/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-VariableLbe.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 02:26:37,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 02:26:37,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 02:26:37,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 02:26:37,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 02:26:37,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 02:26:37,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 02:26:37,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 02:26:37,798 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 02:26:37,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 02:26:37,803 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 02:26:37,805 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 02:26:37,805 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 02:26:37,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 02:26:37,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 02:26:37,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 02:26:37,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 02:26:37,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 02:26:37,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 02:26:37,818 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 02:26:37,823 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 02:26:37,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 02:26:37,827 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 02:26:37,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 02:26:37,830 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 02:26:37,830 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 02:26:37,830 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 02:26:37,832 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 02:26:37,833 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 02:26:37,834 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 02:26:37,834 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 02:26:37,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 02:26:37,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 02:26:37,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 02:26:37,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 02:26:37,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 02:26:37,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 02:26:37,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 02:26:37,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 02:26:37,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 02:26:37,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 02:26:37,843 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-VariableLbe.epf [2020-04-18 02:26:37,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 02:26:37,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 02:26:37,868 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 02:26:37,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 02:26:37,869 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 02:26:37,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 02:26:37,870 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 02:26:37,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 02:26:37,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 02:26:37,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 02:26:37,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 02:26:37,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 02:26:37,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 02:26:37,872 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 02:26:37,872 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 02:26:37,873 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 02:26:37,873 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 02:26:37,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 02:26:37,874 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 02:26:37,874 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 02:26:37,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 02:26:37,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 02:26:37,875 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 02:26:37,875 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 02:26:37,875 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 02:26:37,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-18 02:26:37,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 02:26:37,876 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-04-18 02:26:37,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 02:26:37,876 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 02:26:38,180 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 02:26:38,200 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 02:26:38,203 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 02:26:38,205 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 02:26:38,205 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 02:26:38,206 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-04-18 02:26:38,275 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c205e204e/d8557e4f15a34b508cc83648dd075576/FLAG1fe1a3711 [2020-04-18 02:26:38,817 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 02:26:38,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-04-18 02:26:38,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c205e204e/d8557e4f15a34b508cc83648dd075576/FLAG1fe1a3711 [2020-04-18 02:26:39,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c205e204e/d8557e4f15a34b508cc83648dd075576 [2020-04-18 02:26:39,110 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 02:26:39,133 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 02:26:39,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 02:26:39,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 02:26:39,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 02:26:39,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:26:39" (1/1) ... [2020-04-18 02:26:39,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e008898 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:26:39, skipping insertion in model container [2020-04-18 02:26:39,142 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 02:26:39" (1/1) ... [2020-04-18 02:26:39,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 02:26:39,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 02:26:39,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:26:39,683 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 02:26:39,738 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 02:26:39,808 INFO L208 MainTranslator]: Completed translation [2020-04-18 02:26:39,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:26:39 WrapperNode [2020-04-18 02:26:39,809 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 02:26:39,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 02:26:39,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 02:26:39,810 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 02:26:39,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:26:39" (1/1) ... [2020-04-18 02:26:39,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:26:39" (1/1) ... [2020-04-18 02:26:39,857 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 02:26:39,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 02:26:39,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 02:26:39,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 02:26:39,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:26:39" (1/1) ... [2020-04-18 02:26:39,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:26:39" (1/1) ... [2020-04-18 02:26:39,870 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:26:39" (1/1) ... [2020-04-18 02:26:39,870 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:26:39" (1/1) ... [2020-04-18 02:26:39,876 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:26:39" (1/1) ... [2020-04-18 02:26:39,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:26:39" (1/1) ... [2020-04-18 02:26:39,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:26:39" (1/1) ... [2020-04-18 02:26:39,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 02:26:39,883 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 02:26:39,883 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 02:26:39,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 02:26:39,884 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:26:39" (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 02:26:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 02:26:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 02:26:39,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 02:26:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 02:26:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 02:26:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 02:26:39,943 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 02:26:39,943 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 02:26:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 02:26:39,944 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 02:26:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 02:26:39,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 02:26:39,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 02:26:39,946 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 02:26:40,330 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 02:26:40,331 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 02:26:40,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:26:40 BoogieIcfgContainer [2020-04-18 02:26:40,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 02:26:40,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 02:26:40,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 02:26:40,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 02:26:40,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 02:26:39" (1/3) ... [2020-04-18 02:26:40,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4163a25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:26:40, skipping insertion in model container [2020-04-18 02:26:40,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 02:26:39" (2/3) ... [2020-04-18 02:26:40,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4163a25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 02:26:40, skipping insertion in model container [2020-04-18 02:26:40,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 02:26:40" (3/3) ... [2020-04-18 02:26:40,345 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-04-18 02:26:40,354 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 02:26:40,355 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 02:26:40,361 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 02:26:40,362 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 02:26:40,391 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,391 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,391 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,392 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,392 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,392 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,393 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,393 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,393 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,394 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,394 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,394 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,395 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,395 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,395 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,395 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,396 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,396 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,400 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,400 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,401 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,401 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,409 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,409 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,409 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,410 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,412 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,413 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,413 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,413 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 02:26:40,426 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-18 02:26:40,443 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 02:26:40,443 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 02:26:40,443 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 02:26:40,444 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 02:26:40,444 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 02:26:40,444 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 02:26:40,444 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 02:26:40,444 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 02:26:40,459 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-04-18 02:26:40,461 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-04-18 02:26:40,502 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-04-18 02:26:40,503 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:26:40,507 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 02:26:40,510 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-04-18 02:26:40,530 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-04-18 02:26:40,530 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-18 02:26:40,531 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-04-18 02:26:40,533 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-04-18 02:26:40,534 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-04-18 02:26:41,868 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-04-18 02:26:41,955 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1818 [2020-04-18 02:26:41,955 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-04-18 02:26:41,959 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-04-18 02:26:41,977 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-04-18 02:26:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-04-18 02:26:41,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-18 02:26:41,987 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:26:41,988 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:26:41,988 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:26:41,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:26:41,994 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-04-18 02:26:42,003 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:26:42,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912529664] [2020-04-18 02:26:42,004 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:26:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:26:42,221 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 02:26:42,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912529664] [2020-04-18 02:26:42,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:26:42,224 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:26:42,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858404474] [2020-04-18 02:26:42,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:26:42,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:26:42,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:26:42,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:26:42,249 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-04-18 02:26:42,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:26:42,311 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-04-18 02:26:42,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:26:42,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-18 02:26:42,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:26:42,350 INFO L225 Difference]: With dead ends: 220 [2020-04-18 02:26:42,351 INFO L226 Difference]: Without dead ends: 172 [2020-04-18 02:26:42,354 INFO L678 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 [2020-04-18 02:26:42,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-04-18 02:26:42,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-04-18 02:26:42,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-04-18 02:26:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-04-18 02:26:42,421 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-04-18 02:26:42,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:26:42,423 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-04-18 02:26:42,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:26:42,423 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-04-18 02:26:42,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-18 02:26:42,425 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:26:42,425 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:26:42,425 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:26:42,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:26:42,426 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-04-18 02:26:42,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:26:42,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990188124] [2020-04-18 02:26:42,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:26:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:26:42,522 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 02:26:42,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990188124] [2020-04-18 02:26:42,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:26:42,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:26:42,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180966292] [2020-04-18 02:26:42,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:26:42,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:26:42,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:26:42,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:26:42,526 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-04-18 02:26:42,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:26:42,543 INFO L93 Difference]: Finished difference Result 166 states and 438 transitions. [2020-04-18 02:26:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:26:42,544 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-04-18 02:26:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:26:42,546 INFO L225 Difference]: With dead ends: 166 [2020-04-18 02:26:42,546 INFO L226 Difference]: Without dead ends: 166 [2020-04-18 02:26:42,547 INFO L678 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 [2020-04-18 02:26:42,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-04-18 02:26:42,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-04-18 02:26:42,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-04-18 02:26:42,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 438 transitions. [2020-04-18 02:26:42,566 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 438 transitions. Word has length 9 [2020-04-18 02:26:42,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:26:42,566 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 438 transitions. [2020-04-18 02:26:42,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:26:42,567 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 438 transitions. [2020-04-18 02:26:42,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-04-18 02:26:42,568 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:26:42,568 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:26:42,568 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:26:42,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:26:42,569 INFO L82 PathProgramCache]: Analyzing trace with hash -650605017, now seen corresponding path program 1 times [2020-04-18 02:26:42,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:26:42,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719631202] [2020-04-18 02:26:42,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:26:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:26:42,637 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 02:26:42,638 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719631202] [2020-04-18 02:26:42,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:26:42,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-18 02:26:42,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003637693] [2020-04-18 02:26:42,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:26:42,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:26:42,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:26:42,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:26:42,639 INFO L87 Difference]: Start difference. First operand 166 states and 438 transitions. Second operand 3 states. [2020-04-18 02:26:42,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:26:42,648 INFO L93 Difference]: Finished difference Result 158 states and 412 transitions. [2020-04-18 02:26:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:26:42,650 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-04-18 02:26:42,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:26:42,652 INFO L225 Difference]: With dead ends: 158 [2020-04-18 02:26:42,652 INFO L226 Difference]: Without dead ends: 158 [2020-04-18 02:26:42,653 INFO L678 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 [2020-04-18 02:26:42,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-04-18 02:26:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-04-18 02:26:42,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-04-18 02:26:42,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 412 transitions. [2020-04-18 02:26:42,666 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 412 transitions. Word has length 10 [2020-04-18 02:26:42,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:26:42,666 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 412 transitions. [2020-04-18 02:26:42,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:26:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 412 transitions. [2020-04-18 02:26:42,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:26:42,668 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:26:42,668 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:26:42,668 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:26:42,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:26:42,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1305380691, now seen corresponding path program 1 times [2020-04-18 02:26:42,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:26:42,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539789688] [2020-04-18 02:26:42,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:26:42,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:26:42,715 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 02:26:42,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539789688] [2020-04-18 02:26:42,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:26:42,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:26:42,717 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005104763] [2020-04-18 02:26:42,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:26:42,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:26:42,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:26:42,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:26:42,718 INFO L87 Difference]: Start difference. First operand 158 states and 412 transitions. Second operand 4 states. [2020-04-18 02:26:42,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:26:42,740 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-04-18 02:26:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-18 02:26:42,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:26:42,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:26:42,742 INFO L225 Difference]: With dead ends: 218 [2020-04-18 02:26:42,742 INFO L226 Difference]: Without dead ends: 146 [2020-04-18 02:26:42,743 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:26:42,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-18 02:26:42,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-18 02:26:42,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-18 02:26:42,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-04-18 02:26:42,754 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 11 [2020-04-18 02:26:42,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:26:42,754 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-04-18 02:26:42,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:26:42,755 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-04-18 02:26:42,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-18 02:26:42,756 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:26:42,756 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:26:42,756 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:26:42,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:26:42,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 2 times [2020-04-18 02:26:42,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:26:42,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622475555] [2020-04-18 02:26:42,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:26:42,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:26:42,848 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 02:26:42,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622475555] [2020-04-18 02:26:42,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:26:42,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:26:42,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91093141] [2020-04-18 02:26:42,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:26:42,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:26:42,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:26:42,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:26:42,851 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 4 states. [2020-04-18 02:26:42,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:26:42,903 INFO L93 Difference]: Finished difference Result 167 states and 388 transitions. [2020-04-18 02:26:42,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:26:42,904 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-04-18 02:26:42,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:26:42,905 INFO L225 Difference]: With dead ends: 167 [2020-04-18 02:26:42,905 INFO L226 Difference]: Without dead ends: 125 [2020-04-18 02:26:42,905 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:26:42,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-04-18 02:26:42,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2020-04-18 02:26:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-04-18 02:26:42,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 288 transitions. [2020-04-18 02:26:42,912 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 288 transitions. Word has length 11 [2020-04-18 02:26:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:26:42,913 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 288 transitions. [2020-04-18 02:26:42,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:26:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 288 transitions. [2020-04-18 02:26:42,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-18 02:26:42,914 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:26:42,914 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:26:42,915 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:26:42,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:26:42,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1819207960, now seen corresponding path program 1 times [2020-04-18 02:26:42,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:26:42,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542014739] [2020-04-18 02:26:42,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:26:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:26:42,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:26:42,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542014739] [2020-04-18 02:26:42,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:26:42,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:26:42,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716766139] [2020-04-18 02:26:42,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-18 02:26:42,972 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:26:42,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-18 02:26:42,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:26:42,972 INFO L87 Difference]: Start difference. First operand 125 states and 288 transitions. Second operand 5 states. [2020-04-18 02:26:43,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:26:43,038 INFO L93 Difference]: Finished difference Result 121 states and 257 transitions. [2020-04-18 02:26:43,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:26:43,039 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-04-18 02:26:43,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:26:43,039 INFO L225 Difference]: With dead ends: 121 [2020-04-18 02:26:43,040 INFO L226 Difference]: Without dead ends: 93 [2020-04-18 02:26:43,040 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:26:43,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-04-18 02:26:43,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-04-18 02:26:43,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-04-18 02:26:43,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-04-18 02:26:43,050 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 12 [2020-04-18 02:26:43,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:26:43,050 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-04-18 02:26:43,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-18 02:26:43,051 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-04-18 02:26:43,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-18 02:26:43,052 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:26:43,052 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:26:43,052 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:26:43,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:26:43,052 INFO L82 PathProgramCache]: Analyzing trace with hash 589619789, now seen corresponding path program 1 times [2020-04-18 02:26:43,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:26:43,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277222746] [2020-04-18 02:26:43,053 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:26:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:26:43,113 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 02:26:43,113 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277222746] [2020-04-18 02:26:43,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:26:43,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:26:43,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919010540] [2020-04-18 02:26:43,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:26:43,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:26:43,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:26:43,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:26:43,115 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 3 states. [2020-04-18 02:26:43,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:26:43,128 INFO L93 Difference]: Finished difference Result 110 states and 218 transitions. [2020-04-18 02:26:43,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:26:43,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-04-18 02:26:43,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:26:43,130 INFO L225 Difference]: With dead ends: 110 [2020-04-18 02:26:43,130 INFO L226 Difference]: Without dead ends: 88 [2020-04-18 02:26:43,130 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:26:43,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-04-18 02:26:43,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-04-18 02:26:43,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-04-18 02:26:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2020-04-18 02:26:43,135 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 13 [2020-04-18 02:26:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:26:43,136 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2020-04-18 02:26:43,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:26:43,140 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2020-04-18 02:26:43,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:26:43,141 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:26:43,141 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:26:43,141 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:26:43,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:26:43,142 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 1 times [2020-04-18 02:26:43,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:26:43,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369569185] [2020-04-18 02:26:43,142 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:26:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:26:43,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 02:26:43,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369569185] [2020-04-18 02:26:43,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:26:43,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-18 02:26:43,198 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527878910] [2020-04-18 02:26:43,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-18 02:26:43,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:26:43,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-18 02:26:43,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:26:43,199 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand 3 states. [2020-04-18 02:26:43,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:26:43,215 INFO L93 Difference]: Finished difference Result 104 states and 195 transitions. [2020-04-18 02:26:43,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-18 02:26:43,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-04-18 02:26:43,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:26:43,217 INFO L225 Difference]: With dead ends: 104 [2020-04-18 02:26:43,217 INFO L226 Difference]: Without dead ends: 66 [2020-04-18 02:26:43,218 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-18 02:26:43,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-04-18 02:26:43,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-04-18 02:26:43,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-04-18 02:26:43,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-04-18 02:26:43,220 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 14 [2020-04-18 02:26:43,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:26:43,220 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-04-18 02:26:43,221 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-18 02:26:43,221 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-04-18 02:26:43,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:26:43,222 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:26:43,222 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:26:43,222 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:26:43,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:26:43,223 INFO L82 PathProgramCache]: Analyzing trace with hash -610616562, now seen corresponding path program 2 times [2020-04-18 02:26:43,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:26:43,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425500076] [2020-04-18 02:26:43,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:26:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:26:43,304 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 02:26:43,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425500076] [2020-04-18 02:26:43,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:26:43,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-18 02:26:43,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683384928] [2020-04-18 02:26:43,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-18 02:26:43,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:26:43,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-18 02:26:43,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-18 02:26:43,308 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 4 states. [2020-04-18 02:26:43,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:26:43,340 INFO L93 Difference]: Finished difference Result 71 states and 116 transitions. [2020-04-18 02:26:43,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-18 02:26:43,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-04-18 02:26:43,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:26:43,341 INFO L225 Difference]: With dead ends: 71 [2020-04-18 02:26:43,342 INFO L226 Difference]: Without dead ends: 64 [2020-04-18 02:26:43,342 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-18 02:26:43,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-04-18 02:26:43,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-04-18 02:26:43,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-04-18 02:26:43,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 106 transitions. [2020-04-18 02:26:43,345 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 106 transitions. Word has length 14 [2020-04-18 02:26:43,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:26:43,345 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 106 transitions. [2020-04-18 02:26:43,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-18 02:26:43,346 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 106 transitions. [2020-04-18 02:26:43,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-18 02:26:43,349 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 02:26:43,349 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 02:26:43,349 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 02:26:43,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 02:26:43,350 INFO L82 PathProgramCache]: Analyzing trace with hash -375565572, now seen corresponding path program 3 times [2020-04-18 02:26:43,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 02:26:43,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570229583] [2020-04-18 02:26:43,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 02:26:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 02:26:43,422 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 02:26:43,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570229583] [2020-04-18 02:26:43,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 02:26:43,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-18 02:26:43,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93025733] [2020-04-18 02:26:43,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-18 02:26:43,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-18 02:26:43,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 02:26:43,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-18 02:26:43,425 INFO L87 Difference]: Start difference. First operand 63 states and 106 transitions. Second operand 6 states. [2020-04-18 02:26:43,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 02:26:43,462 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-04-18 02:26:43,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-18 02:26:43,463 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-04-18 02:26:43,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 02:26:43,463 INFO L225 Difference]: With dead ends: 58 [2020-04-18 02:26:43,463 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 02:26:43,464 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-04-18 02:26:43,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 02:26:43,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 02:26:43,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 02:26:43,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 02:26:43,465 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-04-18 02:26:43,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 02:26:43,466 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 02:26:43,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-18 02:26:43,466 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 02:26:43,466 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 02:26:43,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 02:26:43 BasicIcfg [2020-04-18 02:26:43,471 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 02:26:43,474 INFO L168 Benchmark]: Toolchain (without parser) took 4360.67 ms. Allocated memory was 146.3 MB in the beginning and 245.4 MB in the end (delta: 99.1 MB). Free memory was 102.7 MB in the beginning and 193.9 MB in the end (delta: -91.3 MB). Peak memory consumption was 7.8 MB. Max. memory is 7.1 GB. [2020-04-18 02:26:43,475 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-04-18 02:26:43,481 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.40 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 159.1 MB in the end (delta: -58.3 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-04-18 02:26:43,483 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.75 ms. Allocated memory is still 203.4 MB. Free memory was 159.1 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 02:26:43,485 INFO L168 Benchmark]: Boogie Preprocessor took 25.80 ms. Allocated memory is still 203.4 MB. Free memory was 157.2 MB in the beginning and 155.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-04-18 02:26:43,486 INFO L168 Benchmark]: RCFGBuilder took 451.68 ms. Allocated memory is still 203.4 MB. Free memory was 155.8 MB in the beginning and 134.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-04-18 02:26:43,491 INFO L168 Benchmark]: TraceAbstraction took 3134.48 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 133.5 MB in the beginning and 193.9 MB in the end (delta: -60.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-04-18 02:26:43,502 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.40 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 100.8 MB in the beginning and 159.1 MB in the end (delta: -58.3 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.75 ms. Allocated memory is still 203.4 MB. Free memory was 159.1 MB in the beginning and 157.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.80 ms. Allocated memory is still 203.4 MB. Free memory was 157.2 MB in the beginning and 155.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.68 ms. Allocated memory is still 203.4 MB. Free memory was 155.8 MB in the beginning and 134.1 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3134.48 ms. Allocated memory was 203.4 MB in the beginning and 245.4 MB in the end (delta: 41.9 MB). Free memory was 133.5 MB in the beginning and 193.9 MB in the end (delta: -60.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.4s, 75 ProgramPointsBefore, 30 ProgramPointsAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 576 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1818 CheckedPairsTotal, 52 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 179 SDtfs, 120 SDslu, 194 SDs, 0 SdLazy, 99 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred 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, 10 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 106 ConstructedInterpolants, 0 QuantifiedInterpolants, 3056 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...