/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/safe014_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-12 17:17:10,447 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-12 17:17:10,449 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-12 17:17:10,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-12 17:17:10,540 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-12 17:17:10,540 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-12 17:17:10,541 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-12 17:17:10,545 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 [2021-06-12 17:17:10,592 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-12 17:17:10,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-12 17:17:10,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-12 17:17:10,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-12 17:17:10,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-12 17:17:10,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-12 17:17:10,595 INFO L138 SettingsManager]: * Use SBE=true [2021-06-12 17:17:10,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-12 17:17:10,596 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-12 17:17:10,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-12 17:17:10,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-12 17:17:10,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-12 17:17:10,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-12 17:17:10,597 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-12 17:17:10,597 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-12 17:17:10,597 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-12 17:17:10,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-12 17:17:10,597 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-12 17:17:10,598 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-12 17:17:10,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-12 17:17:10,598 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-12 17:17:10,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-12 17:17:10,598 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-12 17:17:10,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-12 17:17:10,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-12 17:17:10,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-12 17:17:10,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-12 17:17:10,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-12 17:17:10,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-12 17:17:10,599 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-12 17:17:10,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-12 17:17:10,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-12 17:17:10,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-12 17:17:10,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-12 17:17:10,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-12 17:17:10,909 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-12 17:17:10,910 INFO L275 PluginConnector]: CDTParser initialized [2021-06-12 17:17:10,911 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-06-12 17:17:10,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b6e2087/862173ce125842c19a6fd72202ea9c94/FLAG6d7734a9a [2021-06-12 17:17:11,536 INFO L306 CDTParser]: Found 1 translation units. [2021-06-12 17:17:11,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc.i [2021-06-12 17:17:11,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b6e2087/862173ce125842c19a6fd72202ea9c94/FLAG6d7734a9a [2021-06-12 17:17:11,951 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/75b6e2087/862173ce125842c19a6fd72202ea9c94 [2021-06-12 17:17:11,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-12 17:17:11,955 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-12 17:17:11,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-12 17:17:11,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-12 17:17:11,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-12 17:17:11,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:17:11" (1/1) ... [2021-06-12 17:17:11,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64d1a1f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:17:11, skipping insertion in model container [2021-06-12 17:17:11,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.06 05:17:11" (1/1) ... [2021-06-12 17:17:11,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-12 17:17:12,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-12 17:17:12,161 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/safe014_pso.oepc.i[950,963] [2021-06-12 17:17:12,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:17:12,294 INFO L203 MainTranslator]: Completed pre-run [2021-06-12 17:17:12,304 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/safe014_pso.oepc.i[950,963] [2021-06-12 17:17:12,330 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-12 17:17:12,395 INFO L208 MainTranslator]: Completed translation [2021-06-12 17:17:12,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:17:12 WrapperNode [2021-06-12 17:17:12,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-12 17:17:12,397 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-12 17:17:12,397 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-12 17:17:12,397 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-12 17:17:12,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:17:12" (1/1) ... [2021-06-12 17:17:12,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:17:12" (1/1) ... [2021-06-12 17:17:12,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-12 17:17:12,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-12 17:17:12,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-12 17:17:12,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-12 17:17:12,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:17:12" (1/1) ... [2021-06-12 17:17:12,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:17:12" (1/1) ... [2021-06-12 17:17:12,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:17:12" (1/1) ... [2021-06-12 17:17:12,462 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:17:12" (1/1) ... [2021-06-12 17:17:12,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:17:12" (1/1) ... [2021-06-12 17:17:12,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:17:12" (1/1) ... [2021-06-12 17:17:12,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:17:12" (1/1) ... [2021-06-12 17:17:12,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-12 17:17:12,479 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-12 17:17:12,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-12 17:17:12,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-12 17:17:12,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:17:12" (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 [2021-06-12 17:17:12,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-12 17:17:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-12 17:17:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-12 17:17:12,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-12 17:17:12,556 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-12 17:17:12,557 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-12 17:17:12,558 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-12 17:17:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-12 17:17:12,558 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-12 17:17:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-12 17:17:12,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-12 17:17:12,558 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-12 17:17:12,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-12 17:17:12,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-12 17:17:12,559 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-12 17:17:12,982 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-12 17:17:12,983 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-12 17:17:12,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:17:12 BoogieIcfgContainer [2021-06-12 17:17:12,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-12 17:17:12,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-12 17:17:12,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-12 17:17:12,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-12 17:17:12,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.06 05:17:11" (1/3) ... [2021-06-12 17:17:12,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6890ab78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:17:12, skipping insertion in model container [2021-06-12 17:17:12,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.06 05:17:12" (2/3) ... [2021-06-12 17:17:12,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6890ab78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.06 05:17:12, skipping insertion in model container [2021-06-12 17:17:12,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.06 05:17:12" (3/3) ... [2021-06-12 17:17:12,994 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc.i [2021-06-12 17:17:12,999 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-12 17:17:12,999 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-12 17:17:13,000 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-12 17:17:13,000 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-12 17:17:13,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,056 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,056 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,056 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,057 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,057 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,057 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,058 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,058 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,058 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,060 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,060 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,060 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,060 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,064 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,065 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,066 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,067 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,067 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,067 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,067 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,067 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,068 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,068 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,071 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,071 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,071 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,071 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,077 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,077 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,077 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,077 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,079 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,079 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,079 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,079 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-12 17:17:13,084 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-12 17:17:13,098 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-12 17:17:13,113 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-12 17:17:13,114 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-12 17:17:13,114 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-12 17:17:13,114 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-12 17:17:13,114 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-12 17:17:13,114 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-12 17:17:13,114 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-12 17:17:13,114 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-12 17:17:13,123 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-06-12 17:17:13,682 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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) [2021-06-12 17:17:13,721 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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) [2021-06-12 17:17:13,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-12 17:17:13,763 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:17:13,764 INFO L472 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] [2021-06-12 17:17:13,764 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:17:13,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:17:13,772 INFO L82 PathProgramCache]: Analyzing trace with hash 663437649, now seen corresponding path program 1 times [2021-06-12 17:17:13,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:17:13,781 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031670391] [2021-06-12 17:17:13,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:17:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:17:14,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:17:14,235 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:17:14,235 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031670391] [2021-06-12 17:17:14,236 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031670391] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:17:14,236 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:17:14,236 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:17:14,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491941510] [2021-06-12 17:17:14,240 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:17:14,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:17:14,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:17:14,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:17:14,273 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 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 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2021-06-12 17:17:14,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:17:14,700 INFO L93 Difference]: Finished difference Result 21089 states and 72806 transitions. [2021-06-12 17:17:14,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:17:14,702 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 49 [2021-06-12 17:17:14,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:17:14,858 INFO L225 Difference]: With dead ends: 21089 [2021-06-12 17:17:14,858 INFO L226 Difference]: Without dead ends: 7269 [2021-06-12 17:17:14,859 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 127.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:17:14,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7269 states. [2021-06-12 17:17:15,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7269 to 6135. [2021-06-12 17:17:15,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6135 states, 6134 states have (on average 3.373165960221715) internal successors, (20691), 6134 states have internal predecessors, (20691), 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) [2021-06-12 17:17:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6135 states to 6135 states and 20691 transitions. [2021-06-12 17:17:15,254 INFO L78 Accepts]: Start accepts. Automaton has 6135 states and 20691 transitions. Word has length 49 [2021-06-12 17:17:15,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:17:15,257 INFO L482 AbstractCegarLoop]: Abstraction has 6135 states and 20691 transitions. [2021-06-12 17:17:15,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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) [2021-06-12 17:17:15,259 INFO L276 IsEmpty]: Start isEmpty. Operand 6135 states and 20691 transitions. [2021-06-12 17:17:15,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-12 17:17:15,278 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:17:15,279 INFO L472 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] [2021-06-12 17:17:15,279 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-12 17:17:15,279 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:17:15,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:17:15,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1824129874, now seen corresponding path program 1 times [2021-06-12 17:17:15,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:17:15,283 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758914717] [2021-06-12 17:17:15,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:17:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:17:15,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:17:15,428 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:17:15,428 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758914717] [2021-06-12 17:17:15,428 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758914717] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:17:15,428 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:17:15,428 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:17:15,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097957208] [2021-06-12 17:17:15,430 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:17:15,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:17:15,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:17:15,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:17:15,431 INFO L87 Difference]: Start difference. First operand 6135 states and 20691 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-06-12 17:17:15,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:17:15,857 INFO L93 Difference]: Finished difference Result 9517 states and 31675 transitions. [2021-06-12 17:17:15,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-06-12 17:17:15,858 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2021-06-12 17:17:15,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:17:15,908 INFO L225 Difference]: With dead ends: 9517 [2021-06-12 17:17:15,908 INFO L226 Difference]: Without dead ends: 7517 [2021-06-12 17:17:15,909 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 276.9ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-06-12 17:17:15,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7517 states. [2021-06-12 17:17:16,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7517 to 6104. [2021-06-12 17:17:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6104 states, 6103 states have (on average 3.362116991643454) internal successors, (20519), 6103 states have internal predecessors, (20519), 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) [2021-06-12 17:17:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6104 states to 6104 states and 20519 transitions. [2021-06-12 17:17:16,172 INFO L78 Accepts]: Start accepts. Automaton has 6104 states and 20519 transitions. Word has length 51 [2021-06-12 17:17:16,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:17:16,173 INFO L482 AbstractCegarLoop]: Abstraction has 6104 states and 20519 transitions. [2021-06-12 17:17:16,173 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-06-12 17:17:16,173 INFO L276 IsEmpty]: Start isEmpty. Operand 6104 states and 20519 transitions. [2021-06-12 17:17:16,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-12 17:17:16,186 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:17:16,186 INFO L472 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] [2021-06-12 17:17:16,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-12 17:17:16,187 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:17:16,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:17:16,187 INFO L82 PathProgramCache]: Analyzing trace with hash 1915177392, now seen corresponding path program 1 times [2021-06-12 17:17:16,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:17:16,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546737645] [2021-06-12 17:17:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:17:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:17:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:17:16,346 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:17:16,346 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546737645] [2021-06-12 17:17:16,346 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546737645] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:17:16,346 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:17:16,346 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:17:16,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682788407] [2021-06-12 17:17:16,347 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:17:16,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:17:16,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:17:16,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:17:16,348 INFO L87 Difference]: Start difference. First operand 6104 states and 20519 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-06-12 17:17:16,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:17:16,570 INFO L93 Difference]: Finished difference Result 8464 states and 28055 transitions. [2021-06-12 17:17:16,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 17:17:16,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 51 [2021-06-12 17:17:16,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:17:16,586 INFO L225 Difference]: With dead ends: 8464 [2021-06-12 17:17:16,586 INFO L226 Difference]: Without dead ends: 4308 [2021-06-12 17:17:16,586 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 152.2ms TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2021-06-12 17:17:16,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4308 states. [2021-06-12 17:17:16,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4308 to 3848. [2021-06-12 17:17:16,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3848 states, 3847 states have (on average 3.260722641018976) internal successors, (12544), 3847 states have internal predecessors, (12544), 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) [2021-06-12 17:17:16,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3848 states to 3848 states and 12544 transitions. [2021-06-12 17:17:16,769 INFO L78 Accepts]: Start accepts. Automaton has 3848 states and 12544 transitions. Word has length 51 [2021-06-12 17:17:16,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:17:16,770 INFO L482 AbstractCegarLoop]: Abstraction has 3848 states and 12544 transitions. [2021-06-12 17:17:16,770 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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) [2021-06-12 17:17:16,770 INFO L276 IsEmpty]: Start isEmpty. Operand 3848 states and 12544 transitions. [2021-06-12 17:17:16,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-12 17:17:16,777 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:17:16,777 INFO L472 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] [2021-06-12 17:17:16,777 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-12 17:17:16,778 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:17:16,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:17:16,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1721389007, now seen corresponding path program 1 times [2021-06-12 17:17:16,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:17:16,779 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070199798] [2021-06-12 17:17:16,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:17:16,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:17:16,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:17:16,886 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:17:16,886 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070199798] [2021-06-12 17:17:16,886 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070199798] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:17:16,887 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:17:16,887 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:17:16,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961561630] [2021-06-12 17:17:16,887 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:17:16,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:17:16,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:17:16,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:17:16,892 INFO L87 Difference]: Start difference. First operand 3848 states and 12544 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-06-12 17:17:16,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:17:16,991 INFO L93 Difference]: Finished difference Result 4248 states and 13759 transitions. [2021-06-12 17:17:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:17:16,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 53 [2021-06-12 17:17:16,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:17:17,003 INFO L225 Difference]: With dead ends: 4248 [2021-06-12 17:17:17,003 INFO L226 Difference]: Without dead ends: 3548 [2021-06-12 17:17:17,004 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 88.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:17:17,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3548 states. [2021-06-12 17:17:17,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3548 to 3548. [2021-06-12 17:17:17,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3548 states, 3547 states have (on average 3.2320270651254583) internal successors, (11464), 3547 states have internal predecessors, (11464), 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) [2021-06-12 17:17:17,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3548 states to 3548 states and 11464 transitions. [2021-06-12 17:17:17,095 INFO L78 Accepts]: Start accepts. Automaton has 3548 states and 11464 transitions. Word has length 53 [2021-06-12 17:17:17,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:17:17,095 INFO L482 AbstractCegarLoop]: Abstraction has 3548 states and 11464 transitions. [2021-06-12 17:17:17,095 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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) [2021-06-12 17:17:17,095 INFO L276 IsEmpty]: Start isEmpty. Operand 3548 states and 11464 transitions. [2021-06-12 17:17:17,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-12 17:17:17,102 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:17:17,103 INFO L472 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] [2021-06-12 17:17:17,103 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-12 17:17:17,103 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:17:17,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:17:17,104 INFO L82 PathProgramCache]: Analyzing trace with hash 2011978162, now seen corresponding path program 1 times [2021-06-12 17:17:17,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:17:17,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817340213] [2021-06-12 17:17:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:17:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:17:17,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:17:17,256 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:17:17,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817340213] [2021-06-12 17:17:17,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817340213] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:17:17,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:17:17,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:17:17,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616607027] [2021-06-12 17:17:17,257 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:17:17,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:17:17,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:17:17,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:17:17,258 INFO L87 Difference]: Start difference. First operand 3548 states and 11464 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) [2021-06-12 17:17:17,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:17:17,396 INFO L93 Difference]: Finished difference Result 4698 states and 15060 transitions. [2021-06-12 17:17:17,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:17:17,397 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 [2021-06-12 17:17:17,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:17:17,403 INFO L225 Difference]: With dead ends: 4698 [2021-06-12 17:17:17,404 INFO L226 Difference]: Without dead ends: 2158 [2021-06-12 17:17:17,404 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 119.9ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-12 17:17:17,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2021-06-12 17:17:17,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 2158. [2021-06-12 17:17:17,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2158 states, 2157 states have (on average 3.1349095966620304) internal successors, (6762), 2157 states have internal predecessors, (6762), 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) [2021-06-12 17:17:17,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2158 states to 2158 states and 6762 transitions. [2021-06-12 17:17:17,456 INFO L78 Accepts]: Start accepts. Automaton has 2158 states and 6762 transitions. Word has length 55 [2021-06-12 17:17:17,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:17:17,456 INFO L482 AbstractCegarLoop]: Abstraction has 2158 states and 6762 transitions. [2021-06-12 17:17:17,456 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) [2021-06-12 17:17:17,456 INFO L276 IsEmpty]: Start isEmpty. Operand 2158 states and 6762 transitions. [2021-06-12 17:17:17,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-12 17:17:17,461 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:17:17,461 INFO L472 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] [2021-06-12 17:17:17,461 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-12 17:17:17,461 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:17:17,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:17:17,462 INFO L82 PathProgramCache]: Analyzing trace with hash 220416866, now seen corresponding path program 1 times [2021-06-12 17:17:17,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:17:17,462 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701086038] [2021-06-12 17:17:17,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:17:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:17:17,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:17:17,541 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:17:17,541 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701086038] [2021-06-12 17:17:17,542 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701086038] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:17:17,542 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:17:17,542 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:17:17,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587250610] [2021-06-12 17:17:17,542 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:17:17,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:17:17,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:17:17,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:17:17,543 INFO L87 Difference]: Start difference. First operand 2158 states and 6762 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-06-12 17:17:17,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:17:17,800 INFO L93 Difference]: Finished difference Result 3078 states and 9548 transitions. [2021-06-12 17:17:17,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-12 17:17:17,800 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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 56 [2021-06-12 17:17:17,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:17:17,809 INFO L225 Difference]: With dead ends: 3078 [2021-06-12 17:17:17,809 INFO L226 Difference]: Without dead ends: 2422 [2021-06-12 17:17:17,810 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 227.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:17:17,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2422 states. [2021-06-12 17:17:17,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2422 to 2038. [2021-06-12 17:17:17,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2038 states, 2037 states have (on average 3.1183112420225823) internal successors, (6352), 2037 states have internal predecessors, (6352), 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) [2021-06-12 17:17:17,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2038 states to 2038 states and 6352 transitions. [2021-06-12 17:17:17,871 INFO L78 Accepts]: Start accepts. Automaton has 2038 states and 6352 transitions. Word has length 56 [2021-06-12 17:17:17,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:17:17,871 INFO L482 AbstractCegarLoop]: Abstraction has 2038 states and 6352 transitions. [2021-06-12 17:17:17,872 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 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) [2021-06-12 17:17:17,872 INFO L276 IsEmpty]: Start isEmpty. Operand 2038 states and 6352 transitions. [2021-06-12 17:17:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-12 17:17:17,877 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:17:17,877 INFO L472 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] [2021-06-12 17:17:17,877 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-12 17:17:17,877 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:17:17,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:17:17,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1511387322, now seen corresponding path program 1 times [2021-06-12 17:17:17,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:17:17,878 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119655461] [2021-06-12 17:17:17,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:17:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:17:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:17:18,014 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:17:18,014 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119655461] [2021-06-12 17:17:18,014 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119655461] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:17:18,014 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:17:18,014 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-12 17:17:18,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281031960] [2021-06-12 17:17:18,014 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-12 17:17:18,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:17:18,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-12 17:17:18,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-12 17:17:18,015 INFO L87 Difference]: Start difference. First operand 2038 states and 6352 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2021-06-12 17:17:18,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:17:18,121 INFO L93 Difference]: Finished difference Result 2598 states and 8005 transitions. [2021-06-12 17:17:18,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-12 17:17:18,122 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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 [2021-06-12 17:17:18,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:17:18,128 INFO L225 Difference]: With dead ends: 2598 [2021-06-12 17:17:18,128 INFO L226 Difference]: Without dead ends: 1886 [2021-06-12 17:17:18,129 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 84.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:17:18,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1886 states. [2021-06-12 17:17:18,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1886 to 1886. [2021-06-12 17:17:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1885 states have (on average 3.0870026525198937) internal successors, (5819), 1885 states have internal predecessors, (5819), 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) [2021-06-12 17:17:18,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 5819 transitions. [2021-06-12 17:17:18,181 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 5819 transitions. Word has length 57 [2021-06-12 17:17:18,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:17:18,181 INFO L482 AbstractCegarLoop]: Abstraction has 1886 states and 5819 transitions. [2021-06-12 17:17:18,181 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 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) [2021-06-12 17:17:18,181 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 5819 transitions. [2021-06-12 17:17:18,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-12 17:17:18,186 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:17:18,186 INFO L472 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] [2021-06-12 17:17:18,186 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-12 17:17:18,186 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:17:18,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:17:18,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1485208255, now seen corresponding path program 1 times [2021-06-12 17:17:18,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:17:18,187 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000572305] [2021-06-12 17:17:18,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:17:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:17:18,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:17:18,293 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:17:18,294 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000572305] [2021-06-12 17:17:18,294 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000572305] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:17:18,294 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:17:18,294 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:17:18,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397075308] [2021-06-12 17:17:18,296 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:17:18,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:17:18,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:17:18,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:17:18,297 INFO L87 Difference]: Start difference. First operand 1886 states and 5819 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 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) [2021-06-12 17:17:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:17:18,422 INFO L93 Difference]: Finished difference Result 2096 states and 6322 transitions. [2021-06-12 17:17:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-12 17:17:18,423 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 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 [2021-06-12 17:17:18,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:17:18,427 INFO L225 Difference]: With dead ends: 2096 [2021-06-12 17:17:18,428 INFO L226 Difference]: Without dead ends: 1496 [2021-06-12 17:17:18,428 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 98.8ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-12 17:17:18,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2021-06-12 17:17:18,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 1496. [2021-06-12 17:17:18,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1496 states, 1495 states have (on average 2.985953177257525) internal successors, (4464), 1495 states have internal predecessors, (4464), 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) [2021-06-12 17:17:18,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 4464 transitions. [2021-06-12 17:17:18,463 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 4464 transitions. Word has length 58 [2021-06-12 17:17:18,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:17:18,463 INFO L482 AbstractCegarLoop]: Abstraction has 1496 states and 4464 transitions. [2021-06-12 17:17:18,463 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 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) [2021-06-12 17:17:18,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 4464 transitions. [2021-06-12 17:17:18,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-12 17:17:18,466 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:17:18,466 INFO L472 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, 1] [2021-06-12 17:17:18,467 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-12 17:17:18,467 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:17:18,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:17:18,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1317711448, now seen corresponding path program 1 times [2021-06-12 17:17:18,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:17:18,467 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805332244] [2021-06-12 17:17:18,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:17:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:17:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:17:18,554 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:17:18,554 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805332244] [2021-06-12 17:17:18,555 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805332244] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:17:18,555 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:17:18,555 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-12 17:17:18,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307558755] [2021-06-12 17:17:18,555 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-12 17:17:18,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:17:18,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-12 17:17:18,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-12 17:17:18,556 INFO L87 Difference]: Start difference. First operand 1496 states and 4464 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2021-06-12 17:17:18,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:17:18,687 INFO L93 Difference]: Finished difference Result 1325 states and 3840 transitions. [2021-06-12 17:17:18,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-12 17:17:18,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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 59 [2021-06-12 17:17:18,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:17:18,689 INFO L225 Difference]: With dead ends: 1325 [2021-06-12 17:17:18,689 INFO L226 Difference]: Without dead ends: 693 [2021-06-12 17:17:18,690 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 109.0ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-12 17:17:18,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-06-12 17:17:18,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2021-06-12 17:17:18,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 692 states have (on average 2.7846820809248554) internal successors, (1927), 692 states have internal predecessors, (1927), 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) [2021-06-12 17:17:18,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1927 transitions. [2021-06-12 17:17:18,704 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1927 transitions. Word has length 59 [2021-06-12 17:17:18,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:17:18,704 INFO L482 AbstractCegarLoop]: Abstraction has 693 states and 1927 transitions. [2021-06-12 17:17:18,705 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 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) [2021-06-12 17:17:18,705 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1927 transitions. [2021-06-12 17:17:18,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-12 17:17:18,706 INFO L464 BasicCegarLoop]: Found error trace [2021-06-12 17:17:18,706 INFO L472 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, 1, 1, 1] [2021-06-12 17:17:18,707 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-12 17:17:18,707 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-12 17:17:18,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-12 17:17:18,707 INFO L82 PathProgramCache]: Analyzing trace with hash 2004716633, now seen corresponding path program 1 times [2021-06-12 17:17:18,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-12 17:17:18,709 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948335137] [2021-06-12 17:17:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-12 17:17:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-12 17:17:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-12 17:17:18,809 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-12 17:17:18,809 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948335137] [2021-06-12 17:17:18,809 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948335137] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-12 17:17:18,809 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-12 17:17:18,809 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-12 17:17:18,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017624796] [2021-06-12 17:17:18,810 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-12 17:17:18,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-12 17:17:18,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-12 17:17:18,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-12 17:17:18,811 INFO L87 Difference]: Start difference. First operand 693 states and 1927 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2021-06-12 17:17:18,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-12 17:17:18,875 INFO L93 Difference]: Finished difference Result 639 states and 1765 transitions. [2021-06-12 17:17:18,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-12 17:17:18,876 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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 61 [2021-06-12 17:17:18,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-12 17:17:18,876 INFO L225 Difference]: With dead ends: 639 [2021-06-12 17:17:18,876 INFO L226 Difference]: Without dead ends: 0 [2021-06-12 17:17:18,876 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 85.2ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-06-12 17:17:18,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-12 17:17:18,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-12 17:17:18,877 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) [2021-06-12 17:17:18,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-12 17:17:18,877 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-06-12 17:17:18,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-12 17:17:18,877 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-12 17:17:18,877 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 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) [2021-06-12 17:17:18,878 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-12 17:17:18,878 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-12 17:17:18,878 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-12 17:17:18,880 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-12 17:17:18,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.06 05:17:18 BasicIcfg [2021-06-12 17:17:18,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-12 17:17:18,883 INFO L168 Benchmark]: Toolchain (without parser) took 6928.01 ms. Allocated memory was 179.3 MB in the beginning and 805.3 MB in the end (delta: 626.0 MB). Free memory was 142.0 MB in the beginning and 422.4 MB in the end (delta: -280.3 MB). Peak memory consumption was 347.2 MB. Max. memory is 8.0 GB. [2021-06-12 17:17:18,883 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 179.3 MB. Free memory is still 161.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-12 17:17:18,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.23 ms. Allocated memory is still 179.3 MB. Free memory was 141.8 MB in the beginning and 141.1 MB in the end (delta: 636.6 kB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. [2021-06-12 17:17:18,883 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.39 ms. Allocated memory is still 179.3 MB. Free memory was 141.1 MB in the beginning and 139.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:17:18,884 INFO L168 Benchmark]: Boogie Preprocessor took 31.46 ms. Allocated memory is still 179.3 MB. Free memory was 139.1 MB in the beginning and 137.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:17:18,884 INFO L168 Benchmark]: RCFGBuilder took 507.47 ms. Allocated memory is still 179.3 MB. Free memory was 137.8 MB in the beginning and 114.3 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-12 17:17:18,884 INFO L168 Benchmark]: TraceAbstraction took 5893.34 ms. Allocated memory was 179.3 MB in the beginning and 805.3 MB in the end (delta: 626.0 MB). Free memory was 113.8 MB in the beginning and 422.4 MB in the end (delta: -308.5 MB). Peak memory consumption was 318.0 MB. Max. memory is 8.0 GB. [2021-06-12 17:17:18,886 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 179.3 MB. Free memory is still 161.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 438.23 ms. Allocated memory is still 179.3 MB. Free memory was 141.8 MB in the beginning and 141.1 MB in the end (delta: 636.6 kB). Peak memory consumption was 13.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 42.39 ms. Allocated memory is still 179.3 MB. Free memory was 141.1 MB in the beginning and 139.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 31.46 ms. Allocated memory is still 179.3 MB. Free memory was 139.1 MB in the beginning and 137.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 507.47 ms. Allocated memory is still 179.3 MB. Free memory was 137.8 MB in the beginning and 114.3 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5893.34 ms. Allocated memory was 179.3 MB in the beginning and 805.3 MB in the end (delta: 626.0 MB). Free memory was 113.8 MB in the beginning and 422.4 MB in the end (delta: -308.5 MB). Peak memory consumption was 318.0 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, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5766.9ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 145.9ms, AutomataDifference: 2312.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 568.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1067 SDtfs, 1564 SDslu, 3548 SDs, 0 SdLazy, 466 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 342.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1369.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 109, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 1132.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 3391 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 36.3ms SsaConstructionTime, 289.1ms SatisfiabilityAnalysisTime, 1033.5ms InterpolantComputationTime, 550 NumberOfCodeBlocks, 550 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 540 ConstructedInterpolants, 0 QuantifiedInterpolants, 2210 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...