/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-13 18:50:43,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-13 18:50:43,877 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-13 18:50:43,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-13 18:50:43,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-13 18:50:43,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-13 18:50:43,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-13 18:50:43,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2021-07-13 18:50:43,982 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-13 18:50:43,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-13 18:50:43,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-13 18:50:43,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-13 18:50:43,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-13 18:50:43,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-13 18:50:43,985 INFO L138 SettingsManager]: * Use SBE=true [2021-07-13 18:50:43,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-13 18:50:43,985 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-13 18:50:43,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-13 18:50:43,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-13 18:50:43,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-13 18:50:43,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-13 18:50:43,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-13 18:50:43,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-13 18:50:43,987 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-13 18:50:43,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-13 18:50:43,987 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-13 18:50:43,987 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-13 18:50:43,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-13 18:50:43,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-13 18:50:43,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-13 18:50:43,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-13 18:50:43,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:50:43,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-13 18:50:43,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-13 18:50:43,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-13 18:50:43,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-13 18:50:43,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-13 18:50:43,988 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-13 18:50:43,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-13 18:50:43,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-13 18:50:44,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-13 18:50:44,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-13 18:50:44,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-13 18:50:44,276 INFO L271 PluginConnector]: Initializing CDTParser... [2021-07-13 18:50:44,277 INFO L275 PluginConnector]: CDTParser initialized [2021-07-13 18:50:44,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-07-13 18:50:44,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a13bfcab/c1ab3839e8ac4cc9b746fd4980a7acb4/FLAG992ef018d [2021-07-13 18:50:44,821 INFO L306 CDTParser]: Found 1 translation units. [2021-07-13 18:50:44,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i [2021-07-13 18:50:44,837 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a13bfcab/c1ab3839e8ac4cc9b746fd4980a7acb4/FLAG992ef018d [2021-07-13 18:50:45,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a13bfcab/c1ab3839e8ac4cc9b746fd4980a7acb4 [2021-07-13 18:50:45,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-13 18:50:45,306 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-07-13 18:50:45,307 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-07-13 18:50:45,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-07-13 18:50:45,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-07-13 18:50:45,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:50:45" (1/1) ... [2021-07-13 18:50:45,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c79361f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:50:45, skipping insertion in model container [2021-07-13 18:50:45,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:50:45" (1/1) ... [2021-07-13 18:50:45,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-07-13 18:50:45,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-07-13 18:50:45,432 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i[950,963] [2021-07-13 18:50:45,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:50:45,563 INFO L203 MainTranslator]: Completed pre-run [2021-07-13 18:50:45,571 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe002_tso.oepc.i[950,963] [2021-07-13 18:50:45,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-07-13 18:50:45,636 INFO L208 MainTranslator]: Completed translation [2021-07-13 18:50:45,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:50:45 WrapperNode [2021-07-13 18:50:45,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-07-13 18:50:45,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-13 18:50:45,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-13 18:50:45,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-13 18:50:45,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:50:45" (1/1) ... [2021-07-13 18:50:45,666 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:50:45" (1/1) ... [2021-07-13 18:50:45,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-13 18:50:45,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-13 18:50:45,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-13 18:50:45,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-13 18:50:45,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:50:45" (1/1) ... [2021-07-13 18:50:45,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:50:45" (1/1) ... [2021-07-13 18:50:45,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:50:45" (1/1) ... [2021-07-13 18:50:45,699 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:50:45" (1/1) ... [2021-07-13 18:50:45,707 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:50:45" (1/1) ... [2021-07-13 18:50:45,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:50:45" (1/1) ... [2021-07-13 18:50:45,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:50:45" (1/1) ... [2021-07-13 18:50:45,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-13 18:50:45,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-13 18:50:45,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-13 18:50:45,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-13 18:50:45,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:50:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-13 18:50:45,852 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-07-13 18:50:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-07-13 18:50:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-07-13 18:50:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-07-13 18:50:45,853 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-07-13 18:50:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-07-13 18:50:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-07-13 18:50:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-07-13 18:50:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-07-13 18:50:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-07-13 18:50:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-07-13 18:50:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-07-13 18:50:45,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-13 18:50:45,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-13 18:50:45,856 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-13 18:50:46,133 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-13 18:50:46,134 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-07-13 18:50:46,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:50:46 BoogieIcfgContainer [2021-07-13 18:50:46,135 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-13 18:50:46,136 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-13 18:50:46,136 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-13 18:50:46,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-13 18:50:46,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:50:45" (1/3) ... [2021-07-13 18:50:46,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0bf0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:50:46, skipping insertion in model container [2021-07-13 18:50:46,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:50:45" (2/3) ... [2021-07-13 18:50:46,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c0bf0bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:50:46, skipping insertion in model container [2021-07-13 18:50:46,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:50:46" (3/3) ... [2021-07-13 18:50:46,140 INFO L111 eAbstractionObserver]: Analyzing ICFG safe002_tso.oepc.i [2021-07-13 18:50:46,144 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-13 18:50:46,144 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-13 18:50:46,144 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-13 18:50:46,144 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-13 18:50:46,163 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,163 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,163 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,163 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,164 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,164 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,164 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,165 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,165 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,165 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,165 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,165 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,165 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,165 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,165 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,166 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,166 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,166 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,166 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,167 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,167 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,167 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,167 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,167 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,167 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,167 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,167 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,168 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,168 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,169 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,169 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,169 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,169 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,173 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,173 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,173 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,173 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,174 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,175 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,175 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,175 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-07-13 18:50:46,176 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-07-13 18:50:46,191 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-07-13 18:50:46,203 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-13 18:50:46,204 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-13 18:50:46,204 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-13 18:50:46,204 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-13 18:50:46,204 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-13 18:50:46,204 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-13 18:50:46,204 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-13 18:50:46,204 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-13 18:50:46,221 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-07-13 18:50:46,392 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:46,409 INFO L276 IsEmpty]: Start isEmpty. Operand has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:46,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-07-13 18:50:46,434 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:50:46,434 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:50:46,435 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:50:46,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:50:46,441 INFO L82 PathProgramCache]: Analyzing trace with hash 663437649, now seen corresponding path program 1 times [2021-07-13 18:50:46,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:50:46,446 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572923273] [2021-07-13 18:50:46,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:50:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:50:46,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:50:46,786 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:50:46,786 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572923273] [2021-07-13 18:50:46,786 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572923273] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:50:46,787 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:50:46,787 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:50:46,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562904723] [2021-07-13 18:50:46,790 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:50:46,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:50:46,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:50:46,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:50:46,825 INFO L87 Difference]: Start difference. First operand has 5559 states, 5558 states have (on average 3.4938826916156893) internal successors, (19419), 5558 states have internal predecessors, (19419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:47,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:50:47,125 INFO L93 Difference]: Finished difference Result 10372 states and 34960 transitions. [2021-07-13 18:50:47,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:50:47,127 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-07-13 18:50:47,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:50:47,218 INFO L225 Difference]: With dead ends: 10372 [2021-07-13 18:50:47,218 INFO L226 Difference]: Without dead ends: 7210 [2021-07-13 18:50:47,219 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 159.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:50:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7210 states. [2021-07-13 18:50:47,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7210 to 6088. [2021-07-13 18:50:47,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6088 states, 6087 states have (on average 3.36602595695745) internal successors, (20489), 6087 states have internal predecessors, (20489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6088 states to 6088 states and 20489 transitions. [2021-07-13 18:50:47,504 INFO L78 Accepts]: Start accepts. Automaton has 6088 states and 20489 transitions. Word has length 49 [2021-07-13 18:50:47,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:50:47,507 INFO L482 AbstractCegarLoop]: Abstraction has 6088 states and 20489 transitions. [2021-07-13 18:50:47,508 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:47,508 INFO L276 IsEmpty]: Start isEmpty. Operand 6088 states and 20489 transitions. [2021-07-13 18:50:47,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-07-13 18:50:47,525 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:50:47,525 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:50:47,525 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-13 18:50:47,526 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:50:47,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:50:47,529 INFO L82 PathProgramCache]: Analyzing trace with hash 1824129874, now seen corresponding path program 1 times [2021-07-13 18:50:47,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:50:47,529 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477747815] [2021-07-13 18:50:47,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:50:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:50:47,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:50:47,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:50:47,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477747815] [2021-07-13 18:50:47,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477747815] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:50:47,640 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:50:47,640 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:50:47,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243869735] [2021-07-13 18:50:47,642 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:50:47,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:50:47,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:50:47,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:50:47,644 INFO L87 Difference]: Start difference. First operand 6088 states and 20489 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:47,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:50:47,798 INFO L93 Difference]: Finished difference Result 6648 states and 22222 transitions. [2021-07-13 18:50:47,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:50:47,799 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-07-13 18:50:47,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:50:47,828 INFO L225 Difference]: With dead ends: 6648 [2021-07-13 18:50:47,828 INFO L226 Difference]: Without dead ends: 5668 [2021-07-13 18:50:47,830 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 120.0ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:50:47,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5668 states. [2021-07-13 18:50:47,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5668 to 5208. [2021-07-13 18:50:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5208 states, 5207 states have (on average 3.360860380257346) internal successors, (17500), 5207 states have internal predecessors, (17500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:47,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5208 states to 5208 states and 17500 transitions. [2021-07-13 18:50:47,997 INFO L78 Accepts]: Start accepts. Automaton has 5208 states and 17500 transitions. Word has length 51 [2021-07-13 18:50:47,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:50:47,998 INFO L482 AbstractCegarLoop]: Abstraction has 5208 states and 17500 transitions. [2021-07-13 18:50:47,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:47,998 INFO L276 IsEmpty]: Start isEmpty. Operand 5208 states and 17500 transitions. [2021-07-13 18:50:48,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-07-13 18:50:48,010 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:50:48,010 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:50:48,010 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-13 18:50:48,010 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:50:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:50:48,016 INFO L82 PathProgramCache]: Analyzing trace with hash 2138163718, now seen corresponding path program 1 times [2021-07-13 18:50:48,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:50:48,017 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127763347] [2021-07-13 18:50:48,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:50:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:50:48,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:50:48,152 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:50:48,152 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127763347] [2021-07-13 18:50:48,152 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127763347] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:50:48,153 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:50:48,153 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:50:48,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881868616] [2021-07-13 18:50:48,153 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:50:48,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:50:48,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:50:48,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:50:48,154 INFO L87 Difference]: Start difference. First operand 5208 states and 17500 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:48,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:50:48,353 INFO L93 Difference]: Finished difference Result 6818 states and 22792 transitions. [2021-07-13 18:50:48,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 18:50:48,354 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-07-13 18:50:48,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:50:48,382 INFO L225 Difference]: With dead ends: 6818 [2021-07-13 18:50:48,382 INFO L226 Difference]: Without dead ends: 3270 [2021-07-13 18:50:48,383 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 160.2ms TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:50:48,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2021-07-13 18:50:48,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 3270. [2021-07-13 18:50:48,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3270 states, 3269 states have (on average 3.241358213520954) internal successors, (10596), 3269 states have internal predecessors, (10596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:48,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3270 states to 3270 states and 10596 transitions. [2021-07-13 18:50:48,468 INFO L78 Accepts]: Start accepts. Automaton has 3270 states and 10596 transitions. Word has length 52 [2021-07-13 18:50:48,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:50:48,469 INFO L482 AbstractCegarLoop]: Abstraction has 3270 states and 10596 transitions. [2021-07-13 18:50:48,469 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 3270 states and 10596 transitions. [2021-07-13 18:50:48,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-07-13 18:50:48,476 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:50:48,477 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:50:48,477 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-07-13 18:50:48,477 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:50:48,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:50:48,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1066159869, now seen corresponding path program 1 times [2021-07-13 18:50:48,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:50:48,478 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260725734] [2021-07-13 18:50:48,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:50:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:50:48,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:50:48,565 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:50:48,565 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260725734] [2021-07-13 18:50:48,566 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260725734] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:50:48,566 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:50:48,566 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:50:48,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574557685] [2021-07-13 18:50:48,566 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:50:48,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:50:48,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:50:48,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:50:48,570 INFO L87 Difference]: Start difference. First operand 3270 states and 10596 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:48,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:50:48,730 INFO L93 Difference]: Finished difference Result 3986 states and 12801 transitions. [2021-07-13 18:50:48,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 18:50:48,730 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-07-13 18:50:48,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:50:48,740 INFO L225 Difference]: With dead ends: 3986 [2021-07-13 18:50:48,740 INFO L226 Difference]: Without dead ends: 3538 [2021-07-13 18:50:48,740 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 89.8ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:50:48,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3538 states. [2021-07-13 18:50:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3538 to 3078. [2021-07-13 18:50:48,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3078 states, 3077 states have (on average 3.225219369515762) internal successors, (9924), 3077 states have internal predecessors, (9924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:48,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 9924 transitions. [2021-07-13 18:50:48,805 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 9924 transitions. Word has length 55 [2021-07-13 18:50:48,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:50:48,807 INFO L482 AbstractCegarLoop]: Abstraction has 3078 states and 9924 transitions. [2021-07-13 18:50:48,807 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:48,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 9924 transitions. [2021-07-13 18:50:48,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-07-13 18:50:48,814 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:50:48,814 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:50:48,814 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-07-13 18:50:48,815 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:50:48,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:50:48,815 INFO L82 PathProgramCache]: Analyzing trace with hash 1232463540, now seen corresponding path program 1 times [2021-07-13 18:50:48,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:50:48,816 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216078852] [2021-07-13 18:50:48,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:50:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:50:48,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:50:48,890 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:50:48,891 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216078852] [2021-07-13 18:50:48,891 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216078852] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:50:48,891 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:50:48,891 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:50:48,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643528739] [2021-07-13 18:50:48,892 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:50:48,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:50:48,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:50:48,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:50:48,893 INFO L87 Difference]: Start difference. First operand 3078 states and 9924 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:49,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:50:49,118 INFO L93 Difference]: Finished difference Result 5066 states and 16295 transitions. [2021-07-13 18:50:49,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-13 18:50:49,119 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-07-13 18:50:49,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:50:49,127 INFO L225 Difference]: With dead ends: 5066 [2021-07-13 18:50:49,127 INFO L226 Difference]: Without dead ends: 2926 [2021-07-13 18:50:49,127 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 170.9ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-07-13 18:50:49,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2021-07-13 18:50:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2798. [2021-07-13 18:50:49,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 2797 states have (on average 3.1555237754737218) internal successors, (8826), 2797 states have internal predecessors, (8826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 8826 transitions. [2021-07-13 18:50:49,182 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 8826 transitions. Word has length 56 [2021-07-13 18:50:49,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:50:49,182 INFO L482 AbstractCegarLoop]: Abstraction has 2798 states and 8826 transitions. [2021-07-13 18:50:49,182 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:49,183 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 8826 transitions. [2021-07-13 18:50:49,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-07-13 18:50:49,187 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:50:49,188 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:50:49,188 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-07-13 18:50:49,188 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:50:49,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:50:49,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1506580816, now seen corresponding path program 1 times [2021-07-13 18:50:49,188 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:50:49,188 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504255374] [2021-07-13 18:50:49,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:50:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:50:49,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:50:49,248 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:50:49,248 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504255374] [2021-07-13 18:50:49,248 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504255374] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:50:49,248 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:50:49,248 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-07-13 18:50:49,248 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669654782] [2021-07-13 18:50:49,248 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-13 18:50:49,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:50:49,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-13 18:50:49,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-07-13 18:50:49,249 INFO L87 Difference]: Start difference. First operand 2798 states and 8826 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:49,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:50:49,340 INFO L93 Difference]: Finished difference Result 3538 states and 11087 transitions. [2021-07-13 18:50:49,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-13 18:50:49,340 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-07-13 18:50:49,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:50:49,347 INFO L225 Difference]: With dead ends: 3538 [2021-07-13 18:50:49,347 INFO L226 Difference]: Without dead ends: 2586 [2021-07-13 18:50:49,348 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 65.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:50:49,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2586 states. [2021-07-13 18:50:49,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2586 to 2586. [2021-07-13 18:50:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 2585 states have (on average 3.1152804642166343) internal successors, (8053), 2585 states have internal predecessors, (8053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:49,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 8053 transitions. [2021-07-13 18:50:49,414 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 8053 transitions. Word has length 57 [2021-07-13 18:50:49,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:50:49,415 INFO L482 AbstractCegarLoop]: Abstraction has 2586 states and 8053 transitions. [2021-07-13 18:50:49,415 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:49,415 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 8053 transitions. [2021-07-13 18:50:49,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-07-13 18:50:49,420 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:50:49,420 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:50:49,420 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-07-13 18:50:49,420 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:50:49,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:50:49,421 INFO L82 PathProgramCache]: Analyzing trace with hash -208209097, now seen corresponding path program 1 times [2021-07-13 18:50:49,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:50:49,421 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761638289] [2021-07-13 18:50:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:50:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:50:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:50:49,483 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:50:49,483 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761638289] [2021-07-13 18:50:49,483 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761638289] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:50:49,483 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:50:49,483 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:50:49,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097075586] [2021-07-13 18:50:49,484 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:50:49,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:50:49,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:50:49,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:50:49,484 INFO L87 Difference]: Start difference. First operand 2586 states and 8053 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:49,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:50:49,598 INFO L93 Difference]: Finished difference Result 2838 states and 8707 transitions. [2021-07-13 18:50:49,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-13 18:50:49,599 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-07-13 18:50:49,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:50:49,604 INFO L225 Difference]: With dead ends: 2838 [2021-07-13 18:50:49,604 INFO L226 Difference]: Without dead ends: 2046 [2021-07-13 18:50:49,604 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 89.9ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-07-13 18:50:49,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2046 states. [2021-07-13 18:50:49,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2046 to 2046. [2021-07-13 18:50:49,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 2045 states have (on average 3.0136919315403423) internal successors, (6163), 2045 states have internal predecessors, (6163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:49,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 6163 transitions. [2021-07-13 18:50:49,638 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 6163 transitions. Word has length 58 [2021-07-13 18:50:49,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:50:49,638 INFO L482 AbstractCegarLoop]: Abstraction has 2046 states and 6163 transitions. [2021-07-13 18:50:49,638 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:49,639 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 6163 transitions. [2021-07-13 18:50:49,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-07-13 18:50:49,642 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:50:49,642 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:50:49,642 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-07-13 18:50:49,642 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:50:49,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:50:49,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1700256690, now seen corresponding path program 1 times [2021-07-13 18:50:49,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:50:49,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109803064] [2021-07-13 18:50:49,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:50:49,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:50:49,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:50:49,709 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:50:49,709 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109803064] [2021-07-13 18:50:49,709 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109803064] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:50:49,709 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:50:49,710 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:50:49,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210368369] [2021-07-13 18:50:49,710 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:50:49,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:50:49,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:50:49,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:50:49,711 INFO L87 Difference]: Start difference. First operand 2046 states and 6163 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:49,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:50:49,809 INFO L93 Difference]: Finished difference Result 1857 states and 5470 transitions. [2021-07-13 18:50:49,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-13 18:50:49,810 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-07-13 18:50:49,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:50:49,813 INFO L225 Difference]: With dead ends: 1857 [2021-07-13 18:50:49,813 INFO L226 Difference]: Without dead ends: 1425 [2021-07-13 18:50:49,813 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 78.0ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-07-13 18:50:49,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2021-07-13 18:50:49,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1425. [2021-07-13 18:50:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1424 states have (on average 2.874297752808989) internal successors, (4093), 1424 states have internal predecessors, (4093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:49,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 4093 transitions. [2021-07-13 18:50:49,854 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 4093 transitions. Word has length 59 [2021-07-13 18:50:49,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:50:49,854 INFO L482 AbstractCegarLoop]: Abstraction has 1425 states and 4093 transitions. [2021-07-13 18:50:49,854 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:49,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 4093 transitions. [2021-07-13 18:50:49,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-13 18:50:49,857 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:50:49,857 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:50:49,857 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-07-13 18:50:49,857 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:50:49,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:50:49,858 INFO L82 PathProgramCache]: Analyzing trace with hash 49969175, now seen corresponding path program 1 times [2021-07-13 18:50:49,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:50:49,858 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094351083] [2021-07-13 18:50:49,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:50:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:50:49,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:50:49,926 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:50:49,926 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094351083] [2021-07-13 18:50:49,926 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094351083] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:50:49,926 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:50:49,926 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-07-13 18:50:49,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443328193] [2021-07-13 18:50:49,926 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-13 18:50:49,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:50:49,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-13 18:50:49,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-07-13 18:50:49,927 INFO L87 Difference]: Start difference. First operand 1425 states and 4093 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:50,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:50:50,003 INFO L93 Difference]: Finished difference Result 2168 states and 6265 transitions. [2021-07-13 18:50:50,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 18:50:50,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-07-13 18:50:50,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:50:50,006 INFO L225 Difference]: With dead ends: 2168 [2021-07-13 18:50:50,006 INFO L226 Difference]: Without dead ends: 1050 [2021-07-13 18:50:50,006 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.0ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-07-13 18:50:50,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2021-07-13 18:50:50,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1050. [2021-07-13 18:50:50,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 1049 states have (on average 2.8045757864632983) internal successors, (2942), 1049 states have internal predecessors, (2942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:50,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 2942 transitions. [2021-07-13 18:50:50,024 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 2942 transitions. Word has length 61 [2021-07-13 18:50:50,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:50:50,024 INFO L482 AbstractCegarLoop]: Abstraction has 1050 states and 2942 transitions. [2021-07-13 18:50:50,024 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:50,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 2942 transitions. [2021-07-13 18:50:50,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-07-13 18:50:50,026 INFO L500 BasicCegarLoop]: Found error trace [2021-07-13 18:50:50,026 INFO L508 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-07-13 18:50:50,026 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-07-13 18:50:50,026 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-07-13 18:50:50,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-13 18:50:50,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1343548209, now seen corresponding path program 2 times [2021-07-13 18:50:50,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-13 18:50:50,027 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169931231] [2021-07-13 18:50:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-13 18:50:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-13 18:50:50,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-13 18:50:50,102 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-13 18:50:50,102 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169931231] [2021-07-13 18:50:50,102 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169931231] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-13 18:50:50,102 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-13 18:50:50,102 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-07-13 18:50:50,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987240850] [2021-07-13 18:50:50,102 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-13 18:50:50,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-13 18:50:50,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-13 18:50:50,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-07-13 18:50:50,103 INFO L87 Difference]: Start difference. First operand 1050 states and 2942 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:50,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-07-13 18:50:50,153 INFO L93 Difference]: Finished difference Result 996 states and 2780 transitions. [2021-07-13 18:50:50,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-13 18:50:50,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2021-07-13 18:50:50,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-07-13 18:50:50,153 INFO L225 Difference]: With dead ends: 996 [2021-07-13 18:50:50,153 INFO L226 Difference]: Without dead ends: 0 [2021-07-13 18:50:50,154 INFO L764 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 70.3ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-07-13 18:50:50,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-07-13 18:50:50,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-07-13 18:50:50,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:50,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-07-13 18:50:50,154 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-07-13 18:50:50,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-07-13 18:50:50,154 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-07-13 18:50:50,154 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-13 18:50:50,154 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-07-13 18:50:50,155 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-07-13 18:50:50,155 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-07-13 18:50:50,156 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-13 18:50:50,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 06:50:50 BasicIcfg [2021-07-13 18:50:50,158 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-13 18:50:50,158 INFO L168 Benchmark]: Toolchain (without parser) took 4852.70 ms. Allocated memory was 194.0 MB in the beginning and 697.3 MB in the end (delta: 503.3 MB). Free memory was 157.0 MB in the beginning and 471.1 MB in the end (delta: -314.2 MB). Peak memory consumption was 190.2 MB. Max. memory is 8.0 GB. [2021-07-13 18:50:50,159 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 194.0 MB. Free memory is still 175.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 18:50:50,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.07 ms. Allocated memory is still 194.0 MB. Free memory was 156.8 MB in the beginning and 167.9 MB in the end (delta: -11.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. [2021-07-13 18:50:50,159 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.86 ms. Allocated memory is still 194.0 MB. Free memory was 167.9 MB in the beginning and 166.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-13 18:50:50,159 INFO L168 Benchmark]: Boogie Preprocessor took 25.72 ms. Allocated memory is still 194.0 MB. Free memory was 166.1 MB in the beginning and 164.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-13 18:50:50,159 INFO L168 Benchmark]: RCFGBuilder took 423.90 ms. Allocated memory is still 194.0 MB. Free memory was 164.7 MB in the beginning and 141.3 MB in the end (delta: 23.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. [2021-07-13 18:50:50,159 INFO L168 Benchmark]: TraceAbstraction took 4021.75 ms. Allocated memory was 194.0 MB in the beginning and 697.3 MB in the end (delta: 503.3 MB). Free memory was 140.6 MB in the beginning and 471.1 MB in the end (delta: -330.5 MB). Peak memory consumption was 173.8 MB. Max. memory is 8.0 GB. [2021-07-13 18:50:50,160 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 194.0 MB. Free memory is still 175.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 330.07 ms. Allocated memory is still 194.0 MB. Free memory was 156.8 MB in the beginning and 167.9 MB in the end (delta: -11.0 MB). Peak memory consumption was 12.2 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 46.86 ms. Allocated memory is still 194.0 MB. Free memory was 167.9 MB in the beginning and 166.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.72 ms. Allocated memory is still 194.0 MB. Free memory was 166.1 MB in the beginning and 164.7 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 423.90 ms. Allocated memory is still 194.0 MB. Free memory was 164.7 MB in the beginning and 141.3 MB in the end (delta: 23.4 MB). Peak memory consumption was 25.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4021.75 ms. Allocated memory was 194.0 MB in the beginning and 697.3 MB in the end (delta: 503.3 MB). Free memory was 140.6 MB in the beginning and 471.1 MB in the end (delta: -330.5 MB). Peak memory consumption was 173.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3953.3ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 100.4ms, AutomataDifference: 1706.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 187.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1077 SDtfs, 1524 SDslu, 3607 SDs, 0 SdLazy, 402 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 246.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 132 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1080.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=6088occurred in iteration=1, InterpolantAutomatonStates: 100, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 804.7ms AutomataMinimizationTime, 10 MinimizatonAttempts, 2170 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 31.3ms SsaConstructionTime, 167.4ms SatisfiabilityAnalysisTime, 782.0ms InterpolantComputationTime, 559 NumberOfCodeBlocks, 559 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 549 ConstructedInterpolants, 0 QuantifiedInterpolants, 2289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...