/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-McrStrategy.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b981219 [2020-04-18 19:51:41,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-04-18 19:51:41,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-04-18 19:51:41,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-04-18 19:51:41,628 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-04-18 19:51:41,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-04-18 19:51:41,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-04-18 19:51:41,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-04-18 19:51:41,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-04-18 19:51:41,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-04-18 19:51:41,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-04-18 19:51:41,640 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-04-18 19:51:41,640 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-04-18 19:51:41,641 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-04-18 19:51:41,643 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-04-18 19:51:41,644 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-04-18 19:51:41,646 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-04-18 19:51:41,646 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-04-18 19:51:41,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-04-18 19:51:41,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-04-18 19:51:41,657 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-04-18 19:51:41,658 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-04-18 19:51:41,660 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-04-18 19:51:41,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-04-18 19:51:41,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-04-18 19:51:41,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-04-18 19:51:41,663 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-04-18 19:51:41,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-04-18 19:51:41,667 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-04-18 19:51:41,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-04-18 19:51:41,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-04-18 19:51:41,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-04-18 19:51:41,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-04-18 19:51:41,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-04-18 19:51:41,678 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-04-18 19:51:41,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-04-18 19:51:41,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-04-18 19:51:41,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-04-18 19:51:41,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-04-18 19:51:41,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-04-18 19:51:41,683 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-04-18 19:51:41,684 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-NoLbe-McrStrategy.epf [2020-04-18 19:51:41,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-04-18 19:51:41,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-04-18 19:51:41,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-04-18 19:51:41,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-04-18 19:51:41,713 INFO L138 SettingsManager]: * Use SBE=true [2020-04-18 19:51:41,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-04-18 19:51:41,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-04-18 19:51:41,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-04-18 19:51:41,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-04-18 19:51:41,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-04-18 19:51:41,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-04-18 19:51:41,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-04-18 19:51:41,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-04-18 19:51:41,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-04-18 19:51:41,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-04-18 19:51:41,716 INFO L138 SettingsManager]: * Use constant arrays=true [2020-04-18 19:51:41,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-04-18 19:51:41,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-04-18 19:51:41,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-04-18 19:51:41,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-04-18 19:51:41,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-04-18 19:51:41,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:51:41,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-04-18 19:51:41,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-04-18 19:51:41,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-04-18 19:51:41,718 INFO L138 SettingsManager]: * Trace refinement strategy=MCR [2020-04-18 19:51:41,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-04-18 19:51:41,718 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-04-18 19:51:41,718 INFO L138 SettingsManager]: * Trace refinement strategy used in MCR=CAMEL [2020-04-18 19:51:41,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-04-18 19:51:41,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-04-18 19:51:42,000 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-04-18 19:51:42,015 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-04-18 19:51:42,018 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-04-18 19:51:42,020 INFO L271 PluginConnector]: Initializing CDTParser... [2020-04-18 19:51:42,020 INFO L275 PluginConnector]: CDTParser initialized [2020-04-18 19:51:42,021 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i [2020-04-18 19:51:42,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1ed20380/77e8eedd7a3045e29907dd2463bd212a/FLAG006f994c2 [2020-04-18 19:51:42,552 INFO L306 CDTParser]: Found 1 translation units. [2020-04-18 19:51:42,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe027_pso.opt.i [2020-04-18 19:51:42,579 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1ed20380/77e8eedd7a3045e29907dd2463bd212a/FLAG006f994c2 [2020-04-18 19:51:42,864 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1ed20380/77e8eedd7a3045e29907dd2463bd212a [2020-04-18 19:51:42,874 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-04-18 19:51:42,891 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-04-18 19:51:42,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-04-18 19:51:42,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-04-18 19:51:42,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-04-18 19:51:42,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:51:42" (1/1) ... [2020-04-18 19:51:42,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3459bafd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:42, skipping insertion in model container [2020-04-18 19:51:42,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:51:42" (1/1) ... [2020-04-18 19:51:42,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-04-18 19:51:42,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-04-18 19:51:43,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:51:43,403 INFO L203 MainTranslator]: Completed pre-run [2020-04-18 19:51:43,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-04-18 19:51:43,559 INFO L208 MainTranslator]: Completed translation [2020-04-18 19:51:43,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:43 WrapperNode [2020-04-18 19:51:43,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-04-18 19:51:43,561 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-04-18 19:51:43,561 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-04-18 19:51:43,561 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-04-18 19:51:43,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:43" (1/1) ... [2020-04-18 19:51:43,589 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:43" (1/1) ... [2020-04-18 19:51:43,610 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-04-18 19:51:43,611 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-04-18 19:51:43,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-04-18 19:51:43,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-04-18 19:51:43,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:43" (1/1) ... [2020-04-18 19:51:43,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:43" (1/1) ... [2020-04-18 19:51:43,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:43" (1/1) ... [2020-04-18 19:51:43,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:43" (1/1) ... [2020-04-18 19:51:43,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:43" (1/1) ... [2020-04-18 19:51:43,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:43" (1/1) ... [2020-04-18 19:51:43,634 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:43" (1/1) ... [2020-04-18 19:51:43,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-04-18 19:51:43,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-04-18 19:51:43,638 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-04-18 19:51:43,638 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-04-18 19:51:43,639 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-04-18 19:51:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-04-18 19:51:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-04-18 19:51:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-04-18 19:51:43,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-04-18 19:51:43,723 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-04-18 19:51:43,723 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-04-18 19:51:43,724 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-04-18 19:51:43,724 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-04-18 19:51:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-04-18 19:51:43,725 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-04-18 19:51:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-04-18 19:51:43,725 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-04-18 19:51:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-04-18 19:51:43,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-04-18 19:51:43,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-04-18 19:51:43,728 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-04-18 19:51:44,183 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-04-18 19:51:44,184 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-04-18 19:51:44,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:51:44 BoogieIcfgContainer [2020-04-18 19:51:44,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-04-18 19:51:44,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-04-18 19:51:44,196 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-04-18 19:51:44,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-04-18 19:51:44,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:51:42" (1/3) ... [2020-04-18 19:51:44,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4bb095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:51:44, skipping insertion in model container [2020-04-18 19:51:44,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:51:43" (2/3) ... [2020-04-18 19:51:44,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4bb095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:51:44, skipping insertion in model container [2020-04-18 19:51:44,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:51:44" (3/3) ... [2020-04-18 19:51:44,205 INFO L109 eAbstractionObserver]: Analyzing ICFG safe027_pso.opt.i [2020-04-18 19:51:44,216 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-04-18 19:51:44,217 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-04-18 19:51:44,229 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-04-18 19:51:44,230 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-04-18 19:51:44,257 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,258 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,258 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,258 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,259 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,259 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,260 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,260 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,260 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,261 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,261 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,261 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,262 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,262 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,262 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,263 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,263 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,264 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,264 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,264 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,265 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,265 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,265 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,266 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,269 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,270 WARN L315 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,270 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,270 WARN L315 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,276 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,276 WARN L315 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,276 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,277 WARN L315 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,284 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,284 WARN L315 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,284 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,285 WARN L315 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,296 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,296 WARN L315 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,297 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,297 WARN L315 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-04-18 19:51:44,310 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-04-18 19:51:44,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-04-18 19:51:44,329 INFO L376 AbstractCegarLoop]: Hoare is true [2020-04-18 19:51:44,329 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-04-18 19:51:44,329 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-04-18 19:51:44,329 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-04-18 19:51:44,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-04-18 19:51:44,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-04-18 19:51:44,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-04-18 19:51:44,343 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 82 transitions, 184 flow [2020-04-18 19:51:50,347 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 47253 states. [2020-04-18 19:51:50,349 INFO L276 IsEmpty]: Start isEmpty. Operand 47253 states. [2020-04-18 19:51:50,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:51:50,424 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:51:50,426 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:51:50,426 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:51:50,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:50,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1315035169, now seen corresponding path program 1 times [2020-04-18 19:51:50,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:51:50,442 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1042019998] [2020-04-18 19:51:50,459 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:50,477 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 41 transitions. [2020-04-18 19:51:50,481 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-04-18 19:51:50,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-04-18 19:51:50,482 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:51:50,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:50,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1315035169, now seen corresponding path program 2 times [2020-04-18 19:51:50,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:50,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719711530] [2020-04-18 19:51:50,488 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:51:51,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719711530] [2020-04-18 19:51:51,094 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:51,094 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:51:51,096 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:51,101 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:51,113 INFO L259 McrAutomatonBuilder]: Finished intersection with 42 states and 41 transitions. [2020-04-18 19:51:51,113 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:51,174 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:51:51,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:51:51,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:51:51,181 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 7 states. [2020-04-18 19:51:51,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:51,270 INFO L93 Difference]: Finished difference Result 42 states and 41 transitions. [2020-04-18 19:51:51,270 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 41 transitions. [2020-04-18 19:51:51,270 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:51:51,271 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1042019998] [2020-04-18 19:51:51,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:51:51,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:51:51,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1042019998] [2020-04-18 19:51:51,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:51:51,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:51:51,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:51:51,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:51:51,278 INFO L87 Difference]: Start difference. First operand 47253 states. Second operand 7 states. [2020-04-18 19:51:53,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:53,152 INFO L93 Difference]: Finished difference Result 66405 states and 285205 transitions. [2020-04-18 19:51:53,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-04-18 19:51:53,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-04-18 19:51:53,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:51:53,389 INFO L225 Difference]: With dead ends: 66405 [2020-04-18 19:51:53,389 INFO L226 Difference]: Without dead ends: 21297 [2020-04-18 19:51:53,391 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:51:53,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21297 states. [2020-04-18 19:51:54,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21297 to 21297. [2020-04-18 19:51:54,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21297 states. [2020-04-18 19:51:54,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21297 states to 21297 states and 89713 transitions. [2020-04-18 19:51:54,812 INFO L78 Accepts]: Start accepts. Automaton has 21297 states and 89713 transitions. Word has length 41 [2020-04-18 19:51:54,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:51:54,815 INFO L479 AbstractCegarLoop]: Abstraction has 21297 states and 89713 transitions. [2020-04-18 19:51:54,815 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:51:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 21297 states and 89713 transitions. [2020-04-18 19:51:54,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:51:54,856 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:51:54,857 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:51:54,858 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:51:54,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:54,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1369284514, now seen corresponding path program 1 times [2020-04-18 19:51:54,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:51:54,859 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1277898204] [2020-04-18 19:51:54,860 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:54,867 INFO L259 McrAutomatonBuilder]: Finished intersection with 92 states and 139 transitions. [2020-04-18 19:51:54,871 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-04-18 19:51:54,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:51:54,872 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:51:54,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:54,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1369284514, now seen corresponding path program 2 times [2020-04-18 19:51:54,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:54,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599091509] [2020-04-18 19:51:54,874 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:51:55,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599091509] [2020-04-18 19:51:55,166 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:55,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:51:55,167 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:55,173 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:55,183 INFO L259 McrAutomatonBuilder]: Finished intersection with 80 states and 115 transitions. [2020-04-18 19:51:55,183 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:55,244 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:51:55,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:51:55,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:51:55,246 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 7 states. [2020-04-18 19:51:55,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:55,405 INFO L93 Difference]: Finished difference Result 98 states and 144 transitions. [2020-04-18 19:51:55,405 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 144 transitions. [2020-04-18 19:51:55,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-04-18 19:51:55,406 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:51:55,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:55,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1012700406, now seen corresponding path program 3 times [2020-04-18 19:51:55,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:55,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401790504] [2020-04-18 19:51:55,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:55,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:51:55,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401790504] [2020-04-18 19:51:55,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:55,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:51:55,652 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:55,657 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:55,678 INFO L259 McrAutomatonBuilder]: Finished intersection with 73 states and 101 transitions. [2020-04-18 19:51:55,678 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:55,711 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 7 times. [2020-04-18 19:51:55,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:51:55,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:51:55,712 INFO L87 Difference]: Start difference. First operand 98 states and 144 transitions. Second operand 7 states. [2020-04-18 19:51:55,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:55,865 INFO L93 Difference]: Finished difference Result 98 states and 144 transitions. [2020-04-18 19:51:55,865 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 144 transitions. [2020-04-18 19:51:55,865 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:51:55,866 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1277898204] [2020-04-18 19:51:55,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:51:55,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:51:55,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1277898204] [2020-04-18 19:51:55,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-04-18 19:51:55,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:51:55,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:51:55,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-04-18 19:51:55,870 INFO L87 Difference]: Start difference. First operand 21297 states and 89713 transitions. Second operand 8 states. [2020-04-18 19:51:56,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:56,388 INFO L93 Difference]: Finished difference Result 29697 states and 124283 transitions. [2020-04-18 19:51:56,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:51:56,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-04-18 19:51:56,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:51:56,474 INFO L225 Difference]: With dead ends: 29697 [2020-04-18 19:51:56,474 INFO L226 Difference]: Without dead ends: 14857 [2020-04-18 19:51:56,491 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2020-04-18 19:51:56,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14857 states. [2020-04-18 19:51:58,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14857 to 14857. [2020-04-18 19:51:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14857 states. [2020-04-18 19:51:58,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14857 states to 14857 states and 61547 transitions. [2020-04-18 19:51:58,499 INFO L78 Accepts]: Start accepts. Automaton has 14857 states and 61547 transitions. Word has length 43 [2020-04-18 19:51:58,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:51:58,500 INFO L479 AbstractCegarLoop]: Abstraction has 14857 states and 61547 transitions. [2020-04-18 19:51:58,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-04-18 19:51:58,500 INFO L276 IsEmpty]: Start isEmpty. Operand 14857 states and 61547 transitions. [2020-04-18 19:51:58,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:51:58,530 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:51:58,531 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:51:58,531 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:51:58,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:58,532 INFO L82 PathProgramCache]: Analyzing trace with hash 2075664305, now seen corresponding path program 1 times [2020-04-18 19:51:58,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:51:58,534 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1226699453] [2020-04-18 19:51:58,535 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:58,539 INFO L259 McrAutomatonBuilder]: Finished intersection with 170 states and 341 transitions. [2020-04-18 19:51:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states. [2020-04-18 19:51:58,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-04-18 19:51:58,543 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:51:58,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:58,544 INFO L82 PathProgramCache]: Analyzing trace with hash 945711235, now seen corresponding path program 2 times [2020-04-18 19:51:58,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:58,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524588009] [2020-04-18 19:51:58,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:58,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:51:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:51:58,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524588009] [2020-04-18 19:51:58,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:51:58,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:51:58,727 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:51:58,732 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:58,746 INFO L259 McrAutomatonBuilder]: Finished intersection with 120 states and 205 transitions. [2020-04-18 19:51:58,746 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:51:58,811 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:51:58,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:51:58,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-04-18 19:51:58,812 INFO L87 Difference]: Start difference. First operand 170 states. Second operand 7 states. [2020-04-18 19:51:58,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:58,881 INFO L93 Difference]: Finished difference Result 170 states and 341 transitions. [2020-04-18 19:51:58,881 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 341 transitions. [2020-04-18 19:51:58,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:51:58,882 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1226699453] [2020-04-18 19:51:58,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:51:58,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:51:58,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1226699453] [2020-04-18 19:51:58,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-04-18 19:51:58,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:51:58,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:51:58,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:51:58,889 INFO L87 Difference]: Start difference. First operand 14857 states and 61547 transitions. Second operand 7 states. [2020-04-18 19:51:59,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:51:59,117 INFO L93 Difference]: Finished difference Result 16777 states and 68883 transitions. [2020-04-18 19:51:59,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-04-18 19:51:59,118 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 45 [2020-04-18 19:51:59,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:51:59,169 INFO L225 Difference]: With dead ends: 16777 [2020-04-18 19:51:59,169 INFO L226 Difference]: Without dead ends: 13417 [2020-04-18 19:51:59,170 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-04-18 19:51:59,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13417 states. [2020-04-18 19:51:59,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13417 to 13417. [2020-04-18 19:51:59,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13417 states. [2020-04-18 19:51:59,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13417 states to 13417 states and 55235 transitions. [2020-04-18 19:51:59,887 INFO L78 Accepts]: Start accepts. Automaton has 13417 states and 55235 transitions. Word has length 45 [2020-04-18 19:51:59,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:51:59,888 INFO L479 AbstractCegarLoop]: Abstraction has 13417 states and 55235 transitions. [2020-04-18 19:51:59,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-04-18 19:51:59,889 INFO L276 IsEmpty]: Start isEmpty. Operand 13417 states and 55235 transitions. [2020-04-18 19:51:59,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:51:59,918 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:51:59,918 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:51:59,918 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:51:59,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:59,919 INFO L82 PathProgramCache]: Analyzing trace with hash -698696080, now seen corresponding path program 1 times [2020-04-18 19:51:59,919 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:51:59,919 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1831909183] [2020-04-18 19:51:59,921 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:51:59,930 INFO L259 McrAutomatonBuilder]: Finished intersection with 428 states and 1167 transitions. [2020-04-18 19:51:59,933 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states. [2020-04-18 19:51:59,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:51:59,935 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:51:59,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:51:59,935 INFO L82 PathProgramCache]: Analyzing trace with hash -593359196, now seen corresponding path program 2 times [2020-04-18 19:51:59,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:51:59,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576966420] [2020-04-18 19:51:59,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:51:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:00,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:00,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576966420] [2020-04-18 19:52:00,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:00,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:00,159 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:00,167 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:00,215 INFO L259 McrAutomatonBuilder]: Finished intersection with 242 states and 563 transitions. [2020-04-18 19:52:00,216 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:00,456 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:52:00,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:52:00,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:52:00,457 INFO L87 Difference]: Start difference. First operand 428 states. Second operand 10 states. [2020-04-18 19:52:01,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:01,051 INFO L93 Difference]: Finished difference Result 612 states and 1522 transitions. [2020-04-18 19:52:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1522 transitions. [2020-04-18 19:52:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-04-18 19:52:01,053 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:52:01,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:01,053 INFO L82 PathProgramCache]: Analyzing trace with hash -698696080, now seen corresponding path program 3 times [2020-04-18 19:52:01,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:01,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722348755] [2020-04-18 19:52:01,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:01,229 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722348755] [2020-04-18 19:52:01,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:01,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:52:01,230 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:01,236 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:01,270 INFO L259 McrAutomatonBuilder]: Finished intersection with 210 states and 491 transitions. [2020-04-18 19:52:01,271 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:01,349 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 6 times. [2020-04-18 19:52:01,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:52:01,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=473, Unknown=0, NotChecked=0, Total=650 [2020-04-18 19:52:01,351 INFO L87 Difference]: Start difference. First operand 612 states and 1522 transitions. Second operand 10 states. [2020-04-18 19:52:01,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:01,484 INFO L93 Difference]: Finished difference Result 612 states and 1522 transitions. [2020-04-18 19:52:01,484 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1522 transitions. [2020-04-18 19:52:01,485 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:52:01,486 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1831909183] [2020-04-18 19:52:01,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:52:01,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:52:01,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1831909183] [2020-04-18 19:52:01,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-04-18 19:52:01,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:52:01,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-04-18 19:52:01,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=280, Invalid=650, Unknown=0, NotChecked=0, Total=930 [2020-04-18 19:52:01,488 INFO L87 Difference]: Start difference. First operand 13417 states and 55235 transitions. Second operand 13 states. [2020-04-18 19:52:02,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:02,509 INFO L93 Difference]: Finished difference Result 33017 states and 133299 transitions. [2020-04-18 19:52:02,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-04-18 19:52:02,510 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-04-18 19:52:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:52:02,570 INFO L225 Difference]: With dead ends: 33017 [2020-04-18 19:52:02,570 INFO L226 Difference]: Without dead ends: 17577 [2020-04-18 19:52:02,571 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 750 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=604, Invalid=1846, Unknown=0, NotChecked=0, Total=2450 [2020-04-18 19:52:02,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17577 states. [2020-04-18 19:52:03,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17577 to 12585. [2020-04-18 19:52:03,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12585 states. [2020-04-18 19:52:03,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12585 states to 12585 states and 50805 transitions. [2020-04-18 19:52:03,288 INFO L78 Accepts]: Start accepts. Automaton has 12585 states and 50805 transitions. Word has length 47 [2020-04-18 19:52:03,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:52:03,288 INFO L479 AbstractCegarLoop]: Abstraction has 12585 states and 50805 transitions. [2020-04-18 19:52:03,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-04-18 19:52:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 12585 states and 50805 transitions. [2020-04-18 19:52:03,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:52:03,315 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:52:03,315 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:52:03,315 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:52:03,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:03,315 INFO L82 PathProgramCache]: Analyzing trace with hash 233478989, now seen corresponding path program 1 times [2020-04-18 19:52:03,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:52:03,316 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [218601030] [2020-04-18 19:52:03,317 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:03,338 INFO L259 McrAutomatonBuilder]: Finished intersection with 1226 states and 4225 transitions. [2020-04-18 19:52:03,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states. [2020-04-18 19:52:03,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:52:03,352 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:52:03,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:03,353 INFO L82 PathProgramCache]: Analyzing trace with hash -597904221, now seen corresponding path program 2 times [2020-04-18 19:52:03,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:03,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665129819] [2020-04-18 19:52:03,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:03,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:03,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665129819] [2020-04-18 19:52:03,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:03,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:52:03,490 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:03,496 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:03,604 INFO L259 McrAutomatonBuilder]: Finished intersection with 534 states and 1529 transitions. [2020-04-18 19:52:03,604 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:03,739 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 19 times. [2020-04-18 19:52:03,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:52:03,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:52:03,740 INFO L87 Difference]: Start difference. First operand 1226 states. Second operand 11 states. [2020-04-18 19:52:04,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:04,066 INFO L93 Difference]: Finished difference Result 1379 states and 4573 transitions. [2020-04-18 19:52:04,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 4573 transitions. [2020-04-18 19:52:04,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:52:04,071 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:52:04,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:04,071 INFO L82 PathProgramCache]: Analyzing trace with hash -1561226399, now seen corresponding path program 3 times [2020-04-18 19:52:04,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:04,073 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785900416] [2020-04-18 19:52:04,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:04,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:04,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785900416] [2020-04-18 19:52:04,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:04,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:04,191 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:04,198 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:04,320 INFO L259 McrAutomatonBuilder]: Finished intersection with 458 states and 1317 transitions. [2020-04-18 19:52:04,321 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:04,384 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:52:04,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:52:04,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-04-18 19:52:04,385 INFO L87 Difference]: Start difference. First operand 1379 states and 4573 transitions. Second operand 8 states. [2020-04-18 19:52:04,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:04,621 INFO L93 Difference]: Finished difference Result 1569 states and 4965 transitions. [2020-04-18 19:52:04,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 4965 transitions. [2020-04-18 19:52:04,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-04-18 19:52:04,626 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:52:04,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:04,626 INFO L82 PathProgramCache]: Analyzing trace with hash 233478989, now seen corresponding path program 4 times [2020-04-18 19:52:04,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:04,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563304547] [2020-04-18 19:52:04,627 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:04,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:04,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563304547] [2020-04-18 19:52:04,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:04,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-04-18 19:52:04,720 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:04,726 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:05,896 INFO L259 McrAutomatonBuilder]: Finished intersection with 454 states and 1313 transitions. [2020-04-18 19:52:05,897 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:06,011 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 24 times. [2020-04-18 19:52:06,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-04-18 19:52:06,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2020-04-18 19:52:06,012 INFO L87 Difference]: Start difference. First operand 1569 states and 4965 transitions. Second operand 6 states. [2020-04-18 19:52:06,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:06,086 INFO L93 Difference]: Finished difference Result 1569 states and 4965 transitions. [2020-04-18 19:52:06,086 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 4965 transitions. [2020-04-18 19:52:06,089 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:52:06,090 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [218601030] [2020-04-18 19:52:06,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:52:06,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-04-18 19:52:06,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [218601030] [2020-04-18 19:52:06,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-04-18 19:52:06,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:52:06,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-04-18 19:52:06,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=1148, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:52:06,093 INFO L87 Difference]: Start difference. First operand 12585 states and 50805 transitions. Second operand 18 states. [2020-04-18 19:52:08,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:08,786 INFO L93 Difference]: Finished difference Result 23261 states and 92721 transitions. [2020-04-18 19:52:08,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-04-18 19:52:08,787 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 49 [2020-04-18 19:52:08,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:52:08,824 INFO L225 Difference]: With dead ends: 23261 [2020-04-18 19:52:08,824 INFO L226 Difference]: Without dead ends: 16349 [2020-04-18 19:52:08,828 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4348 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=2131, Invalid=9641, Unknown=0, NotChecked=0, Total=11772 [2020-04-18 19:52:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16349 states. [2020-04-18 19:52:09,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16349 to 12211. [2020-04-18 19:52:09,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12211 states. [2020-04-18 19:52:09,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12211 states to 12211 states and 49095 transitions. [2020-04-18 19:52:09,341 INFO L78 Accepts]: Start accepts. Automaton has 12211 states and 49095 transitions. Word has length 49 [2020-04-18 19:52:09,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:52:09,341 INFO L479 AbstractCegarLoop]: Abstraction has 12211 states and 49095 transitions. [2020-04-18 19:52:09,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-04-18 19:52:09,341 INFO L276 IsEmpty]: Start isEmpty. Operand 12211 states and 49095 transitions. [2020-04-18 19:52:09,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:52:09,361 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:52:09,361 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:52:09,361 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:52:09,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:09,362 INFO L82 PathProgramCache]: Analyzing trace with hash -1844736298, now seen corresponding path program 1 times [2020-04-18 19:52:09,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:52:09,362 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1263260999] [2020-04-18 19:52:09,364 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:09,390 INFO L259 McrAutomatonBuilder]: Finished intersection with 1577 states and 5602 transitions. [2020-04-18 19:52:09,402 INFO L276 IsEmpty]: Start isEmpty. Operand 1577 states. [2020-04-18 19:52:09,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:52:09,407 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:52:09,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:09,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1663875006, now seen corresponding path program 2 times [2020-04-18 19:52:09,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:09,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875621449] [2020-04-18 19:52:09,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:09,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875621449] [2020-04-18 19:52:09,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:09,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:09,512 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:09,516 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:09,561 INFO L259 McrAutomatonBuilder]: Finished intersection with 302 states and 740 transitions. [2020-04-18 19:52:09,561 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:09,670 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:52:09,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:52:09,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-04-18 19:52:09,671 INFO L87 Difference]: Start difference. First operand 1577 states. Second operand 10 states. [2020-04-18 19:52:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:10,635 INFO L93 Difference]: Finished difference Result 2651 states and 8610 transitions. [2020-04-18 19:52:10,635 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 8610 transitions. [2020-04-18 19:52:10,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:52:10,640 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:52:10,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:10,641 INFO L82 PathProgramCache]: Analyzing trace with hash 2007079826, now seen corresponding path program 3 times [2020-04-18 19:52:10,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:10,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820148491] [2020-04-18 19:52:10,641 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:10,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:10,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820148491] [2020-04-18 19:52:10,742 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:10,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:10,742 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:10,748 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:10,823 INFO L259 McrAutomatonBuilder]: Finished intersection with 302 states and 748 transitions. [2020-04-18 19:52:10,824 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:10,866 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 0 times. [2020-04-18 19:52:10,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:52:10,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=258, Invalid=798, Unknown=0, NotChecked=0, Total=1056 [2020-04-18 19:52:10,867 INFO L87 Difference]: Start difference. First operand 2651 states and 8610 transitions. Second operand 7 states. [2020-04-18 19:52:11,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:11,085 INFO L93 Difference]: Finished difference Result 2951 states and 9282 transitions. [2020-04-18 19:52:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 2951 states and 9282 transitions. [2020-04-18 19:52:11,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:52:11,091 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:52:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:11,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1462091452, now seen corresponding path program 4 times [2020-04-18 19:52:11,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:11,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266621996] [2020-04-18 19:52:11,092 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:11,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:11,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:11,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266621996] [2020-04-18 19:52:11,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:11,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:11,173 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:11,179 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:11,269 INFO L259 McrAutomatonBuilder]: Finished intersection with 360 states and 946 transitions. [2020-04-18 19:52:11,269 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:11,345 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 8 times. [2020-04-18 19:52:11,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:52:11,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1350, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:52:11,346 INFO L87 Difference]: Start difference. First operand 2951 states and 9282 transitions. Second operand 8 states. [2020-04-18 19:52:11,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:11,545 INFO L93 Difference]: Finished difference Result 3073 states and 9517 transitions. [2020-04-18 19:52:11,545 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 9517 transitions. [2020-04-18 19:52:11,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-04-18 19:52:11,549 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:52:11,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:11,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1844736298, now seen corresponding path program 5 times [2020-04-18 19:52:11,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:11,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054006798] [2020-04-18 19:52:11,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:11,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:11,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:11,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054006798] [2020-04-18 19:52:11,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:11,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:11,639 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:11,644 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:11,702 INFO L259 McrAutomatonBuilder]: Finished intersection with 356 states and 942 transitions. [2020-04-18 19:52:11,703 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:11,971 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:52:11,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:52:11,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=537, Invalid=2325, Unknown=0, NotChecked=0, Total=2862 [2020-04-18 19:52:11,973 INFO L87 Difference]: Start difference. First operand 3073 states and 9517 transitions. Second operand 7 states. [2020-04-18 19:52:12,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:12,107 INFO L93 Difference]: Finished difference Result 3073 states and 9517 transitions. [2020-04-18 19:52:12,107 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 9517 transitions. [2020-04-18 19:52:12,110 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:52:12,111 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1263260999] [2020-04-18 19:52:12,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:52:12,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:52:12,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1263260999] [2020-04-18 19:52:12,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-04-18 19:52:12,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:52:12,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-04-18 19:52:12,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=582, Invalid=2958, Unknown=0, NotChecked=0, Total=3540 [2020-04-18 19:52:12,113 INFO L87 Difference]: Start difference. First operand 12211 states and 49095 transitions. Second operand 19 states. [2020-04-18 19:52:14,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:14,694 INFO L93 Difference]: Finished difference Result 21056 states and 83078 transitions. [2020-04-18 19:52:14,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2020-04-18 19:52:14,695 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-04-18 19:52:14,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:52:14,729 INFO L225 Difference]: With dead ends: 21056 [2020-04-18 19:52:14,730 INFO L226 Difference]: Without dead ends: 14432 [2020-04-18 19:52:14,734 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 129 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6664 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2337, Invalid=14693, Unknown=0, NotChecked=0, Total=17030 [2020-04-18 19:52:14,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14432 states. [2020-04-18 19:52:15,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14432 to 10525. [2020-04-18 19:52:15,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10525 states. [2020-04-18 19:52:15,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10525 states to 10525 states and 41527 transitions. [2020-04-18 19:52:15,093 INFO L78 Accepts]: Start accepts. Automaton has 10525 states and 41527 transitions. Word has length 50 [2020-04-18 19:52:15,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:52:15,093 INFO L479 AbstractCegarLoop]: Abstraction has 10525 states and 41527 transitions. [2020-04-18 19:52:15,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-04-18 19:52:15,093 INFO L276 IsEmpty]: Start isEmpty. Operand 10525 states and 41527 transitions. [2020-04-18 19:52:15,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:52:15,117 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:52:15,117 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:52:15,117 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:52:15,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:15,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1284618612, now seen corresponding path program 1 times [2020-04-18 19:52:15,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:52:15,118 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1768343385] [2020-04-18 19:52:15,120 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:15,172 INFO L259 McrAutomatonBuilder]: Finished intersection with 2093 states and 7629 transitions. [2020-04-18 19:52:15,190 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states. [2020-04-18 19:52:15,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:52:15,194 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:52:15,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:15,194 INFO L82 PathProgramCache]: Analyzing trace with hash -40517458, now seen corresponding path program 2 times [2020-04-18 19:52:15,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:15,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074795464] [2020-04-18 19:52:15,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:15,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:15,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074795464] [2020-04-18 19:52:15,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:15,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:52:15,309 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:15,317 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:15,557 INFO L259 McrAutomatonBuilder]: Finished intersection with 313 states and 761 transitions. [2020-04-18 19:52:15,558 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:15,732 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 11 times. [2020-04-18 19:52:15,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:52:15,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-04-18 19:52:15,734 INFO L87 Difference]: Start difference. First operand 2093 states. Second operand 11 states. [2020-04-18 19:52:16,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:16,037 INFO L93 Difference]: Finished difference Result 2501 states and 8795 transitions. [2020-04-18 19:52:16,037 INFO L276 IsEmpty]: Start isEmpty. Operand 2501 states and 8795 transitions. [2020-04-18 19:52:16,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:52:16,042 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:52:16,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:16,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1919805420, now seen corresponding path program 3 times [2020-04-18 19:52:16,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:16,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770089600] [2020-04-18 19:52:16,044 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:16,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:16,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770089600] [2020-04-18 19:52:16,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:16,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:52:16,147 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:16,151 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:16,208 INFO L259 McrAutomatonBuilder]: Finished intersection with 381 states and 995 transitions. [2020-04-18 19:52:16,208 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:16,285 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 12 times. [2020-04-18 19:52:16,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-04-18 19:52:16,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2020-04-18 19:52:16,286 INFO L87 Difference]: Start difference. First operand 2501 states and 8795 transitions. Second operand 10 states. [2020-04-18 19:52:16,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:16,563 INFO L93 Difference]: Finished difference Result 3033 states and 10209 transitions. [2020-04-18 19:52:16,564 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 10209 transitions. [2020-04-18 19:52:16,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-04-18 19:52:16,568 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:52:16,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:16,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1307764278, now seen corresponding path program 4 times [2020-04-18 19:52:16,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:16,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816727453] [2020-04-18 19:52:16,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:16,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:16,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816727453] [2020-04-18 19:52:16,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:16,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:16,671 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:16,679 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:16,770 INFO L259 McrAutomatonBuilder]: Finished intersection with 407 states and 1095 transitions. [2020-04-18 19:52:16,770 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:16,926 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 20 times. [2020-04-18 19:52:16,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:52:16,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=1129, Unknown=0, NotChecked=0, Total=1406 [2020-04-18 19:52:16,928 INFO L87 Difference]: Start difference. First operand 3033 states and 10209 transitions. Second operand 7 states. [2020-04-18 19:52:17,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:17,220 INFO L93 Difference]: Finished difference Result 3033 states and 10209 transitions. [2020-04-18 19:52:17,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3033 states and 10209 transitions. [2020-04-18 19:52:17,224 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:52:17,224 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1768343385] [2020-04-18 19:52:17,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:52:17,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:52:17,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1768343385] [2020-04-18 19:52:17,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-04-18 19:52:17,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:52:17,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-04-18 19:52:17,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=338, Invalid=1732, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 19:52:17,226 INFO L87 Difference]: Start difference. First operand 10525 states and 41527 transitions. Second operand 20 states. [2020-04-18 19:52:21,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:21,143 INFO L93 Difference]: Finished difference Result 18673 states and 71813 transitions. [2020-04-18 19:52:21,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-04-18 19:52:21,143 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2020-04-18 19:52:21,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:52:21,172 INFO L225 Difference]: With dead ends: 18673 [2020-04-18 19:52:21,172 INFO L226 Difference]: Without dead ends: 12868 [2020-04-18 19:52:21,176 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5998 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=2156, Invalid=13846, Unknown=0, NotChecked=0, Total=16002 [2020-04-18 19:52:21,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12868 states. [2020-04-18 19:52:21,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12868 to 8266. [2020-04-18 19:52:21,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8266 states. [2020-04-18 19:52:21,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8266 states to 8266 states and 31450 transitions. [2020-04-18 19:52:21,367 INFO L78 Accepts]: Start accepts. Automaton has 8266 states and 31450 transitions. Word has length 51 [2020-04-18 19:52:21,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:52:21,367 INFO L479 AbstractCegarLoop]: Abstraction has 8266 states and 31450 transitions. [2020-04-18 19:52:21,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-04-18 19:52:21,367 INFO L276 IsEmpty]: Start isEmpty. Operand 8266 states and 31450 transitions. [2020-04-18 19:52:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:52:21,378 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:52:21,379 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:52:21,379 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:52:21,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:21,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1819259521, now seen corresponding path program 1 times [2020-04-18 19:52:21,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:52:21,379 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [1727690589] [2020-04-18 19:52:21,381 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:21,440 INFO L259 McrAutomatonBuilder]: Finished intersection with 3477 states and 13165 transitions. [2020-04-18 19:52:21,467 INFO L276 IsEmpty]: Start isEmpty. Operand 3477 states. [2020-04-18 19:52:21,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:52:21,476 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:52:21,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:21,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1529729421, now seen corresponding path program 2 times [2020-04-18 19:52:21,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:21,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162157732] [2020-04-18 19:52:21,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:21,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:21,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:21,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162157732] [2020-04-18 19:52:21,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:21,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:21,556 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:21,561 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:21,654 INFO L259 McrAutomatonBuilder]: Finished intersection with 451 states and 1192 transitions. [2020-04-18 19:52:21,654 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:21,713 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:52:21,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:52:21,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:52:21,714 INFO L87 Difference]: Start difference. First operand 3477 states. Second operand 8 states. [2020-04-18 19:52:21,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:21,946 INFO L93 Difference]: Finished difference Result 4197 states and 15291 transitions. [2020-04-18 19:52:21,946 INFO L276 IsEmpty]: Start isEmpty. Operand 4197 states and 15291 transitions. [2020-04-18 19:52:21,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:52:21,954 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:52:21,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:21,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1051328901, now seen corresponding path program 3 times [2020-04-18 19:52:21,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:21,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881924001] [2020-04-18 19:52:21,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:22,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:22,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881924001] [2020-04-18 19:52:22,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:22,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:52:22,058 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:22,064 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:22,154 INFO L259 McrAutomatonBuilder]: Finished intersection with 405 states and 1032 transitions. [2020-04-18 19:52:22,155 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:22,432 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 28 times. [2020-04-18 19:52:22,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-04-18 19:52:22,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=552, Unknown=0, NotChecked=0, Total=756 [2020-04-18 19:52:22,433 INFO L87 Difference]: Start difference. First operand 4197 states and 15291 transitions. Second operand 16 states. [2020-04-18 19:52:22,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:22,935 INFO L93 Difference]: Finished difference Result 5721 states and 20393 transitions. [2020-04-18 19:52:22,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 20393 transitions. [2020-04-18 19:52:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-04-18 19:52:22,946 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:52:22,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:22,947 INFO L82 PathProgramCache]: Analyzing trace with hash 493595991, now seen corresponding path program 4 times [2020-04-18 19:52:22,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:22,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388688507] [2020-04-18 19:52:22,947 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:23,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388688507] [2020-04-18 19:52:23,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:23,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:52:23,040 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:23,200 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:23,259 INFO L259 McrAutomatonBuilder]: Finished intersection with 257 states and 608 transitions. [2020-04-18 19:52:23,260 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:23,397 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:52:23,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:52:23,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=383, Invalid=1339, Unknown=0, NotChecked=0, Total=1722 [2020-04-18 19:52:23,398 INFO L87 Difference]: Start difference. First operand 5721 states and 20393 transitions. Second operand 8 states. [2020-04-18 19:52:23,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:23,843 INFO L93 Difference]: Finished difference Result 5721 states and 20393 transitions. [2020-04-18 19:52:23,843 INFO L276 IsEmpty]: Start isEmpty. Operand 5721 states and 20393 transitions. [2020-04-18 19:52:23,851 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:52:23,851 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [1727690589] [2020-04-18 19:52:23,852 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:52:23,852 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-04-18 19:52:23,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [1727690589] [2020-04-18 19:52:23,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-04-18 19:52:23,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:52:23,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-04-18 19:52:23,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=2203, Unknown=0, NotChecked=0, Total=2756 [2020-04-18 19:52:23,853 INFO L87 Difference]: Start difference. First operand 8266 states and 31450 transitions. Second operand 25 states. [2020-04-18 19:52:25,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:25,491 INFO L93 Difference]: Finished difference Result 8320 states and 30937 transitions. [2020-04-18 19:52:25,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-04-18 19:52:25,491 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 53 [2020-04-18 19:52:25,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:52:25,504 INFO L225 Difference]: With dead ends: 8320 [2020-04-18 19:52:25,504 INFO L226 Difference]: Without dead ends: 4360 [2020-04-18 19:52:25,506 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 204 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2412 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1467, Invalid=6189, Unknown=0, NotChecked=0, Total=7656 [2020-04-18 19:52:25,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4360 states. [2020-04-18 19:52:25,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4360 to 3214. [2020-04-18 19:52:25,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3214 states. [2020-04-18 19:52:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3214 states to 3214 states and 11509 transitions. [2020-04-18 19:52:25,591 INFO L78 Accepts]: Start accepts. Automaton has 3214 states and 11509 transitions. Word has length 53 [2020-04-18 19:52:25,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:52:25,592 INFO L479 AbstractCegarLoop]: Abstraction has 3214 states and 11509 transitions. [2020-04-18 19:52:25,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-04-18 19:52:25,592 INFO L276 IsEmpty]: Start isEmpty. Operand 3214 states and 11509 transitions. [2020-04-18 19:52:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 19:52:25,602 INFO L417 BasicCegarLoop]: Found error trace [2020-04-18 19:52:25,602 INFO L425 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-04-18 19:52:25,603 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-04-18 19:52:25,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:25,603 INFO L82 PathProgramCache]: Analyzing trace with hash 80743156, now seen corresponding path program 1 times [2020-04-18 19:52:25,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy MCR [2020-04-18 19:52:25,603 INFO L354 FreeRefinementEngine]: Using trace check StrategyModuleMcr [337801609] [2020-04-18 19:52:25,606 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:25,773 INFO L259 McrAutomatonBuilder]: Finished intersection with 5717 states and 22517 transitions. [2020-04-18 19:52:25,817 INFO L276 IsEmpty]: Start isEmpty. Operand 5717 states. [2020-04-18 19:52:25,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 19:52:25,833 INFO L105 Mcr]: ---- MCR iteration 0 ---- [2020-04-18 19:52:25,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:25,833 INFO L82 PathProgramCache]: Analyzing trace with hash 10828748, now seen corresponding path program 2 times [2020-04-18 19:52:25,834 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:25,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400181650] [2020-04-18 19:52:25,840 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:25,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:25,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400181650] [2020-04-18 19:52:25,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:25,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:25,938 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:25,946 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:26,077 INFO L259 McrAutomatonBuilder]: Finished intersection with 525 states and 1433 transitions. [2020-04-18 19:52:26,078 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:26,127 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 17 times. [2020-04-18 19:52:26,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:52:26,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-04-18 19:52:26,128 INFO L87 Difference]: Start difference. First operand 5717 states. Second operand 8 states. [2020-04-18 19:52:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:26,374 INFO L93 Difference]: Finished difference Result 7877 states and 30335 transitions. [2020-04-18 19:52:26,374 INFO L276 IsEmpty]: Start isEmpty. Operand 7877 states and 30335 transitions. [2020-04-18 19:52:26,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 19:52:26,385 INFO L105 Mcr]: ---- MCR iteration 1 ---- [2020-04-18 19:52:26,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:26,385 INFO L82 PathProgramCache]: Analyzing trace with hash -1026335686, now seen corresponding path program 3 times [2020-04-18 19:52:26,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:26,386 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528081959] [2020-04-18 19:52:26,386 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:26,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:26,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528081959] [2020-04-18 19:52:26,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:26,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:26,476 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:26,482 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:26,702 INFO L259 McrAutomatonBuilder]: Finished intersection with 423 states and 1071 transitions. [2020-04-18 19:52:26,702 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:26,723 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 10 times. [2020-04-18 19:52:26,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:52:26,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-04-18 19:52:26,725 INFO L87 Difference]: Start difference. First operand 7877 states and 30335 transitions. Second operand 7 states. [2020-04-18 19:52:26,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:26,972 INFO L93 Difference]: Finished difference Result 10817 states and 40761 transitions. [2020-04-18 19:52:26,972 INFO L276 IsEmpty]: Start isEmpty. Operand 10817 states and 40761 transitions. [2020-04-18 19:52:26,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 19:52:26,986 INFO L105 Mcr]: ---- MCR iteration 2 ---- [2020-04-18 19:52:26,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:26,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1882768406, now seen corresponding path program 4 times [2020-04-18 19:52:26,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:26,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616051996] [2020-04-18 19:52:26,987 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:27,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:27,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616051996] [2020-04-18 19:52:27,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:27,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-04-18 19:52:27,069 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:27,076 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:27,148 INFO L259 McrAutomatonBuilder]: Finished intersection with 275 states and 647 transitions. [2020-04-18 19:52:27,149 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:27,266 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 15 times. [2020-04-18 19:52:27,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-04-18 19:52:27,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=826, Unknown=0, NotChecked=0, Total=992 [2020-04-18 19:52:27,268 INFO L87 Difference]: Start difference. First operand 10817 states and 40761 transitions. Second operand 8 states. [2020-04-18 19:52:27,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:27,861 INFO L93 Difference]: Finished difference Result 10881 states and 40821 transitions. [2020-04-18 19:52:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 10881 states and 40821 transitions. [2020-04-18 19:52:27,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 19:52:27,880 INFO L105 Mcr]: ---- MCR iteration 3 ---- [2020-04-18 19:52:27,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:27,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1889113630, now seen corresponding path program 5 times [2020-04-18 19:52:27,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:27,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272000506] [2020-04-18 19:52:27,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:27,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:27,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272000506] [2020-04-18 19:52:27,978 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:27,978 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:27,979 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:27,986 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:28,056 INFO L259 McrAutomatonBuilder]: Finished intersection with 284 states and 666 transitions. [2020-04-18 19:52:28,056 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:28,106 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 16 times. [2020-04-18 19:52:28,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-04-18 19:52:28,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=1776, Unknown=0, NotChecked=0, Total=2070 [2020-04-18 19:52:28,107 INFO L87 Difference]: Start difference. First operand 10881 states and 40821 transitions. Second operand 7 states. [2020-04-18 19:52:28,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:28,427 INFO L93 Difference]: Finished difference Result 15873 states and 57121 transitions. [2020-04-18 19:52:28,427 INFO L276 IsEmpty]: Start isEmpty. Operand 15873 states and 57121 transitions. [2020-04-18 19:52:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-04-18 19:52:28,445 INFO L105 Mcr]: ---- MCR iteration 4 ---- [2020-04-18 19:52:28,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-04-18 19:52:28,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1522456770, now seen corresponding path program 6 times [2020-04-18 19:52:28,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-04-18 19:52:28,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948212670] [2020-04-18 19:52:28,446 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-04-18 19:52:28,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-04-18 19:52:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-04-18 19:52:28,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948212670] [2020-04-18 19:52:28,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-04-18 19:52:28,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-04-18 19:52:28,540 INFO L201 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-04-18 19:52:28,546 INFO L256 McrAutomatonBuilder]: Started intersection. [2020-04-18 19:52:28,671 INFO L259 McrAutomatonBuilder]: Finished intersection with 542 states and 1473 transitions. [2020-04-18 19:52:28,671 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-04-18 19:52:28,900 INFO L356 McrAutomatonBuilder]: Construction finished. Needed to calculate wp 36 times. [2020-04-18 19:52:28,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-04-18 19:52:28,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=2896, Unknown=0, NotChecked=0, Total=3306 [2020-04-18 19:52:28,901 INFO L87 Difference]: Start difference. First operand 15873 states and 57121 transitions. Second operand 11 states. [2020-04-18 19:52:31,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:31,589 INFO L93 Difference]: Finished difference Result 33019 states and 114782 transitions. [2020-04-18 19:52:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 33019 states and 114782 transitions. [2020-04-18 19:52:31,647 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:52:31,648 INFO L354 FreeRefinementEngine]: Using interpolant generator StrategyModuleMcr [337801609] [2020-04-18 19:52:31,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-04-18 19:52:31,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-04-18 19:52:31,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder StrategyModuleMcr [337801609] [2020-04-18 19:52:31,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-04-18 19:52:31,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy MCR [2020-04-18 19:52:31,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-04-18 19:52:31,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=990, Invalid=6842, Unknown=0, NotChecked=0, Total=7832 [2020-04-18 19:52:31,650 INFO L87 Difference]: Start difference. First operand 3214 states and 11509 transitions. Second operand 23 states. [2020-04-18 19:52:33,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-04-18 19:52:33,349 INFO L93 Difference]: Finished difference Result 3308 states and 11875 transitions. [2020-04-18 19:52:33,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-04-18 19:52:33,349 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 55 [2020-04-18 19:52:33,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-04-18 19:52:33,350 INFO L225 Difference]: With dead ends: 3308 [2020-04-18 19:52:33,350 INFO L226 Difference]: Without dead ends: 0 [2020-04-18 19:52:33,352 INFO L678 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5641 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2006, Invalid=13996, Unknown=0, NotChecked=0, Total=16002 [2020-04-18 19:52:33,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-04-18 19:52:33,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-04-18 19:52:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-04-18 19:52:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-04-18 19:52:33,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-04-18 19:52:33,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-04-18 19:52:33,353 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-04-18 19:52:33,353 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-04-18 19:52:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-04-18 19:52:33,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-04-18 19:52:33,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.04 07:52:33 BasicIcfg [2020-04-18 19:52:33,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-04-18 19:52:33,359 INFO L168 Benchmark]: Toolchain (without parser) took 50484.17 ms. Allocated memory was 138.9 MB in the beginning and 1.7 GB in the end (delta: 1.6 GB). Free memory was 101.1 MB in the beginning and 861.6 MB in the end (delta: -760.5 MB). Peak memory consumption was 839.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:52:33,360 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-04-18 19:52:33,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 667.97 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.1 MB in the beginning and 159.3 MB in the end (delta: -60.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-04-18 19:52:33,361 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.92 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 157.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-04-18 19:52:33,362 INFO L168 Benchmark]: Boogie Preprocessor took 26.97 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:52:33,362 INFO L168 Benchmark]: RCFGBuilder took 555.69 ms. Allocated memory is still 202.9 MB. Free memory was 155.2 MB in the beginning and 131.6 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-04-18 19:52:33,362 INFO L168 Benchmark]: TraceAbstraction took 49161.94 ms. Allocated memory was 202.9 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 131.0 MB in the beginning and 861.6 MB in the end (delta: -730.6 MB). Peak memory consumption was 805.0 MB. Max. memory is 7.1 GB. [2020-04-18 19:52:33,365 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 667.97 ms. Allocated memory was 138.9 MB in the beginning and 202.9 MB in the end (delta: 64.0 MB). Free memory was 99.1 MB in the beginning and 159.3 MB in the end (delta: -60.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 49.92 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 157.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.97 ms. Allocated memory is still 202.9 MB. Free memory was 157.2 MB in the beginning and 155.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 555.69 ms. Allocated memory is still 202.9 MB. Free memory was 155.2 MB in the beginning and 131.6 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 49161.94 ms. Allocated memory was 202.9 MB in the beginning and 1.7 GB in the end (delta: 1.5 GB). Free memory was 131.0 MB in the beginning and 861.6 MB in the end (delta: -730.6 MB). Peak memory consumption was 805.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 81 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 49.0s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 16.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 1006 SDtfs, 9118 SDslu, 7686 SDs, 0 SdLazy, 2529 SolverSat, 1468 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2165 GetRequests, 1506 SyntacticMatches, 0 SemanticMatches, 659 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25886 ImplicationChecksByTransitivity, 16.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47253occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.9s AutomataMinimizationTime, 9 MinimizatonAttempts, 18785 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...