/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.epf -i ../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 07:15:24,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 07:15:24,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 07:15:24,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 07:15:24,841 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 07:15:24,842 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 07:15:24,844 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 07:15:24,846 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 07:15:24,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 07:15:24,848 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 07:15:24,849 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 07:15:24,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 07:15:24,851 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 07:15:24,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 07:15:24,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 07:15:24,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 07:15:24,855 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 07:15:24,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 07:15:24,857 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 07:15:24,859 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 07:15:24,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 07:15:24,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 07:15:24,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 07:15:24,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 07:15:24,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 07:15:24,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 07:15:24,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 07:15:24,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 07:15:24,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 07:15:24,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 07:15:24,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 07:15:24,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 07:15:24,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 07:15:24,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 07:15:24,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 07:15:24,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 07:15:24,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 07:15:24,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 07:15:24,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 07:15:24,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 07:15:24,876 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 07:15:24,877 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.epf [2020-04-18 07:15:24,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 07:15:24,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 07:15:24,898 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 07:15:24,898 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 07:15:24,899 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 07:15:24,899 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 07:15:24,900 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 07:15:24,900 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 07:15:24,900 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 07:15:24,900 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 07:15:24,901 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 07:15:24,901 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 07:15:24,901 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 07:15:24,902 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 07:15:24,902 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 07:15:24,902 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 07:15:24,902 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 07:15:24,903 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 07:15:24,903 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 07:15:24,903 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 07:15:24,904 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 07:15:24,904 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 07:15:24,904 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 07:15:24,904 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 07:15:24,905 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 07:15:24,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 07:15:24,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 07:15:24,905 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 07:15:24,905 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 07:15:24,906 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 07:15:25,223 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 07:15:25,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 07:15:25,245 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 07:15:25,247 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 07:15:25,247 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 07:15:25,249 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i [2020-04-18 07:15:25,320 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0beb4bcb/1b2749abcf6a4a17b15c068d47116ba4/FLAG08433dc10 [2020-04-18 07:15:25,875 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 07:15:25,876 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-lit/fkp2013_variant-1.i [2020-04-18 07:15:25,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0beb4bcb/1b2749abcf6a4a17b15c068d47116ba4/FLAG08433dc10 [2020-04-18 07:15:26,134 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0beb4bcb/1b2749abcf6a4a17b15c068d47116ba4 [2020-04-18 07:15:26,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 07:15:26,165 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 07:15:26,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 07:15:26,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 07:15:26,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 07:15:26,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:15:26" (1/1) ... [2020-04-18 07:15:26,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@143ccaa0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:26, skipping insertion in model container [2020-04-18 07:15:26,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:15:26" (1/1) ... [2020-04-18 07:15:26,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 07:15:26,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 07:15:26,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:15:26,691 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 07:15:26,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 07:15:26,841 INFO L208 MainTranslator]: Completed translation [2020-04-18 07:15:26,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:26 WrapperNode [2020-04-18 07:15:26,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 07:15:26,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 07:15:26,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 07:15:26,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 07:15:26,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:26" (1/1) ... [2020-04-18 07:15:26,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:26" (1/1) ... [2020-04-18 07:15:26,899 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 07:15:26,900 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 07:15:26,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 07:15:26,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 07:15:26,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:26" (1/1) ... [2020-04-18 07:15:26,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:26" (1/1) ... [2020-04-18 07:15:26,913 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:26" (1/1) ... [2020-04-18 07:15:26,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:26" (1/1) ... [2020-04-18 07:15:26,919 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:26" (1/1) ... [2020-04-18 07:15:26,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:26" (1/1) ... [2020-04-18 07:15:26,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:26" (1/1) ... [2020-04-18 07:15:26,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 07:15:26,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 07:15:26,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 07:15:26,934 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 07:15:26,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:26" (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 07:15:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2020-04-18 07:15:26,994 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2020-04-18 07:15:26,994 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-04-18 07:15:26,995 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-04-18 07:15:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 07:15:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 07:15:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 07:15:26,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 07:15:26,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 07:15:26,997 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 07:15:27,297 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 07:15:27,297 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-04-18 07:15:27,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:15:27 BoogieIcfgContainer [2020-04-18 07:15:27,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 07:15:27,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 07:15:27,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 07:15:27,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 07:15:27,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:15:26" (1/3) ... [2020-04-18 07:15:27,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e53d757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:15:27, skipping insertion in model container [2020-04-18 07:15:27,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:15:26" (2/3) ... [2020-04-18 07:15:27,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e53d757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:15:27, skipping insertion in model container [2020-04-18 07:15:27,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:15:27" (3/3) ... [2020-04-18 07:15:27,313 INFO L109 eAbstractionObserver]: Analyzing ICFG fkp2013_variant-1.i [2020-04-18 07:15:27,335 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 07:15:27,336 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 07:15:27,343 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 07:15:27,344 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 07:15:27,378 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,379 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,379 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,380 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,383 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,384 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,384 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,384 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,385 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,386 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,386 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,386 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,386 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,386 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,387 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,387 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,387 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,388 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,388 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,388 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,389 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,392 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,393 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,395 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,396 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,396 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,396 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,403 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,404 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,404 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,404 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,404 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:27,421 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 07:15:27,438 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:15:27,439 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:15:27,439 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:15:27,439 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:15:27,439 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:15:27,439 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:15:27,439 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:15:27,439 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:15:27,452 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 61 transitions, 132 flow [2020-04-18 07:15:27,533 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 1274 states. [2020-04-18 07:15:27,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1274 states. [2020-04-18 07:15:27,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-04-18 07:15:27,545 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:15:27,546 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] [2020-04-18 07:15:27,547 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:15:27,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:15:27,553 INFO L82 PathProgramCache]: Analyzing trace with hash -305173420, now seen corresponding path program 1 times [2020-04-18 07:15:27,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:15:27,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969128134] [2020-04-18 07:15:27,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:15:27,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:15:28,061 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 07:15:28,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969128134] [2020-04-18 07:15:28,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:15:28,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-18 07:15:28,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036044050] [2020-04-18 07:15:28,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 07:15:28,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:15:28,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 07:15:28,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 07:15:28,092 INFO L87 Difference]: Start difference. First operand 1274 states. Second operand 9 states. [2020-04-18 07:15:28,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:15:28,460 INFO L93 Difference]: Finished difference Result 1408 states and 3563 transitions. [2020-04-18 07:15:28,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 07:15:28,462 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-04-18 07:15:28,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:15:28,486 INFO L225 Difference]: With dead ends: 1408 [2020-04-18 07:15:28,486 INFO L226 Difference]: Without dead ends: 935 [2020-04-18 07:15:28,488 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-04-18 07:15:28,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 935 states. [2020-04-18 07:15:28,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 935 to 863. [2020-04-18 07:15:28,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 863 states. [2020-04-18 07:15:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 2155 transitions. [2020-04-18 07:15:28,631 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 2155 transitions. Word has length 29 [2020-04-18 07:15:28,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:15:28,632 INFO L479 AbstractCegarLoop]: Abstraction has 863 states and 2155 transitions. [2020-04-18 07:15:28,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 07:15:28,632 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 2155 transitions. [2020-04-18 07:15:28,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-04-18 07:15:28,636 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:15:28,636 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 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 07:15:28,636 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-04-18 07:15:28,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:15:28,637 INFO L82 PathProgramCache]: Analyzing trace with hash 447630108, now seen corresponding path program 1 times [2020-04-18 07:15:28,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:15:28,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889540603] [2020-04-18 07:15:28,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:15:28,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:15:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:15:28,761 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:15:28,762 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:15:28,764 WARN L363 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:15:28,764 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-04-18 07:15:28,776 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,776 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,776 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,776 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,777 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,777 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,777 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,777 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,778 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,778 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,778 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,778 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,778 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,779 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,779 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,779 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,779 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,780 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,780 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,780 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,781 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,781 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,781 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,781 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,781 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,782 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,782 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,782 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,782 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,783 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,783 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,783 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,783 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,783 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,784 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,784 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,784 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,784 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,784 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,785 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,785 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,785 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,786 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,786 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,786 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,787 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,787 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,787 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,789 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,790 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,790 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,790 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,790 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,790 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,792 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,793 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,793 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,793 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,793 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,796 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,796 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,796 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,796 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of2ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,797 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of2ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:28,799 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 07:15:28,800 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:15:28,800 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:15:28,800 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:15:28,800 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:15:28,801 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:15:28,801 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:15:28,801 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:15:28,801 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:15:28,804 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 85 places, 79 transitions, 182 flow [2020-04-18 07:15:29,339 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 9044 states. [2020-04-18 07:15:29,339 INFO L276 IsEmpty]: Start isEmpty. Operand 9044 states. [2020-04-18 07:15:29,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-04-18 07:15:29,347 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:15:29,348 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] [2020-04-18 07:15:29,349 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:15:29,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:15:29,350 INFO L82 PathProgramCache]: Analyzing trace with hash 224627827, now seen corresponding path program 1 times [2020-04-18 07:15:29,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:15:29,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921980064] [2020-04-18 07:15:29,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:15:29,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:15:29,586 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 07:15:29,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921980064] [2020-04-18 07:15:29,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:15:29,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-18 07:15:29,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499126905] [2020-04-18 07:15:29,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 07:15:29,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:15:29,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 07:15:29,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 07:15:29,590 INFO L87 Difference]: Start difference. First operand 9044 states. Second operand 9 states. [2020-04-18 07:15:29,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:15:29,923 INFO L93 Difference]: Finished difference Result 11824 states and 39861 transitions. [2020-04-18 07:15:29,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 07:15:29,923 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-04-18 07:15:29,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:15:29,994 INFO L225 Difference]: With dead ends: 11824 [2020-04-18 07:15:29,995 INFO L226 Difference]: Without dead ends: 8207 [2020-04-18 07:15:29,995 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-04-18 07:15:30,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8207 states. [2020-04-18 07:15:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8207 to 7352. [2020-04-18 07:15:30,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7352 states. [2020-04-18 07:15:30,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 24692 transitions. [2020-04-18 07:15:30,374 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 24692 transitions. Word has length 29 [2020-04-18 07:15:30,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:15:30,375 INFO L479 AbstractCegarLoop]: Abstraction has 7352 states and 24692 transitions. [2020-04-18 07:15:30,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 07:15:30,375 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 24692 transitions. [2020-04-18 07:15:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 07:15:30,378 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:15:30,378 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] [2020-04-18 07:15:30,378 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:15:30,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:15:30,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1801700953, now seen corresponding path program 1 times [2020-04-18 07:15:30,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:15:30,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282965650] [2020-04-18 07:15:30,379 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:15:30,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:15:30,476 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 07:15:30,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282965650] [2020-04-18 07:15:30,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:15:30,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-18 07:15:30,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143103] [2020-04-18 07:15:30,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 07:15:30,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:15:30,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 07:15:30,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-18 07:15:30,478 INFO L87 Difference]: Start difference. First operand 7352 states and 24692 transitions. Second operand 9 states. [2020-04-18 07:15:31,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:15:31,393 INFO L93 Difference]: Finished difference Result 14768 states and 48478 transitions. [2020-04-18 07:15:31,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-04-18 07:15:31,393 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-04-18 07:15:31,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:15:31,486 INFO L225 Difference]: With dead ends: 14768 [2020-04-18 07:15:31,487 INFO L226 Difference]: Without dead ends: 13720 [2020-04-18 07:15:31,489 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 07:15:31,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13720 states. [2020-04-18 07:15:31,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13720 to 6295. [2020-04-18 07:15:31,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6295 states. [2020-04-18 07:15:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6295 states to 6295 states and 21128 transitions. [2020-04-18 07:15:31,767 INFO L78 Accepts]: Start accepts. Automaton has 6295 states and 21128 transitions. Word has length 38 [2020-04-18 07:15:31,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:15:31,768 INFO L479 AbstractCegarLoop]: Abstraction has 6295 states and 21128 transitions. [2020-04-18 07:15:31,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 07:15:31,768 INFO L276 IsEmpty]: Start isEmpty. Operand 6295 states and 21128 transitions. [2020-04-18 07:15:31,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-04-18 07:15:31,772 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:15:31,772 INFO L425 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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 07:15:31,773 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:15:31,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:15:31,773 INFO L82 PathProgramCache]: Analyzing trace with hash 758782953, now seen corresponding path program 1 times [2020-04-18 07:15:31,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:15:31,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213238255] [2020-04-18 07:15:31,774 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:15:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:15:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-04-18 07:15:31,814 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-04-18 07:15:31,814 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-04-18 07:15:31,815 WARN L363 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-04-18 07:15:31,816 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-04-18 07:15:31,828 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,829 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,829 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,829 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,829 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,829 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,830 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,830 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,830 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,830 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,831 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,831 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,831 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,831 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,831 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,832 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,832 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,832 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,832 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,954 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,955 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,955 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,955 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,955 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,955 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,956 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,956 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,956 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,956 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,956 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,957 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,957 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,957 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,957 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,957 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,958 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,958 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,958 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,958 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,959 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,959 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,959 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,959 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,959 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,960 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,960 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,960 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,960 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,960 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,961 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,961 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,961 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,961 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,961 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,962 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,962 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,962 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,962 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,962 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,962 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,963 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,963 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,963 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,964 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,964 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,964 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,964 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,964 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,964 WARN L315 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,966 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,967 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,967 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,967 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,967 WARN L315 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,967 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,971 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0___VERIFIER_assert_~cond not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,972 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0___VERIFIER_assert_#in~cond| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,972 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,972 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,972 WARN L315 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,973 WARN L315 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,979 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,979 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,979 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread1of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,979 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,980 WARN L315 ript$VariableManager]: TermVariabe thr2Thread1of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,981 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,981 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,982 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,982 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread2of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,982 WARN L315 ript$VariableManager]: TermVariabe thr2Thread2of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,985 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,985 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,985 WARN L315 ript$VariableManager]: TermVariabe |thr2Thread3of3ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,986 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~t~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,986 WARN L315 ript$VariableManager]: TermVariabe thr2Thread3of3ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 07:15:31,988 INFO L251 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-04-18 07:15:31,989 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 07:15:31,989 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 07:15:31,989 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 07:15:31,989 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 07:15:31,989 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 07:15:31,989 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 07:15:31,989 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 07:15:31,990 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 07:15:31,994 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 106 places, 97 transitions, 236 flow [2020-04-18 07:15:41,665 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 63434 states. [2020-04-18 07:15:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 63434 states. [2020-04-18 07:15:41,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-04-18 07:15:41,666 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:15:41,666 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] [2020-04-18 07:15:41,666 INFO L427 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:15:41,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:15:41,667 INFO L82 PathProgramCache]: Analyzing trace with hash -2111596188, now seen corresponding path program 1 times [2020-04-18 07:15:41,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:15:41,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624065248] [2020-04-18 07:15:41,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:15:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:15:41,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:15:41,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624065248] [2020-04-18 07:15:41,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:15:41,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-18 07:15:41,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180215216] [2020-04-18 07:15:41,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 07:15:41,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:15:41,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 07:15:41,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-04-18 07:15:41,814 INFO L87 Difference]: Start difference. First operand 63434 states. Second operand 9 states. [2020-04-18 07:15:44,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:15:44,230 INFO L93 Difference]: Finished difference Result 90784 states and 383719 transitions. [2020-04-18 07:15:44,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-04-18 07:15:44,231 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-04-18 07:15:44,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:15:44,626 INFO L225 Difference]: With dead ends: 90784 [2020-04-18 07:15:44,626 INFO L226 Difference]: Without dead ends: 64007 [2020-04-18 07:15:44,627 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-04-18 07:15:45,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64007 states. [2020-04-18 07:15:46,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64007 to 56555. [2020-04-18 07:15:46,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56555 states. [2020-04-18 07:15:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56555 states to 56555 states and 238905 transitions. [2020-04-18 07:15:46,814 INFO L78 Accepts]: Start accepts. Automaton has 56555 states and 238905 transitions. Word has length 29 [2020-04-18 07:15:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:15:46,814 INFO L479 AbstractCegarLoop]: Abstraction has 56555 states and 238905 transitions. [2020-04-18 07:15:46,814 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 07:15:46,814 INFO L276 IsEmpty]: Start isEmpty. Operand 56555 states and 238905 transitions. [2020-04-18 07:15:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-04-18 07:15:46,816 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:15:46,816 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] [2020-04-18 07:15:46,816 INFO L427 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:15:46,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:15:46,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1566167098, now seen corresponding path program 1 times [2020-04-18 07:15:46,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:15:46,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206303409] [2020-04-18 07:15:46,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:15:46,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:15:46,910 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 07:15:46,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206303409] [2020-04-18 07:15:46,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 07:15:46,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-04-18 07:15:46,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217190543] [2020-04-18 07:15:46,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-04-18 07:15:46,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:15:46,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-04-18 07:15:46,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-04-18 07:15:46,913 INFO L87 Difference]: Start difference. First operand 56555 states and 238905 transitions. Second operand 9 states. [2020-04-18 07:15:50,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:15:50,436 INFO L93 Difference]: Finished difference Result 135728 states and 558699 transitions. [2020-04-18 07:15:50,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-04-18 07:15:50,436 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-04-18 07:15:50,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:15:50,941 INFO L225 Difference]: With dead ends: 135728 [2020-04-18 07:15:50,942 INFO L226 Difference]: Without dead ends: 128344 [2020-04-18 07:15:50,942 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=300, Invalid=890, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 07:15:51,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128344 states. [2020-04-18 07:15:55,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128344 to 55486. [2020-04-18 07:15:55,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55486 states. [2020-04-18 07:15:55,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55486 states to 55486 states and 233323 transitions. [2020-04-18 07:15:55,938 INFO L78 Accepts]: Start accepts. Automaton has 55486 states and 233323 transitions. Word has length 38 [2020-04-18 07:15:55,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:15:55,939 INFO L479 AbstractCegarLoop]: Abstraction has 55486 states and 233323 transitions. [2020-04-18 07:15:55,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-04-18 07:15:55,939 INFO L276 IsEmpty]: Start isEmpty. Operand 55486 states and 233323 transitions. [2020-04-18 07:15:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 07:15:55,945 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:15:55,945 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 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 07:15:55,945 INFO L427 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:15:56,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:15:56,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1983460978, now seen corresponding path program 1 times [2020-04-18 07:15:56,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:15:56,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283073457] [2020-04-18 07:15:56,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:15:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:15:56,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:15:56,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283073457] [2020-04-18 07:15:56,672 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458258588] [2020-04-18 07:15:56,673 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:15:56,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:15:56,761 INFO L264 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2020-04-18 07:15:56,764 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:15:56,854 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:15:57,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:15:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:15:57,052 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:15:57,052 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14] total 23 [2020-04-18 07:15:57,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797065990] [2020-04-18 07:15:57,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 07:15:57,053 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:15:57,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 07:15:57,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2020-04-18 07:15:57,055 INFO L87 Difference]: Start difference. First operand 55486 states and 233323 transitions. Second operand 23 states. [2020-04-18 07:16:00,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:00,803 INFO L93 Difference]: Finished difference Result 120637 states and 492538 transitions. [2020-04-18 07:16:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-04-18 07:16:00,804 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 45 [2020-04-18 07:16:00,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:16:01,331 INFO L225 Difference]: With dead ends: 120637 [2020-04-18 07:16:01,332 INFO L226 Difference]: Without dead ends: 113037 [2020-04-18 07:16:01,333 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 758 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=788, Invalid=2752, Unknown=0, NotChecked=0, Total=3540 [2020-04-18 07:16:01,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113037 states. [2020-04-18 07:16:06,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113037 to 53316. [2020-04-18 07:16:06,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53316 states. [2020-04-18 07:16:06,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53316 states to 53316 states and 222901 transitions. [2020-04-18 07:16:06,830 INFO L78 Accepts]: Start accepts. Automaton has 53316 states and 222901 transitions. Word has length 45 [2020-04-18 07:16:06,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:16:06,831 INFO L479 AbstractCegarLoop]: Abstraction has 53316 states and 222901 transitions. [2020-04-18 07:16:06,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 07:16:06,832 INFO L276 IsEmpty]: Start isEmpty. Operand 53316 states and 222901 transitions. [2020-04-18 07:16:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 07:16:06,844 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:06,845 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 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 07:16:07,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:16:07,048 INFO L427 AbstractCegarLoop]: === Iteration 4 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:07,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:07,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1868865648, now seen corresponding path program 1 times [2020-04-18 07:16:07,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:07,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508932103] [2020-04-18 07:16:07,050 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:07,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:07,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508932103] [2020-04-18 07:16:07,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389156462] [2020-04-18 07:16:07,233 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:16:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:07,327 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2020-04-18 07:16:07,341 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:16:08,008 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:16:08,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:08,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:16:08,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-04-18 07:16:08,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458350111] [2020-04-18 07:16:08,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 07:16:08,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:08,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 07:16:08,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2020-04-18 07:16:08,043 INFO L87 Difference]: Start difference. First operand 53316 states and 222901 transitions. Second operand 24 states. [2020-04-18 07:16:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:13,000 INFO L93 Difference]: Finished difference Result 202154 states and 820513 transitions. [2020-04-18 07:16:13,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2020-04-18 07:16:13,001 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 49 [2020-04-18 07:16:13,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:16:13,588 INFO L225 Difference]: With dead ends: 202154 [2020-04-18 07:16:13,588 INFO L226 Difference]: Without dead ends: 198386 [2020-04-18 07:16:13,591 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3212 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1768, Invalid=8534, Unknown=0, NotChecked=0, Total=10302 [2020-04-18 07:16:14,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198386 states. [2020-04-18 07:16:20,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198386 to 55756. [2020-04-18 07:16:20,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55756 states. [2020-04-18 07:16:20,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55756 states to 55756 states and 233343 transitions. [2020-04-18 07:16:20,751 INFO L78 Accepts]: Start accepts. Automaton has 55756 states and 233343 transitions. Word has length 49 [2020-04-18 07:16:20,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:16:20,751 INFO L479 AbstractCegarLoop]: Abstraction has 55756 states and 233343 transitions. [2020-04-18 07:16:20,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 07:16:20,752 INFO L276 IsEmpty]: Start isEmpty. Operand 55756 states and 233343 transitions. [2020-04-18 07:16:20,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 07:16:20,762 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:20,762 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 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 07:16:20,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:16:20,966 INFO L427 AbstractCegarLoop]: === Iteration 5 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:20,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:20,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1367934736, now seen corresponding path program 2 times [2020-04-18 07:16:20,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:20,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486531544] [2020-04-18 07:16:20,968 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:21,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:21,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486531544] [2020-04-18 07:16:21,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227805878] [2020-04-18 07:16:21,107 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:16:21,171 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 07:16:21,172 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:16:21,173 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2020-04-18 07:16:21,176 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:16:21,308 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:16:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:21,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:16:21,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-04-18 07:16:21,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390199165] [2020-04-18 07:16:21,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 07:16:21,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:21,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 07:16:21,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=471, Unknown=0, NotChecked=0, Total=552 [2020-04-18 07:16:21,351 INFO L87 Difference]: Start difference. First operand 55756 states and 233343 transitions. Second operand 24 states. [2020-04-18 07:16:33,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:33,094 INFO L93 Difference]: Finished difference Result 254855 states and 1028726 transitions. [2020-04-18 07:16:33,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2020-04-18 07:16:33,094 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 49 [2020-04-18 07:16:33,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:16:33,833 INFO L225 Difference]: With dead ends: 254855 [2020-04-18 07:16:33,833 INFO L226 Difference]: Without dead ends: 250943 [2020-04-18 07:16:33,840 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8356 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=3393, Invalid=19863, Unknown=0, NotChecked=0, Total=23256 [2020-04-18 07:16:34,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250943 states. [2020-04-18 07:16:36,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250943 to 54514. [2020-04-18 07:16:36,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54514 states. [2020-04-18 07:16:36,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54514 states to 54514 states and 228501 transitions. [2020-04-18 07:16:36,921 INFO L78 Accepts]: Start accepts. Automaton has 54514 states and 228501 transitions. Word has length 49 [2020-04-18 07:16:36,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:16:36,922 INFO L479 AbstractCegarLoop]: Abstraction has 54514 states and 228501 transitions. [2020-04-18 07:16:36,922 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 07:16:36,922 INFO L276 IsEmpty]: Start isEmpty. Operand 54514 states and 228501 transitions. [2020-04-18 07:16:36,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 07:16:36,929 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:36,929 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 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 07:16:37,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:16:37,130 INFO L427 AbstractCegarLoop]: === Iteration 6 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:37,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:37,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1271564790, now seen corresponding path program 3 times [2020-04-18 07:16:37,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:37,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752845554] [2020-04-18 07:16:37,132 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:37,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:37,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752845554] [2020-04-18 07:16:37,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318291146] [2020-04-18 07:16:37,320 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:16:37,396 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 07:16:37,396 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:16:37,397 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2020-04-18 07:16:37,408 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:16:37,642 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:16:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:37,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:16:37,701 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-04-18 07:16:37,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561138594] [2020-04-18 07:16:37,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 07:16:37,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:37,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 07:16:37,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2020-04-18 07:16:37,703 INFO L87 Difference]: Start difference. First operand 54514 states and 228501 transitions. Second operand 24 states. [2020-04-18 07:16:45,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:45,095 INFO L93 Difference]: Finished difference Result 271309 states and 1100703 transitions. [2020-04-18 07:16:45,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-04-18 07:16:45,096 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 49 [2020-04-18 07:16:45,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:16:45,966 INFO L225 Difference]: With dead ends: 271309 [2020-04-18 07:16:45,966 INFO L226 Difference]: Without dead ends: 267541 [2020-04-18 07:16:45,970 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7295 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2885, Invalid=17137, Unknown=0, NotChecked=0, Total=20022 [2020-04-18 07:16:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267541 states. [2020-04-18 07:16:49,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267541 to 54518. [2020-04-18 07:16:49,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54518 states. [2020-04-18 07:16:50,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54518 states to 54518 states and 228513 transitions. [2020-04-18 07:16:50,035 INFO L78 Accepts]: Start accepts. Automaton has 54518 states and 228513 transitions. Word has length 49 [2020-04-18 07:16:50,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:16:50,036 INFO L479 AbstractCegarLoop]: Abstraction has 54518 states and 228513 transitions. [2020-04-18 07:16:50,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 07:16:50,036 INFO L276 IsEmpty]: Start isEmpty. Operand 54518 states and 228513 transitions. [2020-04-18 07:16:50,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 07:16:50,043 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:16:50,043 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 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 07:16:50,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:16:50,244 INFO L427 AbstractCegarLoop]: === Iteration 7 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:16:50,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:16:50,245 INFO L82 PathProgramCache]: Analyzing trace with hash 910973876, now seen corresponding path program 4 times [2020-04-18 07:16:50,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:16:50,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028411692] [2020-04-18 07:16:50,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:16:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:16:50,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:50,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028411692] [2020-04-18 07:16:50,371 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561380271] [2020-04-18 07:16:50,371 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:16:51,406 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 07:16:51,407 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:16:51,407 INFO L264 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 15 conjunts are in the unsatisfiable core [2020-04-18 07:16:51,409 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:16:51,577 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:16:51,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:16:51,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:16:51,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-04-18 07:16:51,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336359136] [2020-04-18 07:16:51,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 07:16:51,623 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:16:51,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 07:16:51,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2020-04-18 07:16:51,624 INFO L87 Difference]: Start difference. First operand 54518 states and 228513 transitions. Second operand 24 states. [2020-04-18 07:16:59,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:16:59,398 INFO L93 Difference]: Finished difference Result 227268 states and 919292 transitions. [2020-04-18 07:16:59,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2020-04-18 07:16:59,398 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 49 [2020-04-18 07:16:59,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:17:00,734 INFO L225 Difference]: With dead ends: 227268 [2020-04-18 07:17:00,735 INFO L226 Difference]: Without dead ends: 221820 [2020-04-18 07:17:00,736 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6128 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2647, Invalid=14383, Unknown=0, NotChecked=0, Total=17030 [2020-04-18 07:17:01,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221820 states. [2020-04-18 07:17:03,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221820 to 54530. [2020-04-18 07:17:03,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54530 states. [2020-04-18 07:17:03,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54530 states to 54530 states and 228545 transitions. [2020-04-18 07:17:03,699 INFO L78 Accepts]: Start accepts. Automaton has 54530 states and 228545 transitions. Word has length 49 [2020-04-18 07:17:03,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:17:03,700 INFO L479 AbstractCegarLoop]: Abstraction has 54530 states and 228545 transitions. [2020-04-18 07:17:03,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 07:17:03,700 INFO L276 IsEmpty]: Start isEmpty. Operand 54530 states and 228545 transitions. [2020-04-18 07:17:03,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 07:17:03,707 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:17:03,707 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 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 07:17:03,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:17:03,911 INFO L427 AbstractCegarLoop]: === Iteration 8 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:17:03,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:17:03,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1420773224, now seen corresponding path program 5 times [2020-04-18 07:17:03,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:17:03,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99872928] [2020-04-18 07:17:03,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:17:03,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:17:04,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:17:04,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99872928] [2020-04-18 07:17:04,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577962487] [2020-04-18 07:17:04,090 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:17:04,158 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 07:17:04,158 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:17:04,159 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2020-04-18 07:17:04,161 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:17:04,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:17:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:17:04,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:17:04,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-04-18 07:17:04,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006952032] [2020-04-18 07:17:04,356 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 07:17:04,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:17:04,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 07:17:04,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2020-04-18 07:17:04,357 INFO L87 Difference]: Start difference. First operand 54530 states and 228545 transitions. Second operand 24 states. [2020-04-18 07:17:08,177 WARN L192 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2020-04-18 07:17:21,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:17:21,620 INFO L93 Difference]: Finished difference Result 396150 states and 1606166 transitions. [2020-04-18 07:17:21,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 310 states. [2020-04-18 07:17:21,621 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 49 [2020-04-18 07:17:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:17:22,812 INFO L225 Difference]: With dead ends: 396150 [2020-04-18 07:17:22,812 INFO L226 Difference]: Without dead ends: 392382 [2020-04-18 07:17:22,819 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 322 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45538 ImplicationChecksByTransitivity, 11.0s TimeCoverageRelationStatistics Valid=11191, Invalid=93461, Unknown=0, NotChecked=0, Total=104652 [2020-04-18 07:17:30,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392382 states. [2020-04-18 07:17:33,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392382 to 54536. [2020-04-18 07:17:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54536 states. [2020-04-18 07:17:33,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54536 states to 54536 states and 228563 transitions. [2020-04-18 07:17:33,850 INFO L78 Accepts]: Start accepts. Automaton has 54536 states and 228563 transitions. Word has length 49 [2020-04-18 07:17:33,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:17:33,850 INFO L479 AbstractCegarLoop]: Abstraction has 54536 states and 228563 transitions. [2020-04-18 07:17:33,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 07:17:33,850 INFO L276 IsEmpty]: Start isEmpty. Operand 54536 states and 228563 transitions. [2020-04-18 07:17:33,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 07:17:33,857 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:17:33,858 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 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 07:17:34,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:17:34,059 INFO L427 AbstractCegarLoop]: === Iteration 9 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:17:34,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:17:34,060 INFO L82 PathProgramCache]: Analyzing trace with hash -691655406, now seen corresponding path program 6 times [2020-04-18 07:17:34,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:17:34,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134235218] [2020-04-18 07:17:34,061 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:17:34,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:17:34,224 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:17:34,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134235218] [2020-04-18 07:17:34,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911573077] [2020-04-18 07:17:34,225 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:17:34,312 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-04-18 07:17:34,312 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:17:34,313 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjunts are in the unsatisfiable core [2020-04-18 07:17:34,320 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:17:34,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:17:34,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:17:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:17:34,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:17:34,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2020-04-18 07:17:34,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366831326] [2020-04-18 07:17:34,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-18 07:17:34,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:17:34,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-18 07:17:34,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2020-04-18 07:17:34,679 INFO L87 Difference]: Start difference. First operand 54536 states and 228563 transitions. Second operand 27 states. [2020-04-18 07:17:35,654 WARN L192 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 15 [2020-04-18 07:17:45,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:17:45,471 INFO L93 Difference]: Finished difference Result 197025 states and 792983 transitions. [2020-04-18 07:17:45,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-04-18 07:17:45,471 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 49 [2020-04-18 07:17:45,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:17:46,607 INFO L225 Difference]: With dead ends: 197025 [2020-04-18 07:17:46,608 INFO L226 Difference]: Without dead ends: 191577 [2020-04-18 07:17:46,609 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8367 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=3349, Invalid=19907, Unknown=0, NotChecked=0, Total=23256 [2020-04-18 07:17:47,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191577 states. [2020-04-18 07:17:49,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191577 to 54532. [2020-04-18 07:17:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54532 states. [2020-04-18 07:17:49,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54532 states to 54532 states and 228551 transitions. [2020-04-18 07:17:49,376 INFO L78 Accepts]: Start accepts. Automaton has 54532 states and 228551 transitions. Word has length 49 [2020-04-18 07:17:49,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:17:49,376 INFO L479 AbstractCegarLoop]: Abstraction has 54532 states and 228551 transitions. [2020-04-18 07:17:49,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-18 07:17:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 54532 states and 228551 transitions. [2020-04-18 07:17:49,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 07:17:49,383 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:17:49,383 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 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 07:17:49,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:17:49,584 INFO L427 AbstractCegarLoop]: === Iteration 10 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:17:49,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:17:49,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1450775628, now seen corresponding path program 7 times [2020-04-18 07:17:49,585 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:17:49,586 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088650393] [2020-04-18 07:17:49,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:17:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:17:49,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:17:49,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088650393] [2020-04-18 07:17:49,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1112470434] [2020-04-18 07:17:49,706 INFO L92 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:17:49,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:17:49,764 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjunts are in the unsatisfiable core [2020-04-18 07:17:49,765 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:17:49,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:17:49,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:17:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:17:50,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:17:50,026 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2020-04-18 07:17:50,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187891015] [2020-04-18 07:17:50,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-18 07:17:50,027 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:17:50,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-18 07:17:50,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-04-18 07:17:50,028 INFO L87 Difference]: Start difference. First operand 54532 states and 228551 transitions. Second operand 27 states. [2020-04-18 07:17:54,899 WARN L192 SmtUtils]: Spent 2.12 s on a formula simplification. DAG size of input: 33 DAG size of output: 20 [2020-04-18 07:17:59,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:17:59,526 INFO L93 Difference]: Finished difference Result 164595 states and 665527 transitions. [2020-04-18 07:17:59,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-04-18 07:17:59,526 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 49 [2020-04-18 07:17:59,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:17:59,980 INFO L225 Difference]: With dead ends: 164595 [2020-04-18 07:17:59,980 INFO L226 Difference]: Without dead ends: 159147 [2020-04-18 07:17:59,981 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7214 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=2904, Invalid=16836, Unknown=0, NotChecked=0, Total=19740 [2020-04-18 07:18:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159147 states. [2020-04-18 07:18:02,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159147 to 54538. [2020-04-18 07:18:02,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54538 states. [2020-04-18 07:18:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54538 states to 54538 states and 228567 transitions. [2020-04-18 07:18:02,527 INFO L78 Accepts]: Start accepts. Automaton has 54538 states and 228567 transitions. Word has length 49 [2020-04-18 07:18:02,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:18:02,527 INFO L479 AbstractCegarLoop]: Abstraction has 54538 states and 228567 transitions. [2020-04-18 07:18:02,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-18 07:18:02,527 INFO L276 IsEmpty]: Start isEmpty. Operand 54538 states and 228567 transitions. [2020-04-18 07:18:02,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 07:18:02,534 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:18:02,535 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 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 07:18:02,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:18:02,736 INFO L427 AbstractCegarLoop]: === Iteration 11 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:18:02,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:18:02,737 INFO L82 PathProgramCache]: Analyzing trace with hash 126577370, now seen corresponding path program 8 times [2020-04-18 07:18:02,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:18:02,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275112742] [2020-04-18 07:18:02,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:18:02,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:18:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:02,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275112742] [2020-04-18 07:18:02,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249380328] [2020-04-18 07:18:02,893 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:18:02,950 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 07:18:02,951 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:18:02,951 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2020-04-18 07:18:02,952 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:18:03,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:18:03,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:03,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:18:03,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-04-18 07:18:03,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911238476] [2020-04-18 07:18:03,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 07:18:03,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:18:03,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 07:18:03,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2020-04-18 07:18:03,144 INFO L87 Difference]: Start difference. First operand 54538 states and 228567 transitions. Second operand 24 states. [2020-04-18 07:18:09,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:18:09,838 INFO L93 Difference]: Finished difference Result 228693 states and 927069 transitions. [2020-04-18 07:18:09,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2020-04-18 07:18:09,838 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 49 [2020-04-18 07:18:09,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:18:10,474 INFO L225 Difference]: With dead ends: 228693 [2020-04-18 07:18:10,475 INFO L226 Difference]: Without dead ends: 224925 [2020-04-18 07:18:10,476 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8559 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=3234, Invalid=20022, Unknown=0, NotChecked=0, Total=23256 [2020-04-18 07:18:15,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224925 states. [2020-04-18 07:18:17,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224925 to 52908. [2020-04-18 07:18:17,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52908 states. [2020-04-18 07:18:17,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52908 states to 52908 states and 221635 transitions. [2020-04-18 07:18:17,807 INFO L78 Accepts]: Start accepts. Automaton has 52908 states and 221635 transitions. Word has length 49 [2020-04-18 07:18:17,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:18:17,807 INFO L479 AbstractCegarLoop]: Abstraction has 52908 states and 221635 transitions. [2020-04-18 07:18:17,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-04-18 07:18:17,807 INFO L276 IsEmpty]: Start isEmpty. Operand 52908 states and 221635 transitions. [2020-04-18 07:18:17,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 07:18:17,814 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:18:17,814 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 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 07:18:18,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:18:18,016 INFO L427 AbstractCegarLoop]: === Iteration 12 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:18:18,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:18:18,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1985851260, now seen corresponding path program 9 times [2020-04-18 07:18:18,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:18:18,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284468407] [2020-04-18 07:18:18,018 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:18:18,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:18:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:18,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284468407] [2020-04-18 07:18:18,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309396247] [2020-04-18 07:18:18,176 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:18:18,233 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-04-18 07:18:18,234 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:18:18,234 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 20 conjunts are in the unsatisfiable core [2020-04-18 07:18:18,236 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:18:18,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:18:18,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:18:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:18,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:18:18,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2020-04-18 07:18:18,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408468186] [2020-04-18 07:18:18,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-18 07:18:18,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:18:18,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-18 07:18:18,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2020-04-18 07:18:18,499 INFO L87 Difference]: Start difference. First operand 52908 states and 221635 transitions. Second operand 27 states. [2020-04-18 07:18:27,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:18:27,091 INFO L93 Difference]: Finished difference Result 206472 states and 829936 transitions. [2020-04-18 07:18:27,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2020-04-18 07:18:27,091 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 49 [2020-04-18 07:18:27,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:18:27,624 INFO L225 Difference]: With dead ends: 206472 [2020-04-18 07:18:27,624 INFO L226 Difference]: Without dead ends: 201024 [2020-04-18 07:18:27,626 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8188 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=3281, Invalid=19069, Unknown=0, NotChecked=0, Total=22350 [2020-04-18 07:18:28,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201024 states. [2020-04-18 07:18:30,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201024 to 52904. [2020-04-18 07:18:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52904 states. [2020-04-18 07:18:30,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52904 states to 52904 states and 221623 transitions. [2020-04-18 07:18:30,579 INFO L78 Accepts]: Start accepts. Automaton has 52904 states and 221623 transitions. Word has length 49 [2020-04-18 07:18:30,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:18:30,580 INFO L479 AbstractCegarLoop]: Abstraction has 52904 states and 221623 transitions. [2020-04-18 07:18:30,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-18 07:18:30,580 INFO L276 IsEmpty]: Start isEmpty. Operand 52904 states and 221623 transitions. [2020-04-18 07:18:30,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 07:18:30,587 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:18:30,588 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 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 07:18:31,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:18:31,254 INFO L427 AbstractCegarLoop]: === Iteration 13 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:18:31,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:18:31,255 INFO L82 PathProgramCache]: Analyzing trace with hash 1549995814, now seen corresponding path program 10 times [2020-04-18 07:18:31,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:18:31,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747926823] [2020-04-18 07:18:31,256 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:18:31,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:18:31,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:31,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747926823] [2020-04-18 07:18:31,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143208523] [2020-04-18 07:18:31,383 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:18:31,442 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-04-18 07:18:31,442 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:18:31,443 INFO L264 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 20 conjunts are in the unsatisfiable core [2020-04-18 07:18:31,444 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:18:31,513 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:18:31,697 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:18:31,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:31,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:18:31,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 16] total 27 [2020-04-18 07:18:31,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373169363] [2020-04-18 07:18:31,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-04-18 07:18:31,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:18:31,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-04-18 07:18:31,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=626, Unknown=0, NotChecked=0, Total=702 [2020-04-18 07:18:31,740 INFO L87 Difference]: Start difference. First operand 52904 states and 221623 transitions. Second operand 27 states. [2020-04-18 07:18:38,538 WARN L192 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-04-18 07:18:41,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:18:41,822 INFO L93 Difference]: Finished difference Result 182666 states and 732877 transitions. [2020-04-18 07:18:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2020-04-18 07:18:41,822 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 49 [2020-04-18 07:18:41,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 07:18:43,151 INFO L225 Difference]: With dead ends: 182666 [2020-04-18 07:18:43,151 INFO L226 Difference]: Without dead ends: 177218 [2020-04-18 07:18:43,153 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11402 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=3983, Invalid=26467, Unknown=0, NotChecked=0, Total=30450 [2020-04-18 07:18:43,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177218 states. [2020-04-18 07:18:44,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177218 to 52902. [2020-04-18 07:18:44,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52902 states. [2020-04-18 07:18:46,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52902 states to 52902 states and 221617 transitions. [2020-04-18 07:18:46,056 INFO L78 Accepts]: Start accepts. Automaton has 52902 states and 221617 transitions. Word has length 49 [2020-04-18 07:18:46,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 07:18:46,056 INFO L479 AbstractCegarLoop]: Abstraction has 52902 states and 221617 transitions. [2020-04-18 07:18:46,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-04-18 07:18:46,056 INFO L276 IsEmpty]: Start isEmpty. Operand 52902 states and 221617 transitions. [2020-04-18 07:18:46,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 07:18:46,063 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 07:18:46,063 INFO L425 BasicCegarLoop]: trace histogram [2, 2, 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 07:18:46,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:18:46,264 INFO L427 AbstractCegarLoop]: === Iteration 14 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 07:18:46,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 07:18:46,265 INFO L82 PathProgramCache]: Analyzing trace with hash 825886448, now seen corresponding path program 11 times [2020-04-18 07:18:46,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 07:18:46,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848454451] [2020-04-18 07:18:46,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 07:18:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 07:18:46,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:46,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848454451] [2020-04-18 07:18:46,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827166508] [2020-04-18 07:18:46,389 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-04-18 07:18:46,468 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-04-18 07:18:46,468 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-04-18 07:18:46,469 INFO L264 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 15 conjunts are in the unsatisfiable core [2020-04-18 07:18:46,469 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-04-18 07:18:46,597 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2020-04-18 07:18:46,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 07:18:46,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-04-18 07:18:46,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2020-04-18 07:18:46,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127980406] [2020-04-18 07:18:46,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-04-18 07:18:46,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 07:18:46,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-04-18 07:18:46,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2020-04-18 07:18:46,628 INFO L87 Difference]: Start difference. First operand 52902 states and 221617 transitions. Second operand 24 states. [2020-04-18 07:18:52,160 WARN L192 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-04-18 07:18:54,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 07:18:54,126 INFO L93 Difference]: Finished difference Result 225786 states and 906282 transitions. [2020-04-18 07:18:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2020-04-18 07:18:54,126 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 49 [2020-04-18 07:18:54,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2020-04-18 07:18:59,053 INFO L225 Difference]: With dead ends: 225786 [2020-04-18 07:18:59,054 INFO L226 Difference]: Without dead ends: 216306 [2020-04-18 07:18:59,055 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12889 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4149, Invalid=28431, Unknown=0, NotChecked=0, Total=32580 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown