/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-11 11:27:26,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-11 11:27:26,322 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-11 11:27:26,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-03-11 11:27:26,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-03-11 11:27:26,347 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-03-11 11:27:26,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-03-11 11:27:26,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-03-11 11:27:26,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-03-11 11:27:26,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-03-11 11:27:26,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-03-11 11:27:26,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-03-11 11:27:26,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-11 11:27:26,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-11 11:27:26,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-11 11:27:26,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-11 11:27:26,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-11 11:27:26,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-11 11:27:26,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-11 11:27:26,361 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-11 11:27:26,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-11 11:27:26,363 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-11 11:27:26,364 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-11 11:27:26,365 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-11 11:27:26,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-11 11:27:26,371 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-03-11 11:27:26,371 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-03-11 11:27:26,372 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-03-11 11:27:26,373 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-03-11 11:27:26,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-03-11 11:27:26,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-03-11 11:27:26,374 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-03-11 11:27:26,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-03-11 11:27:26,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-11 11:27:26,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-11 11:27:26,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-11 11:27:26,380 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-SemanticLbe.epf [2021-03-11 11:27:26,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-11 11:27:26,403 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-11 11:27:26,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-11 11:27:26,404 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-11 11:27:26,404 INFO L138 SettingsManager]: * Use SBE=true [2021-03-11 11:27:26,404 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-11 11:27:26,404 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-11 11:27:26,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-11 11:27:26,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-11 11:27:26,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-11 11:27:26,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-11 11:27:26,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-11 11:27:26,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-11 11:27:26,405 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-11 11:27:26,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-11 11:27:26,406 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-11 11:27:26,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-11 11:27:26,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-11 11:27:26,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-11 11:27:26,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-11 11:27:26,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-11 11:27:26,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-11 11:27:26,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-11 11:27:26,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-11 11:27:26,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-11 11:27:26,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-11 11:27:26,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-11 11:27:26,407 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-11 11:27:26,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-11 11:27:26,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-11 11:27:26,690 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-11 11:27:26,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-11 11:27:26,693 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-11 11:27:26,694 INFO L275 PluginConnector]: CDTParser initialized [2021-03-11 11:27:26,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2021-03-11 11:27:26,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf226ecd8/49567e51484b49a59537ea045dc2d852/FLAGdbbca2868 [2021-03-11 11:27:27,507 INFO L306 CDTParser]: Found 1 translation units. [2021-03-11 11:27:27,515 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i [2021-03-11 11:27:27,529 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf226ecd8/49567e51484b49a59537ea045dc2d852/FLAGdbbca2868 [2021-03-11 11:27:27,741 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf226ecd8/49567e51484b49a59537ea045dc2d852 [2021-03-11 11:27:27,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-11 11:27:27,748 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-11 11:27:27,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-11 11:27:27,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-11 11:27:27,752 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-11 11:27:27,753 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:27:27" (1/1) ... [2021-03-11 11:27:27,755 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bf2a7da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:27, skipping insertion in model container [2021-03-11 11:27:27,755 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.03 11:27:27" (1/1) ... [2021-03-11 11:27:27,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-11 11:27:27,807 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-11 11:27:27,917 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i[950,963] [2021-03-11 11:27:28,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:27:28,105 INFO L203 MainTranslator]: Completed pre-run [2021-03-11 11:27:28,116 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe031_tso.oepc.i[950,963] [2021-03-11 11:27:28,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-11 11:27:28,235 INFO L208 MainTranslator]: Completed translation [2021-03-11 11:27:28,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:28 WrapperNode [2021-03-11 11:27:28,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-11 11:27:28,237 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-11 11:27:28,237 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-11 11:27:28,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-11 11:27:28,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:28" (1/1) ... [2021-03-11 11:27:28,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:28" (1/1) ... [2021-03-11 11:27:28,290 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-11 11:27:28,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-11 11:27:28,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-11 11:27:28,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-11 11:27:28,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:28" (1/1) ... [2021-03-11 11:27:28,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:28" (1/1) ... [2021-03-11 11:27:28,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:28" (1/1) ... [2021-03-11 11:27:28,309 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:28" (1/1) ... [2021-03-11 11:27:28,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:28" (1/1) ... [2021-03-11 11:27:28,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:28" (1/1) ... [2021-03-11 11:27:28,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:28" (1/1) ... [2021-03-11 11:27:28,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-11 11:27:28,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-11 11:27:28,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-11 11:27:28,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-11 11:27:28,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:28" (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 [2021-03-11 11:27:28,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-11 11:27:28,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-11 11:27:28,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-11 11:27:28,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-11 11:27:28,404 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-11 11:27:28,404 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-11 11:27:28,405 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-11 11:27:28,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-11 11:27:28,405 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-11 11:27:28,405 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-11 11:27:28,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-11 11:27:28,406 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-11 11:27:28,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-11 11:27:28,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-11 11:27:28,407 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-11 11:27:28,712 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-11 11:27:28,713 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-11 11:27:28,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:27:28 BoogieIcfgContainer [2021-03-11 11:27:28,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-11 11:27:28,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-11 11:27:28,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-11 11:27:28,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-11 11:27:28,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.03 11:27:27" (1/3) ... [2021-03-11 11:27:28,718 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691476ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:27:28, skipping insertion in model container [2021-03-11 11:27:28,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.03 11:27:28" (2/3) ... [2021-03-11 11:27:28,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@691476ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.03 11:27:28, skipping insertion in model container [2021-03-11 11:27:28,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.03 11:27:28" (3/3) ... [2021-03-11 11:27:28,720 INFO L111 eAbstractionObserver]: Analyzing ICFG safe031_tso.oepc.i [2021-03-11 11:27:28,726 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-11 11:27:28,727 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-11 11:27:28,730 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-11 11:27:28,730 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-11 11:27:28,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,751 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,751 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,751 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,752 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,752 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,752 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,752 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,752 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,752 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,753 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,753 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,753 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,753 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,753 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,753 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,753 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,754 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,754 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,754 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,755 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,755 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,755 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,755 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,755 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,755 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,756 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,756 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,756 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,758 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,758 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,758 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,761 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,761 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,761 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,762 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,763 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,763 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,763 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-11 11:27:28,764 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-11 11:27:28,778 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-11 11:27:28,790 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-11 11:27:28,790 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-11 11:27:28,791 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-11 11:27:28,791 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-11 11:27:28,791 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-11 11:27:28,791 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-11 11:27:28,791 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-11 11:27:28,791 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-11 11:27:28,800 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-03-11 11:27:28,809 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 74 transitions, 163 flow [2021-03-11 11:27:28,811 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 74 transitions, 163 flow [2021-03-11 11:27:28,812 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 82 places, 74 transitions, 163 flow [2021-03-11 11:27:28,845 INFO L129 PetriNetUnfolder]: 2/71 cut-off events. [2021-03-11 11:27:28,845 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-03-11 11:27:28,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81 conditions, 71 events. 2/71 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. 0/68 useless extension candidates. Maximal degree in co-relation 56. Up to 2 conditions per place. [2021-03-11 11:27:28,850 INFO L116 LiptonReduction]: Number of co-enabled transitions 1296 [2021-03-11 11:27:30,952 WARN L205 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 11:27:31,171 WARN L205 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2021-03-11 11:27:31,254 INFO L131 LiptonReduction]: Checked pairs total: 2527 [2021-03-11 11:27:31,254 INFO L133 LiptonReduction]: Total number of compositions: 60 [2021-03-11 11:27:31,260 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2021-03-11 11:27:31,282 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:31,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-03-11 11:27:31,289 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:31,290 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:31,290 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:31,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:31,294 INFO L82 PathProgramCache]: Analyzing trace with hash 41382087, now seen corresponding path program 1 times [2021-03-11 11:27:31,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:31,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845117544] [2021-03-11 11:27:31,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:31,412 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:31,412 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:31,413 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:31,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:31,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:31,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845117544] [2021-03-11 11:27:31,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:31,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:27:31,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351610450] [2021-03-11 11:27:31,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-03-11 11:27:31,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:31,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-03-11 11:27:31,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:27:31,430 INFO L87 Difference]: Start difference. First operand has 362 states, 360 states have (on average 3.1555555555555554) internal successors, (1136), 361 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:31,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:31,450 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2021-03-11 11:27:31,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-03-11 11:27:31,451 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-03-11 11:27:31,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:31,461 INFO L225 Difference]: With dead ends: 362 [2021-03-11 11:27:31,461 INFO L226 Difference]: Without dead ends: 298 [2021-03-11 11:27:31,462 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-03-11 11:27:31,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-03-11 11:27:31,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-03-11 11:27:31,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.909090909090909) internal successors, (864), 297 states have internal predecessors, (864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2021-03-11 11:27:31,512 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2021-03-11 11:27:31,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:31,513 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2021-03-11 11:27:31,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2021-03-11 11:27:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-03-11 11:27:31,514 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:31,514 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:31,514 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-11 11:27:31,515 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:31,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:31,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1282819505, now seen corresponding path program 1 times [2021-03-11 11:27:31,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:31,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500785730] [2021-03-11 11:27:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:31,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:31,624 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:27:31,625 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:27:31,640 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 11:27:31,641 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 11:27:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:31,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500785730] [2021-03-11 11:27:31,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:31,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-03-11 11:27:31,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827561630] [2021-03-11 11:27:31,661 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:31,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:31,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:31,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:31,662 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:31,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:31,724 INFO L93 Difference]: Finished difference Result 556 states and 1507 transitions. [2021-03-11 11:27:31,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:31,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-03-11 11:27:31,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:31,727 INFO L225 Difference]: With dead ends: 556 [2021-03-11 11:27:31,727 INFO L226 Difference]: Without dead ends: 414 [2021-03-11 11:27:31,728 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 39.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:31,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2021-03-11 11:27:31,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 338. [2021-03-11 11:27:31,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 2.741839762611276) internal successors, (924), 337 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:31,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 924 transitions. [2021-03-11 11:27:31,753 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 924 transitions. Word has length 9 [2021-03-11 11:27:31,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:31,753 INFO L480 AbstractCegarLoop]: Abstraction has 338 states and 924 transitions. [2021-03-11 11:27:31,753 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:31,753 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 924 transitions. [2021-03-11 11:27:31,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:27:31,754 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:31,754 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:31,754 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-11 11:27:31,755 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:31,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:31,755 INFO L82 PathProgramCache]: Analyzing trace with hash -618939681, now seen corresponding path program 1 times [2021-03-11 11:27:31,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:31,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727115146] [2021-03-11 11:27:31,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:31,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:31,827 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:31,827 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:31,833 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:27:31,834 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:27:31,845 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 11:27:31,847 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 11:27:31,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:31,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727115146] [2021-03-11 11:27:31,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:31,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:27:31,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556005165] [2021-03-11 11:27:31,868 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:27:31,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:31,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:27:31,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:31,870 INFO L87 Difference]: Start difference. First operand 338 states and 924 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:31,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:31,921 INFO L93 Difference]: Finished difference Result 464 states and 1199 transitions. [2021-03-11 11:27:31,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 11:27:31,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-03-11 11:27:31,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:31,924 INFO L225 Difference]: With dead ends: 464 [2021-03-11 11:27:31,924 INFO L226 Difference]: Without dead ends: 390 [2021-03-11 11:27:31,925 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 47.9ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:27:31,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-03-11 11:27:31,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 326. [2021-03-11 11:27:31,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.707692307692308) internal successors, (880), 325 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:31,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 880 transitions. [2021-03-11 11:27:31,951 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 880 transitions. Word has length 10 [2021-03-11 11:27:31,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:31,951 INFO L480 AbstractCegarLoop]: Abstraction has 326 states and 880 transitions. [2021-03-11 11:27:31,951 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:31,951 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 880 transitions. [2021-03-11 11:27:31,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-03-11 11:27:31,953 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:31,953 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:31,953 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-11 11:27:31,953 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:31,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:31,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1112363396, now seen corresponding path program 1 times [2021-03-11 11:27:31,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:31,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714333659] [2021-03-11 11:27:31,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:31,995 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:31,996 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:31,999 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:27:31,999 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:27:32,011 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 11:27:32,013 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 11:27:32,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:32,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714333659] [2021-03-11 11:27:32,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:32,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:27:32,028 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795406564] [2021-03-11 11:27:32,028 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:27:32,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:32,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:27:32,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:32,029 INFO L87 Difference]: Start difference. First operand 326 states and 880 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:32,089 INFO L93 Difference]: Finished difference Result 440 states and 1121 transitions. [2021-03-11 11:27:32,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 11:27:32,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-03-11 11:27:32,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:32,092 INFO L225 Difference]: With dead ends: 440 [2021-03-11 11:27:32,092 INFO L226 Difference]: Without dead ends: 362 [2021-03-11 11:27:32,092 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.2ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:27:32,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-03-11 11:27:32,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 298. [2021-03-11 11:27:32,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 297 states have (on average 2.6734006734006734) internal successors, (794), 297 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 794 transitions. [2021-03-11 11:27:32,101 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 794 transitions. Word has length 10 [2021-03-11 11:27:32,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:32,101 INFO L480 AbstractCegarLoop]: Abstraction has 298 states and 794 transitions. [2021-03-11 11:27:32,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,102 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 794 transitions. [2021-03-11 11:27:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-03-11 11:27:32,103 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:32,103 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:32,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-11 11:27:32,103 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:32,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:32,104 INFO L82 PathProgramCache]: Analyzing trace with hash -2007596522, now seen corresponding path program 1 times [2021-03-11 11:27:32,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:32,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598663888] [2021-03-11 11:27:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:32,139 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,139 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:32,142 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,143 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 11:27:32,148 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,149 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:32,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598663888] [2021-03-11 11:27:32,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:32,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-03-11 11:27:32,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824163116] [2021-03-11 11:27:32,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-03-11 11:27:32,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:32,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-03-11 11:27:32,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-03-11 11:27:32,151 INFO L87 Difference]: Start difference. First operand 298 states and 794 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:32,176 INFO L93 Difference]: Finished difference Result 317 states and 754 transitions. [2021-03-11 11:27:32,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:32,176 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-03-11 11:27:32,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:32,178 INFO L225 Difference]: With dead ends: 317 [2021-03-11 11:27:32,178 INFO L226 Difference]: Without dead ends: 237 [2021-03-11 11:27:32,178 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.3ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:32,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2021-03-11 11:27:32,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2021-03-11 11:27:32,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 2.3516949152542375) internal successors, (555), 236 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 555 transitions. [2021-03-11 11:27:32,184 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 555 transitions. Word has length 11 [2021-03-11 11:27:32,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:32,184 INFO L480 AbstractCegarLoop]: Abstraction has 237 states and 555 transitions. [2021-03-11 11:27:32,184 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 555 transitions. [2021-03-11 11:27:32,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-03-11 11:27:32,185 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:32,185 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:32,185 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-11 11:27:32,185 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:32,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:32,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1248545297, now seen corresponding path program 1 times [2021-03-11 11:27:32,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:32,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186109112] [2021-03-11 11:27:32,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:32,215 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,215 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:32,218 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,218 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:32,222 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,223 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 11:27:32,230 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,231 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:32,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186109112] [2021-03-11 11:27:32,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:32,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:27:32,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132645511] [2021-03-11 11:27:32,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:27:32,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:32,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:27:32,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:32,234 INFO L87 Difference]: Start difference. First operand 237 states and 555 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:32,266 INFO L93 Difference]: Finished difference Result 211 states and 450 transitions. [2021-03-11 11:27:32,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:27:32,267 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-03-11 11:27:32,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:32,268 INFO L225 Difference]: With dead ends: 211 [2021-03-11 11:27:32,268 INFO L226 Difference]: Without dead ends: 160 [2021-03-11 11:27:32,268 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 17.1ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:27:32,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-03-11 11:27:32,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 148. [2021-03-11 11:27:32,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 147 states have (on average 2.061224489795918) internal successors, (303), 147 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 303 transitions. [2021-03-11 11:27:32,272 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 303 transitions. Word has length 13 [2021-03-11 11:27:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:32,272 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 303 transitions. [2021-03-11 11:27:32,272 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,272 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 303 transitions. [2021-03-11 11:27:32,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-11 11:27:32,273 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:32,273 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:32,273 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-11 11:27:32,273 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:32,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:32,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1127421281, now seen corresponding path program 1 times [2021-03-11 11:27:32,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:32,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382102044] [2021-03-11 11:27:32,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:32,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:32,328 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:32,329 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,329 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:32,332 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:27:32,335 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:27:32,348 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 11:27:32,349 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 11:27:32,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:32,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382102044] [2021-03-11 11:27:32,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:32,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:27:32,371 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037090799] [2021-03-11 11:27:32,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:27:32,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:32,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:27:32,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:32,379 INFO L87 Difference]: Start difference. First operand 148 states and 303 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:32,434 INFO L93 Difference]: Finished difference Result 184 states and 367 transitions. [2021-03-11 11:27:32,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-03-11 11:27:32,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-11 11:27:32,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:32,436 INFO L225 Difference]: With dead ends: 184 [2021-03-11 11:27:32,436 INFO L226 Difference]: Without dead ends: 140 [2021-03-11 11:27:32,436 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 52.7ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-03-11 11:27:32,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-03-11 11:27:32,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 111. [2021-03-11 11:27:32,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.9272727272727272) internal successors, (212), 110 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 212 transitions. [2021-03-11 11:27:32,440 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 212 transitions. Word has length 15 [2021-03-11 11:27:32,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:32,440 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 212 transitions. [2021-03-11 11:27:32,440 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,440 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 212 transitions. [2021-03-11 11:27:32,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-11 11:27:32,441 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:32,441 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:32,441 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-11 11:27:32,441 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:32,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:32,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1081057911, now seen corresponding path program 1 times [2021-03-11 11:27:32,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:32,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265337189] [2021-03-11 11:27:32,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:32,496 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:32,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,498 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:32,502 INFO L142 QuantifierPusher]: treesize reduction 3, result has 81.3 percent of original size [2021-03-11 11:27:32,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-03-11 11:27:32,533 INFO L142 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-03-11 11:27:32,534 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-03-11 11:27:32,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:32,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265337189] [2021-03-11 11:27:32,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:32,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-03-11 11:27:32,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963573666] [2021-03-11 11:27:32,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-03-11 11:27:32,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:32,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-03-11 11:27:32,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-03-11 11:27:32,551 INFO L87 Difference]: Start difference. First operand 111 states and 212 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:32,577 INFO L93 Difference]: Finished difference Result 152 states and 279 transitions. [2021-03-11 11:27:32,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-03-11 11:27:32,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-11 11:27:32,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:32,578 INFO L225 Difference]: With dead ends: 152 [2021-03-11 11:27:32,578 INFO L226 Difference]: Without dead ends: 135 [2021-03-11 11:27:32,578 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 29.1ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:27:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2021-03-11 11:27:32,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 110. [2021-03-11 11:27:32,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.9174311926605505) internal successors, (209), 109 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 209 transitions. [2021-03-11 11:27:32,581 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 209 transitions. Word has length 15 [2021-03-11 11:27:32,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:32,581 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 209 transitions. [2021-03-11 11:27:32,581 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,581 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 209 transitions. [2021-03-11 11:27:32,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-03-11 11:27:32,582 INFO L511 BasicCegarLoop]: Found error trace [2021-03-11 11:27:32,582 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-03-11 11:27:32,582 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-11 11:27:32,582 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-11 11:27:32,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-11 11:27:32,582 INFO L82 PathProgramCache]: Analyzing trace with hash -980995701, now seen corresponding path program 2 times [2021-03-11 11:27:32,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-11 11:27:32,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953382423] [2021-03-11 11:27:32,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-11 11:27:32,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-11 11:27:32,604 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,604 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:32,607 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,607 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:32,610 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,610 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-03-11 11:27:32,614 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,615 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-03-11 11:27:32,622 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-03-11 11:27:32,623 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-03-11 11:27:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-11 11:27:32,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953382423] [2021-03-11 11:27:32,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-11 11:27:32,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-03-11 11:27:32,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819146933] [2021-03-11 11:27:32,624 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-11 11:27:32,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-11 11:27:32,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-11 11:27:32,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-03-11 11:27:32,625 INFO L87 Difference]: Start difference. First operand 110 states and 209 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-11 11:27:32,646 INFO L93 Difference]: Finished difference Result 94 states and 183 transitions. [2021-03-11 11:27:32,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-03-11 11:27:32,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-03-11 11:27:32,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-11 11:27:32,647 INFO L225 Difference]: With dead ends: 94 [2021-03-11 11:27:32,647 INFO L226 Difference]: Without dead ends: 0 [2021-03-11 11:27:32,647 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 21.3ms TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-03-11 11:27:32,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-11 11:27:32,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-11 11:27:32,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-11 11:27:32,648 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-03-11 11:27:32,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-11 11:27:32,648 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-11 11:27:32,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-03-11 11:27:32,648 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-11 11:27:32,648 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-11 11:27:32,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-11 11:27:32,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.03 11:27:32 BasicIcfg [2021-03-11 11:27:32,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-11 11:27:32,652 INFO L168 Benchmark]: Toolchain (without parser) took 4906.43 ms. Allocated memory was 255.9 MB in the beginning and 408.9 MB in the end (delta: 153.1 MB). Free memory was 235.3 MB in the beginning and 362.7 MB in the end (delta: -127.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:32,652 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 238.0 MB in the beginning and 237.8 MB in the end (delta: 218.2 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:27:32,652 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.27 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 234.6 MB in the beginning and 302.8 MB in the end (delta: -68.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:32,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.62 ms. Allocated memory is still 339.7 MB. Free memory was 302.8 MB in the beginning and 300.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:32,653 INFO L168 Benchmark]: Boogie Preprocessor took 30.20 ms. Allocated memory is still 339.7 MB. Free memory was 300.9 MB in the beginning and 299.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-11 11:27:32,653 INFO L168 Benchmark]: RCFGBuilder took 392.00 ms. Allocated memory is still 339.7 MB. Free memory was 299.7 MB in the beginning and 316.3 MB in the end (delta: -16.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:32,654 INFO L168 Benchmark]: TraceAbstraction took 3935.55 ms. Allocated memory was 339.7 MB in the beginning and 408.9 MB in the end (delta: 69.2 MB). Free memory was 315.5 MB in the beginning and 362.7 MB in the end (delta: -47.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.0 GB. [2021-03-11 11:27:32,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 255.9 MB. Free memory was 238.0 MB in the beginning and 237.8 MB in the end (delta: 218.2 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 486.27 ms. Allocated memory was 255.9 MB in the beginning and 339.7 MB in the end (delta: 83.9 MB). Free memory was 234.6 MB in the beginning and 302.8 MB in the end (delta: -68.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 53.62 ms. Allocated memory is still 339.7 MB. Free memory was 302.8 MB in the beginning and 300.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 30.20 ms. Allocated memory is still 339.7 MB. Free memory was 300.9 MB in the beginning and 299.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 392.00 ms. Allocated memory is still 339.7 MB. Free memory was 299.7 MB in the beginning and 316.3 MB in the end (delta: -16.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.0 GB. * TraceAbstraction took 3935.55 ms. Allocated memory was 339.7 MB in the beginning and 408.9 MB in the end (delta: 69.2 MB). Free memory was 315.5 MB in the beginning and 362.7 MB in the end (delta: -47.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2443.5ms, 82 PlacesBefore, 32 PlacesAfterwards, 74 TransitionsBefore, 23 TransitionsAfterwards, 1296 CoEnabledTransitionPairs, 6 FixpointIterations, 17 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 2527 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1128, positive: 1038, positive conditional: 0, positive unconditional: 1038, negative: 90, negative conditional: 0, negative unconditional: 90, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 744, positive: 716, positive conditional: 0, positive unconditional: 716, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 744, positive: 716, positive conditional: 0, positive unconditional: 716, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 28, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 28, negative conditional: 0, negative unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 94, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 94, negative conditional: 0, negative unconditional: 94, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1128, positive: 322, positive conditional: 0, positive unconditional: 322, negative: 62, negative conditional: 0, negative unconditional: 62, unknown: 744, unknown conditional: 0, unknown unconditional: 744] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 37, Positive conditional cache size: 0, Positive unconditional cache size: 37, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3859.6ms, OverallIterations: 9, TraceHistogramMax: 1, EmptinessCheckTime: 13.5ms, AutomataDifference: 409.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 2491.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 230 SDtfs, 216 SDslu, 363 SDs, 0 SdLazy, 148 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 125.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 270.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, InterpolantAutomatonStates: 50, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 116.6ms AutomataMinimizationTime, 9 MinimizatonAttempts, 270 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 17.6ms SsaConstructionTime, 125.0ms SatisfiabilityAnalysisTime, 551.5ms InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 522 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...