/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-bf4350c [2020-09-16 23:45:27,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-16 23:45:27,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-16 23:45:27,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-16 23:45:27,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-16 23:45:27,320 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-16 23:45:27,322 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-16 23:45:27,326 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-16 23:45:27,328 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-16 23:45:27,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-16 23:45:27,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-16 23:45:27,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-16 23:45:27,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-16 23:45:27,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-16 23:45:27,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-16 23:45:27,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-16 23:45:27,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-16 23:45:27,347 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-16 23:45:27,349 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-16 23:45:27,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-16 23:45:27,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-16 23:45:27,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-16 23:45:27,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-16 23:45:27,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-16 23:45:27,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-16 23:45:27,364 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-16 23:45:27,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-16 23:45:27,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-16 23:45:27,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-16 23:45:27,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-16 23:45:27,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-16 23:45:27,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-16 23:45:27,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-16 23:45:27,370 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-16 23:45:27,371 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-16 23:45:27,371 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-16 23:45:27,372 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-16 23:45:27,372 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-16 23:45:27,373 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-16 23:45:27,374 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-16 23:45:27,374 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-16 23:45:27,375 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-16 23:45:27,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-16 23:45:27,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-16 23:45:27,402 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-16 23:45:27,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-16 23:45:27,402 INFO L138 SettingsManager]: * Use SBE=true [2020-09-16 23:45:27,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-16 23:45:27,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-16 23:45:27,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-16 23:45:27,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-16 23:45:27,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-16 23:45:27,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-16 23:45:27,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-16 23:45:27,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-16 23:45:27,404 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-16 23:45:27,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-16 23:45:27,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-16 23:45:27,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-16 23:45:27,405 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-16 23:45:27,405 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-16 23:45:27,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-16 23:45:27,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-16 23:45:27,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:45:27,406 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-16 23:45:27,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-16 23:45:27,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-16 23:45:27,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-16 23:45:27,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-16 23:45:27,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-16 23:45:27,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-16 23:45:27,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-16 23:45:27,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-16 23:45:27,865 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-16 23:45:27,869 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-16 23:45:27,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-16 23:45:27,871 INFO L275 PluginConnector]: CDTParser initialized [2020-09-16 23:45:27,873 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-09-16 23:45:27,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70ca765fa/60c8ce63803c44e98b0d6df0da4e306f/FLAGb75c4d71c [2020-09-16 23:45:28,594 INFO L306 CDTParser]: Found 1 translation units. [2020-09-16 23:45:28,595 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe011_tso.oepc.i [2020-09-16 23:45:28,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70ca765fa/60c8ce63803c44e98b0d6df0da4e306f/FLAGb75c4d71c [2020-09-16 23:45:28,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70ca765fa/60c8ce63803c44e98b0d6df0da4e306f [2020-09-16 23:45:28,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-16 23:45:28,871 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-16 23:45:28,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-16 23:45:28,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-16 23:45:28,877 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-16 23:45:28,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:45:28" (1/1) ... [2020-09-16 23:45:28,883 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4650161a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:28, skipping insertion in model container [2020-09-16 23:45:28,883 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.09 11:45:28" (1/1) ... [2020-09-16 23:45:28,893 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-16 23:45:28,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-16 23:45:29,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:45:29,542 INFO L203 MainTranslator]: Completed pre-run [2020-09-16 23:45:29,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-16 23:45:29,698 INFO L208 MainTranslator]: Completed translation [2020-09-16 23:45:29,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:29 WrapperNode [2020-09-16 23:45:29,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-16 23:45:29,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-16 23:45:29,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-16 23:45:29,702 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-16 23:45:29,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:29" (1/1) ... [2020-09-16 23:45:29,733 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:29" (1/1) ... [2020-09-16 23:45:29,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-16 23:45:29,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-16 23:45:29,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-16 23:45:29,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-16 23:45:29,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:29" (1/1) ... [2020-09-16 23:45:29,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:29" (1/1) ... [2020-09-16 23:45:29,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:29" (1/1) ... [2020-09-16 23:45:29,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:29" (1/1) ... [2020-09-16 23:45:29,780 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:29" (1/1) ... [2020-09-16 23:45:29,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:29" (1/1) ... [2020-09-16 23:45:29,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:29" (1/1) ... [2020-09-16 23:45:29,789 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-16 23:45:29,790 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-16 23:45:29,790 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-16 23:45:29,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-16 23:45:29,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-16 23:45:29,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-16 23:45:29,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-16 23:45:29,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-16 23:45:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-16 23:45:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-16 23:45:29,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-16 23:45:29,878 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-16 23:45:29,878 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-16 23:45:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-16 23:45:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-16 23:45:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-16 23:45:29,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-16 23:45:29,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-16 23:45:29,882 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-16 23:45:30,296 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-16 23:45:30,297 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-16 23:45:30,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:45:30 BoogieIcfgContainer [2020-09-16 23:45:30,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-16 23:45:30,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-16 23:45:30,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-16 23:45:30,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-16 23:45:30,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.09 11:45:28" (1/3) ... [2020-09-16 23:45:30,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:45:30, skipping insertion in model container [2020-09-16 23:45:30,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.09 11:45:29" (2/3) ... [2020-09-16 23:45:30,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.09 11:45:30, skipping insertion in model container [2020-09-16 23:45:30,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.09 11:45:30" (3/3) ... [2020-09-16 23:45:30,313 INFO L109 eAbstractionObserver]: Analyzing ICFG safe011_tso.oepc.i [2020-09-16 23:45:30,323 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-16 23:45:30,323 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-16 23:45:30,333 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-16 23:45:30,334 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-16 23:45:30,363 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,363 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,364 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,364 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,365 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,365 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,365 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,366 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,366 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,366 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,367 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,367 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,367 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,368 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,368 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,368 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,369 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,369 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,374 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,374 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,374 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,375 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,383 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,383 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,384 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,384 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,391 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,392 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,392 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-16 23:45:30,422 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-16 23:45:30,448 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-16 23:45:30,449 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-16 23:45:30,449 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-16 23:45:30,449 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-16 23:45:30,449 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-16 23:45:30,450 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-16 23:45:30,450 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-16 23:45:30,450 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-16 23:45:30,468 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-16 23:45:30,470 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-16 23:45:30,519 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-16 23:45:30,519 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:45:30,526 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 23:45:30,529 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-16 23:45:30,550 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-16 23:45:30,550 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-16 23:45:30,551 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-16 23:45:30,553 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-16 23:45:30,554 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-16 23:45:32,360 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2287 [2020-09-16 23:45:32,360 INFO L214 etLargeBlockEncoding]: Total number of compositions: 56 [2020-09-16 23:45:32,365 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-09-16 23:45:32,392 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-16 23:45:32,395 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-16 23:45:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-16 23:45:32,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:45:32,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:45:32,407 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:45:32,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:45:32,415 INFO L82 PathProgramCache]: Analyzing trace with hash 573122436, now seen corresponding path program 1 times [2020-09-16 23:45:32,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:45:32,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523938144] [2020-09-16 23:45:32,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:45:32,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:45:32,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:45:32,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523938144] [2020-09-16 23:45:32,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:45:32,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:45:32,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789379300] [2020-09-16 23:45:32,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:45:32,703 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:45:32,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:45:32,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:45:32,726 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-16 23:45:32,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:45:32,781 INFO L93 Difference]: Finished difference Result 290 states and 834 transitions. [2020-09-16 23:45:32,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:45:32,784 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-16 23:45:32,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:45:32,802 INFO L225 Difference]: With dead ends: 290 [2020-09-16 23:45:32,802 INFO L226 Difference]: Without dead ends: 226 [2020-09-16 23:45:32,804 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 [2020-09-16 23:45:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-09-16 23:45:32,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2020-09-16 23:45:32,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 226 states. [2020-09-16 23:45:32,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 626 transitions. [2020-09-16 23:45:32,883 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 626 transitions. Word has length 8 [2020-09-16 23:45:32,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:45:32,884 INFO L479 AbstractCegarLoop]: Abstraction has 226 states and 626 transitions. [2020-09-16 23:45:32,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:45:32,885 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 626 transitions. [2020-09-16 23:45:32,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-16 23:45:32,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:45:32,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:45:32,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-16 23:45:32,887 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:45:32,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:45:32,888 INFO L82 PathProgramCache]: Analyzing trace with hash 572259518, now seen corresponding path program 1 times [2020-09-16 23:45:32,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:45:32,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301597807] [2020-09-16 23:45:32,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:45:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:45:33,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:45:33,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301597807] [2020-09-16 23:45:33,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:45:33,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:45:33,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677753325] [2020-09-16 23:45:33,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:45:33,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:45:33,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:45:33,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:45:33,029 INFO L87 Difference]: Start difference. First operand 226 states and 626 transitions. Second operand 3 states. [2020-09-16 23:45:33,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:45:33,061 INFO L93 Difference]: Finished difference Result 220 states and 604 transitions. [2020-09-16 23:45:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:45:33,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-16 23:45:33,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:45:33,068 INFO L225 Difference]: With dead ends: 220 [2020-09-16 23:45:33,068 INFO L226 Difference]: Without dead ends: 220 [2020-09-16 23:45:33,068 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 [2020-09-16 23:45:33,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-09-16 23:45:33,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 220. [2020-09-16 23:45:33,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-09-16 23:45:33,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 604 transitions. [2020-09-16 23:45:33,099 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 604 transitions. Word has length 9 [2020-09-16 23:45:33,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:45:33,099 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 604 transitions. [2020-09-16 23:45:33,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:45:33,100 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 604 transitions. [2020-09-16 23:45:33,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 23:45:33,101 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:45:33,101 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:45:33,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-16 23:45:33,102 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:45:33,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:45:33,102 INFO L82 PathProgramCache]: Analyzing trace with hash 1053246614, now seen corresponding path program 1 times [2020-09-16 23:45:33,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:45:33,103 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874394906] [2020-09-16 23:45:33,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:45:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:45:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:45:33,173 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874394906] [2020-09-16 23:45:33,174 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:45:33,174 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:45:33,174 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965876787] [2020-09-16 23:45:33,175 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:45:33,175 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:45:33,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:45:33,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:45:33,176 INFO L87 Difference]: Start difference. First operand 220 states and 604 transitions. Second operand 3 states. [2020-09-16 23:45:33,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:45:33,191 INFO L93 Difference]: Finished difference Result 296 states and 766 transitions. [2020-09-16 23:45:33,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:45:33,193 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-16 23:45:33,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:45:33,196 INFO L225 Difference]: With dead ends: 296 [2020-09-16 23:45:33,197 INFO L226 Difference]: Without dead ends: 236 [2020-09-16 23:45:33,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:45:33,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-09-16 23:45:33,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 212. [2020-09-16 23:45:33,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-16 23:45:33,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 548 transitions. [2020-09-16 23:45:33,215 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 548 transitions. Word has length 10 [2020-09-16 23:45:33,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:45:33,215 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 548 transitions. [2020-09-16 23:45:33,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:45:33,216 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 548 transitions. [2020-09-16 23:45:33,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-16 23:45:33,217 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:45:33,217 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:45:33,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-16 23:45:33,218 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:45:33,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:45:33,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1826039448, now seen corresponding path program 1 times [2020-09-16 23:45:33,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:45:33,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572122915] [2020-09-16 23:45:33,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:45:33,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:45:33,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:45:33,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572122915] [2020-09-16 23:45:33,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:45:33,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-16 23:45:33,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419388470] [2020-09-16 23:45:33,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:45:33,299 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:45:33,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:45:33,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:45:33,300 INFO L87 Difference]: Start difference. First operand 212 states and 548 transitions. Second operand 3 states. [2020-09-16 23:45:33,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:45:33,308 INFO L93 Difference]: Finished difference Result 203 states and 518 transitions. [2020-09-16 23:45:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:45:33,309 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-16 23:45:33,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:45:33,311 INFO L225 Difference]: With dead ends: 203 [2020-09-16 23:45:33,311 INFO L226 Difference]: Without dead ends: 203 [2020-09-16 23:45:33,311 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 [2020-09-16 23:45:33,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-09-16 23:45:33,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-09-16 23:45:33,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-16 23:45:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 518 transitions. [2020-09-16 23:45:33,324 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 518 transitions. Word has length 10 [2020-09-16 23:45:33,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:45:33,324 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 518 transitions. [2020-09-16 23:45:33,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:45:33,325 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 518 transitions. [2020-09-16 23:45:33,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-16 23:45:33,326 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:45:33,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:45:33,326 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-16 23:45:33,326 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:45:33,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:45:33,327 INFO L82 PathProgramCache]: Analyzing trace with hash -772648785, now seen corresponding path program 1 times [2020-09-16 23:45:33,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:45:33,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724249179] [2020-09-16 23:45:33,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:45:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:45:33,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:45:33,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724249179] [2020-09-16 23:45:33,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:45:33,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:45:33,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272045830] [2020-09-16 23:45:33,396 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:45:33,396 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:45:33,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:45:33,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:45:33,397 INFO L87 Difference]: Start difference. First operand 203 states and 518 transitions. Second operand 4 states. [2020-09-16 23:45:33,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:45:33,430 INFO L93 Difference]: Finished difference Result 240 states and 585 transitions. [2020-09-16 23:45:33,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-16 23:45:33,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-16 23:45:33,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:45:33,432 INFO L225 Difference]: With dead ends: 240 [2020-09-16 23:45:33,433 INFO L226 Difference]: Without dead ends: 144 [2020-09-16 23:45:33,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:45:33,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-09-16 23:45:33,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2020-09-16 23:45:33,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-09-16 23:45:33,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 331 transitions. [2020-09-16 23:45:33,441 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 331 transitions. Word has length 11 [2020-09-16 23:45:33,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:45:33,442 INFO L479 AbstractCegarLoop]: Abstraction has 144 states and 331 transitions. [2020-09-16 23:45:33,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:45:33,442 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 331 transitions. [2020-09-16 23:45:33,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-16 23:45:33,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:45:33,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:45:33,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-16 23:45:33,443 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:45:33,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:45:33,444 INFO L82 PathProgramCache]: Analyzing trace with hash 389651423, now seen corresponding path program 1 times [2020-09-16 23:45:33,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:45:33,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414750564] [2020-09-16 23:45:33,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:45:33,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:45:33,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:45:33,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414750564] [2020-09-16 23:45:33,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:45:33,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:45:33,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534204387] [2020-09-16 23:45:33,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-16 23:45:33,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:45:33,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-16 23:45:33,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-16 23:45:33,529 INFO L87 Difference]: Start difference. First operand 144 states and 331 transitions. Second operand 4 states. [2020-09-16 23:45:33,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:45:33,566 INFO L93 Difference]: Finished difference Result 164 states and 345 transitions. [2020-09-16 23:45:33,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-16 23:45:33,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-16 23:45:33,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:45:33,568 INFO L225 Difference]: With dead ends: 164 [2020-09-16 23:45:33,568 INFO L226 Difference]: Without dead ends: 124 [2020-09-16 23:45:33,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:45:33,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-16 23:45:33,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-09-16 23:45:33,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-09-16 23:45:33,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 261 transitions. [2020-09-16 23:45:33,575 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 261 transitions. Word has length 12 [2020-09-16 23:45:33,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:45:33,576 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 261 transitions. [2020-09-16 23:45:33,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-16 23:45:33,576 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 261 transitions. [2020-09-16 23:45:33,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-16 23:45:33,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:45:33,577 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:45:33,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-16 23:45:33,578 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:45:33,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:45:33,578 INFO L82 PathProgramCache]: Analyzing trace with hash -806373780, now seen corresponding path program 1 times [2020-09-16 23:45:33,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:45:33,579 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083558207] [2020-09-16 23:45:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:45:33,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:45:33,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:45:33,663 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083558207] [2020-09-16 23:45:33,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:45:33,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-16 23:45:33,664 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588909444] [2020-09-16 23:45:33,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-16 23:45:33,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:45:33,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-16 23:45:33,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-16 23:45:33,666 INFO L87 Difference]: Start difference. First operand 124 states and 261 transitions. Second operand 5 states. [2020-09-16 23:45:33,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:45:33,714 INFO L93 Difference]: Finished difference Result 122 states and 237 transitions. [2020-09-16 23:45:33,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 23:45:33,715 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-16 23:45:33,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:45:33,716 INFO L225 Difference]: With dead ends: 122 [2020-09-16 23:45:33,716 INFO L226 Difference]: Without dead ends: 97 [2020-09-16 23:45:33,717 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:45:33,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-16 23:45:33,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-09-16 23:45:33,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-09-16 23:45:33,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 186 transitions. [2020-09-16 23:45:33,721 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 186 transitions. Word has length 13 [2020-09-16 23:45:33,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:45:33,721 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 186 transitions. [2020-09-16 23:45:33,721 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-16 23:45:33,722 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 186 transitions. [2020-09-16 23:45:33,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-16 23:45:33,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:45:33,723 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:45:33,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-16 23:45:33,723 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:45:33,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:45:33,724 INFO L82 PathProgramCache]: Analyzing trace with hash -1341104517, now seen corresponding path program 1 times [2020-09-16 23:45:33,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:45:33,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624064757] [2020-09-16 23:45:33,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:45:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:45:33,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:45:33,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624064757] [2020-09-16 23:45:33,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:45:33,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-16 23:45:33,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308962221] [2020-09-16 23:45:33,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-16 23:45:33,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:45:33,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-16 23:45:33,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:45:33,768 INFO L87 Difference]: Start difference. First operand 97 states and 186 transitions. Second operand 3 states. [2020-09-16 23:45:33,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:45:33,780 INFO L93 Difference]: Finished difference Result 101 states and 184 transitions. [2020-09-16 23:45:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-16 23:45:33,780 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-16 23:45:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:45:33,781 INFO L225 Difference]: With dead ends: 101 [2020-09-16 23:45:33,782 INFO L226 Difference]: Without dead ends: 73 [2020-09-16 23:45:33,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-16 23:45:33,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-16 23:45:33,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-09-16 23:45:33,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-16 23:45:33,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 124 transitions. [2020-09-16 23:45:33,787 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 124 transitions. Word has length 14 [2020-09-16 23:45:33,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:45:33,787 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 124 transitions. [2020-09-16 23:45:33,787 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-16 23:45:33,788 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 124 transitions. [2020-09-16 23:45:33,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-16 23:45:33,788 INFO L414 BasicCegarLoop]: Found error trace [2020-09-16 23:45:33,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-16 23:45:33,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-16 23:45:33,789 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-16 23:45:33,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-16 23:45:33,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1362110025, now seen corresponding path program 1 times [2020-09-16 23:45:33,790 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-16 23:45:33,790 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617656217] [2020-09-16 23:45:33,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-16 23:45:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-16 23:45:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-16 23:45:33,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617656217] [2020-09-16 23:45:33,880 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-16 23:45:33,881 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-16 23:45:33,881 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342870265] [2020-09-16 23:45:33,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-16 23:45:33,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-16 23:45:33,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-16 23:45:33,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-16 23:45:33,882 INFO L87 Difference]: Start difference. First operand 72 states and 124 transitions. Second operand 6 states. [2020-09-16 23:45:33,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-16 23:45:33,924 INFO L93 Difference]: Finished difference Result 67 states and 118 transitions. [2020-09-16 23:45:33,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-16 23:45:33,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-16 23:45:33,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-16 23:45:33,925 INFO L225 Difference]: With dead ends: 67 [2020-09-16 23:45:33,925 INFO L226 Difference]: Without dead ends: 0 [2020-09-16 23:45:33,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-16 23:45:33,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-16 23:45:33,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-16 23:45:33,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-16 23:45:33,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-16 23:45:33,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-09-16 23:45:33,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-16 23:45:33,927 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-16 23:45:33,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-16 23:45:33,927 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-16 23:45:33,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-16 23:45:33,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-16 23:45:33,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.09 11:45:33 BasicIcfg [2020-09-16 23:45:33,933 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-16 23:45:33,936 INFO L168 Benchmark]: Toolchain (without parser) took 5066.24 ms. Allocated memory was 140.0 MB in the beginning and 245.4 MB in the end (delta: 105.4 MB). Free memory was 101.8 MB in the beginning and 137.9 MB in the end (delta: -36.2 MB). Peak memory consumption was 69.2 MB. Max. memory is 7.1 GB. [2020-09-16 23:45:33,937 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-16 23:45:33,938 INFO L168 Benchmark]: CACSL2BoogieTranslator took 827.40 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 157.7 MB in the end (delta: -56.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-16 23:45:33,939 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.23 ms. Allocated memory is still 202.9 MB. Free memory was 157.7 MB in the beginning and 154.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-09-16 23:45:33,940 INFO L168 Benchmark]: Boogie Preprocessor took 29.97 ms. Allocated memory is still 202.9 MB. Free memory was 154.8 MB in the beginning and 153.9 MB in the end (delta: 964.3 kB). Peak memory consumption was 964.3 kB. Max. memory is 7.1 GB. [2020-09-16 23:45:33,940 INFO L168 Benchmark]: RCFGBuilder took 512.56 ms. Allocated memory is still 202.9 MB. Free memory was 153.9 MB in the beginning and 131.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-16 23:45:33,941 INFO L168 Benchmark]: TraceAbstraction took 3628.58 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 130.8 MB in the beginning and 137.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. [2020-09-16 23:45:33,945 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 827.40 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 101.3 MB in the beginning and 157.7 MB in the end (delta: -56.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.23 ms. Allocated memory is still 202.9 MB. Free memory was 157.7 MB in the beginning and 154.8 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.97 ms. Allocated memory is still 202.9 MB. Free memory was 154.8 MB in the beginning and 153.9 MB in the end (delta: 964.3 kB). Peak memory consumption was 964.3 kB. Max. memory is 7.1 GB. * RCFGBuilder took 512.56 ms. Allocated memory is still 202.9 MB. Free memory was 153.9 MB in the beginning and 131.7 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3628.58 ms. Allocated memory was 202.9 MB in the beginning and 245.4 MB in the end (delta: 42.5 MB). Free memory was 130.8 MB in the beginning and 137.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.8s, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 657 VarBasedMoverChecksPositive, 32 VarBasedMoverChecksNegative, 15 SemBasedMoverChecksPositive, 33 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2287 CheckedPairsTotal, 56 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, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 167 SDtfs, 120 SDslu, 173 SDs, 0 SdLazy, 83 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 2893 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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...