/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-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:51:11,798 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:51:11,800 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:51:11,812 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:51:11,813 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:51:11,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:51:11,815 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:51:11,817 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:51:11,819 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:51:11,819 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:51:11,820 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:51:11,821 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:51:11,822 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:51:11,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:51:11,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:51:11,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:51:11,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:51:11,826 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:51:11,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:51:11,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:51:11,831 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:51:11,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:51:11,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:51:11,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:51:11,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:51:11,837 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:51:11,837 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:51:11,839 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:51:11,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:51:11,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:51:11,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:51:11,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:51:11,843 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:51:11,844 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:51:11,846 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:51:11,846 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:51:11,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:51:11,848 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:51:11,848 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:51:11,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:51:11,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:51:11,853 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-NoLbe-McrStrategy.epf [2020-04-18 19:51:11,873 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:51:11,873 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:51:11,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:51:11,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:51:11,875 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:51:11,875 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:51:11,875 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:51:11,875 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:51:11,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:51:11,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:51:11,877 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:51:11,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:51:11,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:51:11,878 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:51:11,878 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:51:11,878 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:51:11,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:51:11,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:51:11,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:51:11,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:51:11,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:51:11,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:51:11,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:51:11,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:51:11,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:51:11,880 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:51:11,880 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:51:11,881 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:51:11,881 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:51:11,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:51:11,882 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:51:12,200 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:51:12,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:51:12,226 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:51:12,227 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:51:12,228 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:51:12,229 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-04-18 19:51:12,315 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66bdbebd5/179b0c07e72e4533bd764361e2131a72/FLAG9b6dac218 [2020-04-18 19:51:12,874 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:51:12,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe026_tso.opt.i [2020-04-18 19:51:12,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66bdbebd5/179b0c07e72e4533bd764361e2131a72/FLAG9b6dac218 [2020-04-18 19:51:13,152 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/66bdbebd5/179b0c07e72e4533bd764361e2131a72 [2020-04-18 19:51:13,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:51:13,183 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:51:13,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:51:13,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:51:13,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:51:13,189 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:51:13" (1/1) ... [2020-04-18 19:51:13,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2041bb82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:13, skipping insertion in model container [2020-04-18 19:51:13,192 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:51:13" (1/1) ... [2020-04-18 19:51:13,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:51:13,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:51:13,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:51:13,782 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:51:13,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:51:13,926 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:51:13,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:13 WrapperNode [2020-04-18 19:51:13,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:51:13,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:51:13,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:51:13,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:51:13,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:13" (1/1) ... [2020-04-18 19:51:13,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:13" (1/1) ... [2020-04-18 19:51:13,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:51:13,990 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:51:13,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:51:13,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:51:14,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:13" (1/1) ... [2020-04-18 19:51:14,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:13" (1/1) ... [2020-04-18 19:51:14,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:13" (1/1) ... [2020-04-18 19:51:14,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:13" (1/1) ... [2020-04-18 19:51:14,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:13" (1/1) ... [2020-04-18 19:51:14,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:13" (1/1) ... [2020-04-18 19:51:14,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:13" (1/1) ... [2020-04-18 19:51:14,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:51:14,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:51:14,018 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:51:14,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:51:14,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:13" (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 19:51:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:51:14,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:51:14,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:51:14,078 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:51:14,078 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:51:14,078 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:51:14,078 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:51:14,078 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:51:14,078 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:51:14,079 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:51:14,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:51:14,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:51:14,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:51:14,081 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 19:51:14,484 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:51:14,485 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:51:14,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:51:14 BoogieIcfgContainer [2020-04-18 19:51:14,489 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:51:14,491 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:51:14,491 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:51:14,494 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:51:14,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:51:13" (1/3) ... [2020-04-18 19:51:14,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bee08d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:51:14, skipping insertion in model container [2020-04-18 19:51:14,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:13" (2/3) ... [2020-04-18 19:51:14,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bee08d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:51:14, skipping insertion in model container [2020-04-18 19:51:14,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:51:14" (3/3) ... [2020-04-18 19:51:14,501 INFO L109 eAbstractionObserver]: Analyzing ICFG safe026_tso.opt.i [2020-04-18 19:51:14,510 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:51:14,510 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:51:14,517 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:51:14,518 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:51:14,551 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,552 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,552 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,552 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,553 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,553 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,554 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,555 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,555 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,555 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,556 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,556 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,558 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,559 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,559 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,559 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,560 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,560 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,565 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,566 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,566 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,566 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,582 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,583 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,583 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,583 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,588 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,588 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,589 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,589 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:14,611 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 19:51:14,633 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:51:14,633 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:51:14,633 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:51:14,633 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:51:14,633 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:51:14,634 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:51:14,634 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:51:14,635 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:51:14,657 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 68 transitions, 151 flow [2020-04-18 19:51:15,103 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 7267 states. [2020-04-18 19:51:15,106 INFO L276 IsEmpty]: Start isEmpty. Operand 7267 states. [2020-04-18 19:51:15,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:51:15,140 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:51:15,142 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:51:15,142 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:51:15,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:15,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1418646987, now seen corresponding path program 1 times [2020-04-18 19:51:15,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:51:15,158 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1043836889] [2020-04-18 19:51:15,175 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:15,192 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:51:15,195 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-04-18 19:51:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 19:51:15,196 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:51:15,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:15,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1418646987, now seen corresponding path program 2 times [2020-04-18 19:51:15,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:15,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215786796] [2020-04-18 19:51:15,202 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:15,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:15,698 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 19:51:15,699 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215786796] [2020-04-18 19:51:15,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:15,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:51:15,702 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:15,705 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:15,711 INFO L259 McrAutomatonBuilder]: Finished intersection with 36 states and 35 transitions. [2020-04-18 19:51:15,712 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:15,781 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:51:15,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:51:15,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:51:15,789 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 6 states. [2020-04-18 19:51:15,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:15,904 INFO L93 Difference]: Finished difference Result 36 states and 35 transitions. [2020-04-18 19:51:15,904 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 35 transitions. [2020-04-18 19:51:15,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:51:15,909 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1043836889] [2020-04-18 19:51:15,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:51:15,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:51:15,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1043836889] [2020-04-18 19:51:15,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:51:15,915 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:51:15,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:51:15,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:51:15,924 INFO L87 Difference]: Start difference. First operand 7267 states. Second operand 6 states. [2020-04-18 19:51:16,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:16,430 INFO L93 Difference]: Finished difference Result 16775 states and 57405 transitions. [2020-04-18 19:51:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:51:16,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-04-18 19:51:16,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:51:16,526 INFO L225 Difference]: With dead ends: 16775 [2020-04-18 19:51:16,526 INFO L226 Difference]: Without dead ends: 5457 [2020-04-18 19:51:16,530 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:51:16,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5457 states. [2020-04-18 19:51:16,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5457 to 4545. [2020-04-18 19:51:16,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4545 states. [2020-04-18 19:51:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4545 states to 4545 states and 15266 transitions. [2020-04-18 19:51:16,897 INFO L78 Accepts]: Start accepts. Automaton has 4545 states and 15266 transitions. Word has length 35 [2020-04-18 19:51:16,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:51:16,901 INFO L479 AbstractCegarLoop]: Abstraction has 4545 states and 15266 transitions. [2020-04-18 19:51:16,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:51:16,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4545 states and 15266 transitions. [2020-04-18 19:51:16,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:51:16,919 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:51:16,929 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:51:16,929 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:51:16,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:16,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1657543372, now seen corresponding path program 1 times [2020-04-18 19:51:16,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:51:16,931 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1462505202] [2020-04-18 19:51:16,932 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:16,937 INFO L259 McrAutomatonBuilder]: Finished intersection with 70 states and 101 transitions. [2020-04-18 19:51:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-04-18 19:51:16,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:51:16,945 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:51:16,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:16,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1657543372, now seen corresponding path program 2 times [2020-04-18 19:51:16,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:16,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405041177] [2020-04-18 19:51:16,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:17,139 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 19:51:17,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405041177] [2020-04-18 19:51:17,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:17,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:51:17,141 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:17,145 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:17,153 INFO L259 McrAutomatonBuilder]: Finished intersection with 58 states and 77 transitions. [2020-04-18 19:51:17,154 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:17,279 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:51:17,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:51:17,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:51:17,280 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 6 states. [2020-04-18 19:51:17,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:17,336 INFO L93 Difference]: Finished difference Result 70 states and 101 transitions. [2020-04-18 19:51:17,336 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 101 transitions. [2020-04-18 19:51:17,337 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:51:17,337 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1462505202] [2020-04-18 19:51:17,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:51:17,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:51:17,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1462505202] [2020-04-18 19:51:17,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:51:17,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:51:17,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:51:17,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:51:17,340 INFO L87 Difference]: Start difference. First operand 4545 states and 15266 transitions. Second operand 6 states. [2020-04-18 19:51:17,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:17,509 INFO L93 Difference]: Finished difference Result 4993 states and 16630 transitions. [2020-04-18 19:51:17,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:51:17,511 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-04-18 19:51:17,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:51:17,559 INFO L225 Difference]: With dead ends: 4993 [2020-04-18 19:51:17,560 INFO L226 Difference]: Without dead ends: 4209 [2020-04-18 19:51:17,578 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:51:17,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2020-04-18 19:51:17,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 3921. [2020-04-18 19:51:17,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3921 states. [2020-04-18 19:51:17,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 13142 transitions. [2020-04-18 19:51:17,789 INFO L78 Accepts]: Start accepts. Automaton has 3921 states and 13142 transitions. Word has length 37 [2020-04-18 19:51:17,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:51:17,791 INFO L479 AbstractCegarLoop]: Abstraction has 3921 states and 13142 transitions. [2020-04-18 19:51:17,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:51:17,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3921 states and 13142 transitions. [2020-04-18 19:51:17,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:51:17,801 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:51:17,802 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:51:17,802 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:51:17,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:17,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1358994100, now seen corresponding path program 1 times [2020-04-18 19:51:17,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:51:17,805 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [909016760] [2020-04-18 19:51:17,806 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:17,809 INFO L259 McrAutomatonBuilder]: Finished intersection with 62 states and 85 transitions. [2020-04-18 19:51:17,811 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-04-18 19:51:17,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-04-18 19:51:17,812 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:51:17,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:17,813 INFO L82 PathProgramCache]: Analyzing trace with hash -1358994100, now seen corresponding path program 2 times [2020-04-18 19:51:17,813 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:17,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796988048] [2020-04-18 19:51:17,813 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:18,021 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 19:51:18,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796988048] [2020-04-18 19:51:18,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:18,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:51:18,022 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:18,026 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:18,032 INFO L259 McrAutomatonBuilder]: Finished intersection with 50 states and 61 transitions. [2020-04-18 19:51:18,032 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:18,095 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 2 times. [2020-04-18 19:51:18,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:51:18,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:51:18,096 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 7 states. [2020-04-18 19:51:18,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:18,178 INFO L93 Difference]: Finished difference Result 62 states and 85 transitions. [2020-04-18 19:51:18,179 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 85 transitions. [2020-04-18 19:51:18,181 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:51:18,182 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [909016760] [2020-04-18 19:51:18,183 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:51:18,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:51:18,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [909016760] [2020-04-18 19:51:18,184 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:51:18,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:51:18,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:51:18,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:51:18,185 INFO L87 Difference]: Start difference. First operand 3921 states and 13142 transitions. Second operand 7 states. [2020-04-18 19:51:18,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:18,546 INFO L93 Difference]: Finished difference Result 5797 states and 19018 transitions. [2020-04-18 19:51:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-04-18 19:51:18,546 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-04-18 19:51:18,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:51:18,581 INFO L225 Difference]: With dead ends: 5797 [2020-04-18 19:51:18,582 INFO L226 Difference]: Without dead ends: 4509 [2020-04-18 19:51:18,582 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:51:18,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4509 states. [2020-04-18 19:51:18,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4509 to 3741. [2020-04-18 19:51:18,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3741 states. [2020-04-18 19:51:18,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 12458 transitions. [2020-04-18 19:51:18,745 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 12458 transitions. Word has length 37 [2020-04-18 19:51:18,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:51:18,746 INFO L479 AbstractCegarLoop]: Abstraction has 3741 states and 12458 transitions. [2020-04-18 19:51:18,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:51:18,746 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 12458 transitions. [2020-04-18 19:51:18,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:51:18,757 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:51:18,759 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:51:18,764 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:51:18,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:18,765 INFO L82 PathProgramCache]: Analyzing trace with hash 587165197, now seen corresponding path program 1 times [2020-04-18 19:51:18,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:51:18,767 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [226882323] [2020-04-18 19:51:18,769 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:18,773 INFO L259 McrAutomatonBuilder]: Finished intersection with 148 states and 303 transitions. [2020-04-18 19:51:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states. [2020-04-18 19:51:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-04-18 19:51:18,775 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:51:18,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:18,776 INFO L82 PathProgramCache]: Analyzing trace with hash 587165197, now seen corresponding path program 2 times [2020-04-18 19:51:18,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:18,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813076662] [2020-04-18 19:51:18,777 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:18,970 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 19:51:18,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813076662] [2020-04-18 19:51:18,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:18,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:51:18,971 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:18,978 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:18,991 INFO L259 McrAutomatonBuilder]: Finished intersection with 86 states and 143 transitions. [2020-04-18 19:51:18,992 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:19,041 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:51:19,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:51:19,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-04-18 19:51:19,042 INFO L87 Difference]: Start difference. First operand 148 states. Second operand 6 states. [2020-04-18 19:51:19,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:19,088 INFO L93 Difference]: Finished difference Result 148 states and 303 transitions. [2020-04-18 19:51:19,089 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 303 transitions. [2020-04-18 19:51:19,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:51:19,090 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [226882323] [2020-04-18 19:51:19,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:51:19,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:51:19,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [226882323] [2020-04-18 19:51:19,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 19:51:19,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:51:19,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:51:19,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-04-18 19:51:19,091 INFO L87 Difference]: Start difference. First operand 3741 states and 12458 transitions. Second operand 6 states. [2020-04-18 19:51:19,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:19,229 INFO L93 Difference]: Finished difference Result 4804 states and 15718 transitions. [2020-04-18 19:51:19,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:51:19,229 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-04-18 19:51:19,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:51:19,248 INFO L225 Difference]: With dead ends: 4804 [2020-04-18 19:51:19,249 INFO L226 Difference]: Without dead ends: 3404 [2020-04-18 19:51:19,249 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:51:19,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3404 states. [2020-04-18 19:51:19,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3404 to 3404. [2020-04-18 19:51:19,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3404 states. [2020-04-18 19:51:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3404 states to 3404 states and 11115 transitions. [2020-04-18 19:51:19,411 INFO L78 Accepts]: Start accepts. Automaton has 3404 states and 11115 transitions. Word has length 39 [2020-04-18 19:51:19,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:51:19,417 INFO L479 AbstractCegarLoop]: Abstraction has 3404 states and 11115 transitions. [2020-04-18 19:51:19,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 19:51:19,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3404 states and 11115 transitions. [2020-04-18 19:51:19,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:51:19,511 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:51:19,512 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:51:19,512 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:51:19,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:19,512 INFO L82 PathProgramCache]: Analyzing trace with hash 1669850469, now seen corresponding path program 1 times [2020-04-18 19:51:19,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:51:19,514 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1512260257] [2020-04-18 19:51:19,515 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:19,523 INFO L259 McrAutomatonBuilder]: Finished intersection with 191 states and 412 transitions. [2020-04-18 19:51:19,525 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-04-18 19:51:19,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-04-18 19:51:19,526 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:51:19,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:19,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1669850469, now seen corresponding path program 2 times [2020-04-18 19:51:19,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:19,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689202443] [2020-04-18 19:51:19,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:19,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:19,696 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 19:51:19,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689202443] [2020-04-18 19:51:19,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:19,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:51:19,697 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:19,701 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:19,712 INFO L259 McrAutomatonBuilder]: Finished intersection with 76 states and 114 transitions. [2020-04-18 19:51:19,712 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:19,759 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 19:51:19,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:51:19,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:51:19,760 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 7 states. [2020-04-18 19:51:19,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:19,897 INFO L93 Difference]: Finished difference Result 191 states and 412 transitions. [2020-04-18 19:51:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 412 transitions. [2020-04-18 19:51:19,898 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:51:19,899 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1512260257] [2020-04-18 19:51:19,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:51:19,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:51:19,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1512260257] [2020-04-18 19:51:19,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:51:19,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:51:19,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:51:19,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-04-18 19:51:19,901 INFO L87 Difference]: Start difference. First operand 3404 states and 11115 transitions. Second operand 7 states. [2020-04-18 19:51:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:20,046 INFO L93 Difference]: Finished difference Result 3512 states and 11088 transitions. [2020-04-18 19:51:20,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:51:20,047 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-04-18 19:51:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:51:20,055 INFO L225 Difference]: With dead ends: 3512 [2020-04-18 19:51:20,056 INFO L226 Difference]: Without dead ends: 2324 [2020-04-18 19:51:20,056 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-04-18 19:51:20,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2324 states. [2020-04-18 19:51:20,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2324 to 2308. [2020-04-18 19:51:20,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2308 states. [2020-04-18 19:51:20,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2308 states to 2308 states and 7133 transitions. [2020-04-18 19:51:20,148 INFO L78 Accepts]: Start accepts. Automaton has 2308 states and 7133 transitions. Word has length 40 [2020-04-18 19:51:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:51:20,148 INFO L479 AbstractCegarLoop]: Abstraction has 2308 states and 7133 transitions. [2020-04-18 19:51:20,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:51:20,148 INFO L276 IsEmpty]: Start isEmpty. Operand 2308 states and 7133 transitions. [2020-04-18 19:51:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:51:20,154 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:51:20,154 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:51:20,155 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:51:20,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:20,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1576408866, now seen corresponding path program 1 times [2020-04-18 19:51:20,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:51:20,156 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [137278289] [2020-04-18 19:51:20,157 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:20,164 INFO L259 McrAutomatonBuilder]: Finished intersection with 295 states and 690 transitions. [2020-04-18 19:51:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states. [2020-04-18 19:51:20,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 19:51:20,168 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:51:20,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:20,168 INFO L82 PathProgramCache]: Analyzing trace with hash -706908090, now seen corresponding path program 2 times [2020-04-18 19:51:20,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:20,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385635288] [2020-04-18 19:51:20,173 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:20,333 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 19:51:20,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385635288] [2020-04-18 19:51:20,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:20,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:51:20,334 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:20,340 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:20,352 INFO L259 McrAutomatonBuilder]: Finished intersection with 96 states and 153 transitions. [2020-04-18 19:51:20,352 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:20,402 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 13 times. [2020-04-18 19:51:20,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:51:20,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:51:20,403 INFO L87 Difference]: Start difference. First operand 295 states. Second operand 8 states. [2020-04-18 19:51:20,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:20,622 INFO L93 Difference]: Finished difference Result 295 states and 690 transitions. [2020-04-18 19:51:20,623 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 690 transitions. [2020-04-18 19:51:20,623 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:51:20,624 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [137278289] [2020-04-18 19:51:20,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:51:20,624 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:51:20,624 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [137278289] [2020-04-18 19:51:20,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:51:20,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:51:20,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:51:20,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2020-04-18 19:51:20,626 INFO L87 Difference]: Start difference. First operand 2308 states and 7133 transitions. Second operand 8 states. [2020-04-18 19:51:20,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:20,784 INFO L93 Difference]: Finished difference Result 1804 states and 5399 transitions. [2020-04-18 19:51:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 19:51:20,784 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-04-18 19:51:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:51:20,788 INFO L225 Difference]: With dead ends: 1804 [2020-04-18 19:51:20,788 INFO L226 Difference]: Without dead ends: 1096 [2020-04-18 19:51:20,788 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2020-04-18 19:51:20,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2020-04-18 19:51:20,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1000. [2020-04-18 19:51:20,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1000 states. [2020-04-18 19:51:20,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1000 states to 1000 states and 2866 transitions. [2020-04-18 19:51:20,818 INFO L78 Accepts]: Start accepts. Automaton has 1000 states and 2866 transitions. Word has length 42 [2020-04-18 19:51:20,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:51:20,819 INFO L479 AbstractCegarLoop]: Abstraction has 1000 states and 2866 transitions. [2020-04-18 19:51:20,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:51:20,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1000 states and 2866 transitions. [2020-04-18 19:51:20,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:51:20,823 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:51:20,823 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:51:20,823 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:51:20,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:20,824 INFO L82 PathProgramCache]: Analyzing trace with hash 271339240, now seen corresponding path program 1 times [2020-04-18 19:51:20,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:51:20,824 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [778097113] [2020-04-18 19:51:20,827 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:20,857 INFO L259 McrAutomatonBuilder]: Finished intersection with 1415 states and 4510 transitions. [2020-04-18 19:51:20,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states. [2020-04-18 19:51:20,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:51:20,875 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:51:20,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:20,875 INFO L82 PathProgramCache]: Analyzing trace with hash 121465570, now seen corresponding path program 2 times [2020-04-18 19:51:20,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:20,876 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301680661] [2020-04-18 19:51:20,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:21,071 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 19:51:21,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301680661] [2020-04-18 19:51:21,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:21,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:51:21,073 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:21,077 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:21,110 INFO L259 McrAutomatonBuilder]: Finished intersection with 221 states and 473 transitions. [2020-04-18 19:51:21,110 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:21,165 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:51:21,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:51:21,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:51:21,166 INFO L87 Difference]: Start difference. First operand 1415 states. Second operand 8 states. [2020-04-18 19:51:21,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:21,535 INFO L93 Difference]: Finished difference Result 1426 states and 4520 transitions. [2020-04-18 19:51:21,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 4520 transitions. [2020-04-18 19:51:21,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:51:21,540 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:51:21,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:21,541 INFO L82 PathProgramCache]: Analyzing trace with hash -2125677942, now seen corresponding path program 3 times [2020-04-18 19:51:21,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:21,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822574614] [2020-04-18 19:51:21,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:21,617 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 19:51:21,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822574614] [2020-04-18 19:51:21,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:21,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:51:21,618 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:21,622 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:21,641 INFO L259 McrAutomatonBuilder]: Finished intersection with 132 states and 259 transitions. [2020-04-18 19:51:21,642 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:21,716 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 3 times. [2020-04-18 19:51:21,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:51:21,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2020-04-18 19:51:21,717 INFO L87 Difference]: Start difference. First operand 1426 states and 4520 transitions. Second operand 6 states. [2020-04-18 19:51:21,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:21,883 INFO L93 Difference]: Finished difference Result 2033 states and 6186 transitions. [2020-04-18 19:51:21,883 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 6186 transitions. [2020-04-18 19:51:21,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:51:21,889 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:51:21,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:21,890 INFO L82 PathProgramCache]: Analyzing trace with hash -555597942, now seen corresponding path program 4 times [2020-04-18 19:51:21,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:21,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118282641] [2020-04-18 19:51:21,891 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:21,997 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 19:51:21,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118282641] [2020-04-18 19:51:21,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:21,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:51:21,999 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:22,003 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:22,061 INFO L259 McrAutomatonBuilder]: Finished intersection with 134 states and 270 transitions. [2020-04-18 19:51:22,062 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:22,126 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:51:22,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:51:22,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=716, Unknown=0, NotChecked=0, Total=870 [2020-04-18 19:51:22,127 INFO L87 Difference]: Start difference. First operand 2033 states and 6186 transitions. Second operand 8 states. [2020-04-18 19:51:22,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:22,481 INFO L93 Difference]: Finished difference Result 3474 states and 10172 transitions. [2020-04-18 19:51:22,481 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 10172 transitions. [2020-04-18 19:51:22,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:51:22,490 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:51:22,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:22,491 INFO L82 PathProgramCache]: Analyzing trace with hash 966170998, now seen corresponding path program 5 times [2020-04-18 19:51:22,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:22,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767919628] [2020-04-18 19:51:22,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:22,606 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 19:51:22,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767919628] [2020-04-18 19:51:22,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:22,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:51:22,608 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:22,613 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:22,641 INFO L259 McrAutomatonBuilder]: Finished intersection with 196 states and 411 transitions. [2020-04-18 19:51:22,641 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:22,817 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 14 times. [2020-04-18 19:51:22,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 19:51:22,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1539, Unknown=0, NotChecked=0, Total=1806 [2020-04-18 19:51:22,819 INFO L87 Difference]: Start difference. First operand 3474 states and 10172 transitions. Second operand 9 states. [2020-04-18 19:51:23,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:23,353 INFO L93 Difference]: Finished difference Result 5172 states and 14852 transitions. [2020-04-18 19:51:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 5172 states and 14852 transitions. [2020-04-18 19:51:23,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-04-18 19:51:23,371 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:51:23,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:23,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1356132726, now seen corresponding path program 6 times [2020-04-18 19:51:23,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:23,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125468877] [2020-04-18 19:51:23,372 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:23,560 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 19:51:23,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125468877] [2020-04-18 19:51:23,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:23,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:51:23,565 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:23,575 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:23,612 INFO L259 McrAutomatonBuilder]: Finished intersection with 180 states and 381 transitions. [2020-04-18 19:51:23,612 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:23,940 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 18 times. [2020-04-18 19:51:23,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:51:23,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=2281, Unknown=0, NotChecked=0, Total=2652 [2020-04-18 19:51:23,944 INFO L87 Difference]: Start difference. First operand 5172 states and 14852 transitions. Second operand 11 states. [2020-04-18 19:51:24,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:24,480 INFO L93 Difference]: Finished difference Result 6093 states and 17184 transitions. [2020-04-18 19:51:24,480 INFO L276 IsEmpty]: Start isEmpty. Operand 6093 states and 17184 transitions. [2020-04-18 19:51:24,502 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:51:24,504 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [778097113] [2020-04-18 19:51:24,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:51:24,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:51:24,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [778097113] [2020-04-18 19:51:24,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 19:51:24,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:51:24,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:51:24,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=2727, Unknown=0, NotChecked=0, Total=3192 [2020-04-18 19:51:24,508 INFO L87 Difference]: Start difference. First operand 1000 states and 2866 transitions. Second operand 20 states. [2020-04-18 19:51:26,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:26,441 INFO L93 Difference]: Finished difference Result 2838 states and 8202 transitions. [2020-04-18 19:51:26,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-04-18 19:51:26,441 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-04-18 19:51:26,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:51:26,441 INFO L225 Difference]: With dead ends: 2838 [2020-04-18 19:51:26,441 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:51:26,445 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 463 GetRequests, 352 SyntacticMatches, 2 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4306 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1720, Invalid=10490, Unknown=0, NotChecked=0, Total=12210 [2020-04-18 19:51:26,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:51:26,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:51:26,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:51:26,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:51:26,446 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 46 [2020-04-18 19:51:26,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:51:26,446 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:51:26,446 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 19:51:26,446 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:51:26,446 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:51:26,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:51:26 BasicIcfg [2020-04-18 19:51:26,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:51:26,452 INFO L168 Benchmark]: Toolchain (without parser) took 13288.57 ms. Allocated memory was 143.1 MB in the beginning and 485.5 MB in the end (delta: 342.4 MB). Free memory was 99.2 MB in the beginning and 394.7 MB in the end (delta: -295.5 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:51:26,453 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-04-18 19:51:26,454 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.32 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 97.4 MB in the beginning and 156.6 MB in the end (delta: -59.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:51:26,454 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.67 ms. Allocated memory is still 200.3 MB. Free memory was 156.6 MB in the beginning and 154.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:51:26,455 INFO L168 Benchmark]: Boogie Preprocessor took 27.44 ms. Allocated memory is still 200.3 MB. Free memory was 154.5 MB in the beginning and 153.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-18 19:51:26,455 INFO L168 Benchmark]: RCFGBuilder took 471.40 ms. Allocated memory is still 200.3 MB. Free memory was 153.2 MB in the beginning and 131.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-04-18 19:51:26,456 INFO L168 Benchmark]: TraceAbstraction took 11959.37 ms. Allocated memory was 200.3 MB in the beginning and 485.5 MB in the end (delta: 285.2 MB). Free memory was 130.7 MB in the beginning and 394.7 MB in the end (delta: -264.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. [2020-04-18 19:51:26,459 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 143.1 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 743.32 ms. Allocated memory was 143.1 MB in the beginning and 200.3 MB in the end (delta: 57.1 MB). Free memory was 97.4 MB in the beginning and 156.6 MB in the end (delta: -59.2 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 62.67 ms. Allocated memory is still 200.3 MB. Free memory was 156.6 MB in the beginning and 154.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.44 ms. Allocated memory is still 200.3 MB. Free memory was 154.5 MB in the beginning and 153.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.40 ms. Allocated memory is still 200.3 MB. Free memory was 153.2 MB in the beginning and 131.4 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11959.37 ms. Allocated memory was 200.3 MB in the beginning and 485.5 MB in the end (delta: 285.2 MB). Free memory was 130.7 MB in the beginning and 394.7 MB in the end (delta: -264.0 MB). Peak memory consumption was 21.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 67 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.8s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.4s, HoareTripleCheckerStatistics: 690 SDtfs, 2042 SDslu, 2926 SDs, 0 SdLazy, 566 SolverSat, 194 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 785 GetRequests, 605 SyntacticMatches, 2 SemanticMatches, 178 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4428 ImplicationChecksByTransitivity, 4.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7267occurred 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: 1.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 2080 StatesRemovedByMinimization, 5 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...