51:05,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:51:05,422 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-18 10:51:05,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 10:51:05,422 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-18 10:51:05,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:51:05,423 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 10:51:05,423 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 10:51:05,423 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 10:51:05,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:05,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1202444330, now seen corresponding path program 1 times [2020-04-18 10:51:05,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 10:51:05,424 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1471844637] [2020-04-18 10:51:05,425 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:05,430 INFO L259 McrAutomatonBuilder]: Finished intersection with 234 states and 656 transitions. [2020-04-18 10:51:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states. [2020-04-18 10:51:05,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:51:05,434 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 10:51:05,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:05,434 INFO L82 PathProgramCache]: Analyzing trace with hash 209503778, now seen corresponding path program 2 times [2020-04-18 10:51:05,434 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:05,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462761001] [2020-04-18 10:51:05,435 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:05,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462761001] [2020-04-18 10:51:05,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:05,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:51:05,465 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:05,467 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:05,473 INFO L259 McrAutomatonBuilder]: Finished intersection with 64 states and 116 transitions. [2020-04-18 10:51:05,474 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:05,478 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 10:51:05,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:51:05,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 10:51:05,480 INFO L87 Difference]: Start difference. First operand 234 states. Second operand 3 states. [2020-04-18 10:51:05,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:05,489 INFO L93 Difference]: Finished difference Result 282 states and 760 transitions. [2020-04-18 10:51:05,489 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 760 transitions. [2020-04-18 10:51:05,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:51:05,490 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 10:51:05,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:05,491 INFO L82 PathProgramCache]: Analyzing trace with hash -649370752, now seen corresponding path program 3 times [2020-04-18 10:51:05,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:05,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392221705] [2020-04-18 10:51:05,493 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:05,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392221705] [2020-04-18 10:51:05,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:05,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:51:05,583 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:05,584 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:05,591 INFO L259 McrAutomatonBuilder]: Finished intersection with 75 states and 137 transitions. [2020-04-18 10:51:05,592 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:05,604 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 5 times. [2020-04-18 10:51:05,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:51:05,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-04-18 10:51:05,605 INFO L87 Difference]: Start difference. First operand 282 states and 760 transitions. Second operand 4 states. [2020-04-18 10:51:05,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:05,632 INFO L93 Difference]: Finished difference Result 377 states and 955 transitions. [2020-04-18 10:51:05,632 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 955 transitions. [2020-04-18 10:51:05,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:51:05,633 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 10:51:05,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:05,634 INFO L82 PathProgramCache]: Analyzing trace with hash 978403618, now seen corresponding path program 4 times [2020-04-18 10:51:05,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:05,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459516387] [2020-04-18 10:51:05,634 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:05,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459516387] [2020-04-18 10:51:05,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:05,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 10:51:05,689 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:05,691 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:05,698 INFO L259 McrAutomatonBuilder]: Finished intersection with 71 states and 125 transitions. [2020-04-18 10:51:05,698 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:05,740 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 10:51:05,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 10:51:05,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-04-18 10:51:05,741 INFO L87 Difference]: Start difference. First operand 377 states and 955 transitions. Second operand 6 states. [2020-04-18 10:51:05,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:05,822 INFO L93 Difference]: Finished difference Result 400 states and 985 transitions. [2020-04-18 10:51:05,822 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 985 transitions. [2020-04-18 10:51:05,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:51:05,824 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 10:51:05,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:05,824 INFO L82 PathProgramCache]: Analyzing trace with hash 931650658, now seen corresponding path program 5 times [2020-04-18 10:51:05,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:05,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063894292] [2020-04-18 10:51:05,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:05,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:05,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063894292] [2020-04-18 10:51:05,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:05,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 10:51:05,884 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:05,885 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:05,891 INFO L259 McrAutomatonBuilder]: Finished intersection with 67 states and 112 transitions. [2020-04-18 10:51:05,891 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:05,902 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 10:51:05,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:51:05,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-04-18 10:51:05,903 INFO L87 Difference]: Start difference. First operand 400 states and 985 transitions. Second operand 3 states. [2020-04-18 10:51:05,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:05,911 INFO L93 Difference]: Finished difference Result 600 states and 1401 transitions. [2020-04-18 10:51:05,912 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 1401 transitions. [2020-04-18 10:51:05,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:51:05,913 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 10:51:05,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:05,914 INFO L82 PathProgramCache]: Analyzing trace with hash 977296348, now seen corresponding path program 6 times [2020-04-18 10:51:05,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:05,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802967157] [2020-04-18 10:51:05,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:05,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:05,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802967157] [2020-04-18 10:51:05,975 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:05,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-04-18 10:51:05,975 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:05,976 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:05,982 INFO L259 McrAutomatonBuilder]: Finished intersection with 63 states and 108 transitions. [2020-04-18 10:51:05,982 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:06,048 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 10:51:06,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 10:51:06,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-04-18 10:51:06,049 INFO L87 Difference]: Start difference. First operand 600 states and 1401 transitions. Second operand 8 states. [2020-04-18 10:51:06,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:06,171 INFO L93 Difference]: Finished difference Result 604 states and 1403 transitions. [2020-04-18 10:51:06,171 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1403 transitions. [2020-04-18 10:51:06,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:51:06,173 INFO L105 Mcr]: ---- MCR iteration 5 ---- [2020-04-18 10:51:06,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:06,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1202444330, now seen corresponding path program 7 times [2020-04-18 10:51:06,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:06,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29066136] [2020-04-18 10:51:06,174 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:06,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29066136] [2020-04-18 10:51:06,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:06,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:51:06,198 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:06,199 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:06,204 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 114 transitions. [2020-04-18 10:51:06,205 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:06,220 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 1 times. [2020-04-18 10:51:06,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 10:51:06,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-04-18 10:51:06,221 INFO L87 Difference]: Start difference. First operand 604 states and 1403 transitions. Second operand 3 states. [2020-04-18 10:51:06,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:06,231 INFO L93 Difference]: Finished difference Result 1001 states and 2159 transitions. [2020-04-18 10:51:06,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 2159 transitions. [2020-04-18 10:51:06,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-18 10:51:06,234 INFO L105 Mcr]: ---- MCR iteration 6 ---- [2020-04-18 10:51:06,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 10:51:06,234 INFO L82 PathProgramCache]: Analyzing trace with hash -1406991784, now seen corresponding path program 8 times [2020-04-18 10:51:06,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 10:51:06,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395963149] [2020-04-18 10:51:06,235 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 10:51:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 10:51:06,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 10:51:06,266 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395963149] [2020-04-18 10:51:06,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 10:51:06,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 10:51:06,267 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 10:51:06,268 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 10:51:06,274 INFO L259 McrAutomatonBuilder]: Finished intersection with 59 states and 97 transitions. [2020-04-18 10:51:06,274 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 10:51:06,297 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 10:51:06,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 10:51:06,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-04-18 10:51:06,298 INFO L87 Difference]: Start difference. First operand 1001 states and 2159 transitions. Second operand 4 states. [2020-04-18 10:51:06,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:06,320 INFO L93 Difference]: Finished difference Result 1355 states and 2840 transitions. [2020-04-18 10:51:06,320 INFO L276 IsEmpty]: Start isEmpty. Operand 1355 states and 2840 transitions. [2020-04-18 10:51:06,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:51:06,324 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1471844637] [2020-04-18 10:51:06,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 10:51:06,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2] total 2 [2020-04-18 10:51:06,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1471844637] [2020-04-18 10:51:06,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 10:51:06,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 10:51:06,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 10:51:06,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2020-04-18 10:51:06,326 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 13 states. [2020-04-18 10:51:06,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 10:51:06,515 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-18 10:51:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-04-18 10:51:06,516 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2020-04-18 10:51:06,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 10:51:06,516 INFO L225 Difference]: With dead ends: 35 [2020-04-18 10:51:06,516 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 10:51:06,517 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 128 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=513, Unknown=0, NotChecked=0, Total=650 [2020-04-18 10:51:06,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 10:51:06,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 10:51:06,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 10:51:06,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 10:51:06,518 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-18 10:51:06,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 10:51:06,518 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 10:51:06,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 10:51:06,518 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 10:51:06,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 10:51:06,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 10:51:06 BasicIcfg [2020-04-18 10:51:06,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 10:51:06,524 INFO L168 Benchmark]: Toolchain (without parser) took 7409.53 ms. Allocated memory was 137.4 MB in the beginning and 286.8 MB in the end (delta: 149.4 MB). Free memory was 100.7 MB in the beginning and 142.9 MB in the end (delta: -42.1 MB). Peak memory consumption was 107.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:51:06,525 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 10:51:06,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 670.24 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 98.8 MB in the beginning and 158.8 MB in the end (delta: -60.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. [2020-04-18 10:51:06,526 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.12 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 156.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 10:51:06,526 INFO L168 Benchmark]: Boogie Preprocessor took 27.50 ms. Allocated memory is still 202.4 MB. Free memory was 156.7 MB in the beginning and 155.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 10:51:06,527 INFO L168 Benchmark]: RCFGBuilder took 438.26 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 133.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-18 10:51:06,528 INFO L168 Benchmark]: TraceAbstraction took 6201.09 ms. Allocated memory was 202.4 MB in the beginning and 286.8 MB in the end (delta: 84.4 MB). Free memory was 133.1 MB in the beginning and 142.9 MB in the end (delta: -9.7 MB). Peak memory consumption was 74.7 MB. Max. memory is 7.1 GB. [2020-04-18 10:51:06,530 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 137.4 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 670.24 ms. Allocated memory was 137.4 MB in the beginning and 202.4 MB in the end (delta: 65.0 MB). Free memory was 98.8 MB in the beginning and 158.8 MB in the end (delta: -60.0 MB). Peak memory consumption was 25.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 52.12 ms. Allocated memory is still 202.4 MB. Free memory was 158.8 MB in the beginning and 156.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.50 ms. Allocated memory is still 202.4 MB. Free memory was 156.7 MB in the beginning and 155.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 438.26 ms. Allocated memory is still 202.4 MB. Free memory was 155.3 MB in the beginning and 133.1 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6201.09 ms. Allocated memory was 202.4 MB in the beginning and 286.8 MB in the end (delta: 84.4 MB). Free memory was 133.1 MB in the beginning and 142.9 MB in the end (delta: -9.7 MB). Peak memory consumption was 74.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.2s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 657 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 15 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2287 CheckedPairsTotal, 56 TotalNumberOfCompositions - PositiveResult [Line: 7]: 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 139 SDtfs, 207 SDslu, 264 SDs, 0 SdLazy, 206 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 399 GetRequests, 327 SyntacticMatches, 7 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.6s 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, 8 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...