/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 18:51:17,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 18:51:17,131 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 18:51:17,167 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-13 18:51:17,167 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-13 18:51:17,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-13 18:51:17,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-13 18:51:17,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-13 18:51:17,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-13 18:51:17,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-13 18:51:17,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-13 18:51:17,187 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-13 18:51:17,187 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-13 18:51:17,188 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-13 18:51:17,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-13 18:51:17,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-13 18:51:17,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-13 18:51:17,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-13 18:51:17,191 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-13 18:51:17,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-13 18:51:17,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-13 18:51:17,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-13 18:51:17,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-13 18:51:17,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-13 18:51:17,206 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-13 18:51:17,210 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 18:51:17,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 18:51:17,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 18:51:17,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-07-13 18:51:17,242 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 18:51:17,242 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 18:51:17,243 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 18:51:17,243 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 18:51:17,245 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 18:51:17,245 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 18:51:17,245 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 18:51:17,245 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 18:51:17,245 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 18:51:17,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 18:51:17,246 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 18:51:17,246 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 18:51:17,246 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 18:51:17,246 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 18:51:17,246 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 18:51:17,247 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 18:51:17,247 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 18:51:17,247 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 18:51:17,247 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 18:51:17,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 18:51:17,247 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 18:51:17,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 18:51:17,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 18:51:17,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:51:17,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 18:51:17,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 18:51:17,248 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 18:51:17,248 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 18:51:17,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 18:51:17,248 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 18:51:17,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 18:51:17,248 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 18:51:17,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 18:51:17,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 18:51:17,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 18:51:17,551 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 18:51:17,552 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 18:51:17,552 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc.i [2021-07-13 18:51:17,620 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fd6bac1b/baf5abf3366e49cdad3dd6f74334fe70/FLAGcacd6f972 [2021-07-13 18:51:18,093 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 18:51:18,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc.i [2021-07-13 18:51:18,145 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fd6bac1b/baf5abf3366e49cdad3dd6f74334fe70/FLAGcacd6f972 [2021-07-13 18:51:18,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fd6bac1b/baf5abf3366e49cdad3dd6f74334fe70 [2021-07-13 18:51:18,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 18:51:18,595 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 18:51:18,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 18:51:18,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 18:51:18,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 18:51:18,600 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:51:18" (1/1) ... [2021-07-13 18:51:18,601 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ae74bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:18, skipping insertion in model container [2021-07-13 18:51:18,601 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:51:18" (1/1) ... [2021-07-13 18:51:18,606 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 18:51:18,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 18:51:18,764 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc.i[950,963] [2021-07-13 18:51:18,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:51:18,933 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 18:51:18,942 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe007_pso.oepc.i[950,963] [2021-07-13 18:51:18,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:51:19,002 INFO L208 MainTranslator]: Completed translation [2021-07-13 18:51:19,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:19 WrapperNode [2021-07-13 18:51:19,003 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 18:51:19,003 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 18:51:19,003 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 18:51:19,004 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 18:51:19,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:19" (1/1) ... [2021-07-13 18:51:19,033 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:19" (1/1) ... [2021-07-13 18:51:19,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 18:51:19,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 18:51:19,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 18:51:19,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 18:51:19,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:19" (1/1) ... [2021-07-13 18:51:19,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:19" (1/1) ... [2021-07-13 18:51:19,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:19" (1/1) ... [2021-07-13 18:51:19,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:19" (1/1) ... [2021-07-13 18:51:19,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:19" (1/1) ... [2021-07-13 18:51:19,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:19" (1/1) ... [2021-07-13 18:51:19,077 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:19" (1/1) ... [2021-07-13 18:51:19,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 18:51:19,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 18:51:19,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 18:51:19,079 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 18:51:19,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-07-13 18:51:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 18:51:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-13 18:51:19,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 18:51:19,164 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 18:51:19,164 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-13 18:51:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-13 18:51:19,165 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-13 18:51:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-13 18:51:19,165 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-13 18:51:19,165 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-13 18:51:19,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 18:51:19,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-13 18:51:19,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 18:51:19,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 18:51:19,167 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 18:51:19,444 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 18:51:19,445 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-13 18:51:19,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:51:19 BoogieIcfgContainer [2021-07-13 18:51:19,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 18:51:19,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 18:51:19,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 18:51:19,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 18:51:19,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:51:18" (1/3) ... [2021-07-13 18:51:19,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7d11d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:51:19, skipping insertion in model container [2021-07-13 18:51:19,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:51:19" (2/3) ... [2021-07-13 18:51:19,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f7d11d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:51:19, skipping insertion in model container [2021-07-13 18:51:19,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:51:19" (3/3) ... [2021-07-13 18:51:19,458 INFO L111 eAbstractionObserver]: Analyzing ICFG safe007_pso.oepc.i [2021-07-13 18:51:19,462 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 18:51:19,462 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 18:51:19,462 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 18:51:19,462 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 18:51:19,494 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,494 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,494 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,494 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,494 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,495 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,495 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,495 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,496 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,496 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,497 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,497 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,497 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,497 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,498 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,498 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,498 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,498 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,498 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,498 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,498 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,498 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,499 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,500 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,500 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,501 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,505 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,505 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,507 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,507 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,507 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:51:19,508 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-13 18:51:19,528 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-13 18:51:19,546 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:51:19,546 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:51:19,546 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:51:19,546 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:51:19,546 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:51:19,546 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:51:19,546 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:51:19,546 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 18:51:19,554 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 85 transitions, 185 flow [2021-07-13 18:51:19,723 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:19,738 INFO L276 IsEmpty]: Start isEmpty. Operand has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:19,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-07-13 18:51:19,770 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:19,771 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:19,771 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:19,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:19,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1408065288, now seen corresponding path program 1 times [2021-07-13 18:51:19,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:19,783 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130703838] [2021-07-13 18:51:19,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:20,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:20,082 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:20,082 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130703838] [2021-07-13 18:51:20,082 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130703838] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:20,083 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:20,083 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:51:20,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461292280] [2021-07-13 18:51:20,086 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:51:20,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:20,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:51:20,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:51:20,122 INFO L87 Difference]: Start difference. First operand has 5560 states, 5559 states have (on average 3.4934340708760567) internal successors, (19420), 5559 states have internal predecessors, (19420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:20,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:20,395 INFO L93 Difference]: Finished difference Result 6884 states and 23450 transitions. [2021-07-13 18:51:20,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:51:20,397 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-07-13 18:51:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:20,483 INFO L225 Difference]: With dead ends: 6884 [2021-07-13 18:51:20,484 INFO L226 Difference]: Without dead ends: 5169 [2021-07-13 18:51:20,485 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 155.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:51:20,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5169 states. [2021-07-13 18:51:20,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5169 to 5169. [2021-07-13 18:51:20,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5169 states, 5168 states have (on average 3.4171826625387) internal successors, (17660), 5168 states have internal predecessors, (17660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:20,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5169 states to 5169 states and 17660 transitions. [2021-07-13 18:51:20,733 INFO L78 Accepts]: Start accepts. Automaton has 5169 states and 17660 transitions. Word has length 50 [2021-07-13 18:51:20,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:20,736 INFO L482 AbstractCegarLoop]: Abstraction has 5169 states and 17660 transitions. [2021-07-13 18:51:20,737 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:20,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5169 states and 17660 transitions. [2021-07-13 18:51:20,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-13 18:51:20,751 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:20,751 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:20,752 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 18:51:20,752 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:20,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:20,754 INFO L82 PathProgramCache]: Analyzing trace with hash 452026023, now seen corresponding path program 1 times [2021-07-13 18:51:20,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:20,755 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757871680] [2021-07-13 18:51:20,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:20,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:20,906 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:20,907 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757871680] [2021-07-13 18:51:20,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757871680] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:20,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:20,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:51:20,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918914315] [2021-07-13 18:51:20,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:51:20,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:20,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:51:20,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:51:20,911 INFO L87 Difference]: Start difference. First operand 5169 states and 17660 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:21,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:21,083 INFO L93 Difference]: Finished difference Result 5889 states and 19911 transitions. [2021-07-13 18:51:21,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:51:21,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-07-13 18:51:21,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:21,110 INFO L225 Difference]: With dead ends: 5889 [2021-07-13 18:51:21,110 INFO L226 Difference]: Without dead ends: 4629 [2021-07-13 18:51:21,111 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 86.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:51:21,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2021-07-13 18:51:21,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 4629. [2021-07-13 18:51:21,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4628 states have (on average 3.3854796888504755) internal successors, (15668), 4628 states have internal predecessors, (15668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 15668 transitions. [2021-07-13 18:51:21,283 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 15668 transitions. Word has length 52 [2021-07-13 18:51:21,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:21,283 INFO L482 AbstractCegarLoop]: Abstraction has 4629 states and 15668 transitions. [2021-07-13 18:51:21,283 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:21,284 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 15668 transitions. [2021-07-13 18:51:21,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-13 18:51:21,292 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:21,292 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:21,292 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 18:51:21,292 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:21,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:21,293 INFO L82 PathProgramCache]: Analyzing trace with hash -873664247, now seen corresponding path program 1 times [2021-07-13 18:51:21,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:21,293 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018315251] [2021-07-13 18:51:21,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:21,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:21,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:21,379 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:21,379 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018315251] [2021-07-13 18:51:21,379 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018315251] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:21,379 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:21,379 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:51:21,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98235552] [2021-07-13 18:51:21,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:51:21,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:21,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:51:21,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:51:21,381 INFO L87 Difference]: Start difference. First operand 4629 states and 15668 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:21,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:21,564 INFO L93 Difference]: Finished difference Result 5189 states and 17401 transitions. [2021-07-13 18:51:21,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:51:21,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-07-13 18:51:21,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:21,592 INFO L225 Difference]: With dead ends: 5189 [2021-07-13 18:51:21,592 INFO L226 Difference]: Without dead ends: 4209 [2021-07-13 18:51:21,592 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 95.2ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:51:21,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2021-07-13 18:51:21,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 4209. [2021-07-13 18:51:21,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 4208 states have (on average 3.3583650190114067) internal successors, (14132), 4208 states have internal predecessors, (14132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 14132 transitions. [2021-07-13 18:51:21,695 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 14132 transitions. Word has length 52 [2021-07-13 18:51:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:21,697 INFO L482 AbstractCegarLoop]: Abstraction has 4209 states and 14132 transitions. [2021-07-13 18:51:21,697 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:21,697 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 14132 transitions. [2021-07-13 18:51:21,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-13 18:51:21,705 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:21,705 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:21,705 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 18:51:21,705 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:21,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:21,706 INFO L82 PathProgramCache]: Analyzing trace with hash -504396568, now seen corresponding path program 1 times [2021-07-13 18:51:21,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:21,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765248251] [2021-07-13 18:51:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:21,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:21,895 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:21,895 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765248251] [2021-07-13 18:51:21,895 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765248251] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:21,895 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:21,895 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:51:21,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671669156] [2021-07-13 18:51:21,896 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:51:21,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:21,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:51:21,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:51:21,896 INFO L87 Difference]: Start difference. First operand 4209 states and 14132 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:22,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:22,131 INFO L93 Difference]: Finished difference Result 7384 states and 24637 transitions. [2021-07-13 18:51:22,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 18:51:22,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-07-13 18:51:22,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:22,149 INFO L225 Difference]: With dead ends: 7384 [2021-07-13 18:51:22,150 INFO L226 Difference]: Without dead ends: 5184 [2021-07-13 18:51:22,150 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 256.6ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:51:22,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2021-07-13 18:51:22,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 4784. [2021-07-13 18:51:22,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4784 states, 4783 states have (on average 3.3320091992473344) internal successors, (15937), 4783 states have internal predecessors, (15937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:22,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 15937 transitions. [2021-07-13 18:51:22,315 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 15937 transitions. Word has length 54 [2021-07-13 18:51:22,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:22,315 INFO L482 AbstractCegarLoop]: Abstraction has 4784 states and 15937 transitions. [2021-07-13 18:51:22,315 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:22,315 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 15937 transitions. [2021-07-13 18:51:22,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-07-13 18:51:22,324 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:22,324 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:22,325 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 18:51:22,325 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:22,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:22,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1424600964, now seen corresponding path program 2 times [2021-07-13 18:51:22,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:22,325 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475018683] [2021-07-13 18:51:22,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:22,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:22,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:22,396 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:22,396 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475018683] [2021-07-13 18:51:22,396 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475018683] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:22,396 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:22,397 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:51:22,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546470089] [2021-07-13 18:51:22,397 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:51:22,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:22,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:51:22,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:51:22,397 INFO L87 Difference]: Start difference. First operand 4784 states and 15937 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:22,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:22,627 INFO L93 Difference]: Finished difference Result 7784 states and 25782 transitions. [2021-07-13 18:51:22,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 18:51:22,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-07-13 18:51:22,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:22,645 INFO L225 Difference]: With dead ends: 7784 [2021-07-13 18:51:22,645 INFO L226 Difference]: Without dead ends: 5584 [2021-07-13 18:51:22,645 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 182.6ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:51:22,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5584 states. [2021-07-13 18:51:22,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5584 to 4609. [2021-07-13 18:51:22,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4609 states, 4608 states have (on average 3.3153211805555554) internal successors, (15277), 4608 states have internal predecessors, (15277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:22,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 15277 transitions. [2021-07-13 18:51:22,814 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 15277 transitions. Word has length 54 [2021-07-13 18:51:22,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:22,814 INFO L482 AbstractCegarLoop]: Abstraction has 4609 states and 15277 transitions. [2021-07-13 18:51:22,814 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:22,814 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 15277 transitions. [2021-07-13 18:51:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 18:51:22,823 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:22,823 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:22,823 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 18:51:22,823 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:22,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:22,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1337925750, now seen corresponding path program 1 times [2021-07-13 18:51:22,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:22,824 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802324503] [2021-07-13 18:51:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:22,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:22,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:22,890 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802324503] [2021-07-13 18:51:22,890 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802324503] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:22,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:22,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:51:22,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591936583] [2021-07-13 18:51:22,890 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:51:22,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:22,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:51:22,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:51:22,891 INFO L87 Difference]: Start difference. First operand 4609 states and 15277 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:23,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:23,020 INFO L93 Difference]: Finished difference Result 5999 states and 19797 transitions. [2021-07-13 18:51:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 18:51:23,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-07-13 18:51:23,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:23,030 INFO L225 Difference]: With dead ends: 5999 [2021-07-13 18:51:23,030 INFO L226 Difference]: Without dead ends: 2639 [2021-07-13 18:51:23,031 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 100.4ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-07-13 18:51:23,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2021-07-13 18:51:23,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2639. [2021-07-13 18:51:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 2638 states have (on average 3.2505686125852917) internal successors, (8575), 2638 states have internal predecessors, (8575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:23,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 8575 transitions. [2021-07-13 18:51:23,098 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 8575 transitions. Word has length 55 [2021-07-13 18:51:23,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:23,098 INFO L482 AbstractCegarLoop]: Abstraction has 2639 states and 8575 transitions. [2021-07-13 18:51:23,098 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:23,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 8575 transitions. [2021-07-13 18:51:23,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-13 18:51:23,103 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:23,103 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:23,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 18:51:23,104 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:23,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:23,104 INFO L82 PathProgramCache]: Analyzing trace with hash 822730279, now seen corresponding path program 1 times [2021-07-13 18:51:23,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:23,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811416189] [2021-07-13 18:51:23,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:23,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:23,165 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:23,166 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811416189] [2021-07-13 18:51:23,166 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811416189] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:23,166 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:23,166 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:51:23,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086105232] [2021-07-13 18:51:23,166 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:51:23,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:23,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:51:23,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:51:23,167 INFO L87 Difference]: Start difference. First operand 2639 states and 8575 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:23,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:23,283 INFO L93 Difference]: Finished difference Result 3559 states and 11521 transitions. [2021-07-13 18:51:23,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 18:51:23,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-07-13 18:51:23,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:23,289 INFO L225 Difference]: With dead ends: 3559 [2021-07-13 18:51:23,289 INFO L226 Difference]: Without dead ends: 1729 [2021-07-13 18:51:23,290 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 102.1ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-07-13 18:51:23,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-07-13 18:51:23,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1729. [2021-07-13 18:51:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1728 states have (on average 3.1574074074074074) internal successors, (5456), 1728 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 5456 transitions. [2021-07-13 18:51:23,328 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 5456 transitions. Word has length 57 [2021-07-13 18:51:23,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:23,329 INFO L482 AbstractCegarLoop]: Abstraction has 1729 states and 5456 transitions. [2021-07-13 18:51:23,329 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:23,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 5456 transitions. [2021-07-13 18:51:23,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-13 18:51:23,331 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:51:23,332 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:51:23,332 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 18:51:23,332 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:51:23,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:51:23,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1119585077, now seen corresponding path program 1 times [2021-07-13 18:51:23,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:51:23,332 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622868053] [2021-07-13 18:51:23,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:51:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:51:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:51:23,404 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:51:23,404 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622868053] [2021-07-13 18:51:23,404 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622868053] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:51:23,404 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:51:23,404 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:51:23,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525048602] [2021-07-13 18:51:23,404 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:51:23,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:51:23,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:51:23,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:51:23,405 INFO L87 Difference]: Start difference. First operand 1729 states and 5456 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:23,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:51:23,503 INFO L93 Difference]: Finished difference Result 1569 states and 4928 transitions. [2021-07-13 18:51:23,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 18:51:23,503 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-07-13 18:51:23,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:51:23,504 INFO L225 Difference]: With dead ends: 1569 [2021-07-13 18:51:23,504 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 18:51:23,504 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 105.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:51:23,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 18:51:23,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 18:51:23,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:23,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 18:51:23,505 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-07-13 18:51:23,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:51:23,505 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 18:51:23,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:51:23,505 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 18:51:23,505 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 18:51:23,505 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 18:51:23,507 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 18:51:23,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 06:51:23 BasicIcfg [2021-07-13 18:51:23,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 18:51:23,510 INFO L168 Benchmark]: Toolchain (without parser) took 4914.99 ms. Allocated memory was 208.7 MB in the beginning and 947.9 MB in the end (delta: 739.2 MB). Free memory was 170.6 MB in the beginning and 547.7 MB in the end (delta: -377.1 MB). Peak memory consumption was 363.6 MB. Max. memory is 8.0 GB. [2021-07-13 18:51:23,510 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 208.7 MB. Free memory is still 188.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 18:51:23,510 INFO L168 Benchmark]: CACSL2BoogieTranslator took 406.50 ms. Allocated memory is still 208.7 MB. Free memory was 170.4 MB in the beginning and 181.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-13 18:51:23,510 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.08 ms. Allocated memory is still 208.7 MB. Free memory was 181.6 MB in the beginning and 179.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:51:23,510 INFO L168 Benchmark]: Boogie Preprocessor took 26.28 ms. Allocated memory is still 208.7 MB. Free memory was 179.6 MB in the beginning and 178.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-13 18:51:23,511 INFO L168 Benchmark]: RCFGBuilder took 367.56 ms. Allocated memory is still 208.7 MB. Free memory was 178.0 MB in the beginning and 154.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:51:23,511 INFO L168 Benchmark]: TraceAbstraction took 4060.97 ms. Allocated memory was 208.7 MB in the beginning and 947.9 MB in the end (delta: 739.2 MB). Free memory was 153.9 MB in the beginning and 547.7 MB in the end (delta: -393.8 MB). Peak memory consumption was 347.0 MB. Max. memory is 8.0 GB. [2021-07-13 18:51:23,512 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 208.7 MB. Free memory is still 188.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 406.50 ms. Allocated memory is still 208.7 MB. Free memory was 170.4 MB in the beginning and 181.6 MB in the end (delta: -11.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.08 ms. Allocated memory is still 208.7 MB. Free memory was 181.6 MB in the beginning and 179.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 26.28 ms. Allocated memory is still 208.7 MB. Free memory was 179.6 MB in the beginning and 178.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 367.56 ms. Allocated memory is still 208.7 MB. Free memory was 178.0 MB in the beginning and 154.4 MB in the end (delta: 23.6 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4060.97 ms. Allocated memory was 208.7 MB in the beginning and 947.9 MB in the end (delta: 739.2 MB). Free memory was 153.9 MB in the beginning and 547.7 MB in the end (delta: -393.8 MB). Peak memory consumption was 347.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3961.8ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 102.3ms, AutomataDifference: 1677.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 176.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 899 SDtfs, 1228 SDslu, 2922 SDs, 0 SdLazy, 228 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 181.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1084.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=5560occurred in iteration=0, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 952.3ms AutomataMinimizationTime, 8 MinimizatonAttempts, 1375 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 19.8ms SsaConstructionTime, 126.5ms SatisfiabilityAnalysisTime, 758.4ms InterpolantComputationTime, 432 NumberOfCodeBlocks, 432 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 424 ConstructedInterpolants, 0 QuantifiedInterpolants, 2054 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...