/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-bf4350c [2020-09-18 00:16:45,463 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-18 00:16:45,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-18 00:16:45,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-18 00:16:45,514 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-18 00:16:45,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-18 00:16:45,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-18 00:16:45,531 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-18 00:16:45,534 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-18 00:16:45,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-18 00:16:45,539 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-18 00:16:45,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-18 00:16:45,541 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-18 00:16:45,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-18 00:16:45,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-18 00:16:45,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-18 00:16:45,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-18 00:16:45,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-18 00:16:45,553 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-18 00:16:45,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-18 00:16:45,564 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-18 00:16:45,565 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-18 00:16:45,566 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-18 00:16:45,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-18 00:16:45,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-18 00:16:45,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-18 00:16:45,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-18 00:16:45,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-18 00:16:45,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-18 00:16:45,576 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-18 00:16:45,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-18 00:16:45,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-18 00:16:45,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-18 00:16:45,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-18 00:16:45,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-18 00:16:45,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-18 00:16:45,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-18 00:16:45,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-18 00:16:45,581 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-18 00:16:45,583 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-18 00:16:45,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-18 00:16:45,585 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 00:16:45,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-18 00:16:45,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-18 00:16:45,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-18 00:16:45,635 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-18 00:16:45,635 INFO L138 SettingsManager]: * Use SBE=true [2020-09-18 00:16:45,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-18 00:16:45,636 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-18 00:16:45,636 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-18 00:16:45,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-18 00:16:45,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-18 00:16:45,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-18 00:16:45,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-18 00:16:45,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-18 00:16:45,638 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-18 00:16:45,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-18 00:16:45,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-18 00:16:45,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-18 00:16:45,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-18 00:16:45,639 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-18 00:16:45,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-18 00:16:45,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-18 00:16:45,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-18 00:16:45,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-18 00:16:45,640 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-18 00:16:45,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-18 00:16:45,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-18 00:16:45,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-18 00:16:45,641 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-18 00:16:45,641 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-18 00:16:45,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-18 00:16:45,642 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-18 00:16:46,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-18 00:16:46,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-18 00:16:46,110 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-18 00:16:46,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-18 00:16:46,113 INFO L275 PluginConnector]: CDTParser initialized [2020-09-18 00:16:46,114 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-09-18 00:16:46,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e271e507c/21be590de0de474bb0a31b205dc7db93/FLAG98c37ad90 [2020-09-18 00:16:46,796 INFO L306 CDTParser]: Found 1 translation units. [2020-09-18 00:16:46,797 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-09-18 00:16:46,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e271e507c/21be590de0de474bb0a31b205dc7db93/FLAG98c37ad90 [2020-09-18 00:16:47,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e271e507c/21be590de0de474bb0a31b205dc7db93 [2020-09-18 00:16:47,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-18 00:16:47,063 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-18 00:16:47,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-18 00:16:47,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-18 00:16:47,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-18 00:16:47,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:16:47" (1/1) ... [2020-09-18 00:16:47,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27c53cf7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:16:47, skipping insertion in model container [2020-09-18 00:16:47,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 12:16:47" (1/1) ... [2020-09-18 00:16:47,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-18 00:16:47,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-18 00:16:47,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:16:47,551 INFO L203 MainTranslator]: Completed pre-run [2020-09-18 00:16:47,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-18 00:16:47,815 INFO L208 MainTranslator]: Completed translation [2020-09-18 00:16:47,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:16:47 WrapperNode [2020-09-18 00:16:47,815 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-18 00:16:47,816 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-18 00:16:47,817 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-18 00:16:47,817 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-18 00:16:47,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:16:47" (1/1) ... [2020-09-18 00:16:47,846 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:16:47" (1/1) ... [2020-09-18 00:16:47,874 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-18 00:16:47,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-18 00:16:47,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-18 00:16:47,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-18 00:16:47,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:16:47" (1/1) ... [2020-09-18 00:16:47,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:16:47" (1/1) ... [2020-09-18 00:16:47,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:16:47" (1/1) ... [2020-09-18 00:16:47,888 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:16:47" (1/1) ... [2020-09-18 00:16:47,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:16:47" (1/1) ... [2020-09-18 00:16:47,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:16:47" (1/1) ... [2020-09-18 00:16:47,902 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:16:47" (1/1) ... [2020-09-18 00:16:47,905 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-18 00:16:47,906 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-18 00:16:47,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-18 00:16:47,906 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-18 00:16:47,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:16:47" (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 00:16:47,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-18 00:16:47,997 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-18 00:16:47,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-18 00:16:47,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-18 00:16:47,999 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-18 00:16:47,999 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-18 00:16:47,999 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-18 00:16:48,000 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-18 00:16:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-18 00:16:48,000 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-18 00:16:48,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-18 00:16:48,001 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-18 00:16:48,001 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-18 00:16:48,003 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 00:16:48,392 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-18 00:16:48,392 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-18 00:16:48,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:16:48 BoogieIcfgContainer [2020-09-18 00:16:48,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-18 00:16:48,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-18 00:16:48,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-18 00:16:48,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-18 00:16:48,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 12:16:47" (1/3) ... [2020-09-18 00:16:48,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16decf2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:16:48, skipping insertion in model container [2020-09-18 00:16:48,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 12:16:47" (2/3) ... [2020-09-18 00:16:48,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16decf2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 12:16:48, skipping insertion in model container [2020-09-18 00:16:48,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 12:16:48" (3/3) ... [2020-09-18 00:16:48,407 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-09-18 00:16:48,418 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-18 00:16:48,419 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-18 00:16:48,429 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-18 00:16:48,430 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-18 00:16:48,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,459 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,459 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,460 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,460 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,461 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,462 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,462 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,462 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,463 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,463 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,463 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,464 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,464 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,469 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,470 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,470 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,470 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,480 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,480 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,480 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,481 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,483 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,484 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,484 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-18 00:16:48,507 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-18 00:16:48,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-18 00:16:48,532 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-18 00:16:48,532 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-18 00:16:48,533 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-18 00:16:48,533 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-18 00:16:48,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-18 00:16:48,533 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-18 00:16:48,534 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-18 00:16:48,551 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-18 00:16:48,554 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 00:16:48,603 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 00:16:48,604 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:16:48,610 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. [2020-09-18 00:16:48,613 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-18 00:16:48,635 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-18 00:16:48,636 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-18 00:16:48,636 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. [2020-09-18 00:16:48,639 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-18 00:16:48,640 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-18 00:16:50,100 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-09-18 00:16:50,231 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-09-18 00:16:50,322 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-18 00:16:50,323 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-18 00:16:50,328 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-18 00:16:50,356 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-18 00:16:50,359 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-18 00:16:50,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-18 00:16:50,369 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:16:50,370 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:16:50,370 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:16:50,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:16:50,378 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-18 00:16:50,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:16:50,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572769568] [2020-09-18 00:16:50,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:16:50,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:16:50,642 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 00:16:50,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572769568] [2020-09-18 00:16:50,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:16:50,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-18 00:16:50,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2036564661] [2020-09-18 00:16:50,647 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:16:50,650 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:16:50,665 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-18 00:16:50,665 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:16:50,667 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:16:50,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:16:50,668 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:16:50,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:16:50,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:16:50,687 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-18 00:16:50,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:16:50,734 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-09-18 00:16:50,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:16:50,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-18 00:16:50,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:16:50,758 INFO L225 Difference]: With dead ends: 266 [2020-09-18 00:16:50,759 INFO L226 Difference]: Without dead ends: 202 [2020-09-18 00:16:50,761 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 00:16:50,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-18 00:16:50,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-18 00:16:50,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-18 00:16:50,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-18 00:16:50,850 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-09-18 00:16:50,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:16:50,852 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-18 00:16:50,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:16:50,852 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-18 00:16:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-18 00:16:50,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:16:50,854 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:16:50,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-18 00:16:50,855 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:16:50,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:16:50,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-09-18 00:16:50,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:16:50,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805254048] [2020-09-18 00:16:50,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:16:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:16:50,967 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 00:16:50,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805254048] [2020-09-18 00:16:50,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:16:50,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:16:50,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1874394906] [2020-09-18 00:16:50,968 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:16:50,969 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:16:50,972 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-09-18 00:16:50,972 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:16:50,998 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:16:51,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:16:51,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:16:51,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:16:51,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:16:51,001 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-09-18 00:16:51,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:16:51,035 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-09-18 00:16:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-18 00:16:51,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-18 00:16:51,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:16:51,038 INFO L225 Difference]: With dead ends: 254 [2020-09-18 00:16:51,038 INFO L226 Difference]: Without dead ends: 190 [2020-09-18 00:16:51,039 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 [2020-09-18 00:16:51,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-18 00:16:51,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-09-18 00:16:51,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-18 00:16:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-09-18 00:16:51,059 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-09-18 00:16:51,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:16:51,059 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-09-18 00:16:51,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:16:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-09-18 00:16:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-18 00:16:51,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:16:51,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:16:51,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-18 00:16:51,062 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:16:51,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:16:51,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-09-18 00:16:51,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:16:51,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282457835] [2020-09-18 00:16:51,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:16:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:16:51,202 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 00:16:51,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282457835] [2020-09-18 00:16:51,203 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:16:51,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-18 00:16:51,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1695199078] [2020-09-18 00:16:51,204 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:16:51,205 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:16:51,207 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-09-18 00:16:51,208 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:16:51,236 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:16:51,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:16:51,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:16:51,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:16:51,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:16:51,237 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-09-18 00:16:51,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:16:51,265 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-09-18 00:16:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:16:51,265 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-18 00:16:51,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:16:51,267 INFO L225 Difference]: With dead ends: 286 [2020-09-18 00:16:51,267 INFO L226 Difference]: Without dead ends: 178 [2020-09-18 00:16:51,268 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 [2020-09-18 00:16:51,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-18 00:16:51,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-09-18 00:16:51,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-18 00:16:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-09-18 00:16:51,281 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-09-18 00:16:51,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:16:51,281 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-09-18 00:16:51,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:16:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-09-18 00:16:51,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-18 00:16:51,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:16:51,284 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:16:51,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-18 00:16:51,284 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:16:51,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:16:51,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-09-18 00:16:51,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:16:51,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157532011] [2020-09-18 00:16:51,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:16:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:16:51,355 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 00:16:51,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157532011] [2020-09-18 00:16:51,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:16:51,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:16:51,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1414750564] [2020-09-18 00:16:51,359 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:16:51,360 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:16:51,363 INFO L274 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-09-18 00:16:51,363 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:16:51,398 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:16:51,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-18 00:16:51,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:16:51,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-18 00:16:51,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-18 00:16:51,399 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-09-18 00:16:51,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:16:51,414 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-09-18 00:16:51,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-18 00:16:51,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-18 00:16:51,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:16:51,416 INFO L225 Difference]: With dead ends: 174 [2020-09-18 00:16:51,416 INFO L226 Difference]: Without dead ends: 72 [2020-09-18 00:16:51,416 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 [2020-09-18 00:16:51,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-18 00:16:51,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-18 00:16:51,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-18 00:16:51,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-09-18 00:16:51,422 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-09-18 00:16:51,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:16:51,423 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-09-18 00:16:51,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-18 00:16:51,423 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-09-18 00:16:51,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-18 00:16:51,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-18 00:16:51,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-18 00:16:51,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-18 00:16:51,425 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-18 00:16:51,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-18 00:16:51,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-09-18 00:16:51,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-18 00:16:51,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101884033] [2020-09-18 00:16:51,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-18 00:16:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-18 00:16:51,518 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 00:16:51,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101884033] [2020-09-18 00:16:51,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-18 00:16:51,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-18 00:16:51,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1905343763] [2020-09-18 00:16:51,520 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-18 00:16:51,522 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-18 00:16:51,526 INFO L274 McrAutomatonBuilder]: Finished intersection with 33 states and 53 transitions. [2020-09-18 00:16:51,527 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-18 00:16:51,567 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:16:51,595 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:16:51,611 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:16:51,626 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:16:51,641 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-18 00:16:51,649 INFO L409 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-18 00:16:51,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-18 00:16:51,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-18 00:16:51,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-18 00:16:51,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-18 00:16:51,650 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-09-18 00:16:51,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-18 00:16:51,680 INFO L93 Difference]: Finished difference Result 60 states and 122 transitions. [2020-09-18 00:16:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-18 00:16:51,681 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-18 00:16:51,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-18 00:16:51,682 INFO L225 Difference]: With dead ends: 60 [2020-09-18 00:16:51,682 INFO L226 Difference]: Without dead ends: 0 [2020-09-18 00:16:51,682 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 [2020-09-18 00:16:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-18 00:16:51,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-18 00:16:51,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-18 00:16:51,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-18 00:16:51,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-09-18 00:16:51,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-18 00:16:51,683 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-18 00:16:51,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-18 00:16:51,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-18 00:16:51,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-18 00:16:51,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-18 00:16:51,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 12:16:51 BasicIcfg [2020-09-18 00:16:51,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-18 00:16:51,691 INFO L168 Benchmark]: Toolchain (without parser) took 4631.98 ms. Allocated memory was 146.8 MB in the beginning and 257.9 MB in the end (delta: 111.1 MB). Free memory was 100.6 MB in the beginning and 160.0 MB in the end (delta: -59.5 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. [2020-09-18 00:16:51,692 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.7 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-18 00:16:51,693 INFO L168 Benchmark]: CACSL2BoogieTranslator took 751.50 ms. Allocated memory was 146.8 MB in the beginning and 227.5 MB in the end (delta: 80.7 MB). Free memory was 99.7 MB in the beginning and 193.3 MB in the end (delta: -93.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-09-18 00:16:51,694 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.10 ms. Allocated memory is still 227.5 MB. Free memory was 193.3 MB in the beginning and 190.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-18 00:16:51,695 INFO L168 Benchmark]: Boogie Preprocessor took 30.62 ms. Allocated memory is still 227.5 MB. Free memory was 190.6 MB in the beginning and 189.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-18 00:16:51,696 INFO L168 Benchmark]: RCFGBuilder took 491.94 ms. Allocated memory is still 227.5 MB. Free memory was 189.3 MB in the beginning and 166.0 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-09-18 00:16:51,697 INFO L168 Benchmark]: TraceAbstraction took 3290.28 ms. Allocated memory was 227.5 MB in the beginning and 257.9 MB in the end (delta: 30.4 MB). Free memory was 166.0 MB in the beginning and 160.0 MB in the end (delta: 5.9 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2020-09-18 00:16:51,701 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 146.8 MB. Free memory was 120.1 MB in the beginning and 119.7 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 751.50 ms. Allocated memory was 146.8 MB in the beginning and 227.5 MB in the end (delta: 80.7 MB). Free memory was 99.7 MB in the beginning and 193.3 MB in the end (delta: -93.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.10 ms. Allocated memory is still 227.5 MB. Free memory was 193.3 MB in the beginning and 190.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.62 ms. Allocated memory is still 227.5 MB. Free memory was 190.6 MB in the beginning and 189.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 491.94 ms. Allocated memory is still 227.5 MB. Free memory was 189.3 MB in the beginning and 166.0 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3290.28 ms. Allocated memory was 227.5 MB in the beginning and 257.9 MB in the end (delta: 30.4 MB). Free memory was 166.0 MB in the beginning and 160.0 MB in the end (delta: 5.9 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.7s, 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: 3.1s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, 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: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s 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...