/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-507b705 [2020-09-11 15:09:40,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-11 15:09:40,948 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-11 15:09:40,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-11 15:09:40,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-11 15:09:40,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-11 15:09:41,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-11 15:09:41,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-11 15:09:41,008 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-11 15:09:41,011 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-11 15:09:41,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-11 15:09:41,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-11 15:09:41,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-11 15:09:41,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-11 15:09:41,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-11 15:09:41,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-11 15:09:41,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-11 15:09:41,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-11 15:09:41,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-11 15:09:41,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-11 15:09:41,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-11 15:09:41,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-11 15:09:41,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-11 15:09:41,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-11 15:09:41,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-11 15:09:41,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-11 15:09:41,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-11 15:09:41,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-11 15:09:41,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-11 15:09:41,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-11 15:09:41,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-11 15:09:41,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-11 15:09:41,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-11 15:09:41,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-11 15:09:41,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-11 15:09:41,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-11 15:09:41,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-11 15:09:41,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-11 15:09:41,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-11 15:09:41,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-11 15:09:41,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-11 15:09:41,073 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-11 15:09:41,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-11 15:09:41,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-11 15:09:41,120 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-11 15:09:41,120 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-11 15:09:41,121 INFO L138 SettingsManager]: * Use SBE=true [2020-09-11 15:09:41,121 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-11 15:09:41,121 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-11 15:09:41,121 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-11 15:09:41,121 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-11 15:09:41,122 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-11 15:09:41,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-11 15:09:41,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-11 15:09:41,123 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-11 15:09:41,124 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-11 15:09:41,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-11 15:09:41,124 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-11 15:09:41,124 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-11 15:09:41,125 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-11 15:09:41,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-11 15:09:41,125 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-11 15:09:41,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-11 15:09:41,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-11 15:09:41,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-11 15:09:41,126 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-11 15:09:41,126 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-11 15:09:41,126 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-11 15:09:41,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-11 15:09:41,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-11 15:09:41,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-11 15:09:41,127 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-11 15:09:41,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-11 15:09:41,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-11 15:09:41,622 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-11 15:09:41,624 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-11 15:09:41,624 INFO L275 PluginConnector]: CDTParser initialized [2020-09-11 15:09:41,626 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-09-11 15:09:41,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00cd8de17/7936c4de9fd7456cbb0e45c818f2e62e/FLAG876bb9fa2 [2020-09-11 15:09:42,367 INFO L306 CDTParser]: Found 1 translation units. [2020-09-11 15:09:42,368 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe005_tso.oepc.i [2020-09-11 15:09:42,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00cd8de17/7936c4de9fd7456cbb0e45c818f2e62e/FLAG876bb9fa2 [2020-09-11 15:09:42,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/00cd8de17/7936c4de9fd7456cbb0e45c818f2e62e [2020-09-11 15:09:42,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-11 15:09:42,608 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-09-11 15:09:42,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-11 15:09:42,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-11 15:09:42,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-11 15:09:42,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:09:42" (1/1) ... [2020-09-11 15:09:42,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ceedc44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:09:42, skipping insertion in model container [2020-09-11 15:09:42,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.09 03:09:42" (1/1) ... [2020-09-11 15:09:42,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-11 15:09:42,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-11 15:09:43,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:09:43,232 INFO L203 MainTranslator]: Completed pre-run [2020-09-11 15:09:43,298 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-11 15:09:43,373 INFO L208 MainTranslator]: Completed translation [2020-09-11 15:09:43,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:09:43 WrapperNode [2020-09-11 15:09:43,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-11 15:09:43,375 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-09-11 15:09:43,375 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-09-11 15:09:43,375 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-09-11 15:09:43,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:09:43" (1/1) ... [2020-09-11 15:09:43,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:09:43" (1/1) ... [2020-09-11 15:09:43,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-09-11 15:09:43,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-11 15:09:43,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-11 15:09:43,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-11 15:09:43,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:09:43" (1/1) ... [2020-09-11 15:09:43,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:09:43" (1/1) ... [2020-09-11 15:09:43,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:09:43" (1/1) ... [2020-09-11 15:09:43,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:09:43" (1/1) ... [2020-09-11 15:09:43,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:09:43" (1/1) ... [2020-09-11 15:09:43,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:09:43" (1/1) ... [2020-09-11 15:09:43,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:09:43" (1/1) ... [2020-09-11 15:09:43,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-11 15:09:43,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-11 15:09:43,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-11 15:09:43,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-11 15:09:43,469 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:09:43" (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 15:09:43,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-11 15:09:43,557 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-09-11 15:09:43,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-11 15:09:43,557 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-11 15:09:43,557 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-09-11 15:09:43,558 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-09-11 15:09:43,558 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-09-11 15:09:43,558 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-09-11 15:09:43,558 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-09-11 15:09:43,558 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-09-11 15:09:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-09-11 15:09:43,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-11 15:09:43,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-11 15:09:43,562 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 15:09:43,998 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-11 15:09:43,999 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-11 15:09:44,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:09:44 BoogieIcfgContainer [2020-09-11 15:09:44,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-11 15:09:44,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-11 15:09:44,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-11 15:09:44,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-11 15:09:44,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.09 03:09:42" (1/3) ... [2020-09-11 15:09:44,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51feca94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:09:44, skipping insertion in model container [2020-09-11 15:09:44,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.09 03:09:43" (2/3) ... [2020-09-11 15:09:44,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51feca94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.09 03:09:44, skipping insertion in model container [2020-09-11 15:09:44,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.09 03:09:44" (3/3) ... [2020-09-11 15:09:44,014 INFO L109 eAbstractionObserver]: Analyzing ICFG safe005_tso.oepc.i [2020-09-11 15:09:44,025 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-09-11 15:09:44,026 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-11 15:09:44,035 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-11 15:09:44,036 INFO L340 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-09-11 15:09:44,063 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,063 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,064 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,064 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,064 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,065 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,066 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,066 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,066 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,067 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,067 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,067 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,068 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,068 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,073 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,074 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,074 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,074 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,085 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,085 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,085 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,086 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,089 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,090 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,090 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-09-11 15:09:44,115 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-09-11 15:09:44,143 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-11 15:09:44,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-11 15:09:44,143 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-11 15:09:44,143 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-11 15:09:44,143 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-11 15:09:44,144 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-11 15:09:44,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-11 15:09:44,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-11 15:09:44,162 INFO L152 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-09-11 15:09:44,164 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 15:09:44,211 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 15:09:44,211 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:09:44,217 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 15:09:44,220 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-09-11 15:09:44,241 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-09-11 15:09:44,241 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-09-11 15:09:44,242 INFO L80 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 67 events. 2/67 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 51 event pairs, 0 based on Foata normal form. 0/64 useless extension candidates. Maximal degree in co-relation 55. Up to 2 conditions per place. [2020-09-11 15:09:44,244 INFO L158 etLargeBlockEncoding]: Number of co-enabled transitions 1260 [2020-09-11 15:09:44,246 INFO L170 etLargeBlockEncoding]: Semantic Check. [2020-09-11 15:09:45,993 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-09-11 15:09:46,175 INFO L206 etLargeBlockEncoding]: Checked pairs total: 2768 [2020-09-11 15:09:46,175 INFO L214 etLargeBlockEncoding]: Total number of compositions: 58 [2020-09-11 15:09:46,180 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 22 transitions, 59 flow [2020-09-11 15:09:46,208 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-09-11 15:09:46,211 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-09-11 15:09:46,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-09-11 15:09:46,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:09:46,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:09:46,223 INFO L427 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:09:46,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:09:46,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1655297948, now seen corresponding path program 1 times [2020-09-11 15:09:46,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:09:46,242 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419969612] [2020-09-11 15:09:46,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:09:46,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:09:46,482 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 15:09:46,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419969612] [2020-09-11 15:09:46,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:09:46,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-09-11 15:09:46,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568696457] [2020-09-11 15:09:46,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:09:46,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:09:46,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:09:46,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:09:46,511 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-09-11 15:09:46,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:09:46,570 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-09-11 15:09:46,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:09:46,575 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-09-11 15:09:46,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:09:46,593 INFO L225 Difference]: With dead ends: 266 [2020-09-11 15:09:46,594 INFO L226 Difference]: Without dead ends: 202 [2020-09-11 15:09:46,595 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 15:09:46,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-11 15:09:46,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-09-11 15:09:46,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-09-11 15:09:46,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-09-11 15:09:46,662 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-09-11 15:09:46,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:09:46,664 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-09-11 15:09:46,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:09:46,664 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-09-11 15:09:46,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-09-11 15:09:46,666 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:09:46,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:09:46,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-11 15:09:46,667 INFO L427 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:09:46,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:09:46,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1603389483, now seen corresponding path program 1 times [2020-09-11 15:09:46,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:09:46,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628142642] [2020-09-11 15:09:46,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:09:46,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:09:46,786 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 15:09:46,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628142642] [2020-09-11 15:09:46,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:09:46,788 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:09:46,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068195226] [2020-09-11 15:09:46,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:09:46,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:09:46,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:09:46,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:09:46,792 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 4 states. [2020-09-11 15:09:46,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:09:46,847 INFO L93 Difference]: Finished difference Result 254 states and 666 transitions. [2020-09-11 15:09:46,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:09:46,850 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-09-11 15:09:46,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:09:46,853 INFO L225 Difference]: With dead ends: 254 [2020-09-11 15:09:46,853 INFO L226 Difference]: Without dead ends: 190 [2020-09-11 15:09:46,857 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 [2020-09-11 15:09:46,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-09-11 15:09:46,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 190. [2020-09-11 15:09:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-09-11 15:09:46,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 502 transitions. [2020-09-11 15:09:46,891 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 502 transitions. Word has length 10 [2020-09-11 15:09:46,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:09:46,892 INFO L479 AbstractCegarLoop]: Abstraction has 190 states and 502 transitions. [2020-09-11 15:09:46,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:09:46,892 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 502 transitions. [2020-09-11 15:09:46,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-11 15:09:46,895 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:09:46,895 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:09:46,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-11 15:09:46,896 INFO L427 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:09:46,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:09:46,896 INFO L82 PathProgramCache]: Analyzing trace with hash -1533986257, now seen corresponding path program 1 times [2020-09-11 15:09:46,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:09:46,897 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062210833] [2020-09-11 15:09:46,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:09:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:09:47,018 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 15:09:47,018 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062210833] [2020-09-11 15:09:47,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:09:47,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:09:47,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305379181] [2020-09-11 15:09:47,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:09:47,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:09:47,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:09:47,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:09:47,021 INFO L87 Difference]: Start difference. First operand 190 states and 502 transitions. Second operand 4 states. [2020-09-11 15:09:47,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:09:47,058 INFO L93 Difference]: Finished difference Result 286 states and 722 transitions. [2020-09-11 15:09:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:09:47,058 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-09-11 15:09:47,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:09:47,061 INFO L225 Difference]: With dead ends: 286 [2020-09-11 15:09:47,061 INFO L226 Difference]: Without dead ends: 178 [2020-09-11 15:09:47,061 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 [2020-09-11 15:09:47,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-11 15:09:47,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 154. [2020-09-11 15:09:47,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-09-11 15:09:47,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 376 transitions. [2020-09-11 15:09:47,074 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 376 transitions. Word has length 11 [2020-09-11 15:09:47,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:09:47,074 INFO L479 AbstractCegarLoop]: Abstraction has 154 states and 376 transitions. [2020-09-11 15:09:47,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:09:47,075 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 376 transitions. [2020-09-11 15:09:47,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-11 15:09:47,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:09:47,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:09:47,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-11 15:09:47,077 INFO L427 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:09:47,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:09:47,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1026948662, now seen corresponding path program 1 times [2020-09-11 15:09:47,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:09:47,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966532605] [2020-09-11 15:09:47,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:09:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:09:47,124 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 15:09:47,124 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966532605] [2020-09-11 15:09:47,125 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:09:47,125 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:09:47,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187164649] [2020-09-11 15:09:47,126 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-11 15:09:47,126 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:09:47,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-11 15:09:47,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-11 15:09:47,127 INFO L87 Difference]: Start difference. First operand 154 states and 376 transitions. Second operand 3 states. [2020-09-11 15:09:47,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:09:47,148 INFO L93 Difference]: Finished difference Result 174 states and 416 transitions. [2020-09-11 15:09:47,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-11 15:09:47,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-11 15:09:47,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:09:47,150 INFO L225 Difference]: With dead ends: 174 [2020-09-11 15:09:47,150 INFO L226 Difference]: Without dead ends: 72 [2020-09-11 15:09:47,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 15:09:47,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-11 15:09:47,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-11 15:09:47,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-11 15:09:47,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 154 transitions. [2020-09-11 15:09:47,156 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 154 transitions. Word has length 12 [2020-09-11 15:09:47,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:09:47,157 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 154 transitions. [2020-09-11 15:09:47,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-11 15:09:47,157 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 154 transitions. [2020-09-11 15:09:47,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-11 15:09:47,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:09:47,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:09:47,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-11 15:09:47,158 INFO L427 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:09:47,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:09:47,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1770638686, now seen corresponding path program 1 times [2020-09-11 15:09:47,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:09:47,159 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038803641] [2020-09-11 15:09:47,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:09:47,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:09:47,242 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 15:09:47,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038803641] [2020-09-11 15:09:47,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:09:47,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-11 15:09:47,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812318638] [2020-09-11 15:09:47,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:09:47,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:09:47,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:09:47,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:09:47,245 INFO L87 Difference]: Start difference. First operand 72 states and 154 transitions. Second operand 4 states. [2020-09-11 15:09:47,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:09:47,279 INFO L93 Difference]: Finished difference Result 85 states and 167 transitions. [2020-09-11 15:09:47,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-11 15:09:47,279 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-09-11 15:09:47,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:09:47,280 INFO L225 Difference]: With dead ends: 85 [2020-09-11 15:09:47,281 INFO L226 Difference]: Without dead ends: 61 [2020-09-11 15:09:47,281 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 [2020-09-11 15:09:47,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-11 15:09:47,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-11 15:09:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-11 15:09:47,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 118 transitions. [2020-09-11 15:09:47,285 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 118 transitions. Word has length 13 [2020-09-11 15:09:47,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:09:47,286 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 118 transitions. [2020-09-11 15:09:47,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:09:47,286 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 118 transitions. [2020-09-11 15:09:47,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-11 15:09:47,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:09:47,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:09:47,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-11 15:09:47,288 INFO L427 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:09:47,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:09:47,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1873051802, now seen corresponding path program 1 times [2020-09-11 15:09:47,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:09:47,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169468582] [2020-09-11 15:09:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:09:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:09:47,365 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 15:09:47,365 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169468582] [2020-09-11 15:09:47,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:09:47,366 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:09:47,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347505884] [2020-09-11 15:09:47,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-11 15:09:47,366 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:09:47,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-11 15:09:47,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-11 15:09:47,367 INFO L87 Difference]: Start difference. First operand 61 states and 118 transitions. Second operand 5 states. [2020-09-11 15:09:47,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:09:47,405 INFO L93 Difference]: Finished difference Result 62 states and 108 transitions. [2020-09-11 15:09:47,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-11 15:09:47,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-11 15:09:47,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:09:47,406 INFO L225 Difference]: With dead ends: 62 [2020-09-11 15:09:47,406 INFO L226 Difference]: Without dead ends: 47 [2020-09-11 15:09:47,407 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:09:47,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-11 15:09:47,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-09-11 15:09:47,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-09-11 15:09:47,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 78 transitions. [2020-09-11 15:09:47,409 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 78 transitions. Word has length 14 [2020-09-11 15:09:47,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:09:47,410 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 78 transitions. [2020-09-11 15:09:47,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-11 15:09:47,410 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 78 transitions. [2020-09-11 15:09:47,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-11 15:09:47,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:09:47,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-11 15:09:47,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-11 15:09:47,411 INFO L427 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:09:47,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:09:47,412 INFO L82 PathProgramCache]: Analyzing trace with hash 877737129, now seen corresponding path program 1 times [2020-09-11 15:09:47,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:09:47,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259757055] [2020-09-11 15:09:47,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:09:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:09:47,484 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 15:09:47,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259757055] [2020-09-11 15:09:47,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:09:47,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-11 15:09:47,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007164140] [2020-09-11 15:09:47,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-11 15:09:47,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:09:47,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-11 15:09:47,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-11 15:09:47,486 INFO L87 Difference]: Start difference. First operand 47 states and 78 transitions. Second operand 6 states. [2020-09-11 15:09:47,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:09:47,540 INFO L93 Difference]: Finished difference Result 44 states and 70 transitions. [2020-09-11 15:09:47,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-11 15:09:47,541 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-11 15:09:47,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:09:47,542 INFO L225 Difference]: With dead ends: 44 [2020-09-11 15:09:47,542 INFO L226 Difference]: Without dead ends: 38 [2020-09-11 15:09:47,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-11 15:09:47,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-11 15:09:47,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-11 15:09:47,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-11 15:09:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 60 transitions. [2020-09-11 15:09:47,545 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 60 transitions. Word has length 15 [2020-09-11 15:09:47,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:09:47,546 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 60 transitions. [2020-09-11 15:09:47,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-11 15:09:47,546 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 60 transitions. [2020-09-11 15:09:47,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-11 15:09:47,547 INFO L414 BasicCegarLoop]: Found error trace [2020-09-11 15:09:47,547 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 15:09:47,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-11 15:09:47,548 INFO L427 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-11 15:09:47,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-11 15:09:47,548 INFO L82 PathProgramCache]: Analyzing trace with hash 1637147722, now seen corresponding path program 1 times [2020-09-11 15:09:47,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-11 15:09:47,549 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49639276] [2020-09-11 15:09:47,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-11 15:09:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-11 15:09:47,609 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 15:09:47,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49639276] [2020-09-11 15:09:47,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-11 15:09:47,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-11 15:09:47,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100713488] [2020-09-11 15:09:47,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-11 15:09:47,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-11 15:09:47,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-11 15:09:47,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-11 15:09:47,612 INFO L87 Difference]: Start difference. First operand 38 states and 60 transitions. Second operand 4 states. [2020-09-11 15:09:47,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-11 15:09:47,622 INFO L93 Difference]: Finished difference Result 37 states and 59 transitions. [2020-09-11 15:09:47,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-11 15:09:47,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-09-11 15:09:47,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-11 15:09:47,623 INFO L225 Difference]: With dead ends: 37 [2020-09-11 15:09:47,623 INFO L226 Difference]: Without dead ends: 0 [2020-09-11 15:09:47,624 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 [2020-09-11 15:09:47,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-11 15:09:47,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-11 15:09:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-11 15:09:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-11 15:09:47,625 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-09-11 15:09:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-11 15:09:47,625 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-11 15:09:47,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-11 15:09:47,625 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-11 15:09:47,626 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-11 15:09:47,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-11 15:09:47,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.09 03:09:47 BasicIcfg [2020-09-11 15:09:47,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-11 15:09:47,633 INFO L168 Benchmark]: Toolchain (without parser) took 5029.94 ms. Allocated memory was 138.9 MB in the beginning and 249.6 MB in the end (delta: 110.6 MB). Free memory was 100.7 MB in the beginning and 164.6 MB in the end (delta: -63.9 MB). Peak memory consumption was 46.8 MB. Max. memory is 7.1 GB. [2020-09-11 15:09:47,634 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-11 15:09:47,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.78 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.1 MB in the beginning and 160.2 MB in the end (delta: -60.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2020-09-11 15:09:47,636 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.20 ms. Allocated memory is still 202.4 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-09-11 15:09:47,637 INFO L168 Benchmark]: Boogie Preprocessor took 31.86 ms. Allocated memory is still 202.4 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:09:47,637 INFO L168 Benchmark]: RCFGBuilder took 538.82 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 134.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-09-11 15:09:47,638 INFO L168 Benchmark]: TraceAbstraction took 3625.22 ms. Allocated memory was 202.4 MB in the beginning and 249.6 MB in the end (delta: 47.2 MB). Free memory was 133.9 MB in the beginning and 164.6 MB in the end (delta: -30.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-09-11 15:09:47,643 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 765.78 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 100.1 MB in the beginning and 160.2 MB in the end (delta: -60.2 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 58.20 ms. Allocated memory is still 202.4 MB. Free memory was 160.2 MB in the beginning and 158.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 31.86 ms. Allocated memory is still 202.4 MB. Free memory was 158.2 MB in the beginning and 156.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 538.82 ms. Allocated memory is still 202.4 MB. Free memory was 156.9 MB in the beginning and 134.5 MB in the end (delta: 22.3 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3625.22 ms. Allocated memory was 202.4 MB in the beginning and 249.6 MB in the end (delta: 47.2 MB). Free memory was 133.9 MB in the beginning and 164.6 MB in the end (delta: -30.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks LbeTime: 2.0s, 78 ProgramPointsBefore, 31 ProgramPointsAfterwards, 70 TransitionsBefore, 22 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 8 FixpointIterations, 14 TrivialSequentialCompositions, 35 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 1 ChoiceCompositions, 679 VarBasedMoverChecksPositive, 35 VarBasedMoverChecksNegative, 18 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.4s, 0 MoverChecksTotal, 2768 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, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 157 SDtfs, 123 SDslu, 177 SDs, 0 SdLazy, 115 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 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, 8 MinimizatonAttempts, 24 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 2940 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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...