/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:34:24,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:34:24,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:34:24,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:34:24,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:34:24,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:34:24,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:34:24,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:34:24,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:34:24,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:34:24,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:34:24,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:34:24,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:34:24,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:34:24,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:34:24,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:34:24,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:34:24,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:34:24,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:34:24,889 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:34:24,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:34:24,892 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:34:24,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:34:24,895 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:34:24,908 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:34:24,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:34:24,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:34:24,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:34:24,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:34:24,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:34:24,913 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:34:24,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:34:24,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:34:24,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:34:24,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:34:24,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:34:24,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:34:24,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:34:24,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:34:24,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:34:24,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:34:24,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:34:24,964 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:34:24,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:34:24,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:34:24,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:34:24,967 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:34:24,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:34:24,967 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:34:24,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:34:24,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:34:24,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:34:24,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:34:24,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:34:24,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:34:24,970 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:34:24,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:34:24,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:34:24,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:34:24,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:34:24,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:34:24,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:34:24,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:34:24,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:34:24,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:34:24,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:34:24,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:34:24,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:34:24,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:34:24,973 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:34:24,973 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:34:24,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:34:24,973 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:34:25,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:34:25,302 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:34:25,306 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:34:25,308 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:34:25,308 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:34:25,309 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-10-16 13:34:25,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b60aea0b9/ef0cdf229ce742cabb15bcb136ea6073/FLAGc1581d831 [2020-10-16 13:34:25,918 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:34:25,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe001_tso.opt.i [2020-10-16 13:34:25,934 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b60aea0b9/ef0cdf229ce742cabb15bcb136ea6073/FLAGc1581d831 [2020-10-16 13:34:26,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b60aea0b9/ef0cdf229ce742cabb15bcb136ea6073 [2020-10-16 13:34:26,249 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:34:26,251 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:34:26,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:34:26,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:34:26,256 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:34:26,257 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:34:26" (1/1) ... [2020-10-16 13:34:26,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@550c82a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:26, skipping insertion in model container [2020-10-16 13:34:26,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:34:26" (1/1) ... [2020-10-16 13:34:26,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:34:26,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:34:26,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:34:26,865 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:34:26,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:34:27,052 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:34:27,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:27 WrapperNode [2020-10-16 13:34:27,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:34:27,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:34:27,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:34:27,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:34:27,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:27" (1/1) ... [2020-10-16 13:34:27,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:27" (1/1) ... [2020-10-16 13:34:27,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:34:27,116 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:34:27,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:34:27,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:34:27,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:27" (1/1) ... [2020-10-16 13:34:27,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:27" (1/1) ... [2020-10-16 13:34:27,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:27" (1/1) ... [2020-10-16 13:34:27,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:27" (1/1) ... [2020-10-16 13:34:27,134 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:27" (1/1) ... [2020-10-16 13:34:27,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:27" (1/1) ... [2020-10-16 13:34:27,139 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:27" (1/1) ... [2020-10-16 13:34:27,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:34:27,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:34:27,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:34:27,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:34:27,144 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:27" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-16 13:34:27,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:34:27,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:34:27,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:34:27,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:34:27,215 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:34:27,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:34:27,215 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:34:27,215 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:34:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:34:27,216 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:34:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:34:27,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:34:27,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:34:27,218 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:34:27,605 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:34:27,606 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:34:27,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:34:27 BoogieIcfgContainer [2020-10-16 13:34:27,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:34:27,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:34:27,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:34:27,614 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:34:27,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:34:26" (1/3) ... [2020-10-16 13:34:27,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d859358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:34:27, skipping insertion in model container [2020-10-16 13:34:27,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:34:27" (2/3) ... [2020-10-16 13:34:27,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d859358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:34:27, skipping insertion in model container [2020-10-16 13:34:27,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:34:27" (3/3) ... [2020-10-16 13:34:27,618 INFO L111 eAbstractionObserver]: Analyzing ICFG safe001_tso.opt.i [2020-10-16 13:34:27,629 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:34:27,630 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:34:27,637 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:34:27,639 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:34:27,673 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,674 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,674 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,675 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,676 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,676 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,676 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,678 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,678 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,678 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,679 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,683 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,683 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,684 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,684 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,693 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,693 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,693 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,694 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,697 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,697 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,697 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:34:27,700 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:34:27,716 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:34:27,739 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:34:27,739 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:34:27,739 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:34:27,740 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:34:27,740 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:34:27,740 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:34:27,740 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:34:27,740 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:34:27,754 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:34:27,755 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 13:34:27,758 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 69 transitions, 153 flow [2020-10-16 13:34:27,760 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-10-16 13:34:27,809 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-10-16 13:34:27,809 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:34:27,815 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:34:27,818 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:34:29,101 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-10-16 13:34:29,244 INFO L132 LiptonReduction]: Checked pairs total: 2581 [2020-10-16 13:34:29,244 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-16 13:34:29,251 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 13:34:29,279 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 13:34:29,281 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 13:34:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:34:29,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:29,291 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:29,291 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:29,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:29,298 INFO L82 PathProgramCache]: Analyzing trace with hash -245765301, now seen corresponding path program 1 times [2020-10-16 13:34:29,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:29,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547418222] [2020-10-16 13:34:29,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:29,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:29,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:34:29,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547418222] [2020-10-16 13:34:29,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:29,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:34:29,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1028485760] [2020-10-16 13:34:29,550 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:29,554 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:29,569 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:34:29,570 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:29,574 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:29,575 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:34:29,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:29,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:34:29,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:34:29,594 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 13:34:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:29,638 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-10-16 13:34:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:34:29,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:34:29,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:29,657 INFO L225 Difference]: With dead ends: 290 [2020-10-16 13:34:29,657 INFO L226 Difference]: Without dead ends: 226 [2020-10-16 13:34:29,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:34:29,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-16 13:34:29,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-10-16 13:34:29,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-10-16 13:34:29,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-10-16 13:34:29,730 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-10-16 13:34:29,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:29,732 INFO L481 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-10-16 13:34:29,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:34:29,732 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-10-16 13:34:29,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-16 13:34:29,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:29,734 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:29,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:34:29,734 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:29,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:29,735 INFO L82 PathProgramCache]: Analyzing trace with hash 956609449, now seen corresponding path program 1 times [2020-10-16 13:34:29,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:29,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008700744] [2020-10-16 13:34:29,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:29,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:29,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:34:29,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008700744] [2020-10-16 13:34:29,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:29,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:34:29,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [973796854] [2020-10-16 13:34:29,821 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:29,822 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:29,826 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-10-16 13:34:29,826 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:29,863 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:29,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:34:29,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:29,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:34:29,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:34:29,866 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-10-16 13:34:29,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:29,879 INFO L93 Difference]: Finished difference Result 212 states and 578 transitions. [2020-10-16 13:34:29,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:34:29,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-10-16 13:34:29,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:29,882 INFO L225 Difference]: With dead ends: 212 [2020-10-16 13:34:29,883 INFO L226 Difference]: Without dead ends: 212 [2020-10-16 13:34:29,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:34:29,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-16 13:34:29,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-10-16 13:34:29,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-16 13:34:29,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 578 transitions. [2020-10-16 13:34:29,908 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 578 transitions. Word has length 9 [2020-10-16 13:34:29,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:29,908 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 578 transitions. [2020-10-16 13:34:29,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:34:29,908 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 578 transitions. [2020-10-16 13:34:29,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:34:29,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:29,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:29,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:34:29,911 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:29,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:29,911 INFO L82 PathProgramCache]: Analyzing trace with hash -409878926, now seen corresponding path program 1 times [2020-10-16 13:34:29,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:29,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762436907] [2020-10-16 13:34:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:29,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:29,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:34:29,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762436907] [2020-10-16 13:34:29,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:29,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:34:29,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [507337280] [2020-10-16 13:34:29,973 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:29,974 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:29,976 INFO L258 McrAutomatonBuilder]: Finished intersection with 17 states and 23 transitions. [2020-10-16 13:34:29,976 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:30,009 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:30,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:34:30,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:30,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:34:30,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:34:30,011 INFO L87 Difference]: Start difference. First operand 212 states and 578 transitions. Second operand 4 states. [2020-10-16 13:34:30,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:30,040 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-16 13:34:30,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:34:30,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 13:34:30,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:30,043 INFO L225 Difference]: With dead ends: 242 [2020-10-16 13:34:30,043 INFO L226 Difference]: Without dead ends: 146 [2020-10-16 13:34:30,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:34:30,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-16 13:34:30,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-16 13:34:30,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-16 13:34:30,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-16 13:34:30,058 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 10 [2020-10-16 13:34:30,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:30,058 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-16 13:34:30,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:34:30,059 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-16 13:34:30,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:34:30,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:30,060 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:30,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:34:30,061 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:30,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:30,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1304596236, now seen corresponding path program 1 times [2020-10-16 13:34:30,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:30,063 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228548613] [2020-10-16 13:34:30,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:30,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:34:30,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228548613] [2020-10-16 13:34:30,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:30,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:34:30,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1082355610] [2020-10-16 13:34:30,111 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:30,112 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:30,114 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-16 13:34:30,114 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:30,138 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:30,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:34:30,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:30,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:34:30,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:34:30,140 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-16 13:34:30,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:30,146 INFO L93 Difference]: Finished difference Result 140 states and 343 transitions. [2020-10-16 13:34:30,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:34:30,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-16 13:34:30,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:30,148 INFO L225 Difference]: With dead ends: 140 [2020-10-16 13:34:30,148 INFO L226 Difference]: Without dead ends: 140 [2020-10-16 13:34:30,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:34:30,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-16 13:34:30,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-16 13:34:30,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 13:34:30,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 343 transitions. [2020-10-16 13:34:30,159 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 343 transitions. Word has length 11 [2020-10-16 13:34:30,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:30,159 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 343 transitions. [2020-10-16 13:34:30,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:34:30,159 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 343 transitions. [2020-10-16 13:34:30,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:34:30,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:30,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:30,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:34:30,161 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:30,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:30,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1352113053, now seen corresponding path program 1 times [2020-10-16 13:34:30,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:30,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897728033] [2020-10-16 13:34:30,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:30,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:34:30,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897728033] [2020-10-16 13:34:30,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:30,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:34:30,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1831071740] [2020-10-16 13:34:30,225 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:30,226 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:30,230 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 47 transitions. [2020-10-16 13:34:30,230 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:30,350 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:30,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:34:30,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:30,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:34:30,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:34:30,352 INFO L87 Difference]: Start difference. First operand 140 states and 343 transitions. Second operand 4 states. [2020-10-16 13:34:30,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:30,378 INFO L93 Difference]: Finished difference Result 200 states and 485 transitions. [2020-10-16 13:34:30,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:34:30,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 13:34:30,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:30,380 INFO L225 Difference]: With dead ends: 200 [2020-10-16 13:34:30,380 INFO L226 Difference]: Without dead ends: 110 [2020-10-16 13:34:30,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:34:30,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-16 13:34:30,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-16 13:34:30,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-16 13:34:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 265 transitions. [2020-10-16 13:34:30,387 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 265 transitions. Word has length 12 [2020-10-16 13:34:30,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:30,388 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 265 transitions. [2020-10-16 13:34:30,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:34:30,388 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 265 transitions. [2020-10-16 13:34:30,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:34:30,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:30,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:30,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:34:30,390 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:30,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:30,390 INFO L82 PathProgramCache]: Analyzing trace with hash -2097233879, now seen corresponding path program 2 times [2020-10-16 13:34:30,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:30,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633253745] [2020-10-16 13:34:30,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:34:30,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633253745] [2020-10-16 13:34:30,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:30,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:34:30,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [597927045] [2020-10-16 13:34:30,427 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:30,428 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:30,431 INFO L258 McrAutomatonBuilder]: Finished intersection with 25 states and 37 transitions. [2020-10-16 13:34:30,432 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:30,458 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:30,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:34:30,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:30,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:34:30,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:34:30,460 INFO L87 Difference]: Start difference. First operand 110 states and 265 transitions. Second operand 4 states. [2020-10-16 13:34:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:30,481 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-10-16 13:34:30,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:34:30,482 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 13:34:30,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:30,483 INFO L225 Difference]: With dead ends: 128 [2020-10-16 13:34:30,483 INFO L226 Difference]: Without dead ends: 68 [2020-10-16 13:34:30,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:34:30,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-16 13:34:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-16 13:34:30,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-16 13:34:30,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-10-16 13:34:30,487 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 12 [2020-10-16 13:34:30,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:30,488 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-10-16 13:34:30,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:34:30,488 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-10-16 13:34:30,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:34:30,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:30,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:30,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:34:30,489 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:30,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:30,490 INFO L82 PathProgramCache]: Analyzing trace with hash 413415217, now seen corresponding path program 1 times [2020-10-16 13:34:30,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:30,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648496642] [2020-10-16 13:34:30,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:30,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:30,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:34:30,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648496642] [2020-10-16 13:34:30,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:30,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:34:30,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2110407232] [2020-10-16 13:34:30,552 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:30,554 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:30,557 INFO L258 McrAutomatonBuilder]: Finished intersection with 23 states and 31 transitions. [2020-10-16 13:34:30,557 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:30,575 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:34:30,599 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:34:30,613 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:34:30,631 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:34:30,642 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:34:30,652 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3724#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:34:30,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:34:30,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:30,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:34:30,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:34:30,653 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 5 states. [2020-10-16 13:34:30,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:30,707 INFO L93 Difference]: Finished difference Result 67 states and 126 transitions. [2020-10-16 13:34:30,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:34:30,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:34:30,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:30,709 INFO L225 Difference]: With dead ends: 67 [2020-10-16 13:34:30,709 INFO L226 Difference]: Without dead ends: 45 [2020-10-16 13:34:30,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:34:30,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-16 13:34:30,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-16 13:34:30,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-16 13:34:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-10-16 13:34:30,713 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 13 [2020-10-16 13:34:30,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:30,713 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-10-16 13:34:30,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:34:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-10-16 13:34:30,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:34:30,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:30,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:30,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:34:30,715 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:30,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:30,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1126720068, now seen corresponding path program 1 times [2020-10-16 13:34:30,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:30,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384182931] [2020-10-16 13:34:30,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:30,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:30,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:34:30,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384182931] [2020-10-16 13:34:30,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:30,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:34:30,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [749464944] [2020-10-16 13:34:30,808 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:30,810 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:30,815 INFO L258 McrAutomatonBuilder]: Finished intersection with 27 states and 37 transitions. [2020-10-16 13:34:30,815 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:30,876 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:34:30,886 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3892#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:34:30,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:34:30,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:30,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:34:30,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:34:30,888 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 7 states. [2020-10-16 13:34:30,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:30,949 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-10-16 13:34:30,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:34:30,949 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 13:34:30,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:30,950 INFO L225 Difference]: With dead ends: 42 [2020-10-16 13:34:30,950 INFO L226 Difference]: Without dead ends: 36 [2020-10-16 13:34:30,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:34:30,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-16 13:34:30,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-16 13:34:30,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-16 13:34:30,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-10-16 13:34:30,953 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-10-16 13:34:30,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:30,954 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-10-16 13:34:30,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:34:30,954 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-10-16 13:34:30,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:34:30,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:34:30,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:34:30,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:34:30,956 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:34:30,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:34:30,956 INFO L82 PathProgramCache]: Analyzing trace with hash 392863110, now seen corresponding path program 1 times [2020-10-16 13:34:30,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:34:30,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066085232] [2020-10-16 13:34:30,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:34:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:34:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:34:31,006 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066085232] [2020-10-16 13:34:31,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:34:31,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:34:31,007 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [709908326] [2020-10-16 13:34:31,007 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:34:31,011 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:34:31,015 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 37 transitions. [2020-10-16 13:34:31,016 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:34:31,019 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:34:31,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:34:31,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:34:31,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:34:31,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:34:31,020 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 3 states. [2020-10-16 13:34:31,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:34:31,028 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-10-16 13:34:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:34:31,029 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-10-16 13:34:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:34:31,029 INFO L225 Difference]: With dead ends: 35 [2020-10-16 13:34:31,029 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:34:31,030 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:34:31,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:34:31,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:34:31,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:34:31,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:34:31,031 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 13:34:31,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:34:31,032 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:34:31,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:34:31,032 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:34:31,032 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:34:31,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:34:31,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:34:31 BasicIcfg [2020-10-16 13:34:31,036 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:34:31,040 INFO L168 Benchmark]: Toolchain (without parser) took 4787.60 ms. Allocated memory was 147.3 MB in the beginning and 245.4 MB in the end (delta: 98.0 MB). Free memory was 102.1 MB in the beginning and 113.7 MB in the end (delta: -11.7 MB). Peak memory consumption was 86.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:34:31,041 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 13:34:31,042 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.66 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 101.8 MB in the beginning and 161.7 MB in the end (delta: -59.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:34:31,043 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.77 ms. Allocated memory is still 203.9 MB. Free memory was 161.7 MB in the beginning and 159.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:34:31,044 INFO L168 Benchmark]: Boogie Preprocessor took 26.95 ms. Allocated memory is still 203.9 MB. Free memory was 159.1 MB in the beginning and 157.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:34:31,045 INFO L168 Benchmark]: RCFGBuilder took 465.81 ms. Allocated memory is still 203.9 MB. Free memory was 157.8 MB in the beginning and 135.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:34:31,045 INFO L168 Benchmark]: TraceAbstraction took 3426.25 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 135.3 MB in the beginning and 113.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. [2020-10-16 13:34:31,050 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 801.66 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 101.8 MB in the beginning and 161.7 MB in the end (delta: -59.8 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.77 ms. Allocated memory is still 203.9 MB. Free memory was 161.7 MB in the beginning and 159.1 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.95 ms. Allocated memory is still 203.9 MB. Free memory was 159.1 MB in the beginning and 157.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 465.81 ms. Allocated memory is still 203.9 MB. Free memory was 157.8 MB in the beginning and 135.3 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3426.25 ms. Allocated memory was 203.9 MB in the beginning and 245.4 MB in the end (delta: 41.4 MB). Free memory was 135.3 MB in the beginning and 113.7 MB in the end (delta: 21.6 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 664 VarBasedMoverChecksPositive, 23 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 34 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 77 PlacesBefore, 31 PlacesAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 58 TotalNumberOfCompositions, 2581 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 158 SDtfs, 102 SDslu, 167 SDs, 0 SdLazy, 102 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 99 GetRequests, 72 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...