/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/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c7e336b [2020-10-06 01:00:51,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-06 01:00:51,488 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-06 01:00:51,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-06 01:00:51,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-06 01:00:51,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-06 01:00:51,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-06 01:00:51,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-06 01:00:51,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-06 01:00:51,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-06 01:00:51,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-06 01:00:51,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-06 01:00:51,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-06 01:00:51,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-06 01:00:51,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-06 01:00:51,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-06 01:00:51,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-06 01:00:51,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-06 01:00:51,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-06 01:00:51,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-06 01:00:51,534 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-06 01:00:51,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-06 01:00:51,536 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-06 01:00:51,537 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-06 01:00:51,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-06 01:00:51,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-06 01:00:51,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-06 01:00:51,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-06 01:00:51,541 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-06 01:00:51,542 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-06 01:00:51,542 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-06 01:00:51,543 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-06 01:00:51,544 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-06 01:00:51,545 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-06 01:00:51,546 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-06 01:00:51,546 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-06 01:00:51,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-06 01:00:51,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-06 01:00:51,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-06 01:00:51,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-06 01:00:51,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-06 01:00:51,549 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 [2020-10-06 01:00:51,572 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-06 01:00:51,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-06 01:00:51,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-06 01:00:51,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-06 01:00:51,576 INFO L138 SettingsManager]: * Use SBE=true [2020-10-06 01:00:51,576 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-06 01:00:51,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-06 01:00:51,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-06 01:00:51,577 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-06 01:00:51,577 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-06 01:00:51,577 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-06 01:00:51,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-06 01:00:51,578 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-06 01:00:51,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-06 01:00:51,582 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-06 01:00:51,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-06 01:00:51,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-06 01:00:51,583 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-06 01:00:51,583 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-06 01:00:51,583 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-06 01:00:51,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-06 01:00:51,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-06 01:00:51,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-06 01:00:51,584 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-06 01:00:51,584 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-06 01:00:51,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-06 01:00:51,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-06 01:00:51,588 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-06 01:00:51,588 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-06 01:00:51,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-06 01:00:51,589 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-06 01:00:51,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-06 01:00:51,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-06 01:00:51,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-06 01:00:51,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-06 01:00:51,942 INFO L275 PluginConnector]: CDTParser initialized [2020-10-06 01:00:51,944 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-10-06 01:00:52,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448df4ffd/5f539b7e8c4a4d6589914769c34126be/FLAG167ba6cf4 [2020-10-06 01:00:52,636 INFO L306 CDTParser]: Found 1 translation units. [2020-10-06 01:00:52,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-10-06 01:00:52,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448df4ffd/5f539b7e8c4a4d6589914769c34126be/FLAG167ba6cf4 [2020-10-06 01:00:52,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/448df4ffd/5f539b7e8c4a4d6589914769c34126be [2020-10-06 01:00:52,902 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-06 01:00:52,904 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-06 01:00:52,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-06 01:00:52,906 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-06 01:00:52,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-06 01:00:52,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:00:52" (1/1) ... [2020-10-06 01:00:52,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ace58f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:00:52, skipping insertion in model container [2020-10-06 01:00:52,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.10 01:00:52" (1/1) ... [2020-10-06 01:00:52,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-06 01:00:52,962 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-06 01:00:53,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:00:53,417 INFO L203 MainTranslator]: Completed pre-run [2020-10-06 01:00:53,468 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-06 01:00:53,548 INFO L208 MainTranslator]: Completed translation [2020-10-06 01:00:53,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:00:53 WrapperNode [2020-10-06 01:00:53,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-06 01:00:53,550 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-06 01:00:53,550 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-06 01:00:53,550 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-06 01:00:53,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:00:53" (1/1) ... [2020-10-06 01:00:53,578 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:00:53" (1/1) ... [2020-10-06 01:00:53,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-06 01:00:53,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-06 01:00:53,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-06 01:00:53,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-06 01:00:53,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:00:53" (1/1) ... [2020-10-06 01:00:53,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:00:53" (1/1) ... [2020-10-06 01:00:53,619 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:00:53" (1/1) ... [2020-10-06 01:00:53,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:00:53" (1/1) ... [2020-10-06 01:00:53,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:00:53" (1/1) ... [2020-10-06 01:00:53,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:00:53" (1/1) ... [2020-10-06 01:00:53,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:00:53" (1/1) ... [2020-10-06 01:00:53,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-06 01:00:53,634 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-06 01:00:53,634 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-06 01:00:53,634 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-06 01:00:53,635 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:00:53" (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 [2020-10-06 01:00:53,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-06 01:00:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-06 01:00:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-06 01:00:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-06 01:00:53,713 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-06 01:00:53,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-06 01:00:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-06 01:00:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-06 01:00:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-06 01:00:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-06 01:00:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-06 01:00:53,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-06 01:00:53,714 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-06 01:00:53,717 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-06 01:00:54,108 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-06 01:00:54,108 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-06 01:00:54,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:00:54 BoogieIcfgContainer [2020-10-06 01:00:54,111 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-06 01:00:54,113 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-06 01:00:54,113 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-06 01:00:54,117 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-06 01:00:54,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.10 01:00:52" (1/3) ... [2020-10-06 01:00:54,118 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc509b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:00:54, skipping insertion in model container [2020-10-06 01:00:54,118 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.10 01:00:53" (2/3) ... [2020-10-06 01:00:54,119 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc509b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.10 01:00:54, skipping insertion in model container [2020-10-06 01:00:54,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.10 01:00:54" (3/3) ... [2020-10-06 01:00:54,121 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-10-06 01:00:54,132 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-06 01:00:54,133 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-06 01:00:54,142 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-06 01:00:54,143 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-06 01:00:54,174 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,175 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,175 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,175 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,176 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,176 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,177 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,177 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,177 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,178 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,178 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,178 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,179 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,179 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,180 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,180 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,180 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,185 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,185 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,186 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,201 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,201 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,202 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,202 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,209 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,210 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,210 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-06 01:00:54,228 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-06 01:00:54,251 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-06 01:00:54,251 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-06 01:00:54,251 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-06 01:00:54,251 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-10-06 01:00:54,251 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-06 01:00:54,252 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-06 01:00:54,252 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-06 01:00:54,252 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-06 01:00:54,269 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-06 01:00:54,272 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:00:54,316 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:00:54,317 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:00:54,323 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 01:00:54,327 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-06 01:00:54,348 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-06 01:00:54,348 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-06 01:00:54,349 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-06 01:00:54,352 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-10-06 01:00:54,353 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-10-06 01:00:54,689 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-10-06 01:00:55,656 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-06 01:00:55,834 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-10-06 01:00:55,835 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-10-06 01:00:55,839 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-06 01:00:55,865 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-06 01:00:55,867 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-06 01:00:55,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-06 01:00:55,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:00:55,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:00:55,876 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:00:55,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:00:55,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-06 01:00:55,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:00:55,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826483474] [2020-10-06 01:00:55,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:00:56,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:00:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:00:56,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826483474] [2020-10-06 01:00:56,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:00:56,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-06 01:00:56,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1123530386] [2020-10-06 01:00:56,143 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:00:56,146 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:00:56,161 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-06 01:00:56,162 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:00:56,167 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:00:56,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:00:56,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:00:56,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:00:56,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:00:56,186 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-06 01:00:56,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:00:56,222 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-10-06 01:00:56,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:00:56,224 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-06 01:00:56,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:00:56,240 INFO L225 Difference]: With dead ends: 266 [2020-10-06 01:00:56,240 INFO L226 Difference]: Without dead ends: 202 [2020-10-06 01:00:56,242 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 [2020-10-06 01:00:56,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-06 01:00:56,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-06 01:00:56,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-06 01:00:56,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-06 01:00:56,309 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-10-06 01:00:56,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:00:56,311 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-06 01:00:56,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:00:56,311 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-06 01:00:56,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-06 01:00:56,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:00:56,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:00:56,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-06 01:00:56,314 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:00:56,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:00:56,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-10-06 01:00:56,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:00:56,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908392612] [2020-10-06 01:00:56,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:00:56,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:00:56,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:00:56,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908392612] [2020-10-06 01:00:56,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:00:56,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:00:56,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1591755228] [2020-10-06 01:00:56,393 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:00:56,394 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:00:56,397 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-10-06 01:00:56,397 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:00:56,417 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:00:56,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:00:56,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:00:56,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:00:56,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:00:56,419 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-10-06 01:00:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:00:56,449 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-10-06 01:00:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-06 01:00:56,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-06 01:00:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:00:56,453 INFO L225 Difference]: With dead ends: 254 [2020-10-06 01:00:56,453 INFO L226 Difference]: Without dead ends: 190 [2020-10-06 01:00:56,454 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:00:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-06 01:00:56,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-10-06 01:00:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-06 01:00:56,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-10-06 01:00:56,473 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-10-06 01:00:56,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:00:56,473 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-10-06 01:00:56,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:00:56,473 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-10-06 01:00:56,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-06 01:00:56,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:00:56,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:00:56,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-06 01:00:56,476 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:00:56,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:00:56,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-10-06 01:00:56,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:00:56,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735159371] [2020-10-06 01:00:56,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:00:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:00:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:00:56,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735159371] [2020-10-06 01:00:56,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:00:56,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-06 01:00:56,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1270895817] [2020-10-06 01:00:56,577 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:00:56,578 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:00:56,581 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-06 01:00:56,581 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:00:56,610 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:00:56,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:00:56,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:00:56,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:00:56,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:00:56,612 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-10-06 01:00:56,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:00:56,643 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-10-06 01:00:56,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:00:56,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-06 01:00:56,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:00:56,646 INFO L225 Difference]: With dead ends: 286 [2020-10-06 01:00:56,646 INFO L226 Difference]: Without dead ends: 178 [2020-10-06 01:00:56,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:00:56,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-06 01:00:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-10-06 01:00:56,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-06 01:00:56,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-10-06 01:00:56,661 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-10-06 01:00:56,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:00:56,661 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-10-06 01:00:56,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:00:56,661 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-10-06 01:00:56,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-06 01:00:56,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:00:56,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:00:56,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-06 01:00:56,664 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:00:56,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:00:56,664 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-10-06 01:00:56,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:00:56,666 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477558727] [2020-10-06 01:00:56,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:00:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:00:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:00:56,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477558727] [2020-10-06 01:00:56,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:00:56,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:00:56,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1991932281] [2020-10-06 01:00:56,704 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:00:56,706 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:00:56,708 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-06 01:00:56,709 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:00:56,735 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:00:56,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-06 01:00:56,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:00:56,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-06 01:00:56,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:00:56,736 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-10-06 01:00:56,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:00:56,751 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-10-06 01:00:56,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-06 01:00:56,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-06 01:00:56,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:00:56,752 INFO L225 Difference]: With dead ends: 174 [2020-10-06 01:00:56,752 INFO L226 Difference]: Without dead ends: 72 [2020-10-06 01:00:56,753 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-06 01:00:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-06 01:00:56,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-06 01:00:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-06 01:00:56,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-10-06 01:00:56,759 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-10-06 01:00:56,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:00:56,759 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-10-06 01:00:56,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-06 01:00:56,759 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-10-06 01:00:56,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-06 01:00:56,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-06 01:00:56,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-06 01:00:56,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-06 01:00:56,761 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-06 01:00:56,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-06 01:00:56,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-10-06 01:00:56,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-06 01:00:56,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948022504] [2020-10-06 01:00:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-06 01:00:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-06 01:00:56,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-06 01:00:56,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948022504] [2020-10-06 01:00:56,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-06 01:00:56,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-06 01:00:56,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [616965220] [2020-10-06 01:00:56,818 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-06 01:00:56,819 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-06 01:00:56,824 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 53 transitions. [2020-10-06 01:00:56,824 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-06 01:00:56,848 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:00:56,872 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:00:56,889 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:00:56,904 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:00:56,958 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-06 01:00:56,977 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-06 01:00:56,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-06 01:00:56,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-06 01:00:56,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-06 01:00:56,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-06 01:00:56,979 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-10-06 01:00:57,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-06 01:00:57,003 INFO L93 Difference]: Finished difference Result 60 states and 122 transitions. [2020-10-06 01:00:57,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-06 01:00:57,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-06 01:00:57,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-06 01:00:57,004 INFO L225 Difference]: With dead ends: 60 [2020-10-06 01:00:57,004 INFO L226 Difference]: Without dead ends: 0 [2020-10-06 01:00:57,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-06 01:00:57,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-06 01:00:57,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-06 01:00:57,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-06 01:00:57,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-06 01:00:57,006 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-10-06 01:00:57,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-06 01:00:57,006 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-06 01:00:57,006 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-06 01:00:57,006 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-06 01:00:57,007 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-06 01:00:57,007 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-06 01:00:57,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.10 01:00:57 BasicIcfg [2020-10-06 01:00:57,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-06 01:00:57,013 INFO L168 Benchmark]: Toolchain (without parser) took 4109.19 ms. Allocated memory was 140.5 MB in the beginning and 246.4 MB in the end (delta: 105.9 MB). Free memory was 102.6 MB in the beginning and 204.5 MB in the end (delta: -101.9 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-10-06 01:00:57,014 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-06 01:00:57,015 INFO L168 Benchmark]: CACSL2BoogieTranslator took 643.69 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 159.2 MB in the end (delta: -56.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-10-06 01:00:57,016 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.23 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-10-06 01:00:57,017 INFO L168 Benchmark]: Boogie Preprocessor took 28.37 ms. Allocated memory is still 202.4 MB. Free memory was 157.2 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:00:57,017 INFO L168 Benchmark]: RCFGBuilder took 477.50 ms. Allocated memory is still 202.4 MB. Free memory was 155.9 MB in the beginning and 133.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-10-06 01:00:57,018 INFO L168 Benchmark]: TraceAbstraction took 2898.43 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 133.0 MB in the beginning and 204.5 MB in the end (delta: -71.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-06 01:00:57,023 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 643.69 ms. Allocated memory was 140.5 MB in the beginning and 202.4 MB in the end (delta: 61.9 MB). Free memory was 102.4 MB in the beginning and 159.2 MB in the end (delta: -56.8 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 55.23 ms. Allocated memory is still 202.4 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.37 ms. Allocated memory is still 202.4 MB. Free memory was 157.2 MB in the beginning and 155.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 477.50 ms. Allocated memory is still 202.4 MB. Free memory was 155.9 MB in the beginning and 133.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2898.43 ms. Allocated memory was 202.4 MB in the beginning and 246.4 MB in the end (delta: 44.0 MB). Free memory was 133.0 MB in the beginning and 204.5 MB in the end (delta: -71.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 667 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2768 CheckedPairsTotal, 58 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 104 SDtfs, 64 SDslu, 100 SDs, 0 SdLazy, 51 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 1269 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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...