/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/thin001_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-770125f [2021-05-21 17:27:48,629 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-21 17:27:48,631 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-21 17:27:48,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-21 17:27:48,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-21 17:27:48,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-21 17:27:48,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-21 17:27:48,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-21 17:27:48,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-21 17:27:48,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-21 17:27:48,684 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-21 17:27:48,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-21 17:27:48,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-21 17:27:48,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-21 17:27:48,693 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-21 17:27:48,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-21 17:27:48,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-21 17:27:48,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-21 17:27:48,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-21 17:27:48,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-21 17:27:48,714 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 [2021-05-21 17:27:48,743 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-21 17:27:48,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-21 17:27:48,743 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-05-21 17:27:48,743 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-05-21 17:27:48,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-21 17:27:48,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-21 17:27:48,745 INFO L138 SettingsManager]: * Use SBE=true [2021-05-21 17:27:48,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-21 17:27:48,745 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-21 17:27:48,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-21 17:27:48,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-21 17:27:48,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-21 17:27:48,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-21 17:27:48,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-21 17:27:48,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-21 17:27:48,746 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-21 17:27:48,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-21 17:27:48,746 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-21 17:27:48,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-21 17:27:48,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-21 17:27:48,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-21 17:27:48,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-21 17:27:48,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-21 17:27:48,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-21 17:27:48,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-21 17:27:48,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-21 17:27:48,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-21 17:27:48,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-21 17:27:48,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-21 17:27:48,747 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-05-21 17:27:48,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-21 17:27:48,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-21 17:27:49,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-21 17:27:49,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-21 17:27:49,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-21 17:27:49,060 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-21 17:27:49,060 INFO L275 PluginConnector]: CDTParser initialized [2021-05-21 17:27:49,061 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/thin001_tso.opt.i [2021-05-21 17:27:49,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7435f391/56b4e4f368844c41822dff8e8a8e677c/FLAGb450fd7b0 [2021-05-21 17:27:49,630 INFO L306 CDTParser]: Found 1 translation units. [2021-05-21 17:27:49,631 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/thin001_tso.opt.i [2021-05-21 17:27:49,654 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7435f391/56b4e4f368844c41822dff8e8a8e677c/FLAGb450fd7b0 [2021-05-21 17:27:50,095 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7435f391/56b4e4f368844c41822dff8e8a8e677c [2021-05-21 17:27:50,098 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-21 17:27:50,099 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-21 17:27:50,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-21 17:27:50,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-21 17:27:50,106 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-21 17:27:50,107 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:27:50" (1/1) ... [2021-05-21 17:27:50,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e2eeadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:50, skipping insertion in model container [2021-05-21 17:27:50,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.05 05:27:50" (1/1) ... [2021-05-21 17:27:50,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-21 17:27:50,159 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-21 17:27:50,270 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/thin001_tso.opt.i[949,962] [2021-05-21 17:27:50,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:27:50,406 INFO L203 MainTranslator]: Completed pre-run [2021-05-21 17:27:50,417 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/thin001_tso.opt.i[949,962] [2021-05-21 17:27:50,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-21 17:27:50,539 INFO L208 MainTranslator]: Completed translation [2021-05-21 17:27:50,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:50 WrapperNode [2021-05-21 17:27:50,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-21 17:27:50,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-05-21 17:27:50,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-05-21 17:27:50,541 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-05-21 17:27:50,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:50" (1/1) ... [2021-05-21 17:27:50,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:50" (1/1) ... [2021-05-21 17:27:50,597 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-05-21 17:27:50,599 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-21 17:27:50,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-21 17:27:50,599 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-21 17:27:50,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:50" (1/1) ... [2021-05-21 17:27:50,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:50" (1/1) ... [2021-05-21 17:27:50,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:50" (1/1) ... [2021-05-21 17:27:50,619 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:50" (1/1) ... [2021-05-21 17:27:50,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:50" (1/1) ... [2021-05-21 17:27:50,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:50" (1/1) ... [2021-05-21 17:27:50,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:50" (1/1) ... [2021-05-21 17:27:50,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-21 17:27:50,629 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-21 17:27:50,629 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-21 17:27:50,629 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-21 17:27:50,630 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:50" (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 [2021-05-21 17:27:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-21 17:27:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-05-21 17:27:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-21 17:27:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-21 17:27:50,713 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-05-21 17:27:50,713 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-05-21 17:27:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-05-21 17:27:50,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-05-21 17:27:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-05-21 17:27:50,714 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-05-21 17:27:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-21 17:27:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-05-21 17:27:50,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-21 17:27:50,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-21 17:27:50,716 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-05-21 17:27:51,139 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-21 17:27:51,140 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-05-21 17:27:51,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:27:51 BoogieIcfgContainer [2021-05-21 17:27:51,141 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-21 17:27:51,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-21 17:27:51,142 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-21 17:27:51,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-21 17:27:51,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.05 05:27:50" (1/3) ... [2021-05-21 17:27:51,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f32d663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:27:51, skipping insertion in model container [2021-05-21 17:27:51,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.05 05:27:50" (2/3) ... [2021-05-21 17:27:51,145 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f32d663 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.05 05:27:51, skipping insertion in model container [2021-05-21 17:27:51,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.05 05:27:51" (3/3) ... [2021-05-21 17:27:51,147 INFO L111 eAbstractionObserver]: Analyzing ICFG thin001_tso.opt.i [2021-05-21 17:27:51,152 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-05-21 17:27:51,152 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-21 17:27:51,152 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-05-21 17:27:51,153 INFO L478 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-05-21 17:27:51,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,181 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,182 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,182 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,183 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,184 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,184 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,184 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,184 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,186 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,186 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,186 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,188 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,189 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,189 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,189 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,190 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,190 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,191 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,192 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,193 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,195 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,195 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,196 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,200 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,200 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,200 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,200 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,202 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,203 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,203 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,203 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-05-21 17:27:51,206 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-05-21 17:27:51,223 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-05-21 17:27:51,237 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-05-21 17:27:51,237 INFO L379 AbstractCegarLoop]: Hoare is false [2021-05-21 17:27:51,237 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-21 17:27:51,237 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-21 17:27:51,237 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-21 17:27:51,237 INFO L383 AbstractCegarLoop]: Difference is false [2021-05-21 17:27:51,238 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-21 17:27:51,238 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-21 17:27:51,246 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 93 places, 85 transitions, 185 flow [2021-05-21 17:27:51,748 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 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) [2021-05-21 17:27:51,791 INFO L276 IsEmpty]: Start isEmpty. Operand has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 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) [2021-05-21 17:27:51,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-05-21 17:27:51,838 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:51,839 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:27:51,839 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:51,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:51,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1408065288, now seen corresponding path program 1 times [2021-05-21 17:27:51,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:51,856 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550395860] [2021-05-21 17:27:51,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:52,284 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:52,285 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550395860] [2021-05-21 17:27:52,285 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550395860] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:52,285 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:52,286 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:27:52,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195015418] [2021-05-21 17:27:52,289 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:27:52,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:52,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:27:52,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:27:52,318 INFO L87 Difference]: Start difference. First operand has 9333 states, 9331 states have (on average 3.562104811917265) internal successors, (33238), 9332 states have internal predecessors, (33238), 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 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:52,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:52,622 INFO L93 Difference]: Finished difference Result 12224 states and 42408 transitions. [2021-05-21 17:27:52,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 17:27:52,625 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-05-21 17:27:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:52,676 INFO L225 Difference]: With dead ends: 12224 [2021-05-21 17:27:52,676 INFO L226 Difference]: Without dead ends: 4629 [2021-05-21 17:27:52,678 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 163.0ms TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-05-21 17:27:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4629 states. [2021-05-21 17:27:52,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4629 to 4629. [2021-05-21 17:27:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4629 states, 4628 states have (on average 3.3854796888504755) internal successors, (15668), 4628 states have internal predecessors, (15668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:53,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 15668 transitions. [2021-05-21 17:27:53,003 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 15668 transitions. Word has length 50 [2021-05-21 17:27:53,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:53,007 INFO L482 AbstractCegarLoop]: Abstraction has 4629 states and 15668 transitions. [2021-05-21 17:27:53,007 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:53,007 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 15668 transitions. [2021-05-21 17:27:53,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-05-21 17:27:53,023 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:53,023 INFO L521 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] [2021-05-21 17:27:53,024 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-21 17:27:53,024 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:53,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:53,027 INFO L82 PathProgramCache]: Analyzing trace with hash -873664247, now seen corresponding path program 1 times [2021-05-21 17:27:53,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:53,028 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621934148] [2021-05-21 17:27:53,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:53,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:53,202 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:53,202 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621934148] [2021-05-21 17:27:53,202 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621934148] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:53,203 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:53,203 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-21 17:27:53,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91306114] [2021-05-21 17:27:53,204 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-21 17:27:53,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:53,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-21 17:27:53,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-21 17:27:53,207 INFO L87 Difference]: Start difference. First operand 4629 states and 15668 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:53,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:53,403 INFO L93 Difference]: Finished difference Result 5189 states and 17401 transitions. [2021-05-21 17:27:53,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-05-21 17:27:53,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-05-21 17:27:53,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:53,427 INFO L225 Difference]: With dead ends: 5189 [2021-05-21 17:27:53,427 INFO L226 Difference]: Without dead ends: 4209 [2021-05-21 17:27:53,428 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 142.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-05-21 17:27:53,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4209 states. [2021-05-21 17:27:53,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4209 to 4209. [2021-05-21 17:27:53,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 4208 states have (on average 3.3583650190114067) internal successors, (14132), 4208 states have internal predecessors, (14132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:53,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 14132 transitions. [2021-05-21 17:27:53,614 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 14132 transitions. Word has length 52 [2021-05-21 17:27:53,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:53,615 INFO L482 AbstractCegarLoop]: Abstraction has 4209 states and 14132 transitions. [2021-05-21 17:27:53,616 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:53,616 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 14132 transitions. [2021-05-21 17:27:53,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-21 17:27:53,626 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:53,627 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:27:53,627 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-21 17:27:53,627 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:53,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:53,631 INFO L82 PathProgramCache]: Analyzing trace with hash -504396568, now seen corresponding path program 1 times [2021-05-21 17:27:53,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:53,631 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265561581] [2021-05-21 17:27:53,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:53,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:53,799 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:53,799 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265561581] [2021-05-21 17:27:53,800 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265561581] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:53,800 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:53,800 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:27:53,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564564693] [2021-05-21 17:27:53,801 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:27:53,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:53,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:27:53,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:27:53,802 INFO L87 Difference]: Start difference. First operand 4209 states and 14132 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:54,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:54,163 INFO L93 Difference]: Finished difference Result 7384 states and 24637 transitions. [2021-05-21 17:27:54,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 17:27:54,164 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-05-21 17:27:54,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:54,220 INFO L225 Difference]: With dead ends: 7384 [2021-05-21 17:27:54,220 INFO L226 Difference]: Without dead ends: 5184 [2021-05-21 17:27:54,221 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 294.1ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:27:54,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5184 states. [2021-05-21 17:27:54,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5184 to 4784. [2021-05-21 17:27:54,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4784 states, 4783 states have (on average 3.3320091992473344) internal successors, (15937), 4783 states have internal predecessors, (15937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:54,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 15937 transitions. [2021-05-21 17:27:54,390 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 15937 transitions. Word has length 54 [2021-05-21 17:27:54,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:54,392 INFO L482 AbstractCegarLoop]: Abstraction has 4784 states and 15937 transitions. [2021-05-21 17:27:54,392 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:54,392 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 15937 transitions. [2021-05-21 17:27:54,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-05-21 17:27:54,455 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:54,455 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-21 17:27:54,455 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-21 17:27:54,455 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:54,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:54,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1424600964, now seen corresponding path program 2 times [2021-05-21 17:27:54,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:54,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831590841] [2021-05-21 17:27:54,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:54,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:54,596 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:54,596 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831590841] [2021-05-21 17:27:54,596 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831590841] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:54,596 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:54,597 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:27:54,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561343788] [2021-05-21 17:27:54,597 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:27:54,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:54,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:27:54,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:27:54,602 INFO L87 Difference]: Start difference. First operand 4784 states and 15937 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:54,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:54,901 INFO L93 Difference]: Finished difference Result 7784 states and 25782 transitions. [2021-05-21 17:27:54,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-05-21 17:27:54,905 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-05-21 17:27:54,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:54,922 INFO L225 Difference]: With dead ends: 7784 [2021-05-21 17:27:54,922 INFO L226 Difference]: Without dead ends: 5584 [2021-05-21 17:27:54,923 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 248.3ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-05-21 17:27:54,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5584 states. [2021-05-21 17:27:55,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5584 to 4609. [2021-05-21 17:27:55,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4609 states, 4608 states have (on average 3.3153211805555554) internal successors, (15277), 4608 states have internal predecessors, (15277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:55,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4609 states to 4609 states and 15277 transitions. [2021-05-21 17:27:55,058 INFO L78 Accepts]: Start accepts. Automaton has 4609 states and 15277 transitions. Word has length 54 [2021-05-21 17:27:55,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:55,059 INFO L482 AbstractCegarLoop]: Abstraction has 4609 states and 15277 transitions. [2021-05-21 17:27:55,059 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:55,059 INFO L276 IsEmpty]: Start isEmpty. Operand 4609 states and 15277 transitions. [2021-05-21 17:27:55,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-05-21 17:27:55,069 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:55,069 INFO L521 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] [2021-05-21 17:27:55,073 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-21 17:27:55,076 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:55,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:55,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1337925750, now seen corresponding path program 1 times [2021-05-21 17:27:55,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:55,078 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138741880] [2021-05-21 17:27:55,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:55,228 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:55,228 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138741880] [2021-05-21 17:27:55,229 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138741880] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:55,229 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:55,229 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 17:27:55,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434403247] [2021-05-21 17:27:55,230 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 17:27:55,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:55,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 17:27:55,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-21 17:27:55,232 INFO L87 Difference]: Start difference. First operand 4609 states and 15277 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 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) [2021-05-21 17:27:55,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:55,420 INFO L93 Difference]: Finished difference Result 5999 states and 19797 transitions. [2021-05-21 17:27:55,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 17:27:55,421 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 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 [2021-05-21 17:27:55,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:55,429 INFO L225 Difference]: With dead ends: 5999 [2021-05-21 17:27:55,429 INFO L226 Difference]: Without dead ends: 2639 [2021-05-21 17:27:55,430 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 172.8ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 17:27:55,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2021-05-21 17:27:55,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2639. [2021-05-21 17:27:55,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2639 states, 2638 states have (on average 3.2505686125852917) internal successors, (8575), 2638 states have internal predecessors, (8575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 8575 transitions. [2021-05-21 17:27:55,495 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 8575 transitions. Word has length 55 [2021-05-21 17:27:55,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:55,496 INFO L482 AbstractCegarLoop]: Abstraction has 2639 states and 8575 transitions. [2021-05-21 17:27:55,496 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 8 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) [2021-05-21 17:27:55,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 8575 transitions. [2021-05-21 17:27:55,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-05-21 17:27:55,502 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:55,502 INFO L521 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] [2021-05-21 17:27:55,502 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-05-21 17:27:55,502 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:55,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:55,503 INFO L82 PathProgramCache]: Analyzing trace with hash 822730279, now seen corresponding path program 1 times [2021-05-21 17:27:55,503 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:55,503 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615174243] [2021-05-21 17:27:55,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:55,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:55,601 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:55,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615174243] [2021-05-21 17:27:55,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615174243] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:55,602 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:55,602 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-05-21 17:27:55,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699269697] [2021-05-21 17:27:55,604 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-05-21 17:27:55,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:55,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-05-21 17:27:55,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-05-21 17:27:55,605 INFO L87 Difference]: Start difference. First operand 2639 states and 8575 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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) [2021-05-21 17:27:55,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:55,741 INFO L93 Difference]: Finished difference Result 3559 states and 11521 transitions. [2021-05-21 17:27:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-21 17:27:55,742 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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 [2021-05-21 17:27:55,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:55,747 INFO L225 Difference]: With dead ends: 3559 [2021-05-21 17:27:55,747 INFO L226 Difference]: Without dead ends: 1729 [2021-05-21 17:27:55,747 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 123.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-05-21 17:27:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1729 states. [2021-05-21 17:27:55,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1729 to 1729. [2021-05-21 17:27:55,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1729 states, 1728 states have (on average 3.1574074074074074) internal successors, (5456), 1728 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-05-21 17:27:55,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1729 states to 1729 states and 5456 transitions. [2021-05-21 17:27:55,787 INFO L78 Accepts]: Start accepts. Automaton has 1729 states and 5456 transitions. Word has length 57 [2021-05-21 17:27:55,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:55,787 INFO L482 AbstractCegarLoop]: Abstraction has 1729 states and 5456 transitions. [2021-05-21 17:27:55,787 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 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) [2021-05-21 17:27:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 1729 states and 5456 transitions. [2021-05-21 17:27:55,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-05-21 17:27:55,791 INFO L513 BasicCegarLoop]: Found error trace [2021-05-21 17:27:55,791 INFO L521 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] [2021-05-21 17:27:55,791 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-05-21 17:27:55,791 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-21 17:27:55,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-21 17:27:55,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1119585077, now seen corresponding path program 1 times [2021-05-21 17:27:55,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-21 17:27:55,792 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300958958] [2021-05-21 17:27:55,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-21 17:27:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-21 17:27:55,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-21 17:27:55,904 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-21 17:27:55,905 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300958958] [2021-05-21 17:27:55,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300958958] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-21 17:27:55,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-21 17:27:55,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-05-21 17:27:55,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504081931] [2021-05-21 17:27:55,905 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-05-21 17:27:55,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-21 17:27:55,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-05-21 17:27:55,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-05-21 17:27:55,906 INFO L87 Difference]: Start difference. First operand 1729 states and 5456 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) [2021-05-21 17:27:56,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-21 17:27:56,037 INFO L93 Difference]: Finished difference Result 1569 states and 4928 transitions. [2021-05-21 17:27:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-05-21 17:27:56,038 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 [2021-05-21 17:27:56,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-21 17:27:56,039 INFO L225 Difference]: With dead ends: 1569 [2021-05-21 17:27:56,039 INFO L226 Difference]: Without dead ends: 0 [2021-05-21 17:27:56,039 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 136.3ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-05-21 17:27:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-21 17:27:56,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-21 17:27:56,040 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) [2021-05-21 17:27:56,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-21 17:27:56,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2021-05-21 17:27:56,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-21 17:27:56,040 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-21 17:27:56,040 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) [2021-05-21 17:27:56,041 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-21 17:27:56,041 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-21 17:27:56,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-05-21 17:27:56,043 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-05-21 17:27:56,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.05 05:27:56 BasicIcfg [2021-05-21 17:27:56,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-21 17:27:56,050 INFO L168 Benchmark]: Toolchain (without parser) took 5946.34 ms. Allocated memory was 329.3 MB in the beginning and 1.3 GB in the end (delta: 931.1 MB). Free memory was 291.1 MB in the beginning and 1.1 GB in the end (delta: -810.2 MB). Peak memory consumption was 120.7 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:56,050 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 329.3 MB. Free memory was 309.4 MB in the beginning and 309.3 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-05-21 17:27:56,051 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.15 ms. Allocated memory is still 329.3 MB. Free memory was 290.9 MB in the beginning and 290.9 MB in the end (delta: 56.9 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:56,051 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.71 ms. Allocated memory is still 329.3 MB. Free memory was 290.9 MB in the beginning and 288.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:56,053 INFO L168 Benchmark]: Boogie Preprocessor took 29.92 ms. Allocated memory is still 329.3 MB. Free memory was 288.8 MB in the beginning and 287.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:56,053 INFO L168 Benchmark]: RCFGBuilder took 512.06 ms. Allocated memory is still 329.3 MB. Free memory was 287.7 MB in the beginning and 261.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:56,054 INFO L168 Benchmark]: TraceAbstraction took 4902.89 ms. Allocated memory was 329.3 MB in the beginning and 1.3 GB in the end (delta: 931.1 MB). Free memory was 261.5 MB in the beginning and 1.1 GB in the end (delta: -839.8 MB). Peak memory consumption was 94.5 MB. Max. memory is 16.0 GB. [2021-05-21 17:27:56,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 329.3 MB. Free memory was 309.4 MB in the beginning and 309.3 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 437.15 ms. Allocated memory is still 329.3 MB. Free memory was 290.9 MB in the beginning and 290.9 MB in the end (delta: 56.9 kB). Peak memory consumption was 5.2 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 56.71 ms. Allocated memory is still 329.3 MB. Free memory was 290.9 MB in the beginning and 288.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 29.92 ms. Allocated memory is still 329.3 MB. Free memory was 288.8 MB in the beginning and 287.7 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 512.06 ms. Allocated memory is still 329.3 MB. Free memory was 287.7 MB in the beginning and 261.5 MB in the end (delta: 26.2 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4902.89 ms. Allocated memory was 329.3 MB in the beginning and 1.3 GB in the end (delta: 931.1 MB). Free memory was 261.5 MB in the beginning and 1.1 GB in the end (delta: -839.8 MB). Peak memory consumption was 94.5 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4806.6ms, OverallIterations: 7, TraceHistogramMax: 1, EmptinessCheckTime: 197.4ms, AutomataDifference: 1831.1ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 510.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 789 SDtfs, 1294 SDslu, 2758 SDs, 0 SdLazy, 216 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 195.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 91 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1280.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9333occurred in iteration=0, InterpolantAutomatonStates: 84, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 910.2ms AutomataMinimizationTime, 7 MinimizatonAttempts, 1375 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.2ms SsaConstructionTime, 185.7ms SatisfiabilityAnalysisTime, 928.9ms InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 373 ConstructedInterpolants, 0 QuantifiedInterpolants, 1899 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...