/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/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-17 17:31:29,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-17 17:31:29,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-17 17:31:29,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-17 17:31:29,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-17 17:31:29,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-17 17:31:29,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-17 17:31:29,470 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-17 17:31:29,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-17 17:31:29,472 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-17 17:31:29,473 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-17 17:31:29,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-17 17:31:29,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-17 17:31:29,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-17 17:31:29,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-17 17:31:29,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-17 17:31:29,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-17 17:31:29,486 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-17 17:31:29,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-17 17:31:29,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-17 17:31:29,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-17 17:31:29,499 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-17 17:31:29,500 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-17 17:31:29,502 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-17 17:31:29,504 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-17 17:31:29,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-17 17:31:29,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-17 17:31:29,506 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-17 17:31:29,507 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-17 17:31:29,508 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-17 17:31:29,509 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-17 17:31:29,509 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-17 17:31:29,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-17 17:31:29,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-17 17:31:29,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-17 17:31:29,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-17 17:31:29,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-17 17:31:29,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-17 17:31:29,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-17 17:31:29,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-17 17:31:29,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-17 17:31:29,515 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 [2020-04-17 17:31:29,536 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-17 17:31:29,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-17 17:31:29,538 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-17 17:31:29,539 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-17 17:31:29,539 INFO L138 SettingsManager]: * Use SBE=true [2020-04-17 17:31:29,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-17 17:31:29,539 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-17 17:31:29,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-17 17:31:29,540 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-17 17:31:29,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-17 17:31:29,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-17 17:31:29,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-17 17:31:29,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-17 17:31:29,541 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-17 17:31:29,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-17 17:31:29,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-17 17:31:29,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-17 17:31:29,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-17 17:31:29,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-17 17:31:29,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-17 17:31:29,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-17 17:31:29,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-17 17:31:29,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-17 17:31:29,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-17 17:31:29,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-17 17:31:29,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-04-17 17:31:29,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-17 17:31:29,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-17 17:31:29,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-04-17 17:31:29,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-17 17:31:29,825 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-17 17:31:29,837 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-17 17:31:29,841 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-17 17:31:29,842 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-17 17:31:29,842 INFO L275 PluginConnector]: CDTParser initialized [2020-04-17 17:31:29,843 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-04-17 17:31:29,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99d99df88/1b1d930d27244dfda2ae3574e197d1bd/FLAGf5036f26f [2020-04-17 17:31:30,408 INFO L306 CDTParser]: Found 1 translation units. [2020-04-17 17:31:30,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2020-04-17 17:31:30,429 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99d99df88/1b1d930d27244dfda2ae3574e197d1bd/FLAGf5036f26f [2020-04-17 17:31:30,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99d99df88/1b1d930d27244dfda2ae3574e197d1bd [2020-04-17 17:31:30,777 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-17 17:31:30,798 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-17 17:31:30,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-17 17:31:30,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-17 17:31:30,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-17 17:31:30,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:31:30" (1/1) ... [2020-04-17 17:31:30,807 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10143938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:31:30, skipping insertion in model container [2020-04-17 17:31:30,807 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.04 05:31:30" (1/1) ... [2020-04-17 17:31:30,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-17 17:31:30,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-17 17:31:31,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:31:31,393 INFO L203 MainTranslator]: Completed pre-run [2020-04-17 17:31:31,442 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-17 17:31:31,532 INFO L208 MainTranslator]: Completed translation [2020-04-17 17:31:31,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:31:31 WrapperNode [2020-04-17 17:31:31,532 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-17 17:31:31,533 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-17 17:31:31,533 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-17 17:31:31,533 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-17 17:31:31,542 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:31:31" (1/1) ... [2020-04-17 17:31:31,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:31:31" (1/1) ... [2020-04-17 17:31:31,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-17 17:31:31,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-17 17:31:31,593 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-17 17:31:31,593 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-17 17:31:31,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:31:31" (1/1) ... [2020-04-17 17:31:31,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:31:31" (1/1) ... [2020-04-17 17:31:31,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:31:31" (1/1) ... [2020-04-17 17:31:31,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:31:31" (1/1) ... [2020-04-17 17:31:31,612 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:31:31" (1/1) ... [2020-04-17 17:31:31,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:31:31" (1/1) ... [2020-04-17 17:31:31,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:31:31" (1/1) ... [2020-04-17 17:31:31,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-17 17:31:31,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-17 17:31:31,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-17 17:31:31,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-17 17:31:31,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:31:31" (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 [2020-04-17 17:31:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-17 17:31:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-17 17:31:31,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-17 17:31:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-17 17:31:31,695 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-17 17:31:31,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-17 17:31:31,696 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-17 17:31:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-17 17:31:31,697 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-17 17:31:31,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-17 17:31:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-17 17:31:31,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-17 17:31:31,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-17 17:31:31,700 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-17 17:31:32,090 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-17 17:31:32,090 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-17 17:31:32,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:31:32 BoogieIcfgContainer [2020-04-17 17:31:32,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-17 17:31:32,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-17 17:31:32,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-17 17:31:32,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-17 17:31:32,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.04 05:31:30" (1/3) ... [2020-04-17 17:31:32,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95e23dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:31:32, skipping insertion in model container [2020-04-17 17:31:32,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.04 05:31:31" (2/3) ... [2020-04-17 17:31:32,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@95e23dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.04 05:31:32, skipping insertion in model container [2020-04-17 17:31:32,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.04 05:31:32" (3/3) ... [2020-04-17 17:31:32,103 INFO L109 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2020-04-17 17:31:32,113 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-17 17:31:32,114 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-17 17:31:32,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-17 17:31:32,121 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-17 17:31:32,144 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,144 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,144 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,145 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,145 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,146 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,146 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,146 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,147 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,147 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,147 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,148 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,148 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,148 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,148 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,149 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,149 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,149 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,153 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,154 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,154 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,154 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,160 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,160 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,161 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,161 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,180 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,180 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,180 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,180 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-17 17:31:32,200 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-04-17 17:31:32,221 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-17 17:31:32,222 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-17 17:31:32,222 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-17 17:31:32,222 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-17 17:31:32,222 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-17 17:31:32,223 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-17 17:31:32,224 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-17 17:31:32,224 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-17 17:31:32,242 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-04-17 17:31:32,244 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 17:31:32,288 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 17:31:32,288 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:31:32,294 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 17:31:32,296 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-04-17 17:31:32,316 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-04-17 17:31:32,316 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-04-17 17:31:32,317 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-04-17 17:31:32,319 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-04-17 17:31:32,320 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-04-17 17:31:34,099 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-04-17 17:31:34,177 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2700 [2020-04-17 17:31:34,177 INFO L214 etLargeBlockEncoding]: Total number of compositions: 59 [2020-04-17 17:31:34,182 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-04-17 17:31:34,208 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-04-17 17:31:34,210 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-04-17 17:31:34,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-04-17 17:31:34,218 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:31:34,219 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:31:34,220 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:31:34,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:31:34,227 INFO L82 PathProgramCache]: Analyzing trace with hash -1011733384, now seen corresponding path program 1 times [2020-04-17 17:31:34,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:31:34,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497598906] [2020-04-17 17:31:34,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:31:34,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:31:34,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:31:34,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497598906] [2020-04-17 17:31:34,560 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:31:34,561 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:31:34,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846258082] [2020-04-17 17:31:34,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:31:34,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:31:34,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:31:34,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:31:34,585 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-04-17 17:31:34,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:31:34,650 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-04-17 17:31:34,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:31:34,652 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-04-17 17:31:34,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:31:34,668 INFO L225 Difference]: With dead ends: 282 [2020-04-17 17:31:34,669 INFO L226 Difference]: Without dead ends: 218 [2020-04-17 17:31:34,670 INFO L678 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 [2020-04-17 17:31:34,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-04-17 17:31:34,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-04-17 17:31:34,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-04-17 17:31:34,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-04-17 17:31:34,736 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-04-17 17:31:34,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:31:34,737 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-04-17 17:31:34,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:31:34,737 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-04-17 17:31:34,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-04-17 17:31:34,739 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:31:34,739 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:31:34,739 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:31:34,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:31:34,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1298976658, now seen corresponding path program 1 times [2020-04-17 17:31:34,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:31:34,740 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880348029] [2020-04-17 17:31:34,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:31:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:31:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:31:34,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880348029] [2020-04-17 17:31:34,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:31:34,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:31:34,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012424070] [2020-04-17 17:31:34,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:31:34,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:31:34,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:31:34,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:31:34,833 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 4 states. [2020-04-17 17:31:34,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:31:34,873 INFO L93 Difference]: Finished difference Result 242 states and 634 transitions. [2020-04-17 17:31:34,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:31:34,874 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-04-17 17:31:34,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:31:34,876 INFO L225 Difference]: With dead ends: 242 [2020-04-17 17:31:34,876 INFO L226 Difference]: Without dead ends: 146 [2020-04-17 17:31:34,877 INFO L678 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 [2020-04-17 17:31:34,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-04-17 17:31:34,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-04-17 17:31:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-04-17 17:31:34,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 362 transitions. [2020-04-17 17:31:34,900 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 362 transitions. Word has length 9 [2020-04-17 17:31:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:31:34,901 INFO L479 AbstractCegarLoop]: Abstraction has 146 states and 362 transitions. [2020-04-17 17:31:34,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:31:34,901 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 362 transitions. [2020-04-17 17:31:34,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-04-17 17:31:34,905 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:31:34,906 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:31:34,906 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:31:34,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:31:34,906 INFO L82 PathProgramCache]: Analyzing trace with hash 1379708097, now seen corresponding path program 1 times [2020-04-17 17:31:34,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:31:34,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881289474] [2020-04-17 17:31:34,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:31:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:31:34,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:31:34,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881289474] [2020-04-17 17:31:34,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:31:34,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:31:34,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671718320] [2020-04-17 17:31:34,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:31:34,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:31:34,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:31:34,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:31:34,994 INFO L87 Difference]: Start difference. First operand 146 states and 362 transitions. Second operand 3 states. [2020-04-17 17:31:35,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:31:35,017 INFO L93 Difference]: Finished difference Result 138 states and 336 transitions. [2020-04-17 17:31:35,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:31:35,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-04-17 17:31:35,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:31:35,020 INFO L225 Difference]: With dead ends: 138 [2020-04-17 17:31:35,020 INFO L226 Difference]: Without dead ends: 138 [2020-04-17 17:31:35,021 INFO L678 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 [2020-04-17 17:31:35,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-04-17 17:31:35,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-04-17 17:31:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-04-17 17:31:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 336 transitions. [2020-04-17 17:31:35,036 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 336 transitions. Word has length 11 [2020-04-17 17:31:35,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:31:35,036 INFO L479 AbstractCegarLoop]: Abstraction has 138 states and 336 transitions. [2020-04-17 17:31:35,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:31:35,036 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 336 transitions. [2020-04-17 17:31:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-04-17 17:31:35,041 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:31:35,041 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:31:35,042 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:31:35,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:31:35,044 INFO L82 PathProgramCache]: Analyzing trace with hash -178767453, now seen corresponding path program 1 times [2020-04-17 17:31:35,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:31:35,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071915749] [2020-04-17 17:31:35,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:31:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:31:35,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:31:35,092 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071915749] [2020-04-17 17:31:35,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:31:35,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-04-17 17:31:35,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343481307] [2020-04-17 17:31:35,093 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-04-17 17:31:35,094 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:31:35,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-04-17 17:31:35,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-04-17 17:31:35,094 INFO L87 Difference]: Start difference. First operand 138 states and 336 transitions. Second operand 3 states. [2020-04-17 17:31:35,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:31:35,099 INFO L93 Difference]: Finished difference Result 134 states and 324 transitions. [2020-04-17 17:31:35,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-04-17 17:31:35,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-04-17 17:31:35,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:31:35,101 INFO L225 Difference]: With dead ends: 134 [2020-04-17 17:31:35,101 INFO L226 Difference]: Without dead ends: 134 [2020-04-17 17:31:35,101 INFO L678 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 [2020-04-17 17:31:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-04-17 17:31:35,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-04-17 17:31:35,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-04-17 17:31:35,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 324 transitions. [2020-04-17 17:31:35,109 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 324 transitions. Word has length 12 [2020-04-17 17:31:35,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:31:35,109 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 324 transitions. [2020-04-17 17:31:35,110 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-04-17 17:31:35,110 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 324 transitions. [2020-04-17 17:31:35,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:31:35,111 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:31:35,111 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:31:35,111 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:31:35,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:31:35,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1648184308, now seen corresponding path program 1 times [2020-04-17 17:31:35,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:31:35,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817943307] [2020-04-17 17:31:35,112 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:31:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:31:35,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:31:35,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817943307] [2020-04-17 17:31:35,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:31:35,148 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:31:35,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404466417] [2020-04-17 17:31:35,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:31:35,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:31:35,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:31:35,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:31:35,149 INFO L87 Difference]: Start difference. First operand 134 states and 324 transitions. Second operand 4 states. [2020-04-17 17:31:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:31:35,168 INFO L93 Difference]: Finished difference Result 194 states and 466 transitions. [2020-04-17 17:31:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:31:35,169 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 17:31:35,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:31:35,170 INFO L225 Difference]: With dead ends: 194 [2020-04-17 17:31:35,170 INFO L226 Difference]: Without dead ends: 104 [2020-04-17 17:31:35,170 INFO L678 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 [2020-04-17 17:31:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-04-17 17:31:35,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-04-17 17:31:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-04-17 17:31:35,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 246 transitions. [2020-04-17 17:31:35,177 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 246 transitions. Word has length 13 [2020-04-17 17:31:35,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:31:35,178 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 246 transitions. [2020-04-17 17:31:35,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:31:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 246 transitions. [2020-04-17 17:31:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:31:35,179 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:31:35,179 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:31:35,179 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:31:35,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:31:35,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1261556210, now seen corresponding path program 2 times [2020-04-17 17:31:35,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:31:35,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003091445] [2020-04-17 17:31:35,180 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:31:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:31:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:31:35,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003091445] [2020-04-17 17:31:35,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:31:35,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:31:35,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637528907] [2020-04-17 17:31:35,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:31:35,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:31:35,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:31:35,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:31:35,212 INFO L87 Difference]: Start difference. First operand 104 states and 246 transitions. Second operand 4 states. [2020-04-17 17:31:35,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:31:35,237 INFO L93 Difference]: Finished difference Result 128 states and 298 transitions. [2020-04-17 17:31:35,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:31:35,237 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 17:31:35,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:31:35,238 INFO L225 Difference]: With dead ends: 128 [2020-04-17 17:31:35,238 INFO L226 Difference]: Without dead ends: 68 [2020-04-17 17:31:35,238 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:31:35,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-04-17 17:31:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-04-17 17:31:35,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-04-17 17:31:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 144 transitions. [2020-04-17 17:31:35,243 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 144 transitions. Word has length 13 [2020-04-17 17:31:35,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:31:35,244 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 144 transitions. [2020-04-17 17:31:35,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:31:35,244 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 144 transitions. [2020-04-17 17:31:35,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-04-17 17:31:35,245 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:31:35,245 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:31:35,245 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:31:35,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:31:35,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1246852910, now seen corresponding path program 3 times [2020-04-17 17:31:35,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:31:35,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259205329] [2020-04-17 17:31:35,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:31:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:31:35,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:31:35,336 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259205329] [2020-04-17 17:31:35,336 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:31:35,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-04-17 17:31:35,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067611170] [2020-04-17 17:31:35,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:31:35,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:31:35,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:31:35,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:31:35,338 INFO L87 Difference]: Start difference. First operand 68 states and 144 transitions. Second operand 4 states. [2020-04-17 17:31:35,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:31:35,379 INFO L93 Difference]: Finished difference Result 81 states and 157 transitions. [2020-04-17 17:31:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-04-17 17:31:35,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-04-17 17:31:35,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:31:35,380 INFO L225 Difference]: With dead ends: 81 [2020-04-17 17:31:35,380 INFO L226 Difference]: Without dead ends: 59 [2020-04-17 17:31:35,380 INFO L678 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 [2020-04-17 17:31:35,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-04-17 17:31:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-04-17 17:31:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-04-17 17:31:35,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 114 transitions. [2020-04-17 17:31:35,385 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 114 transitions. Word has length 13 [2020-04-17 17:31:35,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:31:35,385 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 114 transitions. [2020-04-17 17:31:35,385 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:31:35,385 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 114 transitions. [2020-04-17 17:31:35,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-04-17 17:31:35,386 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:31:35,386 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:31:35,386 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:31:35,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:31:35,387 INFO L82 PathProgramCache]: Analyzing trace with hash 433937672, now seen corresponding path program 1 times [2020-04-17 17:31:35,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:31:35,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994133078] [2020-04-17 17:31:35,387 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:31:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:31:35,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:31:35,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994133078] [2020-04-17 17:31:35,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:31:35,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:31:35,436 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51526149] [2020-04-17 17:31:35,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-04-17 17:31:35,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:31:35,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-04-17 17:31:35,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-04-17 17:31:35,437 INFO L87 Difference]: Start difference. First operand 59 states and 114 transitions. Second operand 5 states. [2020-04-17 17:31:35,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:31:35,481 INFO L93 Difference]: Finished difference Result 60 states and 104 transitions. [2020-04-17 17:31:35,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-04-17 17:31:35,481 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-04-17 17:31:35,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:31:35,482 INFO L225 Difference]: With dead ends: 60 [2020-04-17 17:31:35,482 INFO L226 Difference]: Without dead ends: 45 [2020-04-17 17:31:35,482 INFO L678 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 [2020-04-17 17:31:35,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-04-17 17:31:35,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-04-17 17:31:35,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-04-17 17:31:35,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 74 transitions. [2020-04-17 17:31:35,485 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 74 transitions. Word has length 14 [2020-04-17 17:31:35,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:31:35,485 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 74 transitions. [2020-04-17 17:31:35,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-04-17 17:31:35,486 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 74 transitions. [2020-04-17 17:31:35,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-04-17 17:31:35,486 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:31:35,486 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:31:35,486 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:31:35,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:31:35,487 INFO L82 PathProgramCache]: Analyzing trace with hash 567169455, now seen corresponding path program 1 times [2020-04-17 17:31:35,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:31:35,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891348757] [2020-04-17 17:31:35,487 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:31:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:31:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:31:35,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891348757] [2020-04-17 17:31:35,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:31:35,559 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-04-17 17:31:35,561 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458697389] [2020-04-17 17:31:35,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-04-17 17:31:35,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:31:35,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-17 17:31:35,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-04-17 17:31:35,562 INFO L87 Difference]: Start difference. First operand 45 states and 74 transitions. Second operand 6 states. [2020-04-17 17:31:35,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:31:35,614 INFO L93 Difference]: Finished difference Result 42 states and 66 transitions. [2020-04-17 17:31:35,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-04-17 17:31:35,614 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-04-17 17:31:35,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:31:35,615 INFO L225 Difference]: With dead ends: 42 [2020-04-17 17:31:35,615 INFO L226 Difference]: Without dead ends: 36 [2020-04-17 17:31:35,615 INFO L678 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 [2020-04-17 17:31:35,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-04-17 17:31:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-04-17 17:31:35,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-04-17 17:31:35,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 56 transitions. [2020-04-17 17:31:35,621 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 56 transitions. Word has length 15 [2020-04-17 17:31:35,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:31:35,621 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-04-17 17:31:35,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-04-17 17:31:35,622 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 56 transitions. [2020-04-17 17:31:35,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-04-17 17:31:35,622 INFO L417 BasicCegarLoop]: Found error trace [2020-04-17 17:31:35,622 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-17 17:31:35,622 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-17 17:31:35,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-17 17:31:35,623 INFO L82 PathProgramCache]: Analyzing trace with hash -412776350, now seen corresponding path program 1 times [2020-04-17 17:31:35,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-17 17:31:35,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938143695] [2020-04-17 17:31:35,623 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-17 17:31:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-17 17:31:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-17 17:31:35,704 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938143695] [2020-04-17 17:31:35,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-17 17:31:35,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-04-17 17:31:35,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901351390] [2020-04-17 17:31:35,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-04-17 17:31:35,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-04-17 17:31:35,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-04-17 17:31:35,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-04-17 17:31:35,706 INFO L87 Difference]: Start difference. First operand 36 states and 56 transitions. Second operand 4 states. [2020-04-17 17:31:35,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-17 17:31:35,717 INFO L93 Difference]: Finished difference Result 35 states and 55 transitions. [2020-04-17 17:31:35,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-04-17 17:31:35,717 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-04-17 17:31:35,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-17 17:31:35,718 INFO L225 Difference]: With dead ends: 35 [2020-04-17 17:31:35,718 INFO L226 Difference]: Without dead ends: 0 [2020-04-17 17:31:35,719 INFO L678 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 [2020-04-17 17:31:35,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-17 17:31:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-17 17:31:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-17 17:31:35,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-17 17:31:35,720 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-04-17 17:31:35,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-17 17:31:35,720 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-17 17:31:35,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-04-17 17:31:35,720 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-17 17:31:35,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-17 17:31:35,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.04 05:31:35 BasicIcfg [2020-04-17 17:31:35,725 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-17 17:31:35,729 INFO L168 Benchmark]: Toolchain (without parser) took 4948.85 ms. Allocated memory was 136.3 MB in the beginning and 252.7 MB in the end (delta: 116.4 MB). Free memory was 97.9 MB in the beginning and 168.2 MB in the end (delta: -70.3 MB). Peak memory consumption was 46.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:31:35,730 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-04-17 17:31:35,736 INFO L168 Benchmark]: CACSL2BoogieTranslator took 733.54 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 96.0 MB in the beginning and 156.0 MB in the end (delta: -60.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-04-17 17:31:35,737 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.48 ms. Allocated memory is still 200.3 MB. Free memory was 156.0 MB in the beginning and 153.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-17 17:31:35,738 INFO L168 Benchmark]: Boogie Preprocessor took 26.61 ms. Allocated memory is still 200.3 MB. Free memory was 153.3 MB in the beginning and 151.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-04-17 17:31:35,739 INFO L168 Benchmark]: RCFGBuilder took 475.16 ms. Allocated memory is still 200.3 MB. Free memory was 151.9 MB in the beginning and 129.6 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. [2020-04-17 17:31:35,745 INFO L168 Benchmark]: TraceAbstraction took 3629.28 ms. Allocated memory was 200.3 MB in the beginning and 252.7 MB in the end (delta: 52.4 MB). Free memory was 129.6 MB in the beginning and 168.2 MB in the end (delta: -38.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-04-17 17:31:35,752 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 136.3 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 733.54 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 96.0 MB in the beginning and 156.0 MB in the end (delta: -60.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 59.48 ms. Allocated memory is still 200.3 MB. Free memory was 156.0 MB in the beginning and 153.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.61 ms. Allocated memory is still 200.3 MB. Free memory was 153.3 MB in the beginning and 151.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 475.16 ms. Allocated memory is still 200.3 MB. Free memory was 151.9 MB in the beginning and 129.6 MB in the end (delta: 22.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3629.28 ms. Allocated memory was 200.3 MB in the beginning and 252.7 MB in the end (delta: 52.4 MB). Free memory was 129.6 MB in the beginning and 168.2 MB in the end (delta: -38.5 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.9s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 7 FixpointIterations, 14 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 669 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 12 SemBasedMoverChecksPositive, 35 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.3s, 0 MoverChecksTotal, 2700 CheckedPairsTotal, 59 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.9s, HoareTripleCheckerStatistics: 180 SDtfs, 139 SDslu, 191 SDs, 0 SdLazy, 122 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 27 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, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 3881 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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...