/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-b09bf87 [2020-10-16 13:35:44,736 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:35:44,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:35:44,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:35:44,764 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:35:44,765 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:35:44,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:35:44,768 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:35:44,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:35:44,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:35:44,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:35:44,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:35:44,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:35:44,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:35:44,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:35:44,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:35:44,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:35:44,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:35:44,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:35:44,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:35:44,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:35:44,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:35:44,788 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:35:44,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:35:44,791 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:35:44,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:35:44,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:35:44,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:35:44,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:35:44,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:35:44,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:35:44,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:35:44,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:35:44,797 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:35:44,798 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:35:44,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:35:44,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:35:44,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:35:44,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:35:44,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:35:44,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:35:44,801 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 [2020-10-16 13:35:44,825 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:35:44,825 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:35:44,829 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:35:44,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:35:44,829 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:35:44,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:35:44,830 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:35:44,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:35:44,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:35:44,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:35:44,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:35:44,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:35:44,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:35:44,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:35:44,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:35:44,832 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:35:44,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:35:44,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:35:44,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:35:44,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:35:44,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:35:44,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:35:44,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:35:44,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:35:44,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:35:44,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:35:44,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:35:44,835 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:35:44,835 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:35:44,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:35:44,835 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:35:45,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:35:45,125 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:35:45,128 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:35:45,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:35:45,130 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:35:45,131 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-10-16 13:35:45,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18e224f31/4029fd3082834afcb8d746e190053f65/FLAGaf55b2ab2 [2020-10-16 13:35:45,660 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:35:45,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-10-16 13:35:45,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18e224f31/4029fd3082834afcb8d746e190053f65/FLAGaf55b2ab2 [2020-10-16 13:35:46,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18e224f31/4029fd3082834afcb8d746e190053f65 [2020-10-16 13:35:46,034 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:35:46,036 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:35:46,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:35:46,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:35:46,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:35:46,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:35:46" (1/1) ... [2020-10-16 13:35:46,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e86d97c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:46, skipping insertion in model container [2020-10-16 13:35:46,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:35:46" (1/1) ... [2020-10-16 13:35:46,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:35:46,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:35:46,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:35:46,559 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:35:46,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:35:46,688 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:35:46,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:46 WrapperNode [2020-10-16 13:35:46,688 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:35:46,689 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:35:46,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:35:46,690 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:35:46,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:46" (1/1) ... [2020-10-16 13:35:46,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:46" (1/1) ... [2020-10-16 13:35:46,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:35:46,738 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:35:46,738 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:35:46,738 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:35:46,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:46" (1/1) ... [2020-10-16 13:35:46,747 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:46" (1/1) ... [2020-10-16 13:35:46,750 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:46" (1/1) ... [2020-10-16 13:35:46,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:46" (1/1) ... [2020-10-16 13:35:46,756 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:46" (1/1) ... [2020-10-16 13:35:46,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:46" (1/1) ... [2020-10-16 13:35:46,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:46" (1/1) ... [2020-10-16 13:35:46,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:35:46,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:35:46,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:35:46,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:35:46,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:46" (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 [2020-10-16 13:35:46,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:35:46,839 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:35:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:35:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:35:46,840 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:35:46,841 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:35:46,841 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:35:46,842 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:35:46,842 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:35:46,843 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:35:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:35:46,843 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:35:46,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:35:46,848 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:35:47,195 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:35:47,196 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:35:47,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:35:47 BoogieIcfgContainer [2020-10-16 13:35:47,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:35:47,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:35:47,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:35:47,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:35:47,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:35:46" (1/3) ... [2020-10-16 13:35:47,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5328091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:35:47, skipping insertion in model container [2020-10-16 13:35:47,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:35:46" (2/3) ... [2020-10-16 13:35:47,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5328091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:35:47, skipping insertion in model container [2020-10-16 13:35:47,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:35:47" (3/3) ... [2020-10-16 13:35:47,207 INFO L111 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-10-16 13:35:47,218 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:35:47,219 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:35:47,226 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:35:47,227 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:35:47,256 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,257 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,257 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,257 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,258 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,259 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,259 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,260 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,260 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,261 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,261 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,262 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,262 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,266 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,267 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,267 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,276 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,276 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,277 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,277 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,293 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,293 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,293 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:35:47,302 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:35:47,319 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 13:35:47,337 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:35:47,338 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:35:47,338 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:35:47,338 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:35:47,338 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:35:47,339 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:35:47,339 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:35:47,339 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:35:47,351 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:35:47,351 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:35:47,353 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 13:35:47,355 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 13:35:47,397 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 13:35:47,398 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:35:47,403 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-10-16 13:35:47,405 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 13:35:48,640 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-16 13:35:48,806 INFO L132 LiptonReduction]: Checked pairs total: 2936 [2020-10-16 13:35:48,806 INFO L134 LiptonReduction]: Total number of compositions: 59 [2020-10-16 13:35:48,814 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-10-16 13:35:48,842 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 13:35:48,844 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 13:35:48,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 13:35:48,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:35:48,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:35:48,853 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:35:48,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:35:48,859 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-10-16 13:35:48,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:35:48,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805003360] [2020-10-16 13:35:48,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:35:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:35:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:35:49,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805003360] [2020-10-16 13:35:49,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:35:49,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 13:35:49,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [147720982] [2020-10-16 13:35:49,078 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:35:49,081 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:35:49,095 INFO L258 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-10-16 13:35:49,095 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:35:49,099 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:35:49,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:35:49,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:35:49,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:35:49,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:35:49,117 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 13:35:49,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:35:49,151 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-10-16 13:35:49,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:35:49,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 13:35:49,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:35:49,167 INFO L225 Difference]: With dead ends: 266 [2020-10-16 13:35:49,167 INFO L226 Difference]: Without dead ends: 202 [2020-10-16 13:35:49,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:35:49,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-16 13:35:49,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-16 13:35:49,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-16 13:35:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-16 13:35:49,231 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-10-16 13:35:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:35:49,232 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-16 13:35:49,232 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:35:49,232 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-16 13:35:49,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:35:49,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:35:49,234 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:35:49,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:35:49,235 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:35:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:35:49,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-10-16 13:35:49,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:35:49,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170279508] [2020-10-16 13:35:49,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:35:49,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:35:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:35:49,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170279508] [2020-10-16 13:35:49,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:35:49,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:35:49,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [556267343] [2020-10-16 13:35:49,311 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:35:49,312 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:35:49,314 INFO L258 McrAutomatonBuilder]: Finished intersection with 13 states and 14 transitions. [2020-10-16 13:35:49,314 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:35:49,341 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:35:49,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:35:49,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:35:49,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:35:49,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:35:49,344 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-10-16 13:35:49,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:35:49,380 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-10-16 13:35:49,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:35:49,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-10-16 13:35:49,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:35:49,384 INFO L225 Difference]: With dead ends: 254 [2020-10-16 13:35:49,384 INFO L226 Difference]: Without dead ends: 190 [2020-10-16 13:35:49,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:35:49,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-10-16 13:35:49,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-10-16 13:35:49,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-16 13:35:49,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-10-16 13:35:49,403 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-10-16 13:35:49,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:35:49,403 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-10-16 13:35:49,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:35:49,403 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-10-16 13:35:49,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:35:49,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:35:49,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:35:49,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:35:49,405 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:35:49,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:35:49,406 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-10-16 13:35:49,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:35:49,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864659041] [2020-10-16 13:35:49,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:35:49,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:35:49,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:35:49,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864659041] [2020-10-16 13:35:49,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:35:49,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:35:49,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [890069730] [2020-10-16 13:35:49,474 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:35:49,475 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:35:49,478 INFO L258 McrAutomatonBuilder]: Finished intersection with 19 states and 25 transitions. [2020-10-16 13:35:49,478 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:35:49,519 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:35:49,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:35:49,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:35:49,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:35:49,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:35:49,521 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-10-16 13:35:49,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:35:49,551 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-10-16 13:35:49,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:35:49,551 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 13:35:49,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:35:49,553 INFO L225 Difference]: With dead ends: 286 [2020-10-16 13:35:49,553 INFO L226 Difference]: Without dead ends: 178 [2020-10-16 13:35:49,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:35:49,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-16 13:35:49,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-10-16 13:35:49,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-16 13:35:49,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-10-16 13:35:49,567 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-10-16 13:35:49,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:35:49,567 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-10-16 13:35:49,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:35:49,568 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-10-16 13:35:49,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:35:49,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:35:49,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:35:49,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:35:49,570 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:35:49,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:35:49,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-10-16 13:35:49,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:35:49,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005868555] [2020-10-16 13:35:49,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:35:49,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:35:49,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:35:49,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005868555] [2020-10-16 13:35:49,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:35:49,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:35:49,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [738191341] [2020-10-16 13:35:49,618 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:35:49,619 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:35:49,622 INFO L258 McrAutomatonBuilder]: Finished intersection with 21 states and 28 transitions. [2020-10-16 13:35:49,622 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:35:49,650 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:35:49,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 13:35:49,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:35:49,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 13:35:49,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:35:49,652 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-10-16 13:35:49,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:35:49,664 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-10-16 13:35:49,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 13:35:49,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-16 13:35:49,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:35:49,666 INFO L225 Difference]: With dead ends: 174 [2020-10-16 13:35:49,666 INFO L226 Difference]: Without dead ends: 72 [2020-10-16 13:35:49,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 13:35:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-16 13:35:49,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-16 13:35:49,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-16 13:35:49,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-10-16 13:35:49,671 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-10-16 13:35:49,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:35:49,672 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-10-16 13:35:49,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 13:35:49,672 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-10-16 13:35:49,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:35:49,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:35:49,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:35:49,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:35:49,674 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:35:49,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:35:49,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-10-16 13:35:49,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:35:49,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169409695] [2020-10-16 13:35:49,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:35:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:35:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:35:49,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169409695] [2020-10-16 13:35:49,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:35:49,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:35:49,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1296888596] [2020-10-16 13:35:49,749 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:35:49,750 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:35:49,754 INFO L258 McrAutomatonBuilder]: Finished intersection with 33 states and 53 transitions. [2020-10-16 13:35:49,754 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:35:49,773 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:35:49,798 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:35:49,814 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:35:49,829 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:35:49,875 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:35:49,894 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [2916#(not (= 3 ~__unbuffered_cnt~0))] [2020-10-16 13:35:49,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:35:49,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:35:49,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:35:49,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:35:49,895 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 5 states. [2020-10-16 13:35:49,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:35:49,948 INFO L93 Difference]: Finished difference Result 71 states and 136 transitions. [2020-10-16 13:35:49,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:35:49,949 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-16 13:35:49,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:35:49,950 INFO L225 Difference]: With dead ends: 71 [2020-10-16 13:35:49,950 INFO L226 Difference]: Without dead ends: 47 [2020-10-16 13:35:49,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:35:49,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-16 13:35:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-16 13:35:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-16 13:35:49,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-10-16 13:35:49,954 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 13 [2020-10-16 13:35:49,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:35:49,955 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-10-16 13:35:49,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:35:49,955 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-10-16 13:35:49,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:35:49,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:35:49,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:35:49,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:35:49,956 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:35:49,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:35:49,957 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 1 times [2020-10-16 13:35:49,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:35:49,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947758683] [2020-10-16 13:35:49,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:35:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:35:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:35:50,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947758683] [2020-10-16 13:35:50,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:35:50,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:35:50,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1393103375] [2020-10-16 13:35:50,018 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:35:50,019 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:35:50,024 INFO L258 McrAutomatonBuilder]: Finished intersection with 35 states and 54 transitions. [2020-10-16 13:35:50,024 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:35:50,043 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:35:50,087 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3092#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:35:50,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-16 13:35:50,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:35:50,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-16 13:35:50,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:35:50,088 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 7 states. [2020-10-16 13:35:50,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:35:50,137 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-10-16 13:35:50,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:35:50,138 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2020-10-16 13:35:50,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:35:50,139 INFO L225 Difference]: With dead ends: 44 [2020-10-16 13:35:50,139 INFO L226 Difference]: Without dead ends: 38 [2020-10-16 13:35:50,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:35:50,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-16 13:35:50,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-16 13:35:50,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-16 13:35:50,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-10-16 13:35:50,142 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-10-16 13:35:50,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:35:50,142 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-10-16 13:35:50,143 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-16 13:35:50,143 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-10-16 13:35:50,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:35:50,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:35:50,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:35:50,144 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:35:50,144 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:35:50,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:35:50,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 1 times [2020-10-16 13:35:50,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:35:50,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927999073] [2020-10-16 13:35:50,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:35:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:35:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:35:50,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927999073] [2020-10-16 13:35:50,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:35:50,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:35:50,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1184005812] [2020-10-16 13:35:50,189 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:35:50,191 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:35:50,197 INFO L258 McrAutomatonBuilder]: Finished intersection with 39 states and 59 transitions. [2020-10-16 13:35:50,197 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:35:50,227 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:35:50,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:35:50,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:35:50,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:35:50,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:35:50,229 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 4 states. [2020-10-16 13:35:50,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:35:50,238 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-10-16 13:35:50,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 13:35:50,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 13:35:50,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:35:50,239 INFO L225 Difference]: With dead ends: 37 [2020-10-16 13:35:50,239 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:35:50,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:35:50,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:35:50,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:35:50,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:35:50,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:35:50,241 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 13:35:50,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:35:50,241 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:35:50,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:35:50,242 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:35:50,242 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:35:50,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:35:50,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:35:50 BasicIcfg [2020-10-16 13:35:50,246 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:35:50,248 INFO L168 Benchmark]: Toolchain (without parser) took 4212.50 ms. Allocated memory was 147.3 MB in the beginning and 248.0 MB in the end (delta: 100.7 MB). Free memory was 101.7 MB in the beginning and 150.8 MB in the end (delta: -49.0 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:35:50,249 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 13:35:50,250 INFO L168 Benchmark]: CACSL2BoogieTranslator took 652.34 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 101.5 MB in the beginning and 158.9 MB in the end (delta: -57.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-10-16 13:35:50,250 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.95 ms. Allocated memory is still 203.9 MB. Free memory was 158.9 MB in the beginning and 156.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-10-16 13:35:50,251 INFO L168 Benchmark]: Boogie Preprocessor took 31.97 ms. Allocated memory is still 203.9 MB. Free memory was 156.8 MB in the beginning and 154.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 13:35:50,252 INFO L168 Benchmark]: RCFGBuilder took 428.15 ms. Allocated memory is still 203.9 MB. Free memory was 154.8 MB in the beginning and 132.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:35:50,253 INFO L168 Benchmark]: TraceAbstraction took 3046.73 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 131.8 MB in the beginning and 150.8 MB in the end (delta: -18.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-10-16 13:35:50,257 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 652.34 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 101.5 MB in the beginning and 158.9 MB in the end (delta: -57.4 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 47.95 ms. Allocated memory is still 203.9 MB. Free memory was 158.9 MB in the beginning and 156.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.97 ms. Allocated memory is still 203.9 MB. Free memory was 156.8 MB in the beginning and 154.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 428.15 ms. Allocated memory is still 203.9 MB. Free memory was 154.8 MB in the beginning and 132.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3046.73 ms. Allocated memory was 203.9 MB in the beginning and 248.0 MB in the end (delta: 44.0 MB). Free memory was 131.8 MB in the beginning and 150.8 MB in the end (delta: -18.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 680 VarBasedMoverChecksPositive, 24 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 29 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.4s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 2936 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.9s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 140 SDtfs, 100 SDslu, 160 SDs, 0 SdLazy, 99 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 71 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 2433 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...