/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/safe015_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 23:44:21,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 23:44:21,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 23:44:21,880 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 23:44:21,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 23:44:21,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 23:44:21,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 23:44:21,896 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 23:44:21,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 23:44:21,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 23:44:21,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 23:44:21,904 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 23:44:21,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 23:44:21,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 23:44:21,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 23:44:21,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 23:44:21,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 23:44:21,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 23:44:21,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 23:44:21,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 23:44:21,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 23:44:21,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 23:44:21,925 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 23:44:21,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 23:44:21,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 23:44:21,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 23:44:21,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 23:44:21,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 23:44:21,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 23:44:21,940 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 23:44:21,940 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 23:44:21,941 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 23:44:21,941 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 23:44:21,942 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 23:44:21,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 23:44:21,944 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 23:44:21,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 23:44:21,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 23:44:21,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 23:44:21,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 23:44:21,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 23:44:21,948 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 [2020-09-11 23:44:21,994 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 23:44:21,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 23:44:21,996 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 23:44:21,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 23:44:21,996 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 23:44:21,997 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 23:44:21,997 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 23:44:21,997 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 23:44:21,998 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 23:44:21,998 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 23:44:21,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 23:44:21,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 23:44:21,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 23:44:22,000 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 23:44:22,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 23:44:22,000 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 23:44:22,001 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 23:44:22,001 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 23:44:22,001 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 23:44:22,001 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 23:44:22,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 23:44:22,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 23:44:22,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 23:44:22,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-09-11 23:44:22,002 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 23:44:22,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 23:44:22,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 23:44:22,003 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-09-11 23:44:22,003 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-09-11 23:44:22,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 23:44:22,004 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-09-11 23:44:22,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 23:44:22,470 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 23:44:22,476 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 23:44:22,478 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 23:44:22,479 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 23:44:22,480 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2020-09-11 23:44:22,556 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/957ccde32/cb9919607e824fac802c99d97d336e5e/FLAG09a49f707 [2020-09-11 23:44:23,147 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 23:44:23,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe015_tso.oepc.i [2020-09-11 23:44:23,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/957ccde32/cb9919607e824fac802c99d97d336e5e/FLAG09a49f707 [2020-09-11 23:44:23,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/957ccde32/cb9919607e824fac802c99d97d336e5e [2020-09-11 23:44:23,417 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 23:44:23,422 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 23:44:23,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 23:44:23,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 23:44:23,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 23:44:23,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:44:23" (1/1) ... [2020-09-11 23:44:23,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c53150b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:23, skipping insertion in model container [2020-09-11 23:44:23,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 11:44:23" (1/1) ... [2020-09-11 23:44:23,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 23:44:23,500 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 23:44:24,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:44:24,044 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 23:44:24,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 23:44:24,197 INFO L208 MainTranslator]: Completed translation [2020-09-11 23:44:24,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:24 WrapperNode [2020-09-11 23:44:24,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 23:44:24,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 23:44:24,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 23:44:24,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 23:44:24,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:24" (1/1) ... [2020-09-11 23:44:24,231 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:24" (1/1) ... [2020-09-11 23:44:24,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 23:44:24,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 23:44:24,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 23:44:24,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 23:44:24,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:24" (1/1) ... [2020-09-11 23:44:24,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:24" (1/1) ... [2020-09-11 23:44:24,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:24" (1/1) ... [2020-09-11 23:44:24,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:24" (1/1) ... [2020-09-11 23:44:24,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:24" (1/1) ... [2020-09-11 23:44:24,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:24" (1/1) ... [2020-09-11 23:44:24,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:24" (1/1) ... [2020-09-11 23:44:24,290 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 23:44:24,291 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 23:44:24,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 23:44:24,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 23:44:24,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:24" (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 [2020-09-11 23:44:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 23:44:24,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 23:44:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 23:44:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 23:44:24,377 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 23:44:24,377 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 23:44:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 23:44:24,378 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 23:44:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 23:44:24,378 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 23:44:24,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 23:44:24,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 23:44:24,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 23:44:24,381 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-09-11 23:44:24,777 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 23:44:24,777 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 23:44:24,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:44:24 BoogieIcfgContainer [2020-09-11 23:44:24,783 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 23:44:24,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 23:44:24,785 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 23:44:24,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 23:44:24,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 11:44:23" (1/3) ... [2020-09-11 23:44:24,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62583f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:44:24, skipping insertion in model container [2020-09-11 23:44:24,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 11:44:24" (2/3) ... [2020-09-11 23:44:24,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62583f05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 11:44:24, skipping insertion in model container [2020-09-11 23:44:24,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 11:44:24" (3/3) ... [2020-09-11 23:44:24,793 INFO L109 eAbstractionObserver]: Analyzing ICFG safe015_tso.oepc.i [2020-09-11 23:44:24,803 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 23:44:24,803 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-11 23:44:24,812 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 23:44:24,813 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 23:44:24,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,845 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,846 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,846 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,846 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,847 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,847 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,848 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,848 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,849 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,849 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,850 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,850 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,850 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,851 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,855 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,856 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,856 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,856 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,865 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,865 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,865 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,866 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,869 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,870 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,870 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,870 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 23:44:24,896 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 23:44:24,923 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 23:44:24,924 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 23:44:24,924 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-11 23:44:24,924 INFO L378 AbstractCegarLoop]: Backedges is MCR [2020-09-11 23:44:24,924 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 23:44:24,924 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 23:44:24,925 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 23:44:24,925 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 23:44:24,942 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 69 transitions, 153 flow [2020-09-11 23:44:24,944 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-11 23:44:24,992 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-11 23:44:24,992 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:44:24,998 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:44:25,001 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 77 places, 69 transitions, 153 flow [2020-09-11 23:44:25,026 INFO L129 PetriNetUnfolder]: 2/66 cut-off events. [2020-09-11 23:44:25,027 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 23:44:25,027 INFO L80 FinitePrefix]: Finished finitePrefix Result has 76 conditions, 66 events. 2/66 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 23:44:25,029 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 23:44:25,031 INFO L182 etLargeBlockEncoding]: Variable Check. [2020-09-11 23:44:26,525 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2826 [2020-09-11 23:44:26,525 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-11 23:44:26,530 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 23:44:26,560 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 23:44:26,563 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 23:44:26,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 23:44:26,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:26,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:26,575 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:26,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:26,582 INFO L82 PathProgramCache]: Analyzing trace with hash -2122060928, now seen corresponding path program 1 times [2020-09-11 23:44:26,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:26,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455630105] [2020-09-11 23:44:26,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:26,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:26,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455630105] [2020-09-11 23:44:26,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:26,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:44:26,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [193770022] [2020-09-11 23:44:26,874 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:26,879 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:26,902 INFO L274 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-09-11 23:44:26,902 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:26,919 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:26,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:44:26,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:26,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:44:26,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:44:26,953 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 23:44:27,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:27,015 INFO L93 Difference]: Finished difference Result 282 states and 808 transitions. [2020-09-11 23:44:27,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:44:27,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 23:44:27,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:27,035 INFO L225 Difference]: With dead ends: 282 [2020-09-11 23:44:27,035 INFO L226 Difference]: Without dead ends: 218 [2020-09-11 23:44:27,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:44:27,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-09-11 23:44:27,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-09-11 23:44:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-11 23:44:27,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 600 transitions. [2020-09-11 23:44:27,120 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 600 transitions. Word has length 8 [2020-09-11 23:44:27,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:27,121 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 600 transitions. [2020-09-11 23:44:27,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:44:27,122 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 600 transitions. [2020-09-11 23:44:27,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-09-11 23:44:27,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:27,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:27,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 23:44:27,124 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:27,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:27,125 INFO L82 PathProgramCache]: Analyzing trace with hash -1372085576, now seen corresponding path program 1 times [2020-09-11 23:44:27,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:27,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252688479] [2020-09-11 23:44:27,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:27,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252688479] [2020-09-11 23:44:27,228 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:27,228 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:44:27,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1436501573] [2020-09-11 23:44:27,228 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:27,229 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:27,232 INFO L274 McrAutomatonBuilder]: Finished intersection with 13 states and 15 transitions. [2020-09-11 23:44:27,232 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:27,255 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:27,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:44:27,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:27,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:44:27,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:44:27,258 INFO L87 Difference]: Start difference. First operand 218 states and 600 transitions. Second operand 3 states. [2020-09-11 23:44:27,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:27,279 INFO L93 Difference]: Finished difference Result 202 states and 544 transitions. [2020-09-11 23:44:27,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:44:27,280 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-09-11 23:44:27,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:27,283 INFO L225 Difference]: With dead ends: 202 [2020-09-11 23:44:27,283 INFO L226 Difference]: Without dead ends: 202 [2020-09-11 23:44:27,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:44:27,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-11 23:44:27,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-11 23:44:27,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-11 23:44:27,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-11 23:44:27,308 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 9 [2020-09-11 23:44:27,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:27,308 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-11 23:44:27,309 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:44:27,309 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-11 23:44:27,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 23:44:27,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:27,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:27,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 23:44:27,311 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:27,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:27,312 INFO L82 PathProgramCache]: Analyzing trace with hash 365373016, now seen corresponding path program 1 times [2020-09-11 23:44:27,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:27,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287643257] [2020-09-11 23:44:27,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:27,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:27,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287643257] [2020-09-11 23:44:27,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:27,391 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:44:27,391 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [213615528] [2020-09-11 23:44:27,391 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:27,393 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:27,396 INFO L274 McrAutomatonBuilder]: Finished intersection with 17 states and 22 transitions. [2020-09-11 23:44:27,396 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:27,434 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:27,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:44:27,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:27,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:44:27,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:44:27,436 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-09-11 23:44:27,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:27,445 INFO L93 Difference]: Finished difference Result 198 states and 530 transitions. [2020-09-11 23:44:27,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:44:27,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-09-11 23:44:27,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:27,449 INFO L225 Difference]: With dead ends: 198 [2020-09-11 23:44:27,449 INFO L226 Difference]: Without dead ends: 198 [2020-09-11 23:44:27,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:44:27,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-09-11 23:44:27,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2020-09-11 23:44:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-09-11 23:44:27,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 530 transitions. [2020-09-11 23:44:27,466 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 530 transitions. Word has length 10 [2020-09-11 23:44:27,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:27,466 INFO L479 AbstractCegarLoop]: Abstraction has 198 states and 530 transitions. [2020-09-11 23:44:27,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:44:27,466 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 530 transitions. [2020-09-11 23:44:27,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 23:44:27,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:27,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:27,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 23:44:27,469 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:27,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:27,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1571968161, now seen corresponding path program 1 times [2020-09-11 23:44:27,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:27,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325099678] [2020-09-11 23:44:27,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:27,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:27,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:27,530 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325099678] [2020-09-11 23:44:27,530 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:27,530 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 23:44:27,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1928233588] [2020-09-11 23:44:27,531 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:27,532 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:27,535 INFO L274 McrAutomatonBuilder]: Finished intersection with 31 states and 55 transitions. [2020-09-11 23:44:27,535 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:27,678 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:27,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:44:27,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:27,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:44:27,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:44:27,679 INFO L87 Difference]: Start difference. First operand 198 states and 530 transitions. Second operand 3 states. [2020-09-11 23:44:27,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:27,686 INFO L93 Difference]: Finished difference Result 192 states and 511 transitions. [2020-09-11 23:44:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:44:27,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-11 23:44:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:27,689 INFO L225 Difference]: With dead ends: 192 [2020-09-11 23:44:27,689 INFO L226 Difference]: Without dead ends: 192 [2020-09-11 23:44:27,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:44:27,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-09-11 23:44:27,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2020-09-11 23:44:27,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-09-11 23:44:27,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 511 transitions. [2020-09-11 23:44:27,702 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 511 transitions. Word has length 11 [2020-09-11 23:44:27,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:27,702 INFO L479 AbstractCegarLoop]: Abstraction has 192 states and 511 transitions. [2020-09-11 23:44:27,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:44:27,703 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 511 transitions. [2020-09-11 23:44:27,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 23:44:27,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:27,705 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:27,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 23:44:27,705 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:27,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:27,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1486373385, now seen corresponding path program 1 times [2020-09-11 23:44:27,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:27,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052490215] [2020-09-11 23:44:27,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:27,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:27,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:27,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052490215] [2020-09-11 23:44:27,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:27,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:44:27,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1511346728] [2020-09-11 23:44:27,778 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:27,779 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:27,784 INFO L274 McrAutomatonBuilder]: Finished intersection with 35 states and 63 transitions. [2020-09-11 23:44:27,784 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:27,810 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:27,858 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:27,904 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:27,943 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:27,964 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:27,981 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:28,001 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:28,043 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:28,057 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [3186#(not (= 3 ~__unbuffered_cnt~0))] [2020-09-11 23:44:28,057 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 23:44:28,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:28,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 23:44:28,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:28,058 INFO L87 Difference]: Start difference. First operand 192 states and 511 transitions. Second operand 5 states. [2020-09-11 23:44:28,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:28,122 INFO L93 Difference]: Finished difference Result 187 states and 470 transitions. [2020-09-11 23:44:28,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:44:28,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-11 23:44:28,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:28,124 INFO L225 Difference]: With dead ends: 187 [2020-09-11 23:44:28,124 INFO L226 Difference]: Without dead ends: 123 [2020-09-11 23:44:28,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 25 SyntacticMatches, 6 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-11 23:44:28,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-11 23:44:28,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2020-09-11 23:44:28,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-11 23:44:28,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 272 transitions. [2020-09-11 23:44:28,131 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 272 transitions. Word has length 12 [2020-09-11 23:44:28,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:28,131 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 272 transitions. [2020-09-11 23:44:28,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 23:44:28,131 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 272 transitions. [2020-09-11 23:44:28,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 23:44:28,132 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:28,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:28,133 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 23:44:28,133 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:28,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:28,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1920279248, now seen corresponding path program 1 times [2020-09-11 23:44:28,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:28,134 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371969616] [2020-09-11 23:44:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:28,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:28,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:28,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371969616] [2020-09-11 23:44:28,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:28,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:44:28,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [127185424] [2020-09-11 23:44:28,182 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:28,184 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:28,186 INFO L274 McrAutomatonBuilder]: Finished intersection with 23 states and 30 transitions. [2020-09-11 23:44:28,187 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:28,190 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:28,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 23:44:28,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:28,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 23:44:28,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:44:28,191 INFO L87 Difference]: Start difference. First operand 123 states and 272 transitions. Second operand 3 states. [2020-09-11 23:44:28,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:28,200 INFO L93 Difference]: Finished difference Result 155 states and 330 transitions. [2020-09-11 23:44:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 23:44:28,200 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-09-11 23:44:28,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:28,202 INFO L225 Difference]: With dead ends: 155 [2020-09-11 23:44:28,202 INFO L226 Difference]: Without dead ends: 124 [2020-09-11 23:44:28,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 23:44:28,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-11 23:44:28,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-09-11 23:44:28,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-11 23:44:28,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 257 transitions. [2020-09-11 23:44:28,207 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 257 transitions. Word has length 14 [2020-09-11 23:44:28,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:28,207 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 257 transitions. [2020-09-11 23:44:28,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 23:44:28,208 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 257 transitions. [2020-09-11 23:44:28,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:44:28,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:28,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:28,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 23:44:28,209 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:28,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:28,210 INFO L82 PathProgramCache]: Analyzing trace with hash 451653261, now seen corresponding path program 1 times [2020-09-11 23:44:28,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:28,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20586989] [2020-09-11 23:44:28,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:28,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:28,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20586989] [2020-09-11 23:44:28,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:28,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:44:28,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [820327188] [2020-09-11 23:44:28,294 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:28,296 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:28,302 INFO L274 McrAutomatonBuilder]: Finished intersection with 49 states and 91 transitions. [2020-09-11 23:44:28,302 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:28,533 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:28,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:44:28,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:28,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:44:28,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:44:28,534 INFO L87 Difference]: Start difference. First operand 122 states and 257 transitions. Second operand 4 states. [2020-09-11 23:44:28,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:28,567 INFO L93 Difference]: Finished difference Result 154 states and 308 transitions. [2020-09-11 23:44:28,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:44:28,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-09-11 23:44:28,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:28,569 INFO L225 Difference]: With dead ends: 154 [2020-09-11 23:44:28,569 INFO L226 Difference]: Without dead ends: 116 [2020-09-11 23:44:28,569 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:28,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-11 23:44:28,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2020-09-11 23:44:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-09-11 23:44:28,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 222 transitions. [2020-09-11 23:44:28,576 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 222 transitions. Word has length 15 [2020-09-11 23:44:28,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:28,577 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 222 transitions. [2020-09-11 23:44:28,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:44:28,577 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 222 transitions. [2020-09-11 23:44:28,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 23:44:28,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:28,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:28,578 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 23:44:28,579 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:28,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:28,581 INFO L82 PathProgramCache]: Analyzing trace with hash -600886075, now seen corresponding path program 1 times [2020-09-11 23:44:28,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:28,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439097138] [2020-09-11 23:44:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:28,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:28,655 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439097138] [2020-09-11 23:44:28,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:28,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 23:44:28,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [434759227] [2020-09-11 23:44:28,656 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:28,657 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:28,661 INFO L274 McrAutomatonBuilder]: Finished intersection with 43 states and 75 transitions. [2020-09-11 23:44:28,662 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:28,667 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-09-11 23:44:28,770 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 4 new interpolants: [4421#(not (= 3 ~__unbuffered_cnt~0)), 4422#(not (= ~__unbuffered_cnt~0 2)), 4423#(not (= ~__unbuffered_cnt~0 1)), 4424#(<= ~__unbuffered_cnt~0 0)] [2020-09-11 23:44:28,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-11 23:44:28,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:28,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-11 23:44:28,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-11 23:44:28,772 INFO L87 Difference]: Start difference. First operand 114 states and 222 transitions. Second operand 10 states. [2020-09-11 23:44:28,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:28,837 INFO L93 Difference]: Finished difference Result 110 states and 212 transitions. [2020-09-11 23:44:28,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 23:44:28,837 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-09-11 23:44:28,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:28,838 INFO L225 Difference]: With dead ends: 110 [2020-09-11 23:44:28,838 INFO L226 Difference]: Without dead ends: 38 [2020-09-11 23:44:28,839 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-11 23:44:28,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-11 23:44:28,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-11 23:44:28,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-11 23:44:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 62 transitions. [2020-09-11 23:44:28,841 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 62 transitions. Word has length 15 [2020-09-11 23:44:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:28,841 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 62 transitions. [2020-09-11 23:44:28,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-11 23:44:28,841 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 62 transitions. [2020-09-11 23:44:28,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:44:28,842 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:28,842 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:28,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 23:44:28,843 INFO L427 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:28,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:28,843 INFO L82 PathProgramCache]: Analyzing trace with hash 13395029, now seen corresponding path program 1 times [2020-09-11 23:44:28,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:28,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519381784] [2020-09-11 23:44:28,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:28,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:28,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519381784] [2020-09-11 23:44:28,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:28,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 23:44:28,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [360205594] [2020-09-11 23:44:28,898 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:28,900 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:28,909 INFO L274 McrAutomatonBuilder]: Finished intersection with 37 states and 54 transitions. [2020-09-11 23:44:28,909 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:28,921 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:28,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:44:28,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:28,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:44:28,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:44:28,922 INFO L87 Difference]: Start difference. First operand 38 states and 62 transitions. Second operand 4 states. [2020-09-11 23:44:28,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:28,942 INFO L93 Difference]: Finished difference Result 56 states and 90 transitions. [2020-09-11 23:44:28,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 23:44:28,943 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:44:28,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:28,943 INFO L225 Difference]: With dead ends: 56 [2020-09-11 23:44:28,944 INFO L226 Difference]: Without dead ends: 35 [2020-09-11 23:44:28,944 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:28,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-09-11 23:44:28,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-09-11 23:44:28,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-11 23:44:28,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 56 transitions. [2020-09-11 23:44:28,946 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 56 transitions. Word has length 17 [2020-09-11 23:44:28,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:28,947 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 56 transitions. [2020-09-11 23:44:28,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:44:28,947 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 56 transitions. [2020-09-11 23:44:28,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 23:44:28,948 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 23:44:28,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 23:44:28,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-11 23:44:28,948 INFO L427 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 23:44:28,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 23:44:28,949 INFO L82 PathProgramCache]: Analyzing trace with hash 265740449, now seen corresponding path program 2 times [2020-09-11 23:44:28,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 23:44:28,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855183691] [2020-09-11 23:44:28,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 23:44:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 23:44:29,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-11 23:44:29,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855183691] [2020-09-11 23:44:29,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 23:44:29,013 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 23:44:29,013 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [543968196] [2020-09-11 23:44:29,013 INFO L216 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-09-11 23:44:29,015 INFO L271 McrAutomatonBuilder]: Started intersection. [2020-09-11 23:44:29,024 INFO L274 McrAutomatonBuilder]: Finished intersection with 34 states and 47 transitions. [2020-09-11 23:44:29,025 INFO L299 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton. [2020-09-11 23:44:29,047 INFO L399 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-09-11 23:44:29,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 23:44:29,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 23:44:29,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 23:44:29,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 23:44:29,049 INFO L87 Difference]: Start difference. First operand 35 states and 56 transitions. Second operand 4 states. [2020-09-11 23:44:29,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 23:44:29,070 INFO L93 Difference]: Finished difference Result 34 states and 55 transitions. [2020-09-11 23:44:29,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 23:44:29,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 23:44:29,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 23:44:29,071 INFO L225 Difference]: With dead ends: 34 [2020-09-11 23:44:29,071 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 23:44:29,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-11 23:44:29,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 23:44:29,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 23:44:29,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 23:44:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 23:44:29,072 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 23:44:29,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 23:44:29,073 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 23:44:29,073 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 23:44:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 23:44:29,073 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 23:44:29,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-11 23:44:29,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 11:44:29 BasicIcfg [2020-09-11 23:44:29,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 23:44:29,082 INFO L168 Benchmark]: Toolchain (without parser) took 5661.26 ms. Allocated memory was 140.5 MB in the beginning and 282.6 MB in the end (delta: 142.1 MB). Free memory was 100.6 MB in the beginning and 190.8 MB in the end (delta: -90.2 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. [2020-09-11 23:44:29,083 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 23:44:29,084 INFO L168 Benchmark]: CACSL2BoogieTranslator took 775.27 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.1 MB in the beginning and 161.2 MB in the end (delta: -61.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-11 23:44:29,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.25 ms. Allocated memory is still 204.5 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-09-11 23:44:29,085 INFO L168 Benchmark]: Boogie Preprocessor took 30.98 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 23:44:29,086 INFO L168 Benchmark]: RCFGBuilder took 492.17 ms. Allocated memory is still 204.5 MB. Free memory was 158.0 MB in the beginning and 135.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-09-11 23:44:29,087 INFO L168 Benchmark]: TraceAbstraction took 4293.88 ms. Allocated memory was 204.5 MB in the beginning and 282.6 MB in the end (delta: 78.1 MB). Free memory was 135.2 MB in the beginning and 190.8 MB in the end (delta: -55.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-11 23:44:29,091 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 775.27 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.1 MB in the beginning and 161.2 MB in the end (delta: -61.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 60.25 ms. Allocated memory is still 204.5 MB. Free memory was 161.2 MB in the beginning and 159.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.98 ms. Allocated memory is still 204.5 MB. Free memory was 159.3 MB in the beginning and 158.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 492.17 ms. Allocated memory is still 204.5 MB. Free memory was 158.0 MB in the beginning and 135.9 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4293.88 ms. Allocated memory was 204.5 MB in the beginning and 282.6 MB in the end (delta: 78.1 MB). Free memory was 135.2 MB in the beginning and 190.8 MB in the end (delta: -55.5 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, 77 ProgramPointsBefore, 31 ProgramPointsAfterwards, 69 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 13 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 655 VarBasedMoverChecksPositive, 29 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 0 MoverChecksTotal, 2826 CheckedPairsTotal, 58 TotalNumberOfCompositions - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 68 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 10, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 196 SDtfs, 125 SDslu, 232 SDs, 0 SdLazy, 133 SolverSat, 23 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 296 GetRequests, 262 SyntacticMatches, 6 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=298occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 118 ConstructedInterpolants, 0 QuantifiedInterpolants, 3872 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...