/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-SP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-1d1d2b5 [2020-10-22 02:17:26,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-22 02:17:26,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-22 02:17:26,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-22 02:17:26,559 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-22 02:17:26,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-22 02:17:26,562 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-22 02:17:26,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-22 02:17:26,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-22 02:17:26,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-22 02:17:26,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-22 02:17:26,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-22 02:17:26,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-22 02:17:26,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-22 02:17:26,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-22 02:17:26,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-22 02:17:26,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-22 02:17:26,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-22 02:17:26,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-22 02:17:26,576 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-22 02:17:26,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-22 02:17:26,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-22 02:17:26,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-22 02:17:26,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-22 02:17:26,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-22 02:17:26,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-22 02:17:26,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-22 02:17:26,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-22 02:17:26,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-22 02:17:26,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-22 02:17:26,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-22 02:17:26,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-22 02:17:26,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-22 02:17:26,588 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-22 02:17:26,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-22 02:17:26,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-22 02:17:26,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-22 02:17:26,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-22 02:17:26,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-22 02:17:26,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-22 02:17:26,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-22 02:17:26,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-SP.epf [2020-10-22 02:17:26,628 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-22 02:17:26,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-22 02:17:26,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-22 02:17:26,633 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-22 02:17:26,633 INFO L138 SettingsManager]: * Use SBE=true [2020-10-22 02:17:26,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-22 02:17:26,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-22 02:17:26,634 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-22 02:17:26,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-22 02:17:26,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-22 02:17:26,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-22 02:17:26,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-22 02:17:26,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-22 02:17:26,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-22 02:17:26,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-22 02:17:26,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-22 02:17:26,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-22 02:17:26,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-22 02:17:26,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-22 02:17:26,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-22 02:17:26,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-22 02:17:26,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-22 02:17:26,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-22 02:17:26,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-22 02:17:26,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-22 02:17:26,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-22 02:17:26,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-22 02:17:26,639 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-22 02:17:26,640 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-22 02:17:26,640 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-22 02:17:26,640 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-22 02:17:26,979 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-22 02:17:26,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-22 02:17:27,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-22 02:17:27,005 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-22 02:17:27,005 INFO L275 PluginConnector]: CDTParser initialized [2020-10-22 02:17:27,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-10-22 02:17:27,080 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4f5db35/71960b83b8d648518a42d3161d3bdc9c/FLAGfa42de796 [2020-10-22 02:17:27,626 INFO L306 CDTParser]: Found 1 translation units. [2020-10-22 02:17:27,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe023_tso.oepc.i [2020-10-22 02:17:27,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4f5db35/71960b83b8d648518a42d3161d3bdc9c/FLAGfa42de796 [2020-10-22 02:17:27,901 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4f5db35/71960b83b8d648518a42d3161d3bdc9c [2020-10-22 02:17:27,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-22 02:17:27,918 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-22 02:17:27,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-22 02:17:27,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-22 02:17:27,923 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-22 02:17:27,924 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:17:27" (1/1) ... [2020-10-22 02:17:27,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@745ca6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:17:27, skipping insertion in model container [2020-10-22 02:17:27,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 02:17:27" (1/1) ... [2020-10-22 02:17:27,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-22 02:17:27,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-22 02:17:28,525 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:17:28,538 INFO L203 MainTranslator]: Completed pre-run [2020-10-22 02:17:28,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-22 02:17:28,712 INFO L208 MainTranslator]: Completed translation [2020-10-22 02:17:28,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:17:28 WrapperNode [2020-10-22 02:17:28,713 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-22 02:17:28,714 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-22 02:17:28,714 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-22 02:17:28,714 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-22 02:17:28,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:17:28" (1/1) ... [2020-10-22 02:17:28,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:17:28" (1/1) ... [2020-10-22 02:17:28,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-22 02:17:28,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-22 02:17:28,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-22 02:17:28,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-22 02:17:28,768 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:17:28" (1/1) ... [2020-10-22 02:17:28,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:17:28" (1/1) ... [2020-10-22 02:17:28,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:17:28" (1/1) ... [2020-10-22 02:17:28,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:17:28" (1/1) ... [2020-10-22 02:17:28,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:17:28" (1/1) ... [2020-10-22 02:17:28,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:17:28" (1/1) ... [2020-10-22 02:17:28,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:17:28" (1/1) ... [2020-10-22 02:17:28,787 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-22 02:17:28,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-22 02:17:28,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-22 02:17:28,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-22 02:17:28,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:17:28" (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 [2020-10-22 02:17:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-22 02:17:28,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-22 02:17:28,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-22 02:17:28,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-22 02:17:28,858 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-22 02:17:28,859 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-22 02:17:28,859 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-22 02:17:28,859 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-22 02:17:28,860 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-22 02:17:28,860 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-22 02:17:28,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-22 02:17:28,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-22 02:17:28,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-22 02:17:28,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-22 02:17:28,862 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-22 02:17:29,266 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-22 02:17:29,266 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-22 02:17:29,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:17:29 BoogieIcfgContainer [2020-10-22 02:17:29,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-22 02:17:29,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-22 02:17:29,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-22 02:17:29,275 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-22 02:17:29,275 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 02:17:27" (1/3) ... [2020-10-22 02:17:29,276 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3090d420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:17:29, skipping insertion in model container [2020-10-22 02:17:29,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 02:17:28" (2/3) ... [2020-10-22 02:17:29,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3090d420 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 02:17:29, skipping insertion in model container [2020-10-22 02:17:29,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 02:17:29" (3/3) ... [2020-10-22 02:17:29,279 INFO L111 eAbstractionObserver]: Analyzing ICFG safe023_tso.oepc.i [2020-10-22 02:17:29,291 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-22 02:17:29,291 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-22 02:17:29,300 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-22 02:17:29,301 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-22 02:17:29,331 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,332 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,332 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,332 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,333 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,333 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,334 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,334 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,334 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,335 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,335 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,335 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,336 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,336 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,336 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,336 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,337 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,337 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,341 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,342 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,342 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,342 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,351 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,351 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,351 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,352 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,361 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,362 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-22 02:17:29,364 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-22 02:17:29,379 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-22 02:17:29,401 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-22 02:17:29,401 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-22 02:17:29,401 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-22 02:17:29,402 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-22 02:17:29,402 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-22 02:17:29,402 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-22 02:17:29,402 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-22 02:17:29,402 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-22 02:17:29,417 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-22 02:17:29,418 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-22 02:17:29,421 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-10-22 02:17:29,423 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-10-22 02:17:29,472 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-10-22 02:17:29,473 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-22 02:17:29,478 INFO L80 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-10-22 02:17:29,482 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-10-22 02:17:31,211 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-10-22 02:17:31,385 INFO L131 LiptonReduction]: Checked pairs total: 2926 [2020-10-22 02:17:31,386 INFO L133 LiptonReduction]: Total number of compositions: 72 [2020-10-22 02:17:31,393 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-22 02:17:31,420 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-22 02:17:31,422 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-22 02:17:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-22 02:17:31,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:17:31,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:17:31,433 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:17:31,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:17:31,439 INFO L82 PathProgramCache]: Analyzing trace with hash -1098074663, now seen corresponding path program 1 times [2020-10-22 02:17:31,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:17:31,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666206496] [2020-10-22 02:17:31,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:17:31,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:17:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:17:31,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666206496] [2020-10-22 02:17:31,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:17:31,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:17:31,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [681758741] [2020-10-22 02:17:31,677 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:17:31,680 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:17:31,695 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-22 02:17:31,696 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:17:31,700 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:17:31,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:17:31,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:17:31,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:17:31,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:17:31,720 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-22 02:17:31,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:17:31,759 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-10-22 02:17:31,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:17:31,761 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-22 02:17:31,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:17:31,776 INFO L225 Difference]: With dead ends: 282 [2020-10-22 02:17:31,776 INFO L226 Difference]: Without dead ends: 218 [2020-10-22 02:17:31,777 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 [2020-10-22 02:17:31,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-22 02:17:31,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-22 02:17:31,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-22 02:17:31,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-10-22 02:17:31,846 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-10-22 02:17:31,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:17:31,847 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-10-22 02:17:31,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:17:31,847 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-10-22 02:17:31,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-22 02:17:31,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:17:31,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:17:31,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-22 02:17:31,850 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:17:31,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:17:31,850 INFO L82 PathProgramCache]: Analyzing trace with hash 319392730, now seen corresponding path program 1 times [2020-10-22 02:17:31,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:17:31,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049172850] [2020-10-22 02:17:31,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:17:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:17:31,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:17:31,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049172850] [2020-10-22 02:17:31,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:17:31,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:17:31,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [461965033] [2020-10-22 02:17:31,979 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:17:31,979 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:17:31,981 INFO L252 McrAutomatonBuilder]: Finished intersection with 11 states and 11 transitions. [2020-10-22 02:17:31,982 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:17:32,010 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:17:32,012 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:17:32,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:17:32,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:17:32,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:17:32,013 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-10-22 02:17:32,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:17:32,047 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-10-22 02:17:32,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:17:32,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-22 02:17:32,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:17:32,049 INFO L225 Difference]: With dead ends: 242 [2020-10-22 02:17:32,049 INFO L226 Difference]: Without dead ends: 146 [2020-10-22 02:17:32,050 INFO L677 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 [2020-10-22 02:17:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-22 02:17:32,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-22 02:17:32,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-22 02:17:32,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-10-22 02:17:32,066 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-10-22 02:17:32,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:17:32,066 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-10-22 02:17:32,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:17:32,067 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-10-22 02:17:32,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-22 02:17:32,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:17:32,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:17:32,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-22 02:17:32,069 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:17:32,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:17:32,069 INFO L82 PathProgramCache]: Analyzing trace with hash 266199867, now seen corresponding path program 1 times [2020-10-22 02:17:32,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:17:32,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914967287] [2020-10-22 02:17:32,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:17:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:17:32,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:17:32,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914967287] [2020-10-22 02:17:32,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:17:32,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-22 02:17:32,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [779361504] [2020-10-22 02:17:32,136 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:17:32,137 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:17:32,140 INFO L252 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-22 02:17:32,140 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:17:32,197 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:17:32,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:17:32,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:17:32,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:17:32,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:17:32,198 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-10-22 02:17:32,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:17:32,205 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-10-22 02:17:32,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:17:32,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-10-22 02:17:32,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:17:32,207 INFO L225 Difference]: With dead ends: 134 [2020-10-22 02:17:32,208 INFO L226 Difference]: Without dead ends: 134 [2020-10-22 02:17:32,208 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 [2020-10-22 02:17:32,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-22 02:17:32,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-22 02:17:32,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-22 02:17:32,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-10-22 02:17:32,220 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 11 [2020-10-22 02:17:32,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:17:32,220 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-10-22 02:17:32,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:17:32,221 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-10-22 02:17:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:17:32,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:17:32,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:17:32,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-22 02:17:32,223 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:17:32,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:17:32,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1054826072, now seen corresponding path program 1 times [2020-10-22 02:17:32,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:17:32,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366408545] [2020-10-22 02:17:32,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:17:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:17:32,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:17:32,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366408545] [2020-10-22 02:17:32,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:17:32,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:17:32,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1283649005] [2020-10-22 02:17:32,297 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:17:32,299 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:17:32,305 INFO L252 McrAutomatonBuilder]: Finished intersection with 51 states and 93 transitions. [2020-10-22 02:17:32,305 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:17:32,494 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:17:32,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-22 02:17:32,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:17:32,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-22 02:17:32,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:17:32,495 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 3 states. [2020-10-22 02:17:32,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:17:32,510 INFO L93 Difference]: Finished difference Result 206 states and 495 transitions. [2020-10-22 02:17:32,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-22 02:17:32,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-22 02:17:32,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:17:32,512 INFO L225 Difference]: With dead ends: 206 [2020-10-22 02:17:32,512 INFO L226 Difference]: Without dead ends: 110 [2020-10-22 02:17:32,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-22 02:17:32,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-22 02:17:32,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-22 02:17:32,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-22 02:17:32,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 255 transitions. [2020-10-22 02:17:32,521 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 255 transitions. Word has length 13 [2020-10-22 02:17:32,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:17:32,521 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 255 transitions. [2020-10-22 02:17:32,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-22 02:17:32,522 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 255 transitions. [2020-10-22 02:17:32,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:17:32,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:17:32,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:17:32,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-22 02:17:32,524 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:17:32,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:17:32,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1395741464, now seen corresponding path program 2 times [2020-10-22 02:17:32,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:17:32,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533307762] [2020-10-22 02:17:32,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:17:32,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:17:32,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:17:32,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533307762] [2020-10-22 02:17:32,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:17:32,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:17:32,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [506004947] [2020-10-22 02:17:32,575 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:17:32,577 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:17:32,582 INFO L252 McrAutomatonBuilder]: Finished intersection with 45 states and 76 transitions. [2020-10-22 02:17:32,582 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:17:32,728 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:17:32,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:17:32,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:17:32,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:17:32,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:17:32,729 INFO L87 Difference]: Start difference. First operand 110 states and 255 transitions. Second operand 4 states. [2020-10-22 02:17:32,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:17:32,751 INFO L93 Difference]: Finished difference Result 158 states and 361 transitions. [2020-10-22 02:17:32,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:17:32,752 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-22 02:17:32,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:17:32,753 INFO L225 Difference]: With dead ends: 158 [2020-10-22 02:17:32,753 INFO L226 Difference]: Without dead ends: 86 [2020-10-22 02:17:32,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:17:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-22 02:17:32,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-22 02:17:32,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-22 02:17:32,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 186 transitions. [2020-10-22 02:17:32,759 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 186 transitions. Word has length 13 [2020-10-22 02:17:32,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:17:32,760 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 186 transitions. [2020-10-22 02:17:32,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:17:32,760 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 186 transitions. [2020-10-22 02:17:32,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-22 02:17:32,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:17:32,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:17:32,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-22 02:17:32,762 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:17:32,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:17:32,762 INFO L82 PathProgramCache]: Analyzing trace with hash -698343546, now seen corresponding path program 3 times [2020-10-22 02:17:32,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:17:32,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133606129] [2020-10-22 02:17:32,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:17:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:17:32,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:17:32,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133606129] [2020-10-22 02:17:32,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:17:32,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-22 02:17:32,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [675572505] [2020-10-22 02:17:32,849 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:17:32,851 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:17:32,856 INFO L252 McrAutomatonBuilder]: Finished intersection with 41 states and 64 transitions. [2020-10-22 02:17:32,856 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:17:33,012 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:17:33,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:17:33,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:17:33,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:17:33,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:17:33,014 INFO L87 Difference]: Start difference. First operand 86 states and 186 transitions. Second operand 4 states. [2020-10-22 02:17:33,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:17:33,082 INFO L93 Difference]: Finished difference Result 99 states and 199 transitions. [2020-10-22 02:17:33,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-22 02:17:33,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-22 02:17:33,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:17:33,084 INFO L225 Difference]: With dead ends: 99 [2020-10-22 02:17:33,084 INFO L226 Difference]: Without dead ends: 77 [2020-10-22 02:17:33,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:17:33,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-22 02:17:33,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-22 02:17:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-22 02:17:33,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 156 transitions. [2020-10-22 02:17:33,097 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 156 transitions. Word has length 13 [2020-10-22 02:17:33,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:17:33,097 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 156 transitions. [2020-10-22 02:17:33,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:17:33,098 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 156 transitions. [2020-10-22 02:17:33,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-22 02:17:33,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:17:33,099 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:17:33,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-22 02:17:33,100 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:17:33,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:17:33,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1795509398, now seen corresponding path program 1 times [2020-10-22 02:17:33,108 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:17:33,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120877522] [2020-10-22 02:17:33,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:17:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:17:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:17:33,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120877522] [2020-10-22 02:17:33,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:17:33,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:17:33,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [869929183] [2020-10-22 02:17:33,233 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:17:33,235 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:17:33,242 INFO L252 McrAutomatonBuilder]: Finished intersection with 48 states and 81 transitions. [2020-10-22 02:17:33,242 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:17:33,541 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3381#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:17:33,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-22 02:17:33,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:17:33,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-22 02:17:33,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-22 02:17:33,543 INFO L87 Difference]: Start difference. First operand 77 states and 156 transitions. Second operand 6 states. [2020-10-22 02:17:33,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:17:33,586 INFO L93 Difference]: Finished difference Result 78 states and 146 transitions. [2020-10-22 02:17:33,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-22 02:17:33,586 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-22 02:17:33,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:17:33,587 INFO L225 Difference]: With dead ends: 78 [2020-10-22 02:17:33,587 INFO L226 Difference]: Without dead ends: 63 [2020-10-22 02:17:33,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:17:33,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-22 02:17:33,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-22 02:17:33,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-22 02:17:33,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 116 transitions. [2020-10-22 02:17:33,591 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 116 transitions. Word has length 14 [2020-10-22 02:17:33,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:17:33,592 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 116 transitions. [2020-10-22 02:17:33,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-22 02:17:33,592 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 116 transitions. [2020-10-22 02:17:33,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-22 02:17:33,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:17:33,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:17:33,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-22 02:17:33,593 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:17:33,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:17:33,594 INFO L82 PathProgramCache]: Analyzing trace with hash 213970275, now seen corresponding path program 1 times [2020-10-22 02:17:33,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:17:33,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775389409] [2020-10-22 02:17:33,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:17:33,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:17:33,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:17:33,650 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775389409] [2020-10-22 02:17:33,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:17:33,651 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-22 02:17:33,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [585774606] [2020-10-22 02:17:33,651 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:17:33,653 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:17:33,659 INFO L252 McrAutomatonBuilder]: Finished intersection with 50 states and 84 transitions. [2020-10-22 02:17:33,659 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:17:33,934 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3594#(<= ~__unbuffered_cnt~0 0)] [2020-10-22 02:17:33,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-22 02:17:33,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:17:33,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-22 02:17:33,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-22 02:17:33,935 INFO L87 Difference]: Start difference. First operand 63 states and 116 transitions. Second operand 7 states. [2020-10-22 02:17:33,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:17:33,987 INFO L93 Difference]: Finished difference Result 60 states and 108 transitions. [2020-10-22 02:17:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-22 02:17:33,988 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-22 02:17:33,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:17:33,989 INFO L225 Difference]: With dead ends: 60 [2020-10-22 02:17:33,989 INFO L226 Difference]: Without dead ends: 54 [2020-10-22 02:17:33,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-22 02:17:33,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-22 02:17:33,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-22 02:17:33,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-22 02:17:33,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 98 transitions. [2020-10-22 02:17:33,992 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 98 transitions. Word has length 15 [2020-10-22 02:17:33,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:17:33,992 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 98 transitions. [2020-10-22 02:17:33,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-22 02:17:33,993 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 98 transitions. [2020-10-22 02:17:33,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-22 02:17:33,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-22 02:17:33,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-22 02:17:33,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-22 02:17:33,994 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-22 02:17:33,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-22 02:17:33,994 INFO L82 PathProgramCache]: Analyzing trace with hash -534648938, now seen corresponding path program 1 times [2020-10-22 02:17:33,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-22 02:17:33,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502013793] [2020-10-22 02:17:33,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-22 02:17:34,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-22 02:17:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-22 02:17:34,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502013793] [2020-10-22 02:17:34,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-22 02:17:34,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-22 02:17:34,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [913855896] [2020-10-22 02:17:34,029 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-22 02:17:34,030 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-10-22 02:17:34,037 INFO L252 McrAutomatonBuilder]: Finished intersection with 54 states and 89 transitions. [2020-10-22 02:17:34,037 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-22 02:17:34,228 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-22 02:17:34,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-22 02:17:34,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-22 02:17:34,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-22 02:17:34,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-22 02:17:34,230 INFO L87 Difference]: Start difference. First operand 54 states and 98 transitions. Second operand 4 states. [2020-10-22 02:17:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-22 02:17:34,248 INFO L93 Difference]: Finished difference Result 53 states and 97 transitions. [2020-10-22 02:17:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-22 02:17:34,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-22 02:17:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-22 02:17:34,248 INFO L225 Difference]: With dead ends: 53 [2020-10-22 02:17:34,249 INFO L226 Difference]: Without dead ends: 0 [2020-10-22 02:17:34,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-22 02:17:34,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-22 02:17:34,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-22 02:17:34,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-22 02:17:34,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-22 02:17:34,250 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-22 02:17:34,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-22 02:17:34,251 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-22 02:17:34,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-22 02:17:34,251 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-22 02:17:34,251 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-22 02:17:34,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-22 02:17:34,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 02:17:34 BasicIcfg [2020-10-22 02:17:34,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-22 02:17:34,259 INFO L168 Benchmark]: Toolchain (without parser) took 6345.33 ms. Allocated memory was 138.4 MB in the beginning and 288.4 MB in the end (delta: 149.9 MB). Free memory was 100.0 MB in the beginning and 95.7 MB in the end (delta: 4.4 MB). Peak memory consumption was 154.3 MB. Max. memory is 7.1 GB. [2020-10-22 02:17:34,261 INFO L168 Benchmark]: CDTParser took 2.79 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-22 02:17:34,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 794.50 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 156.0 MB in the end (delta: -56.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. [2020-10-22 02:17:34,262 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.44 ms. Allocated memory is still 201.9 MB. Free memory was 156.0 MB in the beginning and 153.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-10-22 02:17:34,269 INFO L168 Benchmark]: Boogie Preprocessor took 28.01 ms. Allocated memory is still 201.9 MB. Free memory was 153.3 MB in the beginning and 151.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-10-22 02:17:34,270 INFO L168 Benchmark]: RCFGBuilder took 481.14 ms. Allocated memory is still 201.9 MB. Free memory was 151.9 MB in the beginning and 128.0 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-10-22 02:17:34,271 INFO L168 Benchmark]: TraceAbstraction took 4985.34 ms. Allocated memory was 201.9 MB in the beginning and 288.4 MB in the end (delta: 86.5 MB). Free memory was 127.3 MB in the beginning and 95.7 MB in the end (delta: 31.6 MB). Peak memory consumption was 118.1 MB. Max. memory is 7.1 GB. [2020-10-22 02:17:34,283 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 2.79 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 794.50 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 99.2 MB in the beginning and 156.0 MB in the end (delta: -56.8 MB). Peak memory consumption was 22.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 45.44 ms. Allocated memory is still 201.9 MB. Free memory was 156.0 MB in the beginning and 153.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.01 ms. Allocated memory is still 201.9 MB. Free memory was 153.3 MB in the beginning and 151.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.14 ms. Allocated memory is still 201.9 MB. Free memory was 151.9 MB in the beginning and 128.0 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4985.34 ms. Allocated memory was 201.9 MB in the beginning and 288.4 MB in the end (delta: 86.5 MB). Free memory was 127.3 MB in the beginning and 95.7 MB in the end (delta: 31.6 MB). Peak memory consumption was 118.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 775 VarBasedMoverChecksPositive, 28 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 57 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.9s, 86 PlacesBefore, 31 PlacesAfterwards, 79 TransitionsBefore, 22 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 6 FixpointIterations, 18 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 72 TotalNumberOfCompositions, 2926 MoverChecksTotal - PositiveResult [Line: 17]: 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, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 173 SDtfs, 103 SDslu, 204 SDs, 0 SdLazy, 120 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 151 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 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, 0.4s InterpolantComputationTime, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 3386 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...