/usr/bin/java -Xmx16000000000 -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/safe030_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8 [2021-03-10 17:35:08,556 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-03-10 17:35:08,557 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-03-10 17:35:08,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-03-10 17:35:08,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-03-10 17:35:08,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-03-10 17:35:08,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-03-10 17:35:08,606 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-03-10 17:35:08,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-03-10 17:35:08,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-03-10 17:35:08,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-03-10 17:35:08,617 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-03-10 17:35:08,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-03-10 17:35:08,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-03-10 17:35:08,620 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-03-10 17:35:08,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-03-10 17:35:08,622 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-03-10 17:35:08,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-03-10 17:35:08,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-03-10 17:35:08,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-03-10 17:35:08,632 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 [2021-03-10 17:35:08,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-03-10 17:35:08,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-03-10 17:35:08,659 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-03-10 17:35:08,659 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-03-10 17:35:08,660 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-03-10 17:35:08,660 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-03-10 17:35:08,660 INFO L138 SettingsManager]: * Use SBE=true [2021-03-10 17:35:08,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-03-10 17:35:08,660 INFO L138 SettingsManager]: * sizeof long=4 [2021-03-10 17:35:08,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-03-10 17:35:08,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-03-10 17:35:08,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-03-10 17:35:08,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-03-10 17:35:08,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-03-10 17:35:08,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-03-10 17:35:08,661 INFO L138 SettingsManager]: * sizeof long double=12 [2021-03-10 17:35:08,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-03-10 17:35:08,661 INFO L138 SettingsManager]: * Use constant arrays=true [2021-03-10 17:35:08,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-03-10 17:35:08,661 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-03-10 17:35:08,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-03-10 17:35:08,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-03-10 17:35:08,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-03-10 17:35:08,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-03-10 17:35:08,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-03-10 17:35:08,662 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-03-10 17:35:08,662 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-03-10 17:35:08,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-03-10 17:35:08,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-03-10 17:35:08,662 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-03-10 17:35:08,663 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-03-10 17:35:08,663 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-03-10 17:35:08,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-03-10 17:35:08,906 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-03-10 17:35:08,908 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-03-10 17:35:08,908 INFO L271 PluginConnector]: Initializing CDTParser... [2021-03-10 17:35:08,911 INFO L275 PluginConnector]: CDTParser initialized [2021-03-10 17:35:08,912 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-03-10 17:35:08,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055508245/155014baa45c41819e692ddd3bea857f/FLAG57bf61a23 [2021-03-10 17:35:09,362 INFO L306 CDTParser]: Found 1 translation units. [2021-03-10 17:35:09,362 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i [2021-03-10 17:35:09,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055508245/155014baa45c41819e692ddd3bea857f/FLAG57bf61a23 [2021-03-10 17:35:09,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/055508245/155014baa45c41819e692ddd3bea857f [2021-03-10 17:35:09,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-03-10 17:35:09,696 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-03-10 17:35:09,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-03-10 17:35:09,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-03-10 17:35:09,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-03-10 17:35:09,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:35:09" (1/1) ... [2021-03-10 17:35:09,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d846d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:09, skipping insertion in model container [2021-03-10 17:35:09,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.03 05:35:09" (1/1) ... [2021-03-10 17:35:09,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-03-10 17:35:09,742 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-03-10 17:35:09,839 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i[950,963] [2021-03-10 17:35:09,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:35:09,953 INFO L203 MainTranslator]: Completed pre-run [2021-03-10 17:35:09,960 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe030_tso.oepc.i[950,963] [2021-03-10 17:35:09,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-03-10 17:35:10,019 INFO L208 MainTranslator]: Completed translation [2021-03-10 17:35:10,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:10 WrapperNode [2021-03-10 17:35:10,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-03-10 17:35:10,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-03-10 17:35:10,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-03-10 17:35:10,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-03-10 17:35:10,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:10" (1/1) ... [2021-03-10 17:35:10,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:10" (1/1) ... [2021-03-10 17:35:10,042 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-03-10 17:35:10,043 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-03-10 17:35:10,043 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-03-10 17:35:10,043 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-03-10 17:35:10,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:10" (1/1) ... [2021-03-10 17:35:10,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:10" (1/1) ... [2021-03-10 17:35:10,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:10" (1/1) ... [2021-03-10 17:35:10,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:10" (1/1) ... [2021-03-10 17:35:10,052 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:10" (1/1) ... [2021-03-10 17:35:10,053 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:10" (1/1) ... [2021-03-10 17:35:10,054 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:10" (1/1) ... [2021-03-10 17:35:10,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-03-10 17:35:10,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-03-10 17:35:10,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-03-10 17:35:10,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-03-10 17:35:10,056 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:10" (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 [2021-03-10 17:35:10,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-03-10 17:35:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-03-10 17:35:10,108 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-03-10 17:35:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-03-10 17:35:10,109 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-03-10 17:35:10,110 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-03-10 17:35:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-03-10 17:35:10,111 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-03-10 17:35:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-03-10 17:35:10,111 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-03-10 17:35:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-03-10 17:35:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-03-10 17:35:10,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-03-10 17:35:10,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-03-10 17:35:10,112 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-03-10 17:35:10,410 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-03-10 17:35:10,410 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-03-10 17:35:10,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:35:10 BoogieIcfgContainer [2021-03-10 17:35:10,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-03-10 17:35:10,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-03-10 17:35:10,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-03-10 17:35:10,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-03-10 17:35:10,415 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.03 05:35:09" (1/3) ... [2021-03-10 17:35:10,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ec8953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:35:10, skipping insertion in model container [2021-03-10 17:35:10,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.03 05:35:10" (2/3) ... [2021-03-10 17:35:10,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ec8953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.03 05:35:10, skipping insertion in model container [2021-03-10 17:35:10,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.03 05:35:10" (3/3) ... [2021-03-10 17:35:10,417 INFO L111 eAbstractionObserver]: Analyzing ICFG safe030_tso.oepc.i [2021-03-10 17:35:10,421 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-03-10 17:35:10,421 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-03-10 17:35:10,424 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-03-10 17:35:10,425 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-03-10 17:35:10,447 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,448 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,448 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,448 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,448 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,448 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,448 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,449 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,449 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,450 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,450 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,450 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,451 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,451 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,451 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,452 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,452 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,452 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,453 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,454 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,454 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,454 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,454 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,455 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,455 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,455 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,455 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,457 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,457 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,457 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,461 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,461 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,463 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,463 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,463 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,463 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-03-10 17:35:10,466 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-03-10 17:35:10,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-03-10 17:35:10,500 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-03-10 17:35:10,500 INFO L377 AbstractCegarLoop]: Hoare is true [2021-03-10 17:35:10,500 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-03-10 17:35:10,500 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-03-10 17:35:10,500 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-03-10 17:35:10,500 INFO L381 AbstractCegarLoop]: Difference is false [2021-03-10 17:35:10,500 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-03-10 17:35:10,500 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-03-10 17:35:10,509 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 81 places, 73 transitions, 161 flow [2021-03-10 17:35:10,851 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8817 states, 8815 states have (on average 3.5813953488372094) internal successors, (31570), 8816 states have internal predecessors, (31570), 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) [2021-03-10 17:35:10,884 INFO L276 IsEmpty]: Start isEmpty. Operand has 8817 states, 8815 states have (on average 3.5813953488372094) internal successors, (31570), 8816 states have internal predecessors, (31570), 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) [2021-03-10 17:35:10,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-03-10 17:35:10,914 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:10,915 INFO L519 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] [2021-03-10 17:35:10,915 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:10,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:10,918 INFO L82 PathProgramCache]: Analyzing trace with hash -98054960, now seen corresponding path program 1 times [2021-03-10 17:35:10,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:10,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613098602] [2021-03-10 17:35:10,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:11,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:35:11,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613098602] [2021-03-10 17:35:11,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:11,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:35:11,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598116360] [2021-03-10 17:35:11,220 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:35:11,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:11,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:35:11,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:35:11,280 INFO L87 Difference]: Start difference. First operand has 8817 states, 8815 states have (on average 3.5813953488372094) internal successors, (31570), 8816 states have internal predecessors, (31570), 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 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2021-03-10 17:35:11,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:11,636 INFO L93 Difference]: Finished difference Result 17284 states and 60768 transitions. [2021-03-10 17:35:11,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:35:11,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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 38 [2021-03-10 17:35:11,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:11,678 INFO L225 Difference]: With dead ends: 17284 [2021-03-10 17:35:11,679 INFO L226 Difference]: Without dead ends: 5221 [2021-03-10 17:35:11,680 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 172.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:35:11,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5221 states. [2021-03-10 17:35:11,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5221 to 4573. [2021-03-10 17:35:11,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4573 states, 4572 states have (on average 3.3173665791776026) internal successors, (15167), 4572 states have internal predecessors, (15167), 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) [2021-03-10 17:35:11,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4573 states to 4573 states and 15167 transitions. [2021-03-10 17:35:11,882 INFO L78 Accepts]: Start accepts. Automaton has 4573 states and 15167 transitions. Word has length 38 [2021-03-10 17:35:11,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:11,883 INFO L480 AbstractCegarLoop]: Abstraction has 4573 states and 15167 transitions. [2021-03-10 17:35:11,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 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) [2021-03-10 17:35:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 4573 states and 15167 transitions. [2021-03-10 17:35:11,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 17:35:11,893 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:11,893 INFO L519 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] [2021-03-10 17:35:11,897 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-03-10 17:35:11,897 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:11,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:11,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1205271919, now seen corresponding path program 1 times [2021-03-10 17:35:11,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:11,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630024556] [2021-03-10 17:35:11,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:12,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:35:12,039 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630024556] [2021-03-10 17:35:12,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:12,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:35:12,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048083291] [2021-03-10 17:35:12,040 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:35:12,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:12,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:35:12,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:35:12,041 INFO L87 Difference]: Start difference. First operand 4573 states and 15167 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:35:12,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:12,227 INFO L93 Difference]: Finished difference Result 6421 states and 21264 transitions. [2021-03-10 17:35:12,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:35:12,228 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 40 [2021-03-10 17:35:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:12,248 INFO L225 Difference]: With dead ends: 6421 [2021-03-10 17:35:12,248 INFO L226 Difference]: Without dead ends: 4825 [2021-03-10 17:35:12,249 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 163.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:35:12,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4825 states. [2021-03-10 17:35:12,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4825 to 4217. [2021-03-10 17:35:12,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4217 states, 4216 states have (on average 3.286764705882353) internal successors, (13857), 4216 states have internal predecessors, (13857), 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) [2021-03-10 17:35:12,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4217 states to 4217 states and 13857 transitions. [2021-03-10 17:35:12,370 INFO L78 Accepts]: Start accepts. Automaton has 4217 states and 13857 transitions. Word has length 40 [2021-03-10 17:35:12,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:12,371 INFO L480 AbstractCegarLoop]: Abstraction has 4217 states and 13857 transitions. [2021-03-10 17:35:12,371 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:35:12,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4217 states and 13857 transitions. [2021-03-10 17:35:12,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-03-10 17:35:12,376 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:12,376 INFO L519 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] [2021-03-10 17:35:12,376 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-03-10 17:35:12,376 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:12,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:12,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1185965103, now seen corresponding path program 1 times [2021-03-10 17:35:12,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:12,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500736598] [2021-03-10 17:35:12,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:12,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:35:12,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500736598] [2021-03-10 17:35:12,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:12,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:35:12,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212659014] [2021-03-10 17:35:12,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:35:12,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:12,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:35:12,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:35:12,464 INFO L87 Difference]: Start difference. First operand 4217 states and 13857 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:35:12,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:12,619 INFO L93 Difference]: Finished difference Result 5737 states and 18862 transitions. [2021-03-10 17:35:12,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:35:12,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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 40 [2021-03-10 17:35:12,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:12,649 INFO L225 Difference]: With dead ends: 5737 [2021-03-10 17:35:12,649 INFO L226 Difference]: Without dead ends: 4549 [2021-03-10 17:35:12,650 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 112.7ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:35:12,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4549 states. [2021-03-10 17:35:12,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4549 to 3981. [2021-03-10 17:35:12,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3981 states, 3980 states have (on average 3.263065326633166) internal successors, (12987), 3980 states have internal predecessors, (12987), 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) [2021-03-10 17:35:12,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3981 states to 3981 states and 12987 transitions. [2021-03-10 17:35:12,756 INFO L78 Accepts]: Start accepts. Automaton has 3981 states and 12987 transitions. Word has length 40 [2021-03-10 17:35:12,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:12,757 INFO L480 AbstractCegarLoop]: Abstraction has 3981 states and 12987 transitions. [2021-03-10 17:35:12,757 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 7 states have internal predecessors, (40), 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) [2021-03-10 17:35:12,757 INFO L276 IsEmpty]: Start isEmpty. Operand 3981 states and 12987 transitions. [2021-03-10 17:35:12,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-03-10 17:35:12,762 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:12,762 INFO L519 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] [2021-03-10 17:35:12,762 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-03-10 17:35:12,762 INFO L428 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:12,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:12,763 INFO L82 PathProgramCache]: Analyzing trace with hash -447354610, now seen corresponding path program 1 times [2021-03-10 17:35:12,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:12,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085707228] [2021-03-10 17:35:12,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:35:12,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085707228] [2021-03-10 17:35:12,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:12,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:35:12,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132640999] [2021-03-10 17:35:12,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:35:12,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:12,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:35:12,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:35:12,837 INFO L87 Difference]: Start difference. First operand 3981 states and 12987 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-03-10 17:35:12,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:13,000 INFO L93 Difference]: Finished difference Result 5189 states and 16956 transitions. [2021-03-10 17:35:13,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:35:13,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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 42 [2021-03-10 17:35:13,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:13,013 INFO L225 Difference]: With dead ends: 5189 [2021-03-10 17:35:13,013 INFO L226 Difference]: Without dead ends: 4393 [2021-03-10 17:35:13,013 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 119.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:35:13,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4393 states. [2021-03-10 17:35:13,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4393 to 3849. [2021-03-10 17:35:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 3848 states have (on average 3.251819126819127) internal successors, (12513), 3848 states have internal predecessors, (12513), 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) [2021-03-10 17:35:13,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 12513 transitions. [2021-03-10 17:35:13,091 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 12513 transitions. Word has length 42 [2021-03-10 17:35:13,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:13,091 INFO L480 AbstractCegarLoop]: Abstraction has 3849 states and 12513 transitions. [2021-03-10 17:35:13,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 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) [2021-03-10 17:35:13,092 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 12513 transitions. [2021-03-10 17:35:13,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:35:13,097 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:13,097 INFO L519 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] [2021-03-10 17:35:13,097 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-03-10 17:35:13,097 INFO L428 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:13,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:13,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1098908356, now seen corresponding path program 1 times [2021-03-10 17:35:13,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:13,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784109677] [2021-03-10 17:35:13,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:35:13,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784109677] [2021-03-10 17:35:13,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:13,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:35:13,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434864874] [2021-03-10 17:35:13,179 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:35:13,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:13,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:35:13,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:35:13,180 INFO L87 Difference]: Start difference. First operand 3849 states and 12513 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-03-10 17:35:13,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:13,320 INFO L93 Difference]: Finished difference Result 6181 states and 19850 transitions. [2021-03-10 17:35:13,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:35:13,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2021-03-10 17:35:13,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:13,330 INFO L225 Difference]: With dead ends: 6181 [2021-03-10 17:35:13,331 INFO L226 Difference]: Without dead ends: 4657 [2021-03-10 17:35:13,331 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 113.5ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:35:13,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4657 states. [2021-03-10 17:35:13,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4657 to 3553. [2021-03-10 17:35:13,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3553 states, 3552 states have (on average 3.189470720720721) internal successors, (11329), 3552 states have internal predecessors, (11329), 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) [2021-03-10 17:35:13,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 11329 transitions. [2021-03-10 17:35:13,449 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 11329 transitions. Word has length 43 [2021-03-10 17:35:13,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:13,450 INFO L480 AbstractCegarLoop]: Abstraction has 3553 states and 11329 transitions. [2021-03-10 17:35:13,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-03-10 17:35:13,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 11329 transitions. [2021-03-10 17:35:13,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:35:13,460 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:13,460 INFO L519 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] [2021-03-10 17:35:13,460 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-03-10 17:35:13,460 INFO L428 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:13,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:13,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1411074826, now seen corresponding path program 1 times [2021-03-10 17:35:13,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:13,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429431126] [2021-03-10 17:35:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:13,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:13,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:35:13,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429431126] [2021-03-10 17:35:13,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:13,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:35:13,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858389052] [2021-03-10 17:35:13,554 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:35:13,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:13,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:35:13,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:35:13,555 INFO L87 Difference]: Start difference. First operand 3553 states and 11329 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-03-10 17:35:13,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:13,698 INFO L93 Difference]: Finished difference Result 5805 states and 18462 transitions. [2021-03-10 17:35:13,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:35:13,698 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2021-03-10 17:35:13,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:13,708 INFO L225 Difference]: With dead ends: 5805 [2021-03-10 17:35:13,709 INFO L226 Difference]: Without dead ends: 4361 [2021-03-10 17:35:13,709 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 113.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:35:13,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4361 states. [2021-03-10 17:35:13,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4361 to 3241. [2021-03-10 17:35:13,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3241 states, 3240 states have (on average 3.150925925925926) internal successors, (10209), 3240 states have internal predecessors, (10209), 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) [2021-03-10 17:35:13,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3241 states to 3241 states and 10209 transitions. [2021-03-10 17:35:13,779 INFO L78 Accepts]: Start accepts. Automaton has 3241 states and 10209 transitions. Word has length 43 [2021-03-10 17:35:13,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:13,779 INFO L480 AbstractCegarLoop]: Abstraction has 3241 states and 10209 transitions. [2021-03-10 17:35:13,779 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-03-10 17:35:13,779 INFO L276 IsEmpty]: Start isEmpty. Operand 3241 states and 10209 transitions. [2021-03-10 17:35:13,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-03-10 17:35:13,785 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:13,786 INFO L519 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] [2021-03-10 17:35:13,786 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-03-10 17:35:13,786 INFO L428 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:13,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:13,786 INFO L82 PathProgramCache]: Analyzing trace with hash -856418602, now seen corresponding path program 1 times [2021-03-10 17:35:13,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:13,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694928032] [2021-03-10 17:35:13,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:13,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:13,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:35:13,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694928032] [2021-03-10 17:35:13,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:13,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:35:13,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309301701] [2021-03-10 17:35:13,863 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:35:13,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:13,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:35:13,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:35:13,863 INFO L87 Difference]: Start difference. First operand 3241 states and 10209 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-03-10 17:35:14,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:14,001 INFO L93 Difference]: Finished difference Result 5509 states and 17314 transitions. [2021-03-10 17:35:14,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-03-10 17:35:14,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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 43 [2021-03-10 17:35:14,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:14,011 INFO L225 Difference]: With dead ends: 5509 [2021-03-10 17:35:14,011 INFO L226 Difference]: Without dead ends: 4065 [2021-03-10 17:35:14,012 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 114.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-03-10 17:35:14,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4065 states. [2021-03-10 17:35:14,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4065 to 2945. [2021-03-10 17:35:14,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2945 states, 2944 states have (on average 3.115828804347826) internal successors, (9173), 2944 states have internal predecessors, (9173), 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) [2021-03-10 17:35:14,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2945 states to 2945 states and 9173 transitions. [2021-03-10 17:35:14,104 INFO L78 Accepts]: Start accepts. Automaton has 2945 states and 9173 transitions. Word has length 43 [2021-03-10 17:35:14,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:14,104 INFO L480 AbstractCegarLoop]: Abstraction has 2945 states and 9173 transitions. [2021-03-10 17:35:14,104 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 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) [2021-03-10 17:35:14,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2945 states and 9173 transitions. [2021-03-10 17:35:14,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-03-10 17:35:14,108 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:14,108 INFO L519 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] [2021-03-10 17:35:14,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-03-10 17:35:14,108 INFO L428 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:14,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:14,109 INFO L82 PathProgramCache]: Analyzing trace with hash 781264463, now seen corresponding path program 1 times [2021-03-10 17:35:14,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:14,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084636430] [2021-03-10 17:35:14,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:14,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:35:14,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084636430] [2021-03-10 17:35:14,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:14,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-03-10 17:35:14,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240587368] [2021-03-10 17:35:14,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-03-10 17:35:14,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:14,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-03-10 17:35:14,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-03-10 17:35:14,183 INFO L87 Difference]: Start difference. First operand 2945 states and 9173 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-03-10 17:35:14,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:14,262 INFO L93 Difference]: Finished difference Result 3698 states and 11274 transitions. [2021-03-10 17:35:14,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-03-10 17:35:14,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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 44 [2021-03-10 17:35:14,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:14,267 INFO L225 Difference]: With dead ends: 3698 [2021-03-10 17:35:14,268 INFO L226 Difference]: Without dead ends: 2580 [2021-03-10 17:35:14,268 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 60.2ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-03-10 17:35:14,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2021-03-10 17:35:14,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 2580. [2021-03-10 17:35:14,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2580 states, 2579 states have (on average 3.037999224505622) internal successors, (7835), 2579 states have internal predecessors, (7835), 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) [2021-03-10 17:35:14,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2580 states to 2580 states and 7835 transitions. [2021-03-10 17:35:14,322 INFO L78 Accepts]: Start accepts. Automaton has 2580 states and 7835 transitions. Word has length 44 [2021-03-10 17:35:14,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:14,322 INFO L480 AbstractCegarLoop]: Abstraction has 2580 states and 7835 transitions. [2021-03-10 17:35:14,322 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 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) [2021-03-10 17:35:14,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2580 states and 7835 transitions. [2021-03-10 17:35:14,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-03-10 17:35:14,326 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:14,326 INFO L519 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] [2021-03-10 17:35:14,326 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-03-10 17:35:14,326 INFO L428 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:14,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:14,326 INFO L82 PathProgramCache]: Analyzing trace with hash -460731538, now seen corresponding path program 1 times [2021-03-10 17:35:14,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:14,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027038484] [2021-03-10 17:35:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:35:14,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027038484] [2021-03-10 17:35:14,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:14,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-03-10 17:35:14,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622988200] [2021-03-10 17:35:14,377 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-03-10 17:35:14,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:14,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-03-10 17:35:14,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-03-10 17:35:14,378 INFO L87 Difference]: Start difference. First operand 2580 states and 7835 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-03-10 17:35:14,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:14,466 INFO L93 Difference]: Finished difference Result 2553 states and 7502 transitions. [2021-03-10 17:35:14,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-03-10 17:35:14,466 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2021-03-10 17:35:14,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:14,469 INFO L225 Difference]: With dead ends: 2553 [2021-03-10 17:35:14,469 INFO L226 Difference]: Without dead ends: 1585 [2021-03-10 17:35:14,470 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 70.3ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:35:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1585 states. [2021-03-10 17:35:14,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1585 to 1585. [2021-03-10 17:35:14,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1585 states, 1584 states have (on average 2.8592171717171717) internal successors, (4529), 1584 states have internal predecessors, (4529), 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) [2021-03-10 17:35:14,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1585 states to 1585 states and 4529 transitions. [2021-03-10 17:35:14,493 INFO L78 Accepts]: Start accepts. Automaton has 1585 states and 4529 transitions. Word has length 46 [2021-03-10 17:35:14,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:14,493 INFO L480 AbstractCegarLoop]: Abstraction has 1585 states and 4529 transitions. [2021-03-10 17:35:14,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-03-10 17:35:14,493 INFO L276 IsEmpty]: Start isEmpty. Operand 1585 states and 4529 transitions. [2021-03-10 17:35:14,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-03-10 17:35:14,495 INFO L511 BasicCegarLoop]: Found error trace [2021-03-10 17:35:14,495 INFO L519 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] [2021-03-10 17:35:14,495 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-03-10 17:35:14,495 INFO L428 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-03-10 17:35:14,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-03-10 17:35:14,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1413381005, now seen corresponding path program 1 times [2021-03-10 17:35:14,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-03-10 17:35:14,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979185862] [2021-03-10 17:35:14,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-03-10 17:35:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-03-10 17:35:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-03-10 17:35:14,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979185862] [2021-03-10 17:35:14,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-03-10 17:35:14,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-03-10 17:35:14,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763332445] [2021-03-10 17:35:14,584 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-03-10 17:35:14,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-03-10 17:35:14,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-03-10 17:35:14,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-03-10 17:35:14,585 INFO L87 Difference]: Start difference. First operand 1585 states and 4529 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2021-03-10 17:35:14,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-03-10 17:35:14,647 INFO L93 Difference]: Finished difference Result 1018 states and 2774 transitions. [2021-03-10 17:35:14,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-03-10 17:35:14,648 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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 48 [2021-03-10 17:35:14,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-03-10 17:35:14,648 INFO L225 Difference]: With dead ends: 1018 [2021-03-10 17:35:14,648 INFO L226 Difference]: Without dead ends: 0 [2021-03-10 17:35:14,648 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 72.7ms TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-03-10 17:35:14,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-03-10 17:35:14,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-03-10 17:35:14,649 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) [2021-03-10 17:35:14,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-03-10 17:35:14,649 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-03-10 17:35:14,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-03-10 17:35:14,649 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-03-10 17:35:14,649 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 8 states have internal predecessors, (48), 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) [2021-03-10 17:35:14,649 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-03-10 17:35:14,649 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-03-10 17:35:14,649 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-03-10 17:35:14,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.03 05:35:14 BasicIcfg [2021-03-10 17:35:14,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-03-10 17:35:14,655 INFO L168 Benchmark]: Toolchain (without parser) took 4959.20 ms. Allocated memory was 367.0 MB in the beginning and 723.5 MB in the end (delta: 356.5 MB). Free memory was 330.3 MB in the beginning and 430.7 MB in the end (delta: -100.4 MB). Peak memory consumption was 259.6 MB. Max. memory is 16.0 GB. [2021-03-10 17:35:14,655 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 367.0 MB. Free memory was 348.2 MB in the beginning and 348.1 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:35:14,655 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.94 ms. Allocated memory is still 367.0 MB. Free memory was 329.7 MB in the beginning and 329.6 MB in the end (delta: 153.1 kB). Peak memory consumption was 10.9 MB. Max. memory is 16.0 GB. [2021-03-10 17:35:14,656 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.49 ms. Allocated memory is still 367.0 MB. Free memory was 329.6 MB in the beginning and 327.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:35:14,656 INFO L168 Benchmark]: Boogie Preprocessor took 12.05 ms. Allocated memory is still 367.0 MB. Free memory was 327.5 MB in the beginning and 326.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-03-10 17:35:14,657 INFO L168 Benchmark]: RCFGBuilder took 356.55 ms. Allocated memory is still 367.0 MB. Free memory was 326.4 MB in the beginning and 301.3 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-03-10 17:35:14,657 INFO L168 Benchmark]: TraceAbstraction took 4239.55 ms. Allocated memory was 367.0 MB in the beginning and 723.5 MB in the end (delta: 356.5 MB). Free memory was 301.3 MB in the beginning and 430.7 MB in the end (delta: -129.5 MB). Peak memory consumption was 229.1 MB. Max. memory is 16.0 GB. [2021-03-10 17:35:14,662 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 367.0 MB. Free memory was 348.2 MB in the beginning and 348.1 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 319.94 ms. Allocated memory is still 367.0 MB. Free memory was 329.7 MB in the beginning and 329.6 MB in the end (delta: 153.1 kB). Peak memory consumption was 10.9 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.49 ms. Allocated memory is still 367.0 MB. Free memory was 329.6 MB in the beginning and 327.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.05 ms. Allocated memory is still 367.0 MB. Free memory was 327.5 MB in the beginning and 326.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 356.55 ms. Allocated memory is still 367.0 MB. Free memory was 326.4 MB in the beginning and 301.3 MB in the end (delta: 25.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4239.55 ms. Allocated memory was 367.0 MB in the beginning and 723.5 MB in the end (delta: 356.5 MB). Free memory was 301.3 MB in the beginning and 430.7 MB in the end (delta: -129.5 MB). Peak memory consumption was 229.1 MB. Max. memory is 16.0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4152.3ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 108.7ms, AutomataDifference: 1726.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 351.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1056 SDtfs, 1585 SDslu, 3681 SDs, 0 SdLazy, 417 SolverSat, 84 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 317.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 138 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1113.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=8817occurred in iteration=0, InterpolantAutomatonStates: 114, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 856.5ms AutomataMinimizationTime, 10 MinimizatonAttempts, 5712 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 24.3ms SsaConstructionTime, 153.6ms SatisfiabilityAnalysisTime, 770.3ms InterpolantComputationTime, 427 NumberOfCodeBlocks, 427 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 417 ConstructedInterpolants, 0 QuantifiedInterpolants, 1783 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...