/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/safe032_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:49:29,511 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:49:29,515 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:49:29,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:49:29,542 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:49:29,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:49:29,545 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:49:29,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:49:29,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:49:29,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:49:29,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:49:29,553 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:49:29,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:49:29,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:49:29,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:49:29,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:49:29,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:49:29,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:49:29,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:49:29,563 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:49:29,565 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:49:29,566 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:49:29,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:49:29,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:49:29,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:49:29,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:49:29,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:49:29,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:49:29,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:49:29,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:49:29,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:49:29,576 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:49:29,577 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:49:29,578 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:49:29,579 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:49:29,579 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:49:29,580 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:49:29,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:49:29,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:49:29,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:49:29,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:49:29,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 15:49:29,616 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:49:29,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:49:29,621 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:49:29,621 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:49:29,621 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:49:29,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:49:29,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:49:29,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:49:29,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:49:29,622 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:49:29,622 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:49:29,622 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:49:29,626 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:49:29,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:49:29,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:49:29,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:49:29,627 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:49:29,627 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:49:29,627 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:49:29,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:49:29,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:49:29,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:49:29,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:49:29,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:49:29,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:49:29,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:49:29,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:49:29,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:49:29,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:49:29,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:49:30,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:49:30,096 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:49:30,101 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:49:30,103 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:49:30,103 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:49:30,105 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-09-11 15:49:30,200 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87c7be07b/04bffe1a3a0d414d93f9c1a280ac1d53/FLAGe74b1f653 [2020-09-11 15:49:30,880 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:49:30,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe032_tso.oepc.i [2020-09-11 15:49:30,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87c7be07b/04bffe1a3a0d414d93f9c1a280ac1d53/FLAGe74b1f653 [2020-09-11 15:49:31,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/87c7be07b/04bffe1a3a0d414d93f9c1a280ac1d53 [2020-09-11 15:49:31,124 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:49:31,131 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:49:31,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:49:31,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:49:31,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:49:31,140 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:49:31" (1/1) ... [2020-09-11 15:49:31,146 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cd2411b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:49:31, skipping insertion in model container [2020-09-11 15:49:31,146 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:49:31" (1/1) ... [2020-09-11 15:49:31,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:49:31,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:49:31,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:49:31,722 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:49:31,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:49:31,882 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:49:31,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:49:31 WrapperNode [2020-09-11 15:49:31,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:49:31,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:49:31,884 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:49:31,884 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:49:31,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:49:31" (1/1) ... [2020-09-11 15:49:31,915 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:49:31" (1/1) ... [2020-09-11 15:49:31,945 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:49:31,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:49:31,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:49:31,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:49:31,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:49:31" (1/1) ... [2020-09-11 15:49:31,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:49:31" (1/1) ... [2020-09-11 15:49:31,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:49:31" (1/1) ... [2020-09-11 15:49:31,962 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:49:31" (1/1) ... [2020-09-11 15:49:31,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:49:31" (1/1) ... [2020-09-11 15:49:31,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:49:31" (1/1) ... [2020-09-11 15:49:31,975 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:49:31" (1/1) ... [2020-09-11 15:49:31,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:49:31,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:49:31,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:49:31,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:49:31,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:49:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:49:32,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:49:32,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:49:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:49:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:49:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:49:32,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:49:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:49:32,071 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:49:32,071 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:49:32,071 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:49:32,071 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:49:32,071 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:49:32,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:49:32,074 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 15:49:32,495 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:49:32,495 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:49:32,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:49:32 BoogieIcfgContainer [2020-09-11 15:49:32,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:49:32,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:49:32,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:49:32,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:49:32,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:49:31" (1/3) ... [2020-09-11 15:49:32,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c67252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:49:32, skipping insertion in model container [2020-09-11 15:49:32,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:49:31" (2/3) ... [2020-09-11 15:49:32,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c67252 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:49:32, skipping insertion in model container [2020-09-11 15:49:32,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:49:32" (3/3) ... [2020-09-11 15:49:32,511 INFO L109 eAbstractionObserver]: Analyzing ICFG safe032_tso.oepc.i [2020-09-11 15:49:32,523 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:49:32,523 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:49:32,534 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:49:32,535 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:49:32,567 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,570 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,570 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,570 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,571 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,571 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,572 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,572 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,572 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,574 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,575 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,575 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,577 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,578 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,578 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,585 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,586 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,586 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,586 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,597 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,597 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,597 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,599 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,608 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,608 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,608 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,608 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:49:32,632 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:49:32,656 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:49:32,656 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:49:32,656 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:49:32,656 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:49:32,657 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:49:32,657 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:49:32,657 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:49:32,657 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:49:32,675 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-11 15:49:32,678 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-11 15:49:32,727 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-11 15:49:32,727 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:49:32,733 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 49 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. [2020-09-11 15:49:32,736 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-11 15:49:32,757 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-11 15:49:32,757 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:49:32,758 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 49 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. [2020-09-11 15:49:32,760 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 15:49:32,762 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:49:34,261 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2365 [2020-09-11 15:49:34,261 INFO L214 etLargeBlockEncoding]: Total number of compositions: 53 [2020-09-11 15:49:34,266 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-09-11 15:49:34,298 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-09-11 15:49:34,301 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-09-11 15:49:34,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:49:34,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:49:34,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:49:34,312 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:49:34,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:49:34,320 INFO L82 PathProgramCache]: Analyzing trace with hash -589225259, now seen corresponding path program 1 times [2020-09-11 15:49:34,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:49:34,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034349750] [2020-09-11 15:49:34,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:49:34,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:49:34,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:49:34,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034349750] [2020-09-11 15:49:34,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:49:34,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:49:34,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266900590] [2020-09-11 15:49:34,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-11 15:49:34,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:49:34,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-11 15:49:34,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 15:49:34,568 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-09-11 15:49:34,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:49:34,604 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-09-11 15:49:34,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-11 15:49:34,606 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-09-11 15:49:34,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:49:34,630 INFO L225 Difference]: With dead ends: 362 [2020-09-11 15:49:34,630 INFO L226 Difference]: Without dead ends: 298 [2020-09-11 15:49:34,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-11 15:49:34,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-09-11 15:49:34,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-09-11 15:49:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-09-11 15:49:34,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-09-11 15:49:34,726 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-09-11 15:49:34,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:49:34,728 INFO L479 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-09-11 15:49:34,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-11 15:49:34,729 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-09-11 15:49:34,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 15:49:34,730 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:49:34,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:49:34,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:49:34,731 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:49:34,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:49:34,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1086118353, now seen corresponding path program 1 times [2020-09-11 15:49:34,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:49:34,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336141741] [2020-09-11 15:49:34,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:49:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:49:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:49:34,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336141741] [2020-09-11 15:49:34,892 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:49:34,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:49:34,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234490397] [2020-09-11 15:49:34,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:49:34,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:49:34,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:49:34,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:49:34,898 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 3 states. [2020-09-11 15:49:34,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:49:34,920 INFO L93 Difference]: Finished difference Result 217 states and 540 transitions. [2020-09-11 15:49:34,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:49:34,920 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 15:49:34,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:49:34,923 INFO L225 Difference]: With dead ends: 217 [2020-09-11 15:49:34,923 INFO L226 Difference]: Without dead ends: 217 [2020-09-11 15:49:34,924 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 [2020-09-11 15:49:34,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-09-11 15:49:34,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2020-09-11 15:49:34,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2020-09-11 15:49:34,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 540 transitions. [2020-09-11 15:49:34,943 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 540 transitions. Word has length 9 [2020-09-11 15:49:34,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:49:34,943 INFO L479 AbstractCegarLoop]: Abstraction has 217 states and 540 transitions. [2020-09-11 15:49:34,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:49:34,943 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 540 transitions. [2020-09-11 15:49:34,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:49:34,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:49:34,945 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:49:34,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:49:34,946 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:49:34,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:49:34,946 INFO L82 PathProgramCache]: Analyzing trace with hash -954674037, now seen corresponding path program 1 times [2020-09-11 15:49:34,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:49:34,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066185168] [2020-09-11 15:49:34,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:49:34,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:49:35,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:49:35,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066185168] [2020-09-11 15:49:35,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:49:35,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:49:35,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386047081] [2020-09-11 15:49:35,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:49:35,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:49:35,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:49:35,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:49:35,038 INFO L87 Difference]: Start difference. First operand 217 states and 540 transitions. Second operand 4 states. [2020-09-11 15:49:35,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:49:35,083 INFO L93 Difference]: Finished difference Result 136 states and 297 transitions. [2020-09-11 15:49:35,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:49:35,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-11 15:49:35,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:49:35,086 INFO L225 Difference]: With dead ends: 136 [2020-09-11 15:49:35,086 INFO L226 Difference]: Without dead ends: 136 [2020-09-11 15:49:35,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:49:35,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-11 15:49:35,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2020-09-11 15:49:35,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-11 15:49:35,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 297 transitions. [2020-09-11 15:49:35,108 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 297 transitions. Word has length 12 [2020-09-11 15:49:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:49:35,109 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 297 transitions. [2020-09-11 15:49:35,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:49:35,109 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 297 transitions. [2020-09-11 15:49:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:49:35,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:49:35,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:49:35,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:49:35,111 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:49:35,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:49:35,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1044268816, now seen corresponding path program 1 times [2020-09-11 15:49:35,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:49:35,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977791635] [2020-09-11 15:49:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:49:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:49:35,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:49:35,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977791635] [2020-09-11 15:49:35,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:49:35,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:49:35,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5100143] [2020-09-11 15:49:35,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:49:35,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:49:35,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:49:35,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:49:35,241 INFO L87 Difference]: Start difference. First operand 136 states and 297 transitions. Second operand 5 states. [2020-09-11 15:49:35,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:49:35,275 INFO L93 Difference]: Finished difference Result 109 states and 243 transitions. [2020-09-11 15:49:35,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:49:35,276 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-11 15:49:35,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:49:35,277 INFO L225 Difference]: With dead ends: 109 [2020-09-11 15:49:35,277 INFO L226 Difference]: Without dead ends: 109 [2020-09-11 15:49:35,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:49:35,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-11 15:49:35,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-09-11 15:49:35,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-11 15:49:35,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 243 transitions. [2020-09-11 15:49:35,284 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 243 transitions. Word has length 15 [2020-09-11 15:49:35,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:49:35,284 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 243 transitions. [2020-09-11 15:49:35,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:49:35,285 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 243 transitions. [2020-09-11 15:49:35,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 15:49:35,286 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:49:35,286 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:49:35,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:49:35,287 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:49:35,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:49:35,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1052552835, now seen corresponding path program 1 times [2020-09-11 15:49:35,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:49:35,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862442272] [2020-09-11 15:49:35,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:49:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:49:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:49:35,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862442272] [2020-09-11 15:49:35,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:49:35,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:49:35,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102560945] [2020-09-11 15:49:35,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:49:35,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:49:35,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:49:35,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:49:35,425 INFO L87 Difference]: Start difference. First operand 109 states and 243 transitions. Second operand 5 states. [2020-09-11 15:49:35,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:49:35,473 INFO L93 Difference]: Finished difference Result 174 states and 369 transitions. [2020-09-11 15:49:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:49:35,473 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-11 15:49:35,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:49:35,475 INFO L225 Difference]: With dead ends: 174 [2020-09-11 15:49:35,475 INFO L226 Difference]: Without dead ends: 136 [2020-09-11 15:49:35,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:49:35,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-09-11 15:49:35,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 109. [2020-09-11 15:49:35,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-11 15:49:35,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 239 transitions. [2020-09-11 15:49:35,483 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 239 transitions. Word has length 18 [2020-09-11 15:49:35,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:49:35,483 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 239 transitions. [2020-09-11 15:49:35,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:49:35,483 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 239 transitions. [2020-09-11 15:49:35,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 15:49:35,484 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:49:35,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:49:35,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:49:35,485 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:49:35,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:49:35,486 INFO L82 PathProgramCache]: Analyzing trace with hash 645557555, now seen corresponding path program 2 times [2020-09-11 15:49:35,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:49:35,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121281314] [2020-09-11 15:49:35,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:49:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:49:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:49:35,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121281314] [2020-09-11 15:49:35,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:49:35,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:49:35,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93076532] [2020-09-11 15:49:35,609 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:49:35,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:49:35,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:49:35,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:49:35,611 INFO L87 Difference]: Start difference. First operand 109 states and 239 transitions. Second operand 5 states. [2020-09-11 15:49:35,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:49:35,695 INFO L93 Difference]: Finished difference Result 176 states and 358 transitions. [2020-09-11 15:49:35,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:49:35,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-11 15:49:35,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:49:35,697 INFO L225 Difference]: With dead ends: 176 [2020-09-11 15:49:35,697 INFO L226 Difference]: Without dead ends: 124 [2020-09-11 15:49:35,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-09-11 15:49:35,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-11 15:49:35,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 109. [2020-09-11 15:49:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-11 15:49:35,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 232 transitions. [2020-09-11 15:49:35,703 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 232 transitions. Word has length 18 [2020-09-11 15:49:35,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:49:35,704 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 232 transitions. [2020-09-11 15:49:35,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:49:35,704 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 232 transitions. [2020-09-11 15:49:35,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 15:49:35,705 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:49:35,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:49:35,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:49:35,706 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:49:35,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:49:35,706 INFO L82 PathProgramCache]: Analyzing trace with hash -457536705, now seen corresponding path program 3 times [2020-09-11 15:49:35,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:49:35,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849652495] [2020-09-11 15:49:35,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:49:35,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:49:35,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:49:35,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849652495] [2020-09-11 15:49:35,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:49:35,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:49:35,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068771165] [2020-09-11 15:49:35,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:49:35,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:49:35,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:49:35,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:49:35,785 INFO L87 Difference]: Start difference. First operand 109 states and 232 transitions. Second operand 5 states. [2020-09-11 15:49:35,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:49:35,853 INFO L93 Difference]: Finished difference Result 175 states and 348 transitions. [2020-09-11 15:49:35,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-11 15:49:35,853 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-11 15:49:35,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:49:35,854 INFO L225 Difference]: With dead ends: 175 [2020-09-11 15:49:35,854 INFO L226 Difference]: Without dead ends: 55 [2020-09-11 15:49:35,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-11 15:49:35,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-11 15:49:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-09-11 15:49:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-11 15:49:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 99 transitions. [2020-09-11 15:49:35,857 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 99 transitions. Word has length 18 [2020-09-11 15:49:35,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:49:35,858 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 99 transitions. [2020-09-11 15:49:35,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:49:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 99 transitions. [2020-09-11 15:49:35,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-11 15:49:35,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:49:35,859 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:49:35,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:49:35,859 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:49:35,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:49:35,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1271535879, now seen corresponding path program 4 times [2020-09-11 15:49:35,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:49:35,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371122340] [2020-09-11 15:49:35,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:49:35,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:49:35,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 15:49:35,923 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371122340] [2020-09-11 15:49:35,923 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:49:35,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:49:35,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976893539] [2020-09-11 15:49:35,924 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:49:35,924 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:49:35,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:49:35,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:49:35,925 INFO L87 Difference]: Start difference. First operand 55 states and 99 transitions. Second operand 4 states. [2020-09-11 15:49:35,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:49:35,940 INFO L93 Difference]: Finished difference Result 54 states and 98 transitions. [2020-09-11 15:49:35,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:49:35,940 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-09-11 15:49:35,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:49:35,941 INFO L225 Difference]: With dead ends: 54 [2020-09-11 15:49:35,941 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:49:35,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:49:35,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:49:35,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:49:35,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:49:35,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:49:35,942 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-09-11 15:49:35,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:49:35,943 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:49:35,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:49:35,943 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:49:35,943 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:49:35,943 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:49:35,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:49:35 BasicIcfg [2020-09-11 15:49:35,949 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:49:35,952 INFO L168 Benchmark]: Toolchain (without parser) took 4824.65 ms. Allocated memory was 140.0 MB in the beginning and 246.4 MB in the end (delta: 106.4 MB). Free memory was 100.8 MB in the beginning and 178.0 MB in the end (delta: -77.2 MB). Peak memory consumption was 29.2 MB. Max. memory is 7.1 GB. [2020-09-11 15:49:35,953 INFO L168 Benchmark]: CDTParser took 1.54 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:49:35,954 INFO L168 Benchmark]: CACSL2BoogieTranslator took 749.21 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 160.0 MB in the end (delta: -59.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:49:35,955 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.55 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 157.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-11 15:49:35,956 INFO L168 Benchmark]: Boogie Preprocessor took 33.86 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:49:35,957 INFO L168 Benchmark]: RCFGBuilder took 521.56 ms. Allocated memory is still 202.9 MB. Free memory was 156.1 MB in the beginning and 134.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-09-11 15:49:35,958 INFO L168 Benchmark]: TraceAbstraction took 3446.36 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 133.7 MB in the beginning and 178.0 MB in the end (delta: -44.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:49:35,965 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.54 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 749.21 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 100.1 MB in the beginning and 160.0 MB in the end (delta: -59.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 61.55 ms. Allocated memory is still 202.9 MB. Free memory was 160.0 MB in the beginning and 157.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.86 ms. Allocated memory is still 202.9 MB. Free memory was 157.4 MB in the beginning and 156.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 521.56 ms. Allocated memory is still 202.9 MB. Free memory was 156.1 MB in the beginning and 134.3 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3446.36 ms. Allocated memory was 202.9 MB in the beginning and 246.4 MB in the end (delta: 43.5 MB). Free memory was 133.7 MB in the beginning and 178.0 MB in the end (delta: -44.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 77 ProgramPointsBefore, 32 ProgramPointsAfterwards, 69 TransitionsBefore, 23 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 648 VarBasedMoverChecksPositive, 37 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 36 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2365 CheckedPairsTotal, 53 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: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 162 SDtfs, 105 SDslu, 267 SDs, 0 SdLazy, 91 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 42 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 3814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...