/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/safe035_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-b09bf87 [2020-10-16 11:22:33,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 11:22:33,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 11:22:33,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 11:22:33,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 11:22:33,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 11:22:33,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 11:22:33,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 11:22:33,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 11:22:33,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 11:22:33,955 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 11:22:33,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 11:22:33,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 11:22:33,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 11:22:33,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 11:22:33,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 11:22:33,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 11:22:33,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 11:22:33,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 11:22:33,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 11:22:33,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 11:22:33,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 11:22:33,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 11:22:33,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 11:22:33,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-16 11:22:33,990 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-16 11:22:33,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-16 11:22:33,993 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-16 11:22:33,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-16 11:22:33,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-16 11:22:33,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 11:22:33,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 11:22:33,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 11:22:33,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 11:22:34,008 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 11:22:34,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 11:22:34,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 11:22:34,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 11:22:34,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 11:22:34,016 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 11:22:34,017 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 11:22:34,021 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 [2020-10-16 11:22:34,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 11:22:34,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 11:22:34,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 11:22:34,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 11:22:34,066 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 11:22:34,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 11:22:34,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 11:22:34,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 11:22:34,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 11:22:34,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 11:22:34,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 11:22:34,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 11:22:34,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 11:22:34,069 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 11:22:34,070 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 11:22:34,070 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 11:22:34,070 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 11:22:34,070 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 11:22:34,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 11:22:34,071 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 11:22:34,071 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 11:22:34,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:22:34,071 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 11:22:34,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 11:22:34,072 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 11:22:34,072 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 11:22:34,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 11:22:34,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-16 11:22:34,073 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-16 11:22:34,073 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 11:22:34,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 11:22:34,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 11:22:34,454 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 11:22:34,455 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 11:22:34,456 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 11:22:34,457 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-10-16 11:22:34,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8b4d0d6b/1c9c1e84093b4a3096c61c81294392b4/FLAGdf205d668 [2020-10-16 11:22:35,153 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 11:22:35,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/pthread-wmm/safe035_pso.oepc.i [2020-10-16 11:22:35,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8b4d0d6b/1c9c1e84093b4a3096c61c81294392b4/FLAGdf205d668 [2020-10-16 11:22:35,390 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d8b4d0d6b/1c9c1e84093b4a3096c61c81294392b4 [2020-10-16 11:22:35,400 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 11:22:35,402 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 11:22:35,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 11:22:35,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 11:22:35,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 11:22:35,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:22:35" (1/1) ... [2020-10-16 11:22:35,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35e78913 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:35, skipping insertion in model container [2020-10-16 11:22:35,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 11:22:35" (1/1) ... [2020-10-16 11:22:35,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 11:22:35,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 11:22:35,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:22:35,958 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 11:22:36,013 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 11:22:36,095 INFO L208 MainTranslator]: Completed translation [2020-10-16 11:22:36,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:36 WrapperNode [2020-10-16 11:22:36,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 11:22:36,097 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 11:22:36,097 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 11:22:36,097 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 11:22:36,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:36" (1/1) ... [2020-10-16 11:22:36,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:36" (1/1) ... [2020-10-16 11:22:36,147 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 11:22:36,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 11:22:36,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 11:22:36,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 11:22:36,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:36" (1/1) ... [2020-10-16 11:22:36,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:36" (1/1) ... [2020-10-16 11:22:36,159 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:36" (1/1) ... [2020-10-16 11:22:36,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:36" (1/1) ... [2020-10-16 11:22:36,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:36" (1/1) ... [2020-10-16 11:22:36,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:36" (1/1) ... [2020-10-16 11:22:36,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:36" (1/1) ... [2020-10-16 11:22:36,175 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 11:22:36,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 11:22:36,176 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 11:22:36,176 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 11:22:36,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 11:22:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 11:22:36,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-16 11:22:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 11:22:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 11:22:36,243 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-10-16 11:22:36,244 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-10-16 11:22:36,244 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-10-16 11:22:36,245 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-10-16 11:22:36,245 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-10-16 11:22:36,246 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-10-16 11:22:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-16 11:22:36,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 11:22:36,246 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 11:22:36,249 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-16 11:22:36,630 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 11:22:36,630 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-16 11:22:36,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:22:36 BoogieIcfgContainer [2020-10-16 11:22:36,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 11:22:36,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 11:22:36,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 11:22:36,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 11:22:36,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 11:22:35" (1/3) ... [2020-10-16 11:22:36,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a76d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:22:36, skipping insertion in model container [2020-10-16 11:22:36,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 11:22:36" (2/3) ... [2020-10-16 11:22:36,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a76d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 11:22:36, skipping insertion in model container [2020-10-16 11:22:36,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 11:22:36" (3/3) ... [2020-10-16 11:22:36,643 INFO L111 eAbstractionObserver]: Analyzing ICFG safe035_pso.oepc.i [2020-10-16 11:22:36,656 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-16 11:22:36,656 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 11:22:36,664 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 11:22:36,665 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 11:22:36,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,700 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,701 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,702 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,702 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,702 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,703 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,703 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,703 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,704 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,704 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,705 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,705 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,705 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,706 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,706 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,710 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,710 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,711 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,711 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,718 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,719 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,719 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,719 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,722 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,722 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,723 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 11:22:36,725 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-16 11:22:36,741 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 11:22:36,764 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 11:22:36,765 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-16 11:22:36,765 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 11:22:36,765 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 11:22:36,765 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 11:22:36,765 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 11:22:36,766 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 11:22:36,766 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 11:22:36,781 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 11:22:36,785 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:22:36,788 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 70 transitions, 155 flow [2020-10-16 11:22:36,791 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 78 places, 70 transitions, 155 flow [2020-10-16 11:22:36,841 INFO L129 PetriNetUnfolder]: 2/67 cut-off events. [2020-10-16 11:22:36,842 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 11:22:36,847 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 49 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. [2020-10-16 11:22:36,850 INFO L117 LiptonReduction]: Number of co-enabled transitions 1260 [2020-10-16 11:22:38,582 INFO L132 LiptonReduction]: Checked pairs total: 2520 [2020-10-16 11:22:38,583 INFO L134 LiptonReduction]: Total number of compositions: 58 [2020-10-16 11:22:38,591 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 21 transitions, 57 flow [2020-10-16 11:22:38,618 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 298 states. [2020-10-16 11:22:38,620 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states. [2020-10-16 11:22:38,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-16 11:22:38,629 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:38,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:38,630 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:38,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:38,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1626757645, now seen corresponding path program 1 times [2020-10-16 11:22:38,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:38,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724900100] [2020-10-16 11:22:38,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:38,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724900100] [2020-10-16 11:22:38,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:38,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 11:22:38,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105388532] [2020-10-16 11:22:38,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:22:38,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:38,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:22:38,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:22:38,881 INFO L87 Difference]: Start difference. First operand 298 states. Second operand 3 states. [2020-10-16 11:22:38,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:38,930 INFO L93 Difference]: Finished difference Result 266 states and 752 transitions. [2020-10-16 11:22:38,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:22:38,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-10-16 11:22:38,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:38,948 INFO L225 Difference]: With dead ends: 266 [2020-10-16 11:22:38,949 INFO L226 Difference]: Without dead ends: 202 [2020-10-16 11:22:38,950 INFO L677 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 [2020-10-16 11:22:38,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-10-16 11:22:39,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-10-16 11:22:39,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-16 11:22:39,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 544 transitions. [2020-10-16 11:22:39,016 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 544 transitions. Word has length 8 [2020-10-16 11:22:39,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:39,017 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 544 transitions. [2020-10-16 11:22:39,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:22:39,018 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 544 transitions. [2020-10-16 11:22:39,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-16 11:22:39,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:39,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:39,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 11:22:39,020 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:39,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:39,021 INFO L82 PathProgramCache]: Analyzing trace with hash -54559497, now seen corresponding path program 1 times [2020-10-16 11:22:39,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:39,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14530363] [2020-10-16 11:22:39,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:39,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:39,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14530363] [2020-10-16 11:22:39,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:39,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:22:39,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526354676] [2020-10-16 11:22:39,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 11:22:39,089 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:39,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 11:22:39,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 11:22:39,090 INFO L87 Difference]: Start difference. First operand 202 states and 544 transitions. Second operand 3 states. [2020-10-16 11:22:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:39,113 INFO L93 Difference]: Finished difference Result 266 states and 704 transitions. [2020-10-16 11:22:39,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 11:22:39,114 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-16 11:22:39,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:39,116 INFO L225 Difference]: With dead ends: 266 [2020-10-16 11:22:39,116 INFO L226 Difference]: Without dead ends: 140 [2020-10-16 11:22:39,117 INFO L677 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 [2020-10-16 11:22:39,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-16 11:22:39,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-16 11:22:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-16 11:22:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 362 transitions. [2020-10-16 11:22:39,131 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 362 transitions. Word has length 10 [2020-10-16 11:22:39,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:39,131 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 362 transitions. [2020-10-16 11:22:39,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 11:22:39,132 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 362 transitions. [2020-10-16 11:22:39,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-16 11:22:39,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:39,133 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:39,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 11:22:39,134 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:39,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:39,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1691362226, now seen corresponding path program 1 times [2020-10-16 11:22:39,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:39,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973452240] [2020-10-16 11:22:39,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:39,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973452240] [2020-10-16 11:22:39,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:39,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 11:22:39,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509227876] [2020-10-16 11:22:39,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:22:39,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:39,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:22:39,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:22:39,250 INFO L87 Difference]: Start difference. First operand 140 states and 362 transitions. Second operand 4 states. [2020-10-16 11:22:39,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:39,288 INFO L93 Difference]: Finished difference Result 165 states and 389 transitions. [2020-10-16 11:22:39,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:22:39,288 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-16 11:22:39,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:39,290 INFO L225 Difference]: With dead ends: 165 [2020-10-16 11:22:39,290 INFO L226 Difference]: Without dead ends: 113 [2020-10-16 11:22:39,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:22:39,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-16 11:22:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-10-16 11:22:39,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-16 11:22:39,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 257 transitions. [2020-10-16 11:22:39,301 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 257 transitions. Word has length 11 [2020-10-16 11:22:39,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:39,302 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 257 transitions. [2020-10-16 11:22:39,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:22:39,302 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 257 transitions. [2020-10-16 11:22:39,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-16 11:22:39,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:39,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:39,303 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 11:22:39,303 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:39,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:39,304 INFO L82 PathProgramCache]: Analyzing trace with hash -891715752, now seen corresponding path program 1 times [2020-10-16 11:22:39,304 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:39,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565224001] [2020-10-16 11:22:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:39,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:39,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565224001] [2020-10-16 11:22:39,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:39,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:22:39,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086403228] [2020-10-16 11:22:39,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-16 11:22:39,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:39,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-16 11:22:39,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:22:39,389 INFO L87 Difference]: Start difference. First operand 113 states and 257 transitions. Second operand 5 states. [2020-10-16 11:22:39,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:39,437 INFO L93 Difference]: Finished difference Result 111 states and 232 transitions. [2020-10-16 11:22:39,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-16 11:22:39,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-16 11:22:39,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:39,439 INFO L225 Difference]: With dead ends: 111 [2020-10-16 11:22:39,439 INFO L226 Difference]: Without dead ends: 80 [2020-10-16 11:22:39,440 INFO L677 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 [2020-10-16 11:22:39,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-16 11:22:39,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-16 11:22:39,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-16 11:22:39,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 159 transitions. [2020-10-16 11:22:39,447 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 159 transitions. Word has length 12 [2020-10-16 11:22:39,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:39,447 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 159 transitions. [2020-10-16 11:22:39,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-16 11:22:39,447 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 159 transitions. [2020-10-16 11:22:39,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-16 11:22:39,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:39,449 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:39,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 11:22:39,449 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:39,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:39,449 INFO L82 PathProgramCache]: Analyzing trace with hash 2053094164, now seen corresponding path program 1 times [2020-10-16 11:22:39,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:39,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18816527] [2020-10-16 11:22:39,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:39,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:39,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:39,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18816527] [2020-10-16 11:22:39,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:39,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-16 11:22:39,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895302455] [2020-10-16 11:22:39,565 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-16 11:22:39,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:39,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-16 11:22:39,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-16 11:22:39,566 INFO L87 Difference]: Start difference. First operand 80 states and 159 transitions. Second operand 6 states. [2020-10-16 11:22:39,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:39,641 INFO L93 Difference]: Finished difference Result 75 states and 147 transitions. [2020-10-16 11:22:39,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-16 11:22:39,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-16 11:22:39,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:39,643 INFO L225 Difference]: With dead ends: 75 [2020-10-16 11:22:39,643 INFO L226 Difference]: Without dead ends: 66 [2020-10-16 11:22:39,644 INFO L677 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 [2020-10-16 11:22:39,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-16 11:22:39,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-16 11:22:39,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-16 11:22:39,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 131 transitions. [2020-10-16 11:22:39,648 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 131 transitions. Word has length 14 [2020-10-16 11:22:39,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:39,649 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 131 transitions. [2020-10-16 11:22:39,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-16 11:22:39,649 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 131 transitions. [2020-10-16 11:22:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:22:39,650 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:39,650 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:39,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 11:22:39,651 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:39,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:39,651 INFO L82 PathProgramCache]: Analyzing trace with hash -913032564, now seen corresponding path program 1 times [2020-10-16 11:22:39,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:39,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510220794] [2020-10-16 11:22:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:39,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:39,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510220794] [2020-10-16 11:22:39,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:39,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:22:39,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442130612] [2020-10-16 11:22:39,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:22:39,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:39,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:22:39,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:22:39,701 INFO L87 Difference]: Start difference. First operand 66 states and 131 transitions. Second operand 4 states. [2020-10-16 11:22:39,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:39,722 INFO L93 Difference]: Finished difference Result 85 states and 165 transitions. [2020-10-16 11:22:39,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:22:39,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 11:22:39,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:39,724 INFO L225 Difference]: With dead ends: 85 [2020-10-16 11:22:39,724 INFO L226 Difference]: Without dead ends: 48 [2020-10-16 11:22:39,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:22:39,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-16 11:22:39,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-16 11:22:39,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-16 11:22:39,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 83 transitions. [2020-10-16 11:22:39,728 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 83 transitions. Word has length 17 [2020-10-16 11:22:39,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:39,728 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 83 transitions. [2020-10-16 11:22:39,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:22:39,729 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 83 transitions. [2020-10-16 11:22:39,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:22:39,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:39,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:39,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 11:22:39,730 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:39,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:39,731 INFO L82 PathProgramCache]: Analyzing trace with hash -1376526520, now seen corresponding path program 2 times [2020-10-16 11:22:39,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:39,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392780655] [2020-10-16 11:22:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:39,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:39,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392780655] [2020-10-16 11:22:39,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:39,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:22:39,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570807381] [2020-10-16 11:22:39,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:22:39,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:39,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:22:39,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:22:39,776 INFO L87 Difference]: Start difference. First operand 48 states and 83 transitions. Second operand 4 states. [2020-10-16 11:22:39,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:39,797 INFO L93 Difference]: Finished difference Result 73 states and 130 transitions. [2020-10-16 11:22:39,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-16 11:22:39,798 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 11:22:39,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:39,799 INFO L225 Difference]: With dead ends: 73 [2020-10-16 11:22:39,799 INFO L226 Difference]: Without dead ends: 42 [2020-10-16 11:22:39,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:22:39,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-16 11:22:39,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-16 11:22:39,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-16 11:22:39,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 71 transitions. [2020-10-16 11:22:39,803 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 71 transitions. Word has length 17 [2020-10-16 11:22:39,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:39,803 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 71 transitions. [2020-10-16 11:22:39,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:22:39,803 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 71 transitions. [2020-10-16 11:22:39,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-16 11:22:39,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-16 11:22:39,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 11:22:39,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 11:22:39,805 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 11:22:39,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 11:22:39,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1323635892, now seen corresponding path program 3 times [2020-10-16 11:22:39,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 11:22:39,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237130045] [2020-10-16 11:22:39,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 11:22:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 11:22:39,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-16 11:22:39,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237130045] [2020-10-16 11:22:39,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 11:22:39,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-16 11:22:39,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328708990] [2020-10-16 11:22:39,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-16 11:22:39,847 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 11:22:39,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-16 11:22:39,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-16 11:22:39,848 INFO L87 Difference]: Start difference. First operand 42 states and 71 transitions. Second operand 4 states. [2020-10-16 11:22:39,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-16 11:22:39,858 INFO L93 Difference]: Finished difference Result 41 states and 70 transitions. [2020-10-16 11:22:39,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-16 11:22:39,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-16 11:22:39,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-16 11:22:39,859 INFO L225 Difference]: With dead ends: 41 [2020-10-16 11:22:39,859 INFO L226 Difference]: Without dead ends: 0 [2020-10-16 11:22:39,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-16 11:22:39,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-16 11:22:39,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-16 11:22:39,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-16 11:22:39,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-16 11:22:39,861 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-10-16 11:22:39,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-16 11:22:39,861 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-16 11:22:39,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-16 11:22:39,862 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-16 11:22:39,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-16 11:22:39,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 11:22:39,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 11:22:39 BasicIcfg [2020-10-16 11:22:39,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-16 11:22:39,869 INFO L168 Benchmark]: Toolchain (without parser) took 4466.13 ms. Allocated memory was 146.8 MB in the beginning and 249.0 MB in the end (delta: 102.2 MB). Free memory was 101.8 MB in the beginning and 169.3 MB in the end (delta: -67.5 MB). Peak memory consumption was 34.8 MB. Max. memory is 7.1 GB. [2020-10-16 11:22:39,870 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-10-16 11:22:39,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.78 ms. Allocated memory was 146.8 MB in the beginning and 201.9 MB in the end (delta: 55.1 MB). Free memory was 101.4 MB in the beginning and 156.9 MB in the end (delta: -55.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-10-16 11:22:39,872 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.69 ms. Allocated memory is still 201.9 MB. Free memory was 156.9 MB in the beginning and 154.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:22:39,872 INFO L168 Benchmark]: Boogie Preprocessor took 28.12 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 152.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-10-16 11:22:39,873 INFO L168 Benchmark]: RCFGBuilder took 457.46 ms. Allocated memory is still 201.9 MB. Free memory was 152.8 MB in the beginning and 130.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:22:39,874 INFO L168 Benchmark]: TraceAbstraction took 3231.34 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 129.5 MB in the beginning and 169.3 MB in the end (delta: -39.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 7.1 GB. [2020-10-16 11:22:39,879 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 146.8 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.78 ms. Allocated memory was 146.8 MB in the beginning and 201.9 MB in the end (delta: 55.1 MB). Free memory was 101.4 MB in the beginning and 156.9 MB in the end (delta: -55.5 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 50.69 ms. Allocated memory is still 201.9 MB. Free memory was 156.9 MB in the beginning and 154.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 28.12 ms. Allocated memory is still 201.9 MB. Free memory was 154.9 MB in the beginning and 152.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 457.46 ms. Allocated memory is still 201.9 MB. Free memory was 152.8 MB in the beginning and 130.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3231.34 ms. Allocated memory was 201.9 MB in the beginning and 249.0 MB in the end (delta: 47.2 MB). Free memory was 129.5 MB in the beginning and 169.3 MB in the end (delta: -39.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 837 VarBasedMoverChecksPositive, 42 VarBasedMoverChecksNegative, 8 SemBasedMoverChecksPositive, 34 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.2s, 63 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 1.7s, 78 PlacesBefore, 31 PlacesAfterwards, 70 TransitionsBefore, 21 TransitionsAfterwards, 1260 CoEnabledTransitionPairs, 6 FixpointIterations, 14 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 2520 MoverChecksTotal - PositiveResult [Line: 7]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 156 SDtfs, 123 SDslu, 193 SDs, 0 SdLazy, 117 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 98 ConstructedInterpolants, 0 QuantifiedInterpolants, 3084 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...