/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-18 01:06:44,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 01:06:44,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 01:06:44,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 01:06:44,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 01:06:44,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 01:06:44,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 01:06:44,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 01:06:44,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 01:06:44,595 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 01:06:44,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 01:06:44,598 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 01:06:44,598 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 01:06:44,599 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 01:06:44,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 01:06:44,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 01:06:44,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 01:06:44,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 01:06:44,604 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 01:06:44,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 01:06:44,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 01:06:44,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 01:06:44,610 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 01:06:44,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 01:06:44,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-18 01:06:44,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 01:06:44,618 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 01:06:44,619 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 01:06:44,620 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 01:06:44,621 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 01:06:44,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 01:06:44,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 01:06:44,622 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 01:06:44,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 01:06:44,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 01:06:44,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 01:06:44,628 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-WP.epf [2020-09-18 01:06:44,655 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 01:06:44,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 01:06:44,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 01:06:44,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 01:06:44,657 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 01:06:44,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 01:06:44,657 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 01:06:44,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 01:06:44,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 01:06:44,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 01:06:44,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 01:06:44,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 01:06:44,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 01:06:44,659 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 01:06:44,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 01:06:44,659 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 01:06:44,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 01:06:44,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 01:06:44,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 01:06:44,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 01:06:44,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 01:06:44,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 01:06:44,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 01:06:44,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 01:06:44,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 01:06:44,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 01:06:44,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 01:06:44,662 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 01:06:44,662 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 01:06:44,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 01:06:44,662 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 01:06:45,161 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 01:06:45,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 01:06:45,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 01:06:45,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 01:06:45,198 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 01:06:45,201 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-09-18 01:06:45,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51e18745/95200714b17b488e9ebab195650daf32/FLAG1f51248e3 [2020-09-18 01:06:45,992 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 01:06:45,993 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-09-18 01:06:46,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51e18745/95200714b17b488e9ebab195650daf32/FLAG1f51248e3 [2020-09-18 01:06:46,320 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f51e18745/95200714b17b488e9ebab195650daf32 [2020-09-18 01:06:46,337 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 01:06:46,379 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 01:06:46,381 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 01:06:46,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 01:06:46,386 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 01:06:46,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 01:06:46" (1/1) ... [2020-09-18 01:06:46,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca3833b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:06:46, skipping insertion in model container [2020-09-18 01:06:46,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 01:06:46" (1/1) ... [2020-09-18 01:06:46,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 01:06:46,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 01:06:47,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 01:06:47,029 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 01:06:47,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 01:06:47,162 INFO L208 MainTranslator]: Completed translation [2020-09-18 01:06:47,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:06:47 WrapperNode [2020-09-18 01:06:47,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 01:06:47,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 01:06:47,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 01:06:47,165 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 01:06:47,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:06:47" (1/1) ... [2020-09-18 01:06:47,196 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:06:47" (1/1) ... [2020-09-18 01:06:47,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 01:06:47,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 01:06:47,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 01:06:47,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 01:06:47,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:06:47" (1/1) ... [2020-09-18 01:06:47,237 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:06:47" (1/1) ... [2020-09-18 01:06:47,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:06:47" (1/1) ... [2020-09-18 01:06:47,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:06:47" (1/1) ... [2020-09-18 01:06:47,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:06:47" (1/1) ... [2020-09-18 01:06:47,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:06:47" (1/1) ... [2020-09-18 01:06:47,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:06:47" (1/1) ... [2020-09-18 01:06:47,264 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 01:06:47,265 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 01:06:47,265 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 01:06:47,265 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 01:06:47,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:06:47" (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 [2020-09-18 01:06:47,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 01:06:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 01:06:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 01:06:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 01:06:47,362 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 01:06:47,362 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 01:06:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 01:06:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 01:06:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 01:06:47,363 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 01:06:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 01:06:47,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 01:06:47,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 01:06:47,366 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-18 01:06:47,754 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 01:06:47,754 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 01:06:47,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 01:06:47 BoogieIcfgContainer [2020-09-18 01:06:47,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 01:06:47,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 01:06:47,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 01:06:47,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 01:06:47,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 01:06:46" (1/3) ... [2020-09-18 01:06:47,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ddd6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 01:06:47, skipping insertion in model container [2020-09-18 01:06:47,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 01:06:47" (2/3) ... [2020-09-18 01:06:47,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74ddd6f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 01:06:47, skipping insertion in model container [2020-09-18 01:06:47,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 01:06:47" (3/3) ... [2020-09-18 01:06:47,773 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-09-18 01:06:47,786 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 01:06:47,787 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 01:06:47,798 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 01:06:47,799 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 01:06:47,833 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,833 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,834 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,834 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,835 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,835 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,836 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,836 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,836 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,837 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,837 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,838 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,838 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,838 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,839 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,844 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,844 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,844 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,845 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,855 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,855 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,855 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,856 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,861 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,862 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,862 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 01:06:47,890 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 01:06:47,921 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 01:06:47,921 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 01:06:47,921 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 01:06:47,921 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 01:06:47,922 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 01:06:47,922 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 01:06:47,922 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 01:06:47,922 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 01:06:47,942 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-09-18 01:06:47,945 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-09-18 01:06:47,995 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-09-18 01:06:47,996 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 01:06:48,002 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. [2020-09-18 01:06:48,005 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-09-18 01:06:48,027 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-09-18 01:06:48,027 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 01:06:48,028 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. [2020-09-18 01:06:48,030 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-18 01:06:48,031 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 01:06:49,220 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-09-18 01:06:49,532 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1818 [2020-09-18 01:06:49,532 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-09-18 01:06:49,537 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-18 01:06:49,563 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-09-18 01:06:49,565 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-09-18 01:06:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 01:06:49,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:06:49,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:06:49,577 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:06:49,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:06:49,585 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-09-18 01:06:49,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:06:49,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58564596] [2020-09-18 01:06:49,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:06:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:06:49,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:06:49,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58564596] [2020-09-18 01:06:49,877 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:06:49,877 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 01:06:49,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [355520997] [2020-09-18 01:06:49,879 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:06:49,883 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:06:49,901 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 01:06:49,901 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:06:49,903 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:06:49,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 01:06:49,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:06:49,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 01:06:49,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 01:06:49,927 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-09-18 01:06:49,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:06:49,967 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-09-18 01:06:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 01:06:49,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 01:06:49,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:06:49,987 INFO L225 Difference]: With dead ends: 220 [2020-09-18 01:06:49,987 INFO L226 Difference]: Without dead ends: 172 [2020-09-18 01:06:49,989 INFO L675 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 [2020-09-18 01:06:50,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-18 01:06:50,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-09-18 01:06:50,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-18 01:06:50,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-09-18 01:06:50,062 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-09-18 01:06:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:06:50,064 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-09-18 01:06:50,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 01:06:50,064 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-09-18 01:06:50,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-18 01:06:50,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:06:50,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:06:50,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 01:06:50,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:06:50,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:06:50,067 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-09-18 01:06:50,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:06:50,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233118834] [2020-09-18 01:06:50,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:06:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:06:50,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:06:50,148 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233118834] [2020-09-18 01:06:50,149 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:06:50,149 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 01:06:50,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1656799121] [2020-09-18 01:06:50,149 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:06:50,150 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:06:50,153 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-18 01:06:50,154 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:06:50,208 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:06:50,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 01:06:50,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:06:50,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 01:06:50,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 01:06:50,211 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-09-18 01:06:50,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:06:50,219 INFO L93 Difference]: Finished difference Result 163 states and 430 transitions. [2020-09-18 01:06:50,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 01:06:50,220 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-18 01:06:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:06:50,222 INFO L225 Difference]: With dead ends: 163 [2020-09-18 01:06:50,222 INFO L226 Difference]: Without dead ends: 163 [2020-09-18 01:06:50,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 01:06:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-18 01:06:50,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-09-18 01:06:50,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-18 01:06:50,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 430 transitions. [2020-09-18 01:06:50,243 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 430 transitions. Word has length 9 [2020-09-18 01:06:50,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:06:50,243 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 430 transitions. [2020-09-18 01:06:50,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 01:06:50,243 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 430 transitions. [2020-09-18 01:06:50,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 01:06:50,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:06:50,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:06:50,245 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 01:06:50,245 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:06:50,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:06:50,246 INFO L82 PathProgramCache]: Analyzing trace with hash -650627585, now seen corresponding path program 1 times [2020-09-18 01:06:50,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:06:50,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198571615] [2020-09-18 01:06:50,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:06:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:06:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:06:50,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198571615] [2020-09-18 01:06:50,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:06:50,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 01:06:50,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2102977865] [2020-09-18 01:06:50,381 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:06:50,384 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:06:50,388 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-09-18 01:06:50,388 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:06:50,446 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:06:50,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 01:06:50,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:06:50,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 01:06:50,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 01:06:50,448 INFO L87 Difference]: Start difference. First operand 163 states and 430 transitions. Second operand 4 states. [2020-09-18 01:06:50,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:06:50,483 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-09-18 01:06:50,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 01:06:50,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-18 01:06:50,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:06:50,486 INFO L225 Difference]: With dead ends: 218 [2020-09-18 01:06:50,486 INFO L226 Difference]: Without dead ends: 146 [2020-09-18 01:06:50,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:06:50,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-18 01:06:50,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-18 01:06:50,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-18 01:06:50,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-09-18 01:06:50,500 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 10 [2020-09-18 01:06:50,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:06:50,500 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-09-18 01:06:50,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 01:06:50,501 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-09-18 01:06:50,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 01:06:50,502 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 01:06:50,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 01:06:50,502 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 01:06:50,502 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 01:06:50,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 01:06:50,503 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 1 times [2020-09-18 01:06:50,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 01:06:50,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543176064] [2020-09-18 01:06:50,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 01:06:50,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 01:06:50,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-18 01:06:50,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543176064] [2020-09-18 01:06:50,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 01:06:50,617 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 01:06:50,617 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [648623726] [2020-09-18 01:06:50,618 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 01:06:50,619 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 01:06:50,622 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-09-18 01:06:50,622 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 01:06:50,649 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:06:50,677 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:06:50,692 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:06:50,711 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:06:50,730 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 01:06:50,751 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 01:06:50,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 01:06:50,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 01:06:50,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 01:06:50,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 01:06:50,753 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 4 states. [2020-09-18 01:06:50,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 01:06:50,784 INFO L93 Difference]: Finished difference Result 118 states and 288 transitions. [2020-09-18 01:06:50,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 01:06:50,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 01:06:50,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 01:06:50,785 INFO L225 Difference]: With dead ends: 118 [2020-09-18 01:06:50,786 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 01:06:50,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-18 01:06:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 01:06:50,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 01:06:50,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 01:06:50,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 01:06:50,787 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-09-18 01:06:50,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 01:06:50,787 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 01:06:50,788 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 01:06:50,788 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 01:06:50,788 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 01:06:50,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 01:06:50,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 01:06:50 BasicIcfg [2020-09-18 01:06:50,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 01:06:50,795 INFO L168 Benchmark]: Toolchain (without parser) took 4456.45 ms. Allocated memory was 146.3 MB in the beginning and 248.5 MB in the end (delta: 102.2 MB). Free memory was 99.9 MB in the beginning and 118.2 MB in the end (delta: -18.4 MB). Peak memory consumption was 83.9 MB. Max. memory is 7.1 GB. [2020-09-18 01:06:50,796 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-18 01:06:50,799 INFO L168 Benchmark]: CACSL2BoogieTranslator took 782.33 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 99.2 MB in the beginning and 159.6 MB in the end (delta: -60.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-09-18 01:06:50,802 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.26 ms. Allocated memory is still 203.9 MB. Free memory was 159.6 MB in the beginning and 157.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 01:06:50,803 INFO L168 Benchmark]: Boogie Preprocessor took 39.60 ms. Allocated memory is still 203.9 MB. Free memory was 157.6 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-18 01:06:50,804 INFO L168 Benchmark]: RCFGBuilder took 495.75 ms. Allocated memory is still 203.9 MB. Free memory was 155.7 MB in the beginning and 134.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. [2020-09-18 01:06:50,805 INFO L168 Benchmark]: TraceAbstraction took 3030.93 ms. Allocated memory was 203.9 MB in the beginning and 248.5 MB in the end (delta: 44.6 MB). Free memory was 133.5 MB in the beginning and 118.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. [2020-09-18 01:06:50,809 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.3 MB. Free memory was 119.5 MB in the beginning and 119.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 782.33 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 99.2 MB in the beginning and 159.6 MB in the end (delta: -60.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.26 ms. Allocated memory is still 203.9 MB. Free memory was 159.6 MB in the beginning and 157.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 39.60 ms. Allocated memory is still 203.9 MB. Free memory was 157.6 MB in the beginning and 155.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 495.75 ms. Allocated memory is still 203.9 MB. Free memory was 155.7 MB in the beginning and 134.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3030.93 ms. Allocated memory was 203.9 MB in the beginning and 248.5 MB in the end (delta: 44.6 MB). Free memory was 133.5 MB in the beginning and 118.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 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: 2.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 63 SDtfs, 41 SDslu, 62 SDs, 0 SdLazy, 31 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 882 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...