/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/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 13:39:52,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 13:39:52,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 13:39:52,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 13:39:52,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 13:39:52,269 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 13:39:52,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 13:39:52,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 13:39:52,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 13:39:52,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 13:39:52,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 13:39:52,276 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 13:39:52,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 13:39:52,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 13:39:52,279 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 13:39:52,280 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 13:39:52,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 13:39:52,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 13:39:52,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 13:39:52,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 13:39:52,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 13:39:52,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 13:39:52,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 13:39:52,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 13:39:52,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 13:39:52,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 13:39:52,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 13:39:52,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 13:39:52,293 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 13:39:52,294 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 13:39:52,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 13:39:52,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 13:39:52,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 13:39:52,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 13:39:52,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 13:39:52,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 13:39:52,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 13:39:52,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 13:39:52,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 13:39:52,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 13:39:52,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 13:39:52,301 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-10-16 13:39:52,337 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 13:39:52,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 13:39:52,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 13:39:52,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 13:39:52,339 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 13:39:52,339 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 13:39:52,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 13:39:52,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 13:39:52,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 13:39:52,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 13:39:52,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 13:39:52,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 13:39:52,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 13:39:52,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 13:39:52,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 13:39:52,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 13:39:52,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 13:39:52,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 13:39:52,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 13:39:52,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 13:39:52,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 13:39:52,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:39:52,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 13:39:52,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-10-16 13:39:52,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 13:39:52,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 13:39:52,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 13:39:52,343 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-10-16 13:39:52,343 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-10-16 13:39:52,343 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 13:39:52,344 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-10-16 13:39:52,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 13:39:52,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 13:39:52,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 13:39:52,687 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 13:39:52,688 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 13:39:52,689 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-16 13:39:52,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10498a6d4/dae8f064ad3e4b808d4c4d0af2940660/FLAG5bb1482f4 [2020-10-16 13:39:53,302 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 13:39:53,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe016_tso.opt.i [2020-10-16 13:39:53,324 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10498a6d4/dae8f064ad3e4b808d4c4d0af2940660/FLAG5bb1482f4 [2020-10-16 13:39:53,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/10498a6d4/dae8f064ad3e4b808d4c4d0af2940660 [2020-10-16 13:39:53,599 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 13:39:53,601 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 13:39:53,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 13:39:53,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 13:39:53,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 13:39:53,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:53" (1/1) ... [2020-10-16 13:39:53,610 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6428aca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:53, skipping insertion in model container [2020-10-16 13:39:53,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:39:53" (1/1) ... [2020-10-16 13:39:53,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 13:39:53,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 13:39:54,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:39:54,125 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 13:39:54,170 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 13:39:54,251 INFO L208 MainTranslator]: Completed translation [2020-10-16 13:39:54,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54 WrapperNode [2020-10-16 13:39:54,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 13:39:54,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 13:39:54,253 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 13:39:54,253 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 13:39:54,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,303 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 13:39:54,303 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 13:39:54,303 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 13:39:54,303 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 13:39:54,313 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... [2020-10-16 13:39:54,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 13:39:54,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 13:39:54,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 13:39:54,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 13:39:54,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 13:39:54,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 13:39:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 13:39:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 13:39:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 13:39:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 13:39:54,402 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 13:39:54,402 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 13:39:54,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 13:39:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 13:39:54,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 13:39:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-10-16 13:39:54,403 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-10-16 13:39:54,403 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 13:39:54,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 13:39:54,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 13:39:54,405 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 13:39:54,854 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 13:39:54,854 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 13:39:54,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:54 BoogieIcfgContainer [2020-10-16 13:39:54,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 13:39:54,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 13:39:54,859 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 13:39:54,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 13:39:54,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:39:53" (1/3) ... [2020-10-16 13:39:54,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cf6437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:54, skipping insertion in model container [2020-10-16 13:39:54,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:39:54" (2/3) ... [2020-10-16 13:39:54,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22cf6437 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:39:54, skipping insertion in model container [2020-10-16 13:39:54,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:39:54" (3/3) ... [2020-10-16 13:39:54,866 INFO L111 eAbstractionObserver]: Analyzing ICFG safe016_tso.opt.i [2020-10-16 13:39:54,878 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 13:39:54,879 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-16 13:39:54,887 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 13:39:54,888 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 13:39:54,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,919 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,919 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,920 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,920 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,921 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,921 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,922 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,922 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,922 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,922 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,923 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,924 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,924 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,924 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,925 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,925 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,925 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,926 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,926 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,926 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,927 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,931 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,931 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,931 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,932 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,938 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,939 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,939 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,942 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,942 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,942 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,942 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,944 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,945 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,945 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,945 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 13:39:54,947 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 13:39:54,959 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 13:39:54,978 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 13:39:54,978 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 13:39:54,978 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-16 13:39:54,978 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-10-16 13:39:54,978 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 13:39:54,978 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 13:39:54,979 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 13:39:54,979 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 13:39:54,991 INFO L137 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-10-16 13:39:54,991 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-16 13:39:54,993 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 80 transitions, 180 flow [2020-10-16 13:39:54,995 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-10-16 13:39:55,040 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-10-16 13:39:55,040 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 13:39:55,046 INFO L80 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 76 events. 2/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 59 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2020-10-16 13:39:55,050 INFO L117 LiptonReduction]: Number of co-enabled transitions 1822 [2020-10-16 13:39:56,359 INFO L132 LiptonReduction]: Checked pairs total: 3057 [2020-10-16 13:39:56,359 INFO L134 LiptonReduction]: Total number of compositions: 63 [2020-10-16 13:39:56,367 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-10-16 13:39:56,426 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-10-16 13:39:56,428 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-10-16 13:39:56,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 13:39:56,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:56,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:56,440 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:56,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:56,446 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-10-16 13:39:56,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:56,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39195007] [2020-10-16 13:39:56,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:56,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:56,655 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39195007] [2020-10-16 13:39:56,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:56,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:56,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [928333190] [2020-10-16 13:39:56,660 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:56,665 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:56,684 INFO L258 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-10-16 13:39:56,685 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:56,691 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:56,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-10-16 13:39:56,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:56,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-10-16 13:39:56,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:39:56,710 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-10-16 13:39:56,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:56,760 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-10-16 13:39:56,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-10-16 13:39:56,762 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-10-16 13:39:56,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:56,797 INFO L225 Difference]: With dead ends: 850 [2020-10-16 13:39:56,797 INFO L226 Difference]: Without dead ends: 706 [2020-10-16 13:39:56,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-10-16 13:39:56,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-10-16 13:39:56,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-10-16 13:39:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-10-16 13:39:56,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-10-16 13:39:56,939 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-10-16 13:39:56,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:56,940 INFO L481 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-10-16 13:39:56,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-10-16 13:39:56,940 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-10-16 13:39:56,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 13:39:56,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:56,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:56,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 13:39:56,948 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:56,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:56,948 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-10-16 13:39:56,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:56,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029303470] [2020-10-16 13:39:56,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:57,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:57,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029303470] [2020-10-16 13:39:57,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:57,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:57,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1163398970] [2020-10-16 13:39:57,102 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:57,103 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:57,104 INFO L258 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-10-16 13:39:57,105 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:57,108 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:57,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:57,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:57,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:57,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:57,111 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-10-16 13:39:57,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:57,163 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-10-16 13:39:57,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:57,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 13:39:57,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:57,170 INFO L225 Difference]: With dead ends: 802 [2020-10-16 13:39:57,170 INFO L226 Difference]: Without dead ends: 658 [2020-10-16 13:39:57,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:57,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-10-16 13:39:57,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-10-16 13:39:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-10-16 13:39:57,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-10-16 13:39:57,205 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-10-16 13:39:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:57,206 INFO L481 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-10-16 13:39:57,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-10-16 13:39:57,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 13:39:57,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:57,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:57,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 13:39:57,209 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:57,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:57,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-10-16 13:39:57,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:57,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898565297] [2020-10-16 13:39:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:57,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:57,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:57,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898565297] [2020-10-16 13:39:57,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:57,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:57,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1079354808] [2020-10-16 13:39:57,286 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:57,287 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:57,289 INFO L258 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-10-16 13:39:57,289 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:57,296 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:57,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:57,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:57,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:57,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:57,298 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-10-16 13:39:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:57,337 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-10-16 13:39:57,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:57,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-16 13:39:57,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:57,343 INFO L225 Difference]: With dead ends: 738 [2020-10-16 13:39:57,344 INFO L226 Difference]: Without dead ends: 618 [2020-10-16 13:39:57,344 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:57,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-16 13:39:57,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-10-16 13:39:57,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-10-16 13:39:57,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-10-16 13:39:57,369 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-10-16 13:39:57,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:57,369 INFO L481 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-10-16 13:39:57,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:57,369 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-10-16 13:39:57,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-16 13:39:57,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:57,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:57,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 13:39:57,372 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:57,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:57,372 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-10-16 13:39:57,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:57,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852531776] [2020-10-16 13:39:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:57,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:57,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:57,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852531776] [2020-10-16 13:39:57,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:57,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:57,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [267017808] [2020-10-16 13:39:57,432 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:57,433 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:57,436 INFO L258 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-10-16 13:39:57,436 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:57,484 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:57,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:57,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:57,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:57,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:57,486 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 4 states. [2020-10-16 13:39:57,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:57,514 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-10-16 13:39:57,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:57,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-16 13:39:57,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:57,520 INFO L225 Difference]: With dead ends: 658 [2020-10-16 13:39:57,520 INFO L226 Difference]: Without dead ends: 578 [2020-10-16 13:39:57,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:57,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-10-16 13:39:57,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-10-16 13:39:57,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-10-16 13:39:57,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-10-16 13:39:57,573 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-10-16 13:39:57,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:57,573 INFO L481 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-10-16 13:39:57,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:57,574 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-10-16 13:39:57,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:39:57,575 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:57,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:57,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 13:39:57,576 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:57,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:57,576 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-10-16 13:39:57,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:57,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917917529] [2020-10-16 13:39:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:57,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:57,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917917529] [2020-10-16 13:39:57,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:57,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:57,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1352269018] [2020-10-16 13:39:57,628 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:57,630 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:57,633 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 43 transitions. [2020-10-16 13:39:57,633 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:57,656 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:57,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:57,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:57,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:57,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:57,658 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-10-16 13:39:57,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:57,694 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-10-16 13:39:57,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:57,695 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 13:39:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:57,700 INFO L225 Difference]: With dead ends: 814 [2020-10-16 13:39:57,700 INFO L226 Difference]: Without dead ends: 618 [2020-10-16 13:39:57,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-16 13:39:57,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-10-16 13:39:57,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-10-16 13:39:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-10-16 13:39:57,720 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-10-16 13:39:57,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:57,721 INFO L481 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-10-16 13:39:57,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-10-16 13:39:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:39:57,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:57,722 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:57,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 13:39:57,723 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:57,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-10-16 13:39:57,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:57,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016760341] [2020-10-16 13:39:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:57,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016760341] [2020-10-16 13:39:57,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:57,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:57,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [872989972] [2020-10-16 13:39:57,791 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:57,793 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:57,798 INFO L258 McrAutomatonBuilder]: Finished intersection with 26 states and 38 transitions. [2020-10-16 13:39:57,798 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:57,874 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:57,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:39:57,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:57,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:39:57,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:57,875 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 5 states. [2020-10-16 13:39:57,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:57,930 INFO L93 Difference]: Finished difference Result 838 states and 2616 transitions. [2020-10-16 13:39:57,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:57,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-16 13:39:57,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:57,935 INFO L225 Difference]: With dead ends: 838 [2020-10-16 13:39:57,935 INFO L226 Difference]: Without dead ends: 490 [2020-10-16 13:39:57,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:57,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-16 13:39:57,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2020-10-16 13:39:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-10-16 13:39:57,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1516 transitions. [2020-10-16 13:39:57,952 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1516 transitions. Word has length 14 [2020-10-16 13:39:57,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:57,952 INFO L481 AbstractCegarLoop]: Abstraction has 490 states and 1516 transitions. [2020-10-16 13:39:57,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:39:57,953 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1516 transitions. [2020-10-16 13:39:57,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 13:39:57,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:57,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:57,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 13:39:57,954 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:57,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:57,955 INFO L82 PathProgramCache]: Analyzing trace with hash -635139139, now seen corresponding path program 2 times [2020-10-16 13:39:57,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:57,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466135338] [2020-10-16 13:39:57,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:57,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466135338] [2020-10-16 13:39:57,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:57,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 13:39:57,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1526650709] [2020-10-16 13:39:57,998 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:58,000 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:58,003 INFO L258 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-10-16 13:39:58,003 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:58,052 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:58,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:58,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:58,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:58,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:58,053 INFO L87 Difference]: Start difference. First operand 490 states and 1516 transitions. Second operand 4 states. [2020-10-16 13:39:58,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:58,074 INFO L93 Difference]: Finished difference Result 514 states and 1556 transitions. [2020-10-16 13:39:58,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:58,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-10-16 13:39:58,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:58,078 INFO L225 Difference]: With dead ends: 514 [2020-10-16 13:39:58,079 INFO L226 Difference]: Without dead ends: 466 [2020-10-16 13:39:58,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:58,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-10-16 13:39:58,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2020-10-16 13:39:58,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-16 13:39:58,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1428 transitions. [2020-10-16 13:39:58,094 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1428 transitions. Word has length 14 [2020-10-16 13:39:58,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:58,095 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 1428 transitions. [2020-10-16 13:39:58,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:58,095 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1428 transitions. [2020-10-16 13:39:58,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:39:58,096 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:58,097 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:58,097 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 13:39:58,097 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:58,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:58,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-10-16 13:39:58,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:58,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291862242] [2020-10-16 13:39:58,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:58,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:58,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291862242] [2020-10-16 13:39:58,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:58,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:58,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1336219500] [2020-10-16 13:39:58,140 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:58,142 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:58,146 INFO L258 McrAutomatonBuilder]: Finished intersection with 38 states and 61 transitions. [2020-10-16 13:39:58,147 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:58,170 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:58,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 13:39:58,171 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:58,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 13:39:58,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 13:39:58,171 INFO L87 Difference]: Start difference. First operand 466 states and 1428 transitions. Second operand 4 states. [2020-10-16 13:39:58,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:58,201 INFO L93 Difference]: Finished difference Result 686 states and 2008 transitions. [2020-10-16 13:39:58,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:58,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-16 13:39:58,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:58,205 INFO L225 Difference]: With dead ends: 686 [2020-10-16 13:39:58,205 INFO L226 Difference]: Without dead ends: 490 [2020-10-16 13:39:58,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:58,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-10-16 13:39:58,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 442. [2020-10-16 13:39:58,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-10-16 13:39:58,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1272 transitions. [2020-10-16 13:39:58,221 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1272 transitions. Word has length 15 [2020-10-16 13:39:58,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:58,221 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 1272 transitions. [2020-10-16 13:39:58,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 13:39:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1272 transitions. [2020-10-16 13:39:58,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:39:58,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:58,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:58,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 13:39:58,223 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:58,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:58,224 INFO L82 PathProgramCache]: Analyzing trace with hash -1081767860, now seen corresponding path program 1 times [2020-10-16 13:39:58,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:58,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700095129] [2020-10-16 13:39:58,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:58,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:58,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700095129] [2020-10-16 13:39:58,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:58,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:58,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1285975678] [2020-10-16 13:39:58,298 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:58,301 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:58,313 INFO L258 McrAutomatonBuilder]: Finished intersection with 46 states and 85 transitions. [2020-10-16 13:39:58,314 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:58,433 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:58,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:39:58,434 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:58,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:39:58,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:58,434 INFO L87 Difference]: Start difference. First operand 442 states and 1272 transitions. Second operand 5 states. [2020-10-16 13:39:58,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:58,469 INFO L93 Difference]: Finished difference Result 578 states and 1616 transitions. [2020-10-16 13:39:58,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 13:39:58,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 13:39:58,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:58,472 INFO L225 Difference]: With dead ends: 578 [2020-10-16 13:39:58,472 INFO L226 Difference]: Without dead ends: 254 [2020-10-16 13:39:58,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:58,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-16 13:39:58,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-10-16 13:39:58,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-16 13:39:58,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-10-16 13:39:58,480 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-10-16 13:39:58,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:58,480 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-10-16 13:39:58,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:39:58,481 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-10-16 13:39:58,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-16 13:39:58,482 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:58,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:58,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 13:39:58,482 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:58,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:58,482 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-10-16 13:39:58,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:58,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477346732] [2020-10-16 13:39:58,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:58,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:58,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477346732] [2020-10-16 13:39:58,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:58,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 13:39:58,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1655000822] [2020-10-16 13:39:58,522 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:58,524 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:58,529 INFO L258 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-10-16 13:39:58,529 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:58,542 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,561 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,571 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,581 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,592 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,606 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,629 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17833#(not (= 4 ~__unbuffered_cnt~0))] [2020-10-16 13:39:58,629 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:39:58,630 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:58,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:39:58,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:58,630 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 5 states. [2020-10-16 13:39:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:58,693 INFO L93 Difference]: Finished difference Result 244 states and 585 transitions. [2020-10-16 13:39:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:39:58,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-16 13:39:58,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:58,695 INFO L225 Difference]: With dead ends: 244 [2020-10-16 13:39:58,695 INFO L226 Difference]: Without dead ends: 171 [2020-10-16 13:39:58,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:58,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-16 13:39:58,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-10-16 13:39:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-16 13:39:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-10-16 13:39:58,700 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 15 [2020-10-16 13:39:58,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:58,701 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-10-16 13:39:58,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:39:58,701 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-10-16 13:39:58,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 13:39:58,702 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:58,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:58,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 13:39:58,702 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:58,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:58,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-10-16 13:39:58,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:58,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202961112] [2020-10-16 13:39:58,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:58,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:58,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202961112] [2020-10-16 13:39:58,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:58,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-16 13:39:58,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1655418424] [2020-10-16 13:39:58,751 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:58,753 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:58,760 INFO L258 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-10-16 13:39:58,760 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:58,768 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,798 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,812 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:58,893 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:58,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 13:39:58,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:58,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 13:39:58,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 13:39:58,895 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-10-16 13:39:58,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:58,946 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-10-16 13:39:58,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:39:58,947 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-16 13:39:58,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:58,948 INFO L225 Difference]: With dead ends: 147 [2020-10-16 13:39:58,948 INFO L226 Difference]: Without dead ends: 107 [2020-10-16 13:39:58,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 13 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:58,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-16 13:39:58,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-10-16 13:39:58,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-16 13:39:58,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-10-16 13:39:58,952 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-10-16 13:39:58,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:58,953 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-10-16 13:39:58,953 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 13:39:58,953 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-10-16 13:39:58,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:39:58,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:58,954 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:58,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 13:39:58,954 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:58,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:58,955 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-10-16 13:39:58,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:58,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515630617] [2020-10-16 13:39:58,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:58,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:58,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:58,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515630617] [2020-10-16 13:39:58,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:58,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 13:39:58,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1499883746] [2020-10-16 13:39:59,000 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:59,002 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:59,008 INFO L258 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2020-10-16 13:39:59,009 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:59,014 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-10-16 13:39:59,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 13:39:59,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:59,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 13:39:59,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-16 13:39:59,016 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-10-16 13:39:59,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:59,049 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-10-16 13:39:59,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 13:39:59,050 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-16 13:39:59,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:59,051 INFO L225 Difference]: With dead ends: 121 [2020-10-16 13:39:59,051 INFO L226 Difference]: Without dead ends: 105 [2020-10-16 13:39:59,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-16 13:39:59,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-16 13:39:59,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-10-16 13:39:59,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-16 13:39:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-10-16 13:39:59,055 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-10-16 13:39:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:59,055 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-10-16 13:39:59,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 13:39:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-10-16 13:39:59,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-16 13:39:59,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 13:39:59,057 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 13:39:59,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 13:39:59,057 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 13:39:59,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 13:39:59,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-10-16 13:39:59,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 13:39:59,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364113307] [2020-10-16 13:39:59,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 13:39:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 13:39:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 13:39:59,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364113307] [2020-10-16 13:39:59,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 13:39:59,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-16 13:39:59,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [165446836] [2020-10-16 13:39:59,114 INFO L200 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-10-16 13:39:59,118 INFO L255 McrAutomatonBuilder]: Started intersection. [2020-10-16 13:39:59,151 INFO L258 McrAutomatonBuilder]: Finished intersection with 37 states and 51 transitions. [2020-10-16 13:39:59,151 INFO L282 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-10-16 13:39:59,165 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-10-16 13:39:59,179 INFO L313 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [19136#(<= ~__unbuffered_cnt~0 0)] [2020-10-16 13:39:59,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-16 13:39:59,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 13:39:59,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-16 13:39:59,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-16 13:39:59,180 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 8 states. [2020-10-16 13:39:59,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 13:39:59,217 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-10-16 13:39:59,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 13:39:59,218 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-16 13:39:59,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 13:39:59,218 INFO L225 Difference]: With dead ends: 93 [2020-10-16 13:39:59,218 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 13:39:59,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-16 13:39:59,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 13:39:59,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 13:39:59,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 13:39:59,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 13:39:59,219 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-16 13:39:59,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 13:39:59,220 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 13:39:59,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-16 13:39:59,220 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 13:39:59,220 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 13:39:59,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 13:39:59,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 01:39:59 BasicIcfg [2020-10-16 13:39:59,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 13:39:59,226 INFO L168 Benchmark]: Toolchain (without parser) took 5625.02 ms. Allocated memory was 138.4 MB in the beginning and 296.2 MB in the end (delta: 157.8 MB). Free memory was 99.7 MB in the beginning and 246.6 MB in the end (delta: -146.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:59,227 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-16 13:39:59,228 INFO L168 Benchmark]: CACSL2BoogieTranslator took 649.82 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 157.8 MB in the end (delta: -58.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:59,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.24 ms. Allocated memory is still 201.3 MB. Free memory was 157.8 MB in the beginning and 155.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:59,230 INFO L168 Benchmark]: Boogie Preprocessor took 27.95 ms. Allocated memory is still 201.3 MB. Free memory was 155.1 MB in the beginning and 153.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:59,230 INFO L168 Benchmark]: RCFGBuilder took 525.72 ms. Allocated memory is still 201.3 MB. Free memory was 153.8 MB in the beginning and 130.1 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. [2020-10-16 13:39:59,231 INFO L168 Benchmark]: TraceAbstraction took 4365.53 ms. Allocated memory was 201.3 MB in the beginning and 296.2 MB in the end (delta: 94.9 MB). Free memory was 129.5 MB in the beginning and 246.6 MB in the end (delta: -117.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-16 13:39:59,234 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 649.82 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 99.5 MB in the beginning and 157.8 MB in the end (delta: -58.3 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.24 ms. Allocated memory is still 201.3 MB. Free memory was 157.8 MB in the beginning and 155.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.95 ms. Allocated memory is still 201.3 MB. Free memory was 155.1 MB in the beginning and 153.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 525.72 ms. Allocated memory is still 201.3 MB. Free memory was 153.8 MB in the beginning and 130.1 MB in the end (delta: 23.6 MB). Peak memory consumption was 23.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4365.53 ms. Allocated memory was 201.3 MB in the beginning and 296.2 MB in the end (delta: 94.9 MB). Free memory was 129.5 MB in the beginning and 246.6 MB in the end (delta: -117.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 940 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 76 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.3s, 91 PlacesBefore, 39 PlacesAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 5 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 3057 MoverChecksTotal - 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, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.2s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 353 SDtfs, 265 SDslu, 567 SDs, 0 SdLazy, 203 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 207 GetRequests, 143 SyntacticMatches, 14 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=850occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 130 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 188 NumberOfCodeBlocks, 188 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 175 ConstructedInterpolants, 0 QuantifiedInterpolants, 7133 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...