/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 23:52:37,524 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 23:52:37,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 23:52:37,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 23:52:37,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 23:52:37,560 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 23:52:37,561 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 23:52:37,563 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 23:52:37,565 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 23:52:37,566 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 23:52:37,567 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 23:52:37,568 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 23:52:37,568 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 23:52:37,569 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 23:52:37,570 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 23:52:37,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 23:52:37,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 23:52:37,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 23:52:37,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 23:52:37,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 23:52:37,579 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 23:52:37,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 23:52:37,581 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 23:52:37,582 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 23:52:37,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-15 23:52:37,585 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-15 23:52:37,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-15 23:52:37,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-15 23:52:37,586 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-15 23:52:37,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-15 23:52:37,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 23:52:37,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 23:52:37,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 23:52:37,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 23:52:37,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 23:52:37,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 23:52:37,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 23:52:37,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 23:52:37,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 23:52:37,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 23:52:37,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 23:52:37,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-09-15 23:52:37,646 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 23:52:37,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 23:52:37,651 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 23:52:37,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 23:52:37,652 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 23:52:37,652 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 23:52:37,652 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 23:52:37,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 23:52:37,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 23:52:37,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 23:52:37,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 23:52:37,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 23:52:37,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 23:52:37,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 23:52:37,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 23:52:37,660 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 23:52:37,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 23:52:37,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 23:52:37,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 23:52:37,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 23:52:37,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 23:52:37,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:52:37,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 23:52:37,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 23:52:37,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 23:52:37,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 23:52:37,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 23:52:37,662 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 23:52:37,664 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 23:52:37,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 23:52:37,664 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 23:52:38,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 23:52:38,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 23:52:38,204 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 23:52:38,206 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 23:52:38,206 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 23:52:38,208 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-09-15 23:52:38,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f45d96224/11ff5093b15844349ff7de636116086a/FLAG7c1e3d666 [2020-09-15 23:52:38,972 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 23:52:38,973 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-09-15 23:52:38,990 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f45d96224/11ff5093b15844349ff7de636116086a/FLAG7c1e3d666 [2020-09-15 23:52:39,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f45d96224/11ff5093b15844349ff7de636116086a [2020-09-15 23:52:39,185 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 23:52:39,194 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 23:52:39,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 23:52:39,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 23:52:39,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 23:52:39,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:52:39" (1/1) ... [2020-09-15 23:52:39,208 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11d5c37e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:52:39, skipping insertion in model container [2020-09-15 23:52:39,208 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:52:39" (1/1) ... [2020-09-15 23:52:39,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 23:52:39,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 23:52:39,902 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:52:39,917 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 23:52:39,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:52:40,044 INFO L208 MainTranslator]: Completed translation [2020-09-15 23:52:40,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:52:40 WrapperNode [2020-09-15 23:52:40,045 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 23:52:40,046 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 23:52:40,046 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 23:52:40,047 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 23:52:40,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:52:40" (1/1) ... [2020-09-15 23:52:40,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:52:40" (1/1) ... [2020-09-15 23:52:40,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 23:52:40,108 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 23:52:40,108 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 23:52:40,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 23:52:40,121 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:52:40" (1/1) ... [2020-09-15 23:52:40,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:52:40" (1/1) ... [2020-09-15 23:52:40,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:52:40" (1/1) ... [2020-09-15 23:52:40,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:52:40" (1/1) ... [2020-09-15 23:52:40,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:52:40" (1/1) ... [2020-09-15 23:52:40,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:52:40" (1/1) ... [2020-09-15 23:52:40,137 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:52:40" (1/1) ... [2020-09-15 23:52:40,141 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 23:52:40,141 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 23:52:40,141 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 23:52:40,142 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 23:52:40,143 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:52:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-15 23:52:40,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 23:52:40,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 23:52:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 23:52:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 23:52:40,218 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 23:52:40,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 23:52:40,219 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 23:52:40,219 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 23:52:40,220 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-15 23:52:40,220 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-15 23:52:40,220 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 23:52:40,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 23:52:40,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 23:52:40,223 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 23:52:40,595 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 23:52:40,595 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 23:52:40,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:52:40 BoogieIcfgContainer [2020-09-15 23:52:40,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 23:52:40,602 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 23:52:40,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 23:52:40,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 23:52:40,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 11:52:39" (1/3) ... [2020-09-15 23:52:40,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c18669e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:52:40, skipping insertion in model container [2020-09-15 23:52:40,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:52:40" (2/3) ... [2020-09-15 23:52:40,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c18669e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:52:40, skipping insertion in model container [2020-09-15 23:52:40,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:52:40" (3/3) ... [2020-09-15 23:52:40,611 INFO L109 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-09-15 23:52:40,623 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 23:52:40,624 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 23:52:40,634 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 23:52:40,635 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 23:52:40,671 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,676 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,676 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,676 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,677 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,677 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,678 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,679 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,679 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,679 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,680 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,680 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,681 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,681 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,681 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,688 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,689 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,689 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,699 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,699 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,700 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,700 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,704 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,704 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,704 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,705 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:52:40,727 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-15 23:52:40,751 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 23:52:40,751 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 23:52:40,751 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 23:52:40,752 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 23:52:40,752 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 23:52:40,752 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 23:52:40,752 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 23:52:40,752 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 23:52:40,770 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 75 places, 67 transitions, 149 flow [2020-09-15 23:52:40,772 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-09-15 23:52:40,823 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-09-15 23:52:40,823 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:52:40,829 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-15 23:52:40,832 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 75 places, 67 transitions, 149 flow [2020-09-15 23:52:40,855 INFO L129 PetriNetUnfolder]: 2/64 cut-off events. [2020-09-15 23:52:40,855 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:52:40,856 INFO L80 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2020-09-15 23:52:40,858 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1178 [2020-09-15 23:52:40,860 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 23:52:42,367 INFO L206 etLargeBlockEncoding]: Checked pairs total: 1818 [2020-09-15 23:52:42,367 INFO L214 etLargeBlockEncoding]: Total number of compositions: 52 [2020-09-15 23:52:42,372 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 30 places, 20 transitions, 55 flow [2020-09-15 23:52:42,397 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 226 states. [2020-09-15 23:52:42,400 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states. [2020-09-15 23:52:42,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-15 23:52:42,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:52:42,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:52:42,411 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:52:42,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:52:42,418 INFO L82 PathProgramCache]: Analyzing trace with hash -540517404, now seen corresponding path program 1 times [2020-09-15 23:52:42,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:52:42,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137270971] [2020-09-15 23:52:42,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:52:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:52:42,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:52:42,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137270971] [2020-09-15 23:52:42,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:52:42,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:52:42,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [310470040] [2020-09-15 23:52:42,745 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:52:42,750 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:52:42,769 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-15 23:52:42,769 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:52:42,771 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:52:42,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:52:42,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:52:42,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:52:42,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:52:42,795 INFO L87 Difference]: Start difference. First operand 226 states. Second operand 3 states. [2020-09-15 23:52:42,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:52:42,838 INFO L93 Difference]: Finished difference Result 220 states and 612 transitions. [2020-09-15 23:52:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:52:42,840 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-15 23:52:42,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:52:42,859 INFO L225 Difference]: With dead ends: 220 [2020-09-15 23:52:42,859 INFO L226 Difference]: Without dead ends: 172 [2020-09-15 23:52:42,862 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 [2020-09-15 23:52:42,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-09-15 23:52:42,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-09-15 23:52:42,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-15 23:52:42,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 460 transitions. [2020-09-15 23:52:42,934 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 460 transitions. Word has length 8 [2020-09-15 23:52:42,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:52:42,936 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 460 transitions. [2020-09-15 23:52:42,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:52:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 460 transitions. [2020-09-15 23:52:42,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-15 23:52:42,938 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:52:42,938 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:52:42,938 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 23:52:42,938 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:52:42,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:52:42,939 INFO L82 PathProgramCache]: Analyzing trace with hash 533202091, now seen corresponding path program 1 times [2020-09-15 23:52:42,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:52:42,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285753048] [2020-09-15 23:52:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:52:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:52:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:52:43,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285753048] [2020-09-15 23:52:43,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:52:43,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-15 23:52:43,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [181960933] [2020-09-15 23:52:43,056 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:52:43,057 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:52:43,060 INFO L274 McrAutomatonBuilder]: Finished intersection with 15 states and 19 transitions. [2020-09-15 23:52:43,060 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:52:43,126 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:52:43,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:52:43,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:52:43,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:52:43,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:52:43,129 INFO L87 Difference]: Start difference. First operand 172 states and 460 transitions. Second operand 3 states. [2020-09-15 23:52:43,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:52:43,142 INFO L93 Difference]: Finished difference Result 163 states and 430 transitions. [2020-09-15 23:52:43,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:52:43,143 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-15 23:52:43,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:52:43,146 INFO L225 Difference]: With dead ends: 163 [2020-09-15 23:52:43,147 INFO L226 Difference]: Without dead ends: 163 [2020-09-15 23:52:43,148 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:52:43,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-09-15 23:52:43,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-09-15 23:52:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-09-15 23:52:43,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 430 transitions. [2020-09-15 23:52:43,169 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 430 transitions. Word has length 9 [2020-09-15 23:52:43,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:52:43,169 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 430 transitions. [2020-09-15 23:52:43,170 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:52:43,170 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 430 transitions. [2020-09-15 23:52:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-15 23:52:43,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:52:43,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:52:43,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 23:52:43,172 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:52:43,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:52:43,173 INFO L82 PathProgramCache]: Analyzing trace with hash -650627585, now seen corresponding path program 1 times [2020-09-15 23:52:43,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:52:43,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356161641] [2020-09-15 23:52:43,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:52:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:52:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:52:43,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356161641] [2020-09-15 23:52:43,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:52:43,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:52:43,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1780007405] [2020-09-15 23:52:43,262 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:52:43,263 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:52:43,266 INFO L274 McrAutomatonBuilder]: Finished intersection with 19 states and 27 transitions. [2020-09-15 23:52:43,266 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:52:43,331 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:52:43,332 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:52:43,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:52:43,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:52:43,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:52:43,333 INFO L87 Difference]: Start difference. First operand 163 states and 430 transitions. Second operand 4 states. [2020-09-15 23:52:43,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:52:43,374 INFO L93 Difference]: Finished difference Result 218 states and 560 transitions. [2020-09-15 23:52:43,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-15 23:52:43,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-15 23:52:43,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:52:43,376 INFO L225 Difference]: With dead ends: 218 [2020-09-15 23:52:43,377 INFO L226 Difference]: Without dead ends: 146 [2020-09-15 23:52:43,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:52:43,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-09-15 23:52:43,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-09-15 23:52:43,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-09-15 23:52:43,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 370 transitions. [2020-09-15 23:52:43,393 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 370 transitions. Word has length 10 [2020-09-15 23:52:43,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:52:43,393 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 370 transitions. [2020-09-15 23:52:43,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:52:43,393 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 370 transitions. [2020-09-15 23:52:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 23:52:43,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:52:43,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:52:43,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 23:52:43,395 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:52:43,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:52:43,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1306080051, now seen corresponding path program 1 times [2020-09-15 23:52:43,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:52:43,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231164988] [2020-09-15 23:52:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:52:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:52:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:52:43,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231164988] [2020-09-15 23:52:43,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:52:43,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:52:43,535 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2128153721] [2020-09-15 23:52:43,538 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:52:43,539 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:52:43,542 INFO L274 McrAutomatonBuilder]: Finished intersection with 27 states and 45 transitions. [2020-09-15 23:52:43,542 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:52:43,583 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:52:43,618 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:52:43,636 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:52:43,664 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:52:43,695 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:52:43,737 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2109#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-15 23:52:43,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:52:43,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:52:43,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:52:43,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:52:43,738 INFO L87 Difference]: Start difference. First operand 146 states and 370 transitions. Second operand 5 states. [2020-09-15 23:52:43,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:52:43,816 INFO L93 Difference]: Finished difference Result 135 states and 311 transitions. [2020-09-15 23:52:43,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:52:43,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-15 23:52:43,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:52:43,819 INFO L225 Difference]: With dead ends: 135 [2020-09-15 23:52:43,819 INFO L226 Difference]: Without dead ends: 93 [2020-09-15 23:52:43,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:52:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-15 23:52:43,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-09-15 23:52:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-09-15 23:52:43,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 192 transitions. [2020-09-15 23:52:43,827 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 192 transitions. Word has length 11 [2020-09-15 23:52:43,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:52:43,827 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 192 transitions. [2020-09-15 23:52:43,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:52:43,828 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 192 transitions. [2020-09-15 23:52:43,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 23:52:43,829 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:52:43,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:52:43,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 23:52:43,829 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:52:43,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:52:43,830 INFO L82 PathProgramCache]: Analyzing trace with hash 589619789, now seen corresponding path program 1 times [2020-09-15 23:52:43,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:52:43,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830814717] [2020-09-15 23:52:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:52:43,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:52:43,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:52:43,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830814717] [2020-09-15 23:52:43,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:52:43,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:52:43,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [441263524] [2020-09-15 23:52:43,912 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:52:43,914 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:52:43,916 INFO L274 McrAutomatonBuilder]: Finished intersection with 20 states and 25 transitions. [2020-09-15 23:52:43,917 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:52:43,922 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:52:43,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:52:43,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:52:43,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:52:43,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:52:43,924 INFO L87 Difference]: Start difference. First operand 93 states and 192 transitions. Second operand 3 states. [2020-09-15 23:52:43,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:52:43,934 INFO L93 Difference]: Finished difference Result 110 states and 218 transitions. [2020-09-15 23:52:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:52:43,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-15 23:52:43,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:52:43,935 INFO L225 Difference]: With dead ends: 110 [2020-09-15 23:52:43,936 INFO L226 Difference]: Without dead ends: 88 [2020-09-15 23:52:43,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:52:43,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-15 23:52:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-09-15 23:52:43,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-15 23:52:43,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 169 transitions. [2020-09-15 23:52:43,942 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 169 transitions. Word has length 13 [2020-09-15 23:52:43,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:52:43,942 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 169 transitions. [2020-09-15 23:52:43,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:52:43,943 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 169 transitions. [2020-09-15 23:52:43,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 23:52:43,944 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:52:43,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:52:43,944 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 23:52:43,944 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:52:43,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:52:43,945 INFO L82 PathProgramCache]: Analyzing trace with hash 205369494, now seen corresponding path program 1 times [2020-09-15 23:52:43,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:52:43,945 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407026656] [2020-09-15 23:52:43,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:52:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:52:43,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:52:43,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407026656] [2020-09-15 23:52:43,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:52:43,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:52:43,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1517863494] [2020-09-15 23:52:43,991 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:52:43,992 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:52:43,997 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 64 transitions. [2020-09-15 23:52:43,997 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:52:44,004 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:52:44,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-15 23:52:44,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:52:44,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-15 23:52:44,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:52:44,005 INFO L87 Difference]: Start difference. First operand 86 states and 169 transitions. Second operand 3 states. [2020-09-15 23:52:44,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:52:44,016 INFO L93 Difference]: Finished difference Result 104 states and 195 transitions. [2020-09-15 23:52:44,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-15 23:52:44,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-15 23:52:44,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:52:44,017 INFO L225 Difference]: With dead ends: 104 [2020-09-15 23:52:44,017 INFO L226 Difference]: Without dead ends: 66 [2020-09-15 23:52:44,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-15 23:52:44,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-15 23:52:44,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-09-15 23:52:44,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-15 23:52:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 111 transitions. [2020-09-15 23:52:44,022 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 111 transitions. Word has length 14 [2020-09-15 23:52:44,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:52:44,022 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 111 transitions. [2020-09-15 23:52:44,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-15 23:52:44,023 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 111 transitions. [2020-09-15 23:52:44,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 23:52:44,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:52:44,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:52:44,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 23:52:44,024 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:52:44,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:52:44,025 INFO L82 PathProgramCache]: Analyzing trace with hash -610616562, now seen corresponding path program 2 times [2020-09-15 23:52:44,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:52:44,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080071445] [2020-09-15 23:52:44,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:52:44,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:52:44,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:52:44,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080071445] [2020-09-15 23:52:44,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:52:44,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:52:44,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1853194739] [2020-09-15 23:52:44,078 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:52:44,080 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:52:44,085 INFO L274 McrAutomatonBuilder]: Finished intersection with 35 states and 56 transitions. [2020-09-15 23:52:44,086 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:52:44,109 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:52:44,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:52:44,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:52:44,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:52:44,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:52:44,110 INFO L87 Difference]: Start difference. First operand 65 states and 111 transitions. Second operand 4 states. [2020-09-15 23:52:44,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:52:44,132 INFO L93 Difference]: Finished difference Result 71 states and 116 transitions. [2020-09-15 23:52:44,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:52:44,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-15 23:52:44,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:52:44,133 INFO L225 Difference]: With dead ends: 71 [2020-09-15 23:52:44,133 INFO L226 Difference]: Without dead ends: 64 [2020-09-15 23:52:44,134 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:52:44,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-15 23:52:44,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-09-15 23:52:44,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-15 23:52:44,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 106 transitions. [2020-09-15 23:52:44,138 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 106 transitions. Word has length 14 [2020-09-15 23:52:44,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:52:44,138 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 106 transitions. [2020-09-15 23:52:44,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:52:44,139 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 106 transitions. [2020-09-15 23:52:44,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 23:52:44,140 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:52:44,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:52:44,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 23:52:44,140 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:52:44,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:52:44,141 INFO L82 PathProgramCache]: Analyzing trace with hash -375565572, now seen corresponding path program 3 times [2020-09-15 23:52:44,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:52:44,141 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936064883] [2020-09-15 23:52:44,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:52:44,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:52:44,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:52:44,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936064883] [2020-09-15 23:52:44,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:52:44,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-15 23:52:44,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [131987824] [2020-09-15 23:52:44,241 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:52:44,242 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:52:44,248 INFO L274 McrAutomatonBuilder]: Finished intersection with 48 states and 82 transitions. [2020-09-15 23:52:44,248 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:52:44,277 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:52:44,365 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3166#(<= ~__unbuffered_cnt~0 0)] [2020-09-15 23:52:44,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-15 23:52:44,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:52:44,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-15 23:52:44,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:52:44,366 INFO L87 Difference]: Start difference. First operand 63 states and 106 transitions. Second operand 7 states. [2020-09-15 23:52:44,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:52:44,400 INFO L93 Difference]: Finished difference Result 58 states and 100 transitions. [2020-09-15 23:52:44,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 23:52:44,401 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2020-09-15 23:52:44,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:52:44,401 INFO L225 Difference]: With dead ends: 58 [2020-09-15 23:52:44,401 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 23:52:44,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-09-15 23:52:44,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 23:52:44,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 23:52:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 23:52:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 23:52:44,403 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-09-15 23:52:44,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:52:44,403 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 23:52:44,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-15 23:52:44,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 23:52:44,404 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 23:52:44,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 23:52:44,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 11:52:44 BasicIcfg [2020-09-15 23:52:44,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 23:52:44,413 INFO L168 Benchmark]: Toolchain (without parser) took 5224.18 ms. Allocated memory was 146.8 MB in the beginning and 244.8 MB in the end (delta: 98.0 MB). Free memory was 102.0 MB in the beginning and 137.6 MB in the end (delta: -35.6 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. [2020-09-15 23:52:44,414 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-15 23:52:44,415 INFO L168 Benchmark]: CACSL2BoogieTranslator took 850.77 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 101.3 MB in the beginning and 161.2 MB in the end (delta: -59.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-15 23:52:44,416 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.84 ms. Allocated memory is still 204.5 MB. Free memory was 161.2 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-15 23:52:44,416 INFO L168 Benchmark]: Boogie Preprocessor took 32.62 ms. Allocated memory is still 204.5 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-15 23:52:44,417 INFO L168 Benchmark]: RCFGBuilder took 459.94 ms. Allocated memory is still 204.5 MB. Free memory was 157.9 MB in the beginning and 136.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. [2020-09-15 23:52:44,418 INFO L168 Benchmark]: TraceAbstraction took 3806.80 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 135.5 MB in the beginning and 137.6 MB in the end (delta: -2.1 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. [2020-09-15 23:52:44,423 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 850.77 ms. Allocated memory was 146.8 MB in the beginning and 204.5 MB in the end (delta: 57.7 MB). Free memory was 101.3 MB in the beginning and 161.2 MB in the end (delta: -59.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.84 ms. Allocated memory is still 204.5 MB. Free memory was 161.2 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 32.62 ms. Allocated memory is still 204.5 MB. Free memory was 159.2 MB in the beginning and 157.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 459.94 ms. Allocated memory is still 204.5 MB. Free memory was 157.9 MB in the beginning and 136.2 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3806.80 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 135.5 MB in the beginning and 137.6 MB in the end (delta: -2.1 MB). Peak memory consumption was 38.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 75 ProgramPointsBefore, 30 ProgramPointsAfterwards, 67 TransitionsBefore, 20 TransitionsAfterwards, 1178 CoEnabledTransitionPairs, 6 FixpointIterations, 12 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 576 VarBasedMoverChecksPositive, 18 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 1818 CheckedPairsTotal, 52 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 66 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 147 SDtfs, 87 SDslu, 166 SDs, 0 SdLazy, 78 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 106 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=226occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 4 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 93 NumberOfCodeBlocks, 93 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 85 ConstructedInterpolants, 0 QuantifiedInterpolants, 2229 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...