/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.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-60655ea [2020-09-15 23:46:41,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-15 23:46:41,843 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-15 23:46:41,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-15 23:46:41,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-15 23:46:41,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-15 23:46:41,907 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-15 23:46:41,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-15 23:46:41,914 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-15 23:46:41,918 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-15 23:46:41,919 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-15 23:46:41,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-15 23:46:41,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-15 23:46:41,924 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-15 23:46:41,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-15 23:46:41,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-15 23:46:41,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-15 23:46:41,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-15 23:46:41,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-15 23:46:41,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-15 23:46:41,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-15 23:46:41,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-15 23:46:41,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-15 23:46:41,948 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-15 23:46:41,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-15 23:46:41,953 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-15 23:46:41,953 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-15 23:46:41,957 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-15 23:46:41,957 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-15 23:46:41,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-15 23:46:41,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-15 23:46:41,961 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-15 23:46:41,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-15 23:46:41,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-15 23:46:41,964 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-15 23:46:41,964 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-15 23:46:41,965 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-15 23:46:41,965 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-15 23:46:41,965 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-15 23:46:41,966 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-15 23:46:41,968 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-15 23:46:41,969 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 [2020-09-15 23:46:42,018 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-15 23:46:42,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-15 23:46:42,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-15 23:46:42,021 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-15 23:46:42,021 INFO L138 SettingsManager]: * Use SBE=true [2020-09-15 23:46:42,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-15 23:46:42,022 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-15 23:46:42,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-15 23:46:42,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-15 23:46:42,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-15 23:46:42,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-15 23:46:42,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-15 23:46:42,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-15 23:46:42,024 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-15 23:46:42,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-15 23:46:42,025 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-15 23:46:42,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-15 23:46:42,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-15 23:46:42,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-15 23:46:42,026 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-15 23:46:42,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-15 23:46:42,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:46:42,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-15 23:46:42,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-15 23:46:42,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-15 23:46:42,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-15 23:46:42,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-15 23:46:42,027 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-15 23:46:42,028 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-15 23:46:42,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-15 23:46:42,028 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-15 23:46:42,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-15 23:46:42,505 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-15 23:46:42,510 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-15 23:46:42,512 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-15 23:46:42,512 INFO L275 PluginConnector]: CDTParser initialized [2020-09-15 23:46:42,514 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-09-15 23:46:42,610 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362958746/a1c70bd91a854fec9ec3f39f86f1a681/FLAG3adbb4113 [2020-09-15 23:46:43,304 INFO L306 CDTParser]: Found 1 translation units. [2020-09-15 23:46:43,307 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe016_tso.oepc.i [2020-09-15 23:46:43,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362958746/a1c70bd91a854fec9ec3f39f86f1a681/FLAG3adbb4113 [2020-09-15 23:46:43,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/362958746/a1c70bd91a854fec9ec3f39f86f1a681 [2020-09-15 23:46:43,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-15 23:46:43,535 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-15 23:46:43,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-15 23:46:43,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-15 23:46:43,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-15 23:46:43,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:46:43" (1/1) ... [2020-09-15 23:46:43,547 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14382dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:46:43, skipping insertion in model container [2020-09-15 23:46:43,548 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.09 11:46:43" (1/1) ... [2020-09-15 23:46:43,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-15 23:46:43,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-15 23:46:44,157 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:46:44,172 INFO L203 MainTranslator]: Completed pre-run [2020-09-15 23:46:44,221 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-15 23:46:44,310 INFO L208 MainTranslator]: Completed translation [2020-09-15 23:46:44,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:46:44 WrapperNode [2020-09-15 23:46:44,311 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-15 23:46:44,312 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-15 23:46:44,312 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-15 23:46:44,312 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-15 23:46:44,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:46:44" (1/1) ... [2020-09-15 23:46:44,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:46:44" (1/1) ... [2020-09-15 23:46:44,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-15 23:46:44,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-15 23:46:44,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-15 23:46:44,367 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-15 23:46:44,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:46:44" (1/1) ... [2020-09-15 23:46:44,380 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:46:44" (1/1) ... [2020-09-15 23:46:44,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:46:44" (1/1) ... [2020-09-15 23:46:44,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:46:44" (1/1) ... [2020-09-15 23:46:44,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:46:44" (1/1) ... [2020-09-15 23:46:44,394 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:46:44" (1/1) ... [2020-09-15 23:46:44,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:46:44" (1/1) ... [2020-09-15 23:46:44,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-15 23:46:44,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-15 23:46:44,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-15 23:46:44,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-15 23:46:44,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:46:44" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-15 23:46:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-15 23:46:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-15 23:46:44,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-15 23:46:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-15 23:46:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-15 23:46:44,485 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-15 23:46:44,485 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-15 23:46:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-15 23:46:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-15 23:46:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-15 23:46:44,486 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2020-09-15 23:46:44,486 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2020-09-15 23:46:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-15 23:46:44,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-15 23:46:44,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-15 23:46:44,489 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-15 23:46:44,876 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-15 23:46:44,876 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-15 23:46:44,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:46:44 BoogieIcfgContainer [2020-09-15 23:46:44,882 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-15 23:46:44,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-15 23:46:44,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-15 23:46:44,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-15 23:46:44,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.09 11:46:43" (1/3) ... [2020-09-15 23:46:44,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6451088a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:46:44, skipping insertion in model container [2020-09-15 23:46:44,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.09 11:46:44" (2/3) ... [2020-09-15 23:46:44,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6451088a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.09 11:46:44, skipping insertion in model container [2020-09-15 23:46:44,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.09 11:46:44" (3/3) ... [2020-09-15 23:46:44,900 INFO L109 eAbstractionObserver]: Analyzing ICFG safe016_tso.oepc.i [2020-09-15 23:46:44,917 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-15 23:46:44,918 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-15 23:46:44,928 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-15 23:46:44,930 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-15 23:46:44,968 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,968 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,969 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,969 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,970 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,970 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,970 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,971 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,971 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,971 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,971 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,972 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,972 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,972 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,973 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,973 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,973 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,974 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,974 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,974 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,975 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,975 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,975 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,976 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,980 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,981 WARN L313 ript$VariableManager]: TermVariabe |P3Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,981 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,981 WARN L313 ript$VariableManager]: TermVariabe P3Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,989 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,989 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,990 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,990 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,992 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,993 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,993 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,993 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,996 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,997 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork3_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,997 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:44,997 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork3_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-15 23:46:45,023 INFO L251 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-09-15 23:46:45,049 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-15 23:46:45,050 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-15 23:46:45,050 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-15 23:46:45,050 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-15 23:46:45,050 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-15 23:46:45,050 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-15 23:46:45,051 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-15 23:46:45,051 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-15 23:46:45,071 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 80 transitions, 180 flow [2020-09-15 23:46:45,074 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-15 23:46:45,137 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-15 23:46:45,137 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:46:45,145 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. [2020-09-15 23:46:45,148 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 91 places, 80 transitions, 180 flow [2020-09-15 23:46:45,173 INFO L129 PetriNetUnfolder]: 2/76 cut-off events. [2020-09-15 23:46:45,173 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-15 23:46:45,174 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. [2020-09-15 23:46:45,178 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1822 [2020-09-15 23:46:45,179 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-15 23:46:46,560 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-09-15 23:46:46,666 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2895 [2020-09-15 23:46:46,666 INFO L214 etLargeBlockEncoding]: Total number of compositions: 62 [2020-09-15 23:46:46,671 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 39 places, 27 transitions, 74 flow [2020-09-15 23:46:46,731 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 850 states. [2020-09-15 23:46:46,734 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states. [2020-09-15 23:46:46,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-15 23:46:46,746 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:46:46,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:46:46,748 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:46:46,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:46:46,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1118879254, now seen corresponding path program 1 times [2020-09-15 23:46:46,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:46:46,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916486916] [2020-09-15 23:46:46,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:46:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:46:46,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:46:46,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916486916] [2020-09-15 23:46:46,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:46:46,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:46:46,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1554131442] [2020-09-15 23:46:46,998 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:46:47,002 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:46:47,020 INFO L274 McrAutomatonBuilder]: Finished intersection with 11 states and 10 transitions. [2020-09-15 23:46:47,021 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:46:47,024 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:46:47,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-15 23:46:47,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:46:47,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-15 23:46:47,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-15 23:46:47,048 INFO L87 Difference]: Start difference. First operand 850 states. Second operand 2 states. [2020-09-15 23:46:47,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:46:47,084 INFO L93 Difference]: Finished difference Result 850 states and 2994 transitions. [2020-09-15 23:46:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-15 23:46:47,086 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-09-15 23:46:47,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:46:47,118 INFO L225 Difference]: With dead ends: 850 [2020-09-15 23:46:47,118 INFO L226 Difference]: Without dead ends: 706 [2020-09-15 23:46:47,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-15 23:46:47,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2020-09-15 23:46:47,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 706. [2020-09-15 23:46:47,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 706 states. [2020-09-15 23:46:47,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 2442 transitions. [2020-09-15 23:46:47,248 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 2442 transitions. Word has length 10 [2020-09-15 23:46:47,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:46:47,249 INFO L479 AbstractCegarLoop]: Abstraction has 706 states and 2442 transitions. [2020-09-15 23:46:47,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-15 23:46:47,250 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 2442 transitions. [2020-09-15 23:46:47,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-15 23:46:47,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:46:47,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:46:47,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-15 23:46:47,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:46:47,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:46:47,259 INFO L82 PathProgramCache]: Analyzing trace with hash -325524913, now seen corresponding path program 1 times [2020-09-15 23:46:47,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:46:47,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812275154] [2020-09-15 23:46:47,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:46:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:46:47,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:46:47,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812275154] [2020-09-15 23:46:47,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:46:47,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:46:47,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1843268335] [2020-09-15 23:46:47,491 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:46:47,492 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:46:47,494 INFO L274 McrAutomatonBuilder]: Finished intersection with 12 states and 11 transitions. [2020-09-15 23:46:47,494 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:46:47,494 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:46:47,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:46:47,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:46:47,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:46:47,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:46:47,498 INFO L87 Difference]: Start difference. First operand 706 states and 2442 transitions. Second operand 4 states. [2020-09-15 23:46:47,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:46:47,560 INFO L93 Difference]: Finished difference Result 802 states and 2662 transitions. [2020-09-15 23:46:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:46:47,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-15 23:46:47,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:46:47,570 INFO L225 Difference]: With dead ends: 802 [2020-09-15 23:46:47,570 INFO L226 Difference]: Without dead ends: 658 [2020-09-15 23:46:47,571 INFO L675 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 [2020-09-15 23:46:47,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2020-09-15 23:46:47,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2020-09-15 23:46:47,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 658 states. [2020-09-15 23:46:47,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2230 transitions. [2020-09-15 23:46:47,604 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2230 transitions. Word has length 11 [2020-09-15 23:46:47,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:46:47,605 INFO L479 AbstractCegarLoop]: Abstraction has 658 states and 2230 transitions. [2020-09-15 23:46:47,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:46:47,605 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2230 transitions. [2020-09-15 23:46:47,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-15 23:46:47,607 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:46:47,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:46:47,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-15 23:46:47,608 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:46:47,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:46:47,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1502334909, now seen corresponding path program 1 times [2020-09-15 23:46:47,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:46:47,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149631493] [2020-09-15 23:46:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:46:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:46:47,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:46:47,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149631493] [2020-09-15 23:46:47,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:46:47,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:46:47,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1405027959] [2020-09-15 23:46:47,759 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:46:47,760 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:46:47,762 INFO L274 McrAutomatonBuilder]: Finished intersection with 14 states and 14 transitions. [2020-09-15 23:46:47,762 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:46:47,771 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:46:47,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:46:47,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:46:47,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:46:47,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:46:47,773 INFO L87 Difference]: Start difference. First operand 658 states and 2230 transitions. Second operand 4 states. [2020-09-15 23:46:47,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:46:47,841 INFO L93 Difference]: Finished difference Result 738 states and 2404 transitions. [2020-09-15 23:46:47,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:46:47,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-09-15 23:46:47,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:46:47,855 INFO L225 Difference]: With dead ends: 738 [2020-09-15 23:46:47,855 INFO L226 Difference]: Without dead ends: 618 [2020-09-15 23:46:47,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:46:47,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-09-15 23:46:47,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2020-09-15 23:46:47,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 618 states. [2020-09-15 23:46:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 2058 transitions. [2020-09-15 23:46:47,887 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 2058 transitions. Word has length 12 [2020-09-15 23:46:47,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:46:47,888 INFO L479 AbstractCegarLoop]: Abstraction has 618 states and 2058 transitions. [2020-09-15 23:46:47,888 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:46:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 2058 transitions. [2020-09-15 23:46:47,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-15 23:46:47,893 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:46:47,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:46:47,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-15 23:46:47,893 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:46:47,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:46:47,894 INFO L82 PathProgramCache]: Analyzing trace with hash 672248787, now seen corresponding path program 1 times [2020-09-15 23:46:47,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:46:47,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909621432] [2020-09-15 23:46:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:46:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:46:48,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:46:48,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909621432] [2020-09-15 23:46:48,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:46:48,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:46:48,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [97553837] [2020-09-15 23:46:48,074 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:46:48,079 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:46:48,082 INFO L274 McrAutomatonBuilder]: Finished intersection with 22 states and 30 transitions. [2020-09-15 23:46:48,082 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:46:48,161 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:46:48,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:46:48,162 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:46:48,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:46:48,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:46:48,162 INFO L87 Difference]: Start difference. First operand 618 states and 2058 transitions. Second operand 4 states. [2020-09-15 23:46:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:46:48,198 INFO L93 Difference]: Finished difference Result 658 states and 2130 transitions. [2020-09-15 23:46:48,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:46:48,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-15 23:46:48,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:46:48,204 INFO L225 Difference]: With dead ends: 658 [2020-09-15 23:46:48,205 INFO L226 Difference]: Without dead ends: 578 [2020-09-15 23:46:48,209 INFO L675 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 [2020-09-15 23:46:48,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-15 23:46:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 578. [2020-09-15 23:46:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 578 states. [2020-09-15 23:46:48,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 1906 transitions. [2020-09-15 23:46:48,241 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 1906 transitions. Word has length 13 [2020-09-15 23:46:48,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:46:48,241 INFO L479 AbstractCegarLoop]: Abstraction has 578 states and 1906 transitions. [2020-09-15 23:46:48,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:46:48,241 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 1906 transitions. [2020-09-15 23:46:48,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 23:46:48,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:46:48,243 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:46:48,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-15 23:46:48,243 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:46:48,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:46:48,244 INFO L82 PathProgramCache]: Analyzing trace with hash 796896076, now seen corresponding path program 1 times [2020-09-15 23:46:48,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:46:48,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923642051] [2020-09-15 23:46:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:46:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:46:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:46:48,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923642051] [2020-09-15 23:46:48,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:46:48,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:46:48,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [883577555] [2020-09-15 23:46:48,355 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:46:48,357 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:46:48,361 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 43 transitions. [2020-09-15 23:46:48,361 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:46:48,410 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:46:48,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:46:48,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:46:48,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:46:48,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:46:48,412 INFO L87 Difference]: Start difference. First operand 578 states and 1906 transitions. Second operand 4 states. [2020-09-15 23:46:48,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:46:48,459 INFO L93 Difference]: Finished difference Result 814 states and 2558 transitions. [2020-09-15 23:46:48,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:46:48,460 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-15 23:46:48,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:46:48,464 INFO L225 Difference]: With dead ends: 814 [2020-09-15 23:46:48,465 INFO L226 Difference]: Without dead ends: 618 [2020-09-15 23:46:48,465 INFO L675 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 [2020-09-15 23:46:48,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-09-15 23:46:48,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 538. [2020-09-15 23:46:48,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2020-09-15 23:46:48,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 1706 transitions. [2020-09-15 23:46:48,484 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 1706 transitions. Word has length 14 [2020-09-15 23:46:48,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:46:48,484 INFO L479 AbstractCegarLoop]: Abstraction has 538 states and 1706 transitions. [2020-09-15 23:46:48,484 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:46:48,484 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 1706 transitions. [2020-09-15 23:46:48,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 23:46:48,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:46:48,486 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:46:48,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-15 23:46:48,486 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:46:48,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:46:48,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1106275611, now seen corresponding path program 1 times [2020-09-15 23:46:48,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:46:48,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891094436] [2020-09-15 23:46:48,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:46:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:46:48,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:46:48,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891094436] [2020-09-15 23:46:48,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:46:48,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:46:48,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2098204606] [2020-09-15 23:46:48,560 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:46:48,562 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:46:48,564 INFO L274 McrAutomatonBuilder]: Finished intersection with 26 states and 38 transitions. [2020-09-15 23:46:48,565 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:46:48,616 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:46:48,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:46:48,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:46:48,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:46:48,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:46:48,618 INFO L87 Difference]: Start difference. First operand 538 states and 1706 transitions. Second operand 5 states. [2020-09-15 23:46:48,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:46:48,661 INFO L93 Difference]: Finished difference Result 838 states and 2616 transitions. [2020-09-15 23:46:48,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:46:48,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-15 23:46:48,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:46:48,666 INFO L225 Difference]: With dead ends: 838 [2020-09-15 23:46:48,666 INFO L226 Difference]: Without dead ends: 490 [2020-09-15 23:46:48,667 INFO L675 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 [2020-09-15 23:46:48,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-09-15 23:46:48,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2020-09-15 23:46:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-09-15 23:46:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 1516 transitions. [2020-09-15 23:46:48,682 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 1516 transitions. Word has length 14 [2020-09-15 23:46:48,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:46:48,683 INFO L479 AbstractCegarLoop]: Abstraction has 490 states and 1516 transitions. [2020-09-15 23:46:48,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:46:48,683 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 1516 transitions. [2020-09-15 23:46:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-15 23:46:48,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:46:48,684 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:46:48,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-15 23:46:48,685 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:46:48,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:46:48,685 INFO L82 PathProgramCache]: Analyzing trace with hash -635139139, now seen corresponding path program 2 times [2020-09-15 23:46:48,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:46:48,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782504542] [2020-09-15 23:46:48,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:46:48,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:46:48,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:46:48,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782504542] [2020-09-15 23:46:48,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:46:48,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-15 23:46:48,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1991954301] [2020-09-15 23:46:48,748 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:46:48,749 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:46:48,752 INFO L274 McrAutomatonBuilder]: Finished intersection with 28 states and 42 transitions. [2020-09-15 23:46:48,752 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:46:48,810 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:46:48,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:46:48,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:46:48,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:46:48,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:46:48,812 INFO L87 Difference]: Start difference. First operand 490 states and 1516 transitions. Second operand 4 states. [2020-09-15 23:46:48,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:46:48,834 INFO L93 Difference]: Finished difference Result 514 states and 1556 transitions. [2020-09-15 23:46:48,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:46:48,835 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-15 23:46:48,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:46:48,838 INFO L225 Difference]: With dead ends: 514 [2020-09-15 23:46:48,839 INFO L226 Difference]: Without dead ends: 466 [2020-09-15 23:46:48,839 INFO L675 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 [2020-09-15 23:46:48,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-09-15 23:46:48,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 466. [2020-09-15 23:46:48,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-09-15 23:46:48,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 1428 transitions. [2020-09-15 23:46:48,854 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 1428 transitions. Word has length 14 [2020-09-15 23:46:48,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:46:48,854 INFO L479 AbstractCegarLoop]: Abstraction has 466 states and 1428 transitions. [2020-09-15 23:46:48,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:46:48,854 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 1428 transitions. [2020-09-15 23:46:48,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 23:46:48,856 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:46:48,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:46:48,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-15 23:46:48,856 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:46:48,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:46:48,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1523462552, now seen corresponding path program 1 times [2020-09-15 23:46:48,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:46:48,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437085013] [2020-09-15 23:46:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:46:48,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:46:48,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:46:48,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437085013] [2020-09-15 23:46:48,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:46:48,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:46:48,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [239409252] [2020-09-15 23:46:48,951 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:46:48,953 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:46:48,958 INFO L274 McrAutomatonBuilder]: Finished intersection with 38 states and 61 transitions. [2020-09-15 23:46:48,958 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:46:48,997 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:46:48,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-15 23:46:48,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:46:49,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-15 23:46:49,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-15 23:46:49,000 INFO L87 Difference]: Start difference. First operand 466 states and 1428 transitions. Second operand 4 states. [2020-09-15 23:46:49,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:46:49,037 INFO L93 Difference]: Finished difference Result 686 states and 2008 transitions. [2020-09-15 23:46:49,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:46:49,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-15 23:46:49,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:46:49,041 INFO L225 Difference]: With dead ends: 686 [2020-09-15 23:46:49,042 INFO L226 Difference]: Without dead ends: 490 [2020-09-15 23:46:49,043 INFO L675 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 [2020-09-15 23:46:49,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-09-15 23:46:49,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 442. [2020-09-15 23:46:49,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-09-15 23:46:49,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 1272 transitions. [2020-09-15 23:46:49,061 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 1272 transitions. Word has length 15 [2020-09-15 23:46:49,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:46:49,062 INFO L479 AbstractCegarLoop]: Abstraction has 442 states and 1272 transitions. [2020-09-15 23:46:49,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-15 23:46:49,062 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 1272 transitions. [2020-09-15 23:46:49,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 23:46:49,063 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:46:49,063 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:46:49,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-15 23:46:49,064 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:46:49,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:46:49,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1081767860, now seen corresponding path program 1 times [2020-09-15 23:46:49,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:46:49,065 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85174588] [2020-09-15 23:46:49,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:46:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:46:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:46:49,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85174588] [2020-09-15 23:46:49,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:46:49,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:46:49,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1004949296] [2020-09-15 23:46:49,168 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:46:49,170 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:46:49,176 INFO L274 McrAutomatonBuilder]: Finished intersection with 46 states and 85 transitions. [2020-09-15 23:46:49,176 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:46:49,324 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:46:49,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:46:49,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:46:49,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:46:49,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:46:49,326 INFO L87 Difference]: Start difference. First operand 442 states and 1272 transitions. Second operand 5 states. [2020-09-15 23:46:49,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:46:49,364 INFO L93 Difference]: Finished difference Result 578 states and 1616 transitions. [2020-09-15 23:46:49,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-15 23:46:49,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-15 23:46:49,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:46:49,367 INFO L225 Difference]: With dead ends: 578 [2020-09-15 23:46:49,367 INFO L226 Difference]: Without dead ends: 254 [2020-09-15 23:46:49,367 INFO L675 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 [2020-09-15 23:46:49,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-09-15 23:46:49,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2020-09-15 23:46:49,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-09-15 23:46:49,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 691 transitions. [2020-09-15 23:46:49,376 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 691 transitions. Word has length 15 [2020-09-15 23:46:49,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:46:49,376 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 691 transitions. [2020-09-15 23:46:49,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:46:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 691 transitions. [2020-09-15 23:46:49,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-15 23:46:49,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:46:49,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:46:49,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-15 23:46:49,377 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:46:49,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:46:49,378 INFO L82 PathProgramCache]: Analyzing trace with hash 807678122, now seen corresponding path program 2 times [2020-09-15 23:46:49,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:46:49,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856077679] [2020-09-15 23:46:49,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:46:49,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:46:49,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:46:49,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856077679] [2020-09-15 23:46:49,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:46:49,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-15 23:46:49,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [959790303] [2020-09-15 23:46:49,435 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:46:49,437 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:46:49,441 INFO L274 McrAutomatonBuilder]: Finished intersection with 34 states and 55 transitions. [2020-09-15 23:46:49,441 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:46:49,463 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:46:49,487 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:46:49,497 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:46:49,515 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:46:49,524 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:46:49,543 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:46:49,561 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [17833#(not (= 4 ~__unbuffered_cnt~0))] [2020-09-15 23:46:49,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:46:49,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:46:49,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:46:49,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:46:49,562 INFO L87 Difference]: Start difference. First operand 254 states and 691 transitions. Second operand 5 states. [2020-09-15 23:46:49,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:46:49,640 INFO L93 Difference]: Finished difference Result 244 states and 585 transitions. [2020-09-15 23:46:49,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:46:49,640 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-09-15 23:46:49,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:46:49,642 INFO L225 Difference]: With dead ends: 244 [2020-09-15 23:46:49,642 INFO L226 Difference]: Without dead ends: 171 [2020-09-15 23:46:49,642 INFO L675 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 [2020-09-15 23:46:49,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-09-15 23:46:49,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2020-09-15 23:46:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-15 23:46:49,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 378 transitions. [2020-09-15 23:46:49,647 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 378 transitions. Word has length 15 [2020-09-15 23:46:49,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:46:49,648 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 378 transitions. [2020-09-15 23:46:49,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:46:49,648 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 378 transitions. [2020-09-15 23:46:49,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-15 23:46:49,649 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:46:49,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:46:49,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-15 23:46:49,649 INFO L427 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:46:49,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:46:49,650 INFO L82 PathProgramCache]: Analyzing trace with hash 1331262194, now seen corresponding path program 1 times [2020-09-15 23:46:49,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:46:49,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539234584] [2020-09-15 23:46:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:46:49,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:46:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:46:49,720 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539234584] [2020-09-15 23:46:49,720 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:46:49,720 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-15 23:46:49,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1965591426] [2020-09-15 23:46:49,721 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:46:49,723 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:46:49,729 INFO L274 McrAutomatonBuilder]: Finished intersection with 45 states and 77 transitions. [2020-09-15 23:46:49,729 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:46:49,739 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:46:49,755 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:46:49,777 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:46:49,882 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:46:49,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-15 23:46:49,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:46:49,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-15 23:46:49,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-15 23:46:49,884 INFO L87 Difference]: Start difference. First operand 171 states and 378 transitions. Second operand 6 states. [2020-09-15 23:46:49,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:46:49,966 INFO L93 Difference]: Finished difference Result 147 states and 307 transitions. [2020-09-15 23:46:49,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:46:49,967 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-15 23:46:49,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:46:49,968 INFO L225 Difference]: With dead ends: 147 [2020-09-15 23:46:49,968 INFO L226 Difference]: Without dead ends: 107 [2020-09-15 23:46:49,968 INFO L675 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 [2020-09-15 23:46:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-09-15 23:46:49,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-09-15 23:46:49,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-15 23:46:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 217 transitions. [2020-09-15 23:46:49,973 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 217 transitions. Word has length 17 [2020-09-15 23:46:49,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:46:49,973 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 217 transitions. [2020-09-15 23:46:49,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-15 23:46:49,974 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 217 transitions. [2020-09-15 23:46:49,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 23:46:49,974 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:46:49,975 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:46:49,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-15 23:46:49,975 INFO L427 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:46:49,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:46:49,976 INFO L82 PathProgramCache]: Analyzing trace with hash 461519417, now seen corresponding path program 1 times [2020-09-15 23:46:49,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:46:49,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640568648] [2020-09-15 23:46:49,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:46:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:46:50,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:46:50,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640568648] [2020-09-15 23:46:50,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:46:50,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-15 23:46:50,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [2099200199] [2020-09-15 23:46:50,040 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:46:50,042 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:46:50,047 INFO L274 McrAutomatonBuilder]: Finished intersection with 29 states and 36 transitions. [2020-09-15 23:46:50,047 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:46:50,053 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-15 23:46:50,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-15 23:46:50,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:46:50,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-15 23:46:50,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-15 23:46:50,055 INFO L87 Difference]: Start difference. First operand 107 states and 217 transitions. Second operand 5 states. [2020-09-15 23:46:50,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:46:50,085 INFO L93 Difference]: Finished difference Result 121 states and 234 transitions. [2020-09-15 23:46:50,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-15 23:46:50,086 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-15 23:46:50,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:46:50,087 INFO L225 Difference]: With dead ends: 121 [2020-09-15 23:46:50,087 INFO L226 Difference]: Without dead ends: 105 [2020-09-15 23:46:50,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-15 23:46:50,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-15 23:46:50,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-09-15 23:46:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-15 23:46:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 205 transitions. [2020-09-15 23:46:50,091 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 205 transitions. Word has length 19 [2020-09-15 23:46:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:46:50,092 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 205 transitions. [2020-09-15 23:46:50,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-15 23:46:50,092 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 205 transitions. [2020-09-15 23:46:50,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-15 23:46:50,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-15 23:46:50,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-15 23:46:50,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-15 23:46:50,093 INFO L427 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-15 23:46:50,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-15 23:46:50,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1319799301, now seen corresponding path program 2 times [2020-09-15 23:46:50,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-15 23:46:50,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800407853] [2020-09-15 23:46:50,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-15 23:46:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-15 23:46:50,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-15 23:46:50,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800407853] [2020-09-15 23:46:50,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-15 23:46:50,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-15 23:46:50,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1776757964] [2020-09-15 23:46:50,170 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-15 23:46:50,172 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-15 23:46:50,178 INFO L274 McrAutomatonBuilder]: Finished intersection with 37 states and 51 transitions. [2020-09-15 23:46:50,178 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-15 23:46:50,195 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-15 23:46:50,208 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [19136#(<= ~__unbuffered_cnt~0 0)] [2020-09-15 23:46:50,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-15 23:46:50,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-15 23:46:50,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-15 23:46:50,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-15 23:46:50,209 INFO L87 Difference]: Start difference. First operand 103 states and 205 transitions. Second operand 8 states. [2020-09-15 23:46:50,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-15 23:46:50,250 INFO L93 Difference]: Finished difference Result 93 states and 190 transitions. [2020-09-15 23:46:50,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-15 23:46:50,250 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-09-15 23:46:50,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-15 23:46:50,251 INFO L225 Difference]: With dead ends: 93 [2020-09-15 23:46:50,251 INFO L226 Difference]: Without dead ends: 0 [2020-09-15 23:46:50,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-15 23:46:50,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-15 23:46:50,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-15 23:46:50,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-15 23:46:50,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-15 23:46:50,252 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-15 23:46:50,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-15 23:46:50,253 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-15 23:46:50,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-15 23:46:50,253 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-15 23:46:50,253 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-15 23:46:50,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-15 23:46:50,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.09 11:46:50 BasicIcfg [2020-09-15 23:46:50,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-15 23:46:50,260 INFO L168 Benchmark]: Toolchain (without parser) took 6729.79 ms. Allocated memory was 140.5 MB in the beginning and 288.4 MB in the end (delta: 147.8 MB). Free memory was 102.2 MB in the beginning and 194.7 MB in the end (delta: -92.5 MB). Peak memory consumption was 55.4 MB. Max. memory is 7.1 GB. [2020-09-15 23:46:50,261 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-09-15 23:46:50,262 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.22 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 161.1 MB in the end (delta: -59.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-09-15 23:46:50,263 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.86 ms. Allocated memory is still 204.5 MB. Free memory was 161.1 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-15 23:46:50,263 INFO L168 Benchmark]: Boogie Preprocessor took 33.42 ms. Allocated memory is still 204.5 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-15 23:46:50,264 INFO L168 Benchmark]: RCFGBuilder took 481.42 ms. Allocated memory is still 204.5 MB. Free memory was 157.2 MB in the beginning and 133.3 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-09-15 23:46:50,265 INFO L168 Benchmark]: TraceAbstraction took 5374.63 ms. Allocated memory was 204.5 MB in the beginning and 288.4 MB in the end (delta: 83.9 MB). Free memory was 133.3 MB in the beginning and 194.7 MB in the end (delta: -61.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-15 23:46:50,269 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 775.22 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 161.1 MB in the end (delta: -59.7 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 54.86 ms. Allocated memory is still 204.5 MB. Free memory was 161.1 MB in the beginning and 159.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 33.42 ms. Allocated memory is still 204.5 MB. Free memory was 159.2 MB in the beginning and 157.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 481.42 ms. Allocated memory is still 204.5 MB. Free memory was 157.2 MB in the beginning and 133.3 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5374.63 ms. Allocated memory was 204.5 MB in the beginning and 288.4 MB in the end (delta: 83.9 MB). Free memory was 133.3 MB in the beginning and 194.7 MB in the end (delta: -61.3 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 1.5s, 91 ProgramPointsBefore, 39 ProgramPointsAfterwards, 80 TransitionsBefore, 27 TransitionsAfterwards, 1822 CoEnabledTransitionPairs, 6 FixpointIterations, 13 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 927 VarBasedMoverChecksPositive, 22 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2895 CheckedPairsTotal, 62 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 79 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.2s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 353 SDtfs, 265 SDslu, 567 SDs, 0 SdLazy, 203 SolverSat, 41 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 227 GetRequests, 163 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: 0.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 130 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s 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...