/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-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 10:06:52,341 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 10:06:52,343 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 10:06:52,371 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 10:06:52,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-05 10:06:52,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-05 10:06:52,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-05 10:06:52,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-05 10:06:52,389 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-05 10:06:52,390 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-05 10:06:52,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-05 10:06:52,391 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-05 10:06:52,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-05 10:06:52,393 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-05 10:06:52,393 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-05 10:06:52,394 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-05 10:06:52,395 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-05 10:06:52,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-05 10:06:52,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-05 10:06:52,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-05 10:06:52,401 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-Separate.epf [2021-06-05 10:06:52,414 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 10:06:52,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 10:06:52,414 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 10:06:52,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 10:06:52,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 10:06:52,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 10:06:52,415 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 10:06:52,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 10:06:52,415 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 10:06:52,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 10:06:52,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 10:06:52,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 10:06:52,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 10:06:52,416 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 10:06:52,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 10:06:52,416 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 10:06:52,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 10:06:52,416 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 10:06:52,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 10:06:52,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 10:06:52,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 10:06:52,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 10:06:52,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 10:06:52,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 10:06:52,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 10:06:52,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 10:06:52,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 10:06:52,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 10:06:52,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 10:06:52,417 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 10:06:52,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 10:06:52,417 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 10:06:52,418 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 10:06:52,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 10:06:52,672 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 10:06:52,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 10:06:52,675 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-05 10:06:52,681 INFO L275 PluginConnector]: CDTParser initialized [2021-06-05 10:06:52,681 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2021-06-05 10:06:52,724 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1c37dc2a/1e9d86272f8b4e2db9072747c6302d2b/FLAGfd1eabd2f [2021-06-05 10:06:53,146 INFO L306 CDTParser]: Found 1 translation units. [2021-06-05 10:06:53,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i [2021-06-05 10:06:53,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1c37dc2a/1e9d86272f8b4e2db9072747c6302d2b/FLAGfd1eabd2f [2021-06-05 10:06:53,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b1c37dc2a/1e9d86272f8b4e2db9072747c6302d2b [2021-06-05 10:06:53,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 10:06:53,535 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-05 10:06:53,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-05 10:06:53,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-05 10:06:53,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-05 10:06:53,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:06:53" (1/1) ... [2021-06-05 10:06:53,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@711b05c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:06:53, skipping insertion in model container [2021-06-05 10:06:53,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.06 10:06:53" (1/1) ... [2021-06-05 10:06:53,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-05 10:06:53,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-05 10:06:53,675 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i[949,962] [2021-06-05 10:06:53,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:06:53,822 INFO L203 MainTranslator]: Completed pre-run [2021-06-05 10:06:53,829 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_tso.opt.i[949,962] [2021-06-05 10:06:53,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-05 10:06:53,883 INFO L208 MainTranslator]: Completed translation [2021-06-05 10:06:53,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:06:53 WrapperNode [2021-06-05 10:06:53,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-05 10:06:53,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 10:06:53,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 10:06:53,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 10:06:53,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:06:53" (1/1) ... [2021-06-05 10:06:53,898 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:06:53" (1/1) ... [2021-06-05 10:06:53,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 10:06:53,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 10:06:53,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 10:06:53,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 10:06:53,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:06:53" (1/1) ... [2021-06-05 10:06:53,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:06:53" (1/1) ... [2021-06-05 10:06:53,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:06:53" (1/1) ... [2021-06-05 10:06:53,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:06:53" (1/1) ... [2021-06-05 10:06:53,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:06:53" (1/1) ... [2021-06-05 10:06:53,926 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:06:53" (1/1) ... [2021-06-05 10:06:53,927 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:06:53" (1/1) ... [2021-06-05 10:06:53,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 10:06:53,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 10:06:53,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 10:06:53,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 10:06:53,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:06:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 10:06:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-05 10:06:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-05 10:06:54,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-05 10:06:54,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-05 10:06:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-05 10:06:54,024 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-05 10:06:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-05 10:06:54,024 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-05 10:06:54,024 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-05 10:06:54,024 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-05 10:06:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-05 10:06:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-05 10:06:54,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 10:06:54,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 10:06:54,026 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 10:06:54,310 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 10:06:54,310 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-05 10:06:54,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:06:54 BoogieIcfgContainer [2021-06-05 10:06:54,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 10:06:54,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 10:06:54,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 10:06:54,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 10:06:54,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.06 10:06:53" (1/3) ... [2021-06-05 10:06:54,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3b09ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:06:54, skipping insertion in model container [2021-06-05 10:06:54,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.06 10:06:53" (2/3) ... [2021-06-05 10:06:54,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3b09ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 10:06:54, skipping insertion in model container [2021-06-05 10:06:54,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 10:06:54" (3/3) ... [2021-06-05 10:06:54,317 INFO L111 eAbstractionObserver]: Analyzing ICFG safe014_tso.opt.i [2021-06-05 10:06:54,321 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 10:06:54,321 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 10:06:54,321 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 10:06:54,321 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 10:06:54,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,339 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,339 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,339 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,340 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,340 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,340 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,341 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,341 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,341 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,341 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,341 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,342 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,342 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,342 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,342 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,343 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,343 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,343 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,343 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,344 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,345 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,345 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,345 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,348 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,349 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,349 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,349 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,350 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,350 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,350 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 10:06:54,351 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 10:06:54,366 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 10:06:54,378 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 10:06:54,378 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 10:06:54,378 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 10:06:54,378 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 10:06:54,378 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 10:06:54,378 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 10:06:54,378 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 10:06:54,379 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 10:06:54,385 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 92 places, 84 transitions, 183 flow [2021-06-05 10:06:54,743 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:54,779 INFO L276 IsEmpty]: Start isEmpty. Operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:54,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-06-05 10:06:54,805 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:06:54,806 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] [2021-06-05 10:06:54,806 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:06:54,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:06:54,813 INFO L82 PathProgramCache]: Analyzing trace with hash 663437649, now seen corresponding path program 1 times [2021-06-05 10:06:54,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:06:54,819 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201892392] [2021-06-05 10:06:54,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:06:54,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:06:55,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:06:55,135 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:06:55,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201892392] [2021-06-05 10:06:55,136 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201892392] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:06:55,136 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:06:55,136 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:06:55,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529240170] [2021-06-05 10:06:55,139 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:06:55,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:06:55,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:06:55,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:06:55,171 INFO L87 Difference]: Start difference. First operand has 9332 states, 9330 states have (on average 3.562379421221865) internal successors, (33237), 9331 states have internal predecessors, (33237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:55,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:06:55,642 INFO L93 Difference]: Finished difference Result 18268 states and 62923 transitions. [2021-06-05 10:06:55,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 10:06:55,643 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2021-06-05 10:06:55,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:06:55,693 INFO L225 Difference]: With dead ends: 18268 [2021-06-05 10:06:55,694 INFO L226 Difference]: Without dead ends: 6158 [2021-06-05 10:06:55,695 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 198.4ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:06:55,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6158 states. [2021-06-05 10:06:55,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6158 to 5228. [2021-06-05 10:06:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5228 states, 5227 states have (on average 3.365601683566099) internal successors, (17592), 5227 states have internal predecessors, (17592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:56,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5228 states to 5228 states and 17592 transitions. [2021-06-05 10:06:56,016 INFO L78 Accepts]: Start accepts. Automaton has 5228 states and 17592 transitions. Word has length 49 [2021-06-05 10:06:56,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:06:56,019 INFO L482 AbstractCegarLoop]: Abstraction has 5228 states and 17592 transitions. [2021-06-05 10:06:56,019 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 5228 states and 17592 transitions. [2021-06-05 10:06:56,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-06-05 10:06:56,035 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:06:56,035 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] [2021-06-05 10:06:56,036 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 10:06:56,036 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:06:56,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:06:56,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1915177392, now seen corresponding path program 1 times [2021-06-05 10:06:56,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:06:56,039 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447505240] [2021-06-05 10:06:56,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:06:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:06:56,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:06:56,189 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:06:56,189 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447505240] [2021-06-05 10:06:56,189 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447505240] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:06:56,189 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:06:56,189 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 10:06:56,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866006978] [2021-06-05 10:06:56,190 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 10:06:56,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:06:56,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 10:06:56,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:06:56,193 INFO L87 Difference]: Start difference. First operand 5228 states and 17592 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) [2021-06-05 10:06:56,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:06:56,315 INFO L93 Difference]: Finished difference Result 5788 states and 19325 transitions. [2021-06-05 10:06:56,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:06:56,316 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 [2021-06-05 10:06:56,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:06:56,346 INFO L225 Difference]: With dead ends: 5788 [2021-06-05 10:06:56,346 INFO L226 Difference]: Without dead ends: 4808 [2021-06-05 10:06:56,347 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 95.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:06:56,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2021-06-05 10:06:56,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 4728. [2021-06-05 10:06:56,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4728 states, 4727 states have (on average 3.3344616035540513) internal successors, (15762), 4727 states have internal predecessors, (15762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4728 states to 4728 states and 15762 transitions. [2021-06-05 10:06:56,507 INFO L78 Accepts]: Start accepts. Automaton has 4728 states and 15762 transitions. Word has length 51 [2021-06-05 10:06:56,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:06:56,508 INFO L482 AbstractCegarLoop]: Abstraction has 4728 states and 15762 transitions. [2021-06-05 10:06:56,508 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) [2021-06-05 10:06:56,508 INFO L276 IsEmpty]: Start isEmpty. Operand 4728 states and 15762 transitions. [2021-06-05 10:06:56,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-05 10:06:56,516 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:06:56,516 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] [2021-06-05 10:06:56,516 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 10:06:56,516 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:06:56,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:06:56,517 INFO L82 PathProgramCache]: Analyzing trace with hash 104844491, now seen corresponding path program 1 times [2021-06-05 10:06:56,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:06:56,517 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091049824] [2021-06-05 10:06:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:06:56,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:06:56,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:06:56,626 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:06:56,626 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091049824] [2021-06-05 10:06:56,626 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091049824] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:06:56,626 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:06:56,626 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:06:56,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685018901] [2021-06-05 10:06:56,627 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:06:56,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:06:56,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:06:56,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:06:56,627 INFO L87 Difference]: Start difference. First operand 4728 states and 15762 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:56,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:06:56,755 INFO L93 Difference]: Finished difference Result 6370 states and 21030 transitions. [2021-06-05 10:06:56,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 10:06:56,755 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-06-05 10:06:56,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:06:56,768 INFO L225 Difference]: With dead ends: 6370 [2021-06-05 10:06:56,768 INFO L226 Difference]: Without dead ends: 2910 [2021-06-05 10:06:56,768 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 137.4ms TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-06-05 10:06:56,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2021-06-05 10:06:56,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2910. [2021-06-05 10:06:56,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2910 states, 2909 states have (on average 3.23066345823307) internal successors, (9398), 2909 states have internal predecessors, (9398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:56,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2910 states to 2910 states and 9398 transitions. [2021-06-05 10:06:56,827 INFO L78 Accepts]: Start accepts. Automaton has 2910 states and 9398 transitions. Word has length 53 [2021-06-05 10:06:56,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:06:56,827 INFO L482 AbstractCegarLoop]: Abstraction has 2910 states and 9398 transitions. [2021-06-05 10:06:56,827 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:56,827 INFO L276 IsEmpty]: Start isEmpty. Operand 2910 states and 9398 transitions. [2021-06-05 10:06:56,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-05 10:06:56,832 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:06:56,832 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] [2021-06-05 10:06:56,832 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 10:06:56,832 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:06:56,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:06:56,832 INFO L82 PathProgramCache]: Analyzing trace with hash -2103032967, now seen corresponding path program 1 times [2021-06-05 10:06:56,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:06:56,833 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298249171] [2021-06-05 10:06:56,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:06:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:06:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:06:56,933 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:06:56,933 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298249171] [2021-06-05 10:06:56,933 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298249171] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:06:56,933 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:06:56,933 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:06:56,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080066242] [2021-06-05 10:06:56,933 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:06:56,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:06:56,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:06:56,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:06:56,934 INFO L87 Difference]: Start difference. First operand 2910 states and 9398 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) [2021-06-05 10:06:57,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:06:57,115 INFO L93 Difference]: Finished difference Result 3950 states and 12592 transitions. [2021-06-05 10:06:57,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-05 10:06:57,116 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 [2021-06-05 10:06:57,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:06:57,134 INFO L225 Difference]: With dead ends: 3950 [2021-06-05 10:06:57,134 INFO L226 Difference]: Without dead ends: 3134 [2021-06-05 10:06:57,135 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 165.3ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:06:57,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2021-06-05 10:06:57,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2670. [2021-06-05 10:06:57,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2669 states have (on average 3.2139378044211315) internal successors, (8578), 2669 states have internal predecessors, (8578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:57,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 8578 transitions. [2021-06-05 10:06:57,199 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 8578 transitions. Word has length 54 [2021-06-05 10:06:57,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:06:57,200 INFO L482 AbstractCegarLoop]: Abstraction has 2670 states and 8578 transitions. [2021-06-05 10:06:57,200 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) [2021-06-05 10:06:57,200 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 8578 transitions. [2021-06-05 10:06:57,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-05 10:06:57,205 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:06:57,206 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] [2021-06-05 10:06:57,209 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 10:06:57,209 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:06:57,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:06:57,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1497416024, now seen corresponding path program 1 times [2021-06-05 10:06:57,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:06:57,211 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291914742] [2021-06-05 10:06:57,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:06:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:06:57,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:06:57,307 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:06:57,308 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291914742] [2021-06-05 10:06:57,308 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291914742] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:06:57,308 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:06:57,308 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 10:06:57,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648701199] [2021-06-05 10:06:57,309 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 10:06:57,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:06:57,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 10:06:57,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:06:57,311 INFO L87 Difference]: Start difference. First operand 2670 states and 8578 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:57,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:06:57,413 INFO L93 Difference]: Finished difference Result 2950 states and 9412 transitions. [2021-06-05 10:06:57,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:06:57,414 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-06-05 10:06:57,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:06:57,421 INFO L225 Difference]: With dead ends: 2950 [2021-06-05 10:06:57,421 INFO L226 Difference]: Without dead ends: 2550 [2021-06-05 10:06:57,440 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 84.4ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:06:57,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2550 states. [2021-06-05 10:06:57,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2550 to 2518. [2021-06-05 10:06:57,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2517 states have (on average 3.199046483909416) internal successors, (8052), 2517 states have internal predecessors, (8052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:57,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 8052 transitions. [2021-06-05 10:06:57,480 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 8052 transitions. Word has length 56 [2021-06-05 10:06:57,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:06:57,480 INFO L482 AbstractCegarLoop]: Abstraction has 2518 states and 8052 transitions. [2021-06-05 10:06:57,480 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 8052 transitions. [2021-06-05 10:06:57,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-06-05 10:06:57,484 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:06:57,485 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] [2021-06-05 10:06:57,485 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 10:06:57,485 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:06:57,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:06:57,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1506580816, now seen corresponding path program 1 times [2021-06-05 10:06:57,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:06:57,485 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119904605] [2021-06-05 10:06:57,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:06:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:06:57,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:06:57,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:06:57,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119904605] [2021-06-05 10:06:57,539 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119904605] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:06:57,539 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:06:57,539 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-05 10:06:57,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399688510] [2021-06-05 10:06:57,539 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-05 10:06:57,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:06:57,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-05 10:06:57,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-05 10:06:57,540 INFO L87 Difference]: Start difference. First operand 2518 states and 8052 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:57,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:06:57,624 INFO L93 Difference]: Finished difference Result 3258 states and 10287 transitions. [2021-06-05 10:06:57,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:06:57,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-06-05 10:06:57,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:06:57,630 INFO L225 Difference]: With dead ends: 3258 [2021-06-05 10:06:57,630 INFO L226 Difference]: Without dead ends: 2306 [2021-06-05 10:06:57,630 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 61.6ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-05 10:06:57,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2306 states. [2021-06-05 10:06:57,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2306 to 2306. [2021-06-05 10:06:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2306 states, 2305 states have (on average 3.1535791757049894) internal successors, (7269), 2305 states have internal predecessors, (7269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2306 states to 2306 states and 7269 transitions. [2021-06-05 10:06:57,669 INFO L78 Accepts]: Start accepts. Automaton has 2306 states and 7269 transitions. Word has length 57 [2021-06-05 10:06:57,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:06:57,669 INFO L482 AbstractCegarLoop]: Abstraction has 2306 states and 7269 transitions. [2021-06-05 10:06:57,669 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:57,669 INFO L276 IsEmpty]: Start isEmpty. Operand 2306 states and 7269 transitions. [2021-06-05 10:06:57,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-05 10:06:57,673 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:06:57,673 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] [2021-06-05 10:06:57,673 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 10:06:57,673 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:06:57,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:06:57,674 INFO L82 PathProgramCache]: Analyzing trace with hash -208209097, now seen corresponding path program 1 times [2021-06-05 10:06:57,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:06:57,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044109949] [2021-06-05 10:06:57,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:06:57,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:06:57,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:06:57,734 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:06:57,736 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044109949] [2021-06-05 10:06:57,736 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044109949] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:06:57,736 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:06:57,736 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-05 10:06:57,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471539758] [2021-06-05 10:06:57,736 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-05 10:06:57,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:06:57,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-05 10:06:57,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-05 10:06:57,737 INFO L87 Difference]: Start difference. First operand 2306 states and 7269 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:57,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:06:57,838 INFO L93 Difference]: Finished difference Result 2558 states and 7884 transitions. [2021-06-05 10:06:57,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-05 10:06:57,838 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-06-05 10:06:57,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:06:57,842 INFO L225 Difference]: With dead ends: 2558 [2021-06-05 10:06:57,843 INFO L226 Difference]: Without dead ends: 1766 [2021-06-05 10:06:57,843 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 77.2ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-05 10:06:57,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1766 states. [2021-06-05 10:06:57,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1766 to 1766. [2021-06-05 10:06:57,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1766 states, 1765 states have (on average 3.0390934844192636) internal successors, (5364), 1765 states have internal predecessors, (5364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:57,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1766 states to 1766 states and 5364 transitions. [2021-06-05 10:06:57,876 INFO L78 Accepts]: Start accepts. Automaton has 1766 states and 5364 transitions. Word has length 58 [2021-06-05 10:06:57,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:06:57,876 INFO L482 AbstractCegarLoop]: Abstraction has 1766 states and 5364 transitions. [2021-06-05 10:06:57,876 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 7 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:57,876 INFO L276 IsEmpty]: Start isEmpty. Operand 1766 states and 5364 transitions. [2021-06-05 10:06:57,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-06-05 10:06:57,893 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:06:57,893 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, 1] [2021-06-05 10:06:57,893 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-05 10:06:57,893 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:06:57,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:06:57,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1710207794, now seen corresponding path program 1 times [2021-06-05 10:06:57,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:06:57,894 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156517082] [2021-06-05 10:06:57,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:06:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:06:57,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:06:57,957 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:06:57,958 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156517082] [2021-06-05 10:06:57,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156517082] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:06:57,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:06:57,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:06:57,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291472438] [2021-06-05 10:06:57,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:06:57,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:06:57,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:06:57,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:06:57,959 INFO L87 Difference]: Start difference. First operand 1766 states and 5364 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:58,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:06:58,062 INFO L93 Difference]: Finished difference Result 1577 states and 4680 transitions. [2021-06-05 10:06:58,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-05 10:06:58,063 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2021-06-05 10:06:58,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:06:58,065 INFO L225 Difference]: With dead ends: 1577 [2021-06-05 10:06:58,065 INFO L226 Difference]: Without dead ends: 873 [2021-06-05 10:06:58,065 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 83.7ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-05 10:06:58,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-06-05 10:06:58,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 873. [2021-06-05 10:06:58,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 872 states have (on average 2.897935779816514) internal successors, (2527), 872 states have internal predecessors, (2527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:58,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 2527 transitions. [2021-06-05 10:06:58,077 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 2527 transitions. Word has length 59 [2021-06-05 10:06:58,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:06:58,077 INFO L482 AbstractCegarLoop]: Abstraction has 873 states and 2527 transitions. [2021-06-05 10:06:58,077 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:58,077 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 2527 transitions. [2021-06-05 10:06:58,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 10:06:58,078 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:06:58,079 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, 1, 1, 1] [2021-06-05 10:06:58,079 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 10:06:58,079 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:06:58,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:06:58,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1185234251, now seen corresponding path program 1 times [2021-06-05 10:06:58,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:06:58,080 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033894991] [2021-06-05 10:06:58,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:06:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:06:58,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:06:58,175 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:06:58,175 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033894991] [2021-06-05 10:06:58,175 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033894991] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:06:58,175 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:06:58,175 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:06:58,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324666985] [2021-06-05 10:06:58,176 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:06:58,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:06:58,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:06:58,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:06:58,177 INFO L87 Difference]: Start difference. First operand 873 states and 2527 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) [2021-06-05 10:06:58,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:06:58,237 INFO L93 Difference]: Finished difference Result 1356 states and 3968 transitions. [2021-06-05 10:06:58,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-05 10:06:58,237 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 [2021-06-05 10:06:58,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:06:58,239 INFO L225 Difference]: With dead ends: 1356 [2021-06-05 10:06:58,239 INFO L226 Difference]: Without dead ends: 805 [2021-06-05 10:06:58,240 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 65.7ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-05 10:06:58,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2021-06-05 10:06:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2021-06-05 10:06:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 804 states have (on average 2.8756218905472637) internal successors, (2312), 804 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 2312 transitions. [2021-06-05 10:06:58,251 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 2312 transitions. Word has length 61 [2021-06-05 10:06:58,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:06:58,251 INFO L482 AbstractCegarLoop]: Abstraction has 805 states and 2312 transitions. [2021-06-05 10:06:58,251 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) [2021-06-05 10:06:58,251 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 2312 transitions. [2021-06-05 10:06:58,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-06-05 10:06:58,252 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 10:06:58,252 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, 1, 1, 1] [2021-06-05 10:06:58,253 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-05 10:06:58,253 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-05 10:06:58,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 10:06:58,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1305686019, now seen corresponding path program 2 times [2021-06-05 10:06:58,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 10:06:58,255 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860015499] [2021-06-05 10:06:58,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 10:06:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 10:06:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 10:06:58,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 10:06:58,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860015499] [2021-06-05 10:06:58,356 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860015499] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 10:06:58,356 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 10:06:58,356 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-05 10:06:58,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157981685] [2021-06-05 10:06:58,356 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-05 10:06:58,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 10:06:58,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-05 10:06:58,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-05 10:06:58,357 INFO L87 Difference]: Start difference. First operand 805 states and 2312 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) [2021-06-05 10:06:58,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 10:06:58,405 INFO L93 Difference]: Finished difference Result 751 states and 2150 transitions. [2021-06-05 10:06:58,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-05 10:06:58,405 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 [2021-06-05 10:06:58,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 10:06:58,405 INFO L225 Difference]: With dead ends: 751 [2021-06-05 10:06:58,405 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 10:06:58,406 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 64.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-05 10:06:58,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 10:06:58,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 10:06:58,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-05 10:06:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 10:06:58,407 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2021-06-05 10:06:58,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 10:06:58,407 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 10:06:58,407 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) [2021-06-05 10:06:58,407 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 10:06:58,407 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 10:06:58,407 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-05 10:06:58,409 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-05 10:06:58,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 10:06:58 BasicIcfg [2021-06-05 10:06:58,410 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 10:06:58,412 INFO L168 Benchmark]: Toolchain (without parser) took 4876.40 ms. Allocated memory was 341.8 MB in the beginning and 836.8 MB in the end (delta: 494.9 MB). Free memory was 304.5 MB in the beginning and 568.1 MB in the end (delta: -263.6 MB). Peak memory consumption was 233.4 MB. Max. memory is 16.0 GB. [2021-06-05 10:06:58,412 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 341.8 MB. Free memory was 322.6 MB in the beginning and 322.5 MB in the end (delta: 70.5 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:06:58,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 348.48 ms. Allocated memory is still 341.8 MB. Free memory was 304.3 MB in the beginning and 304.2 MB in the end (delta: 45.5 kB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. [2021-06-05 10:06:58,413 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.06 ms. Allocated memory is still 341.8 MB. Free memory was 304.2 MB in the beginning and 302.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 10:06:58,413 INFO L168 Benchmark]: Boogie Preprocessor took 18.57 ms. Allocated memory is still 341.8 MB. Free memory was 302.1 MB in the beginning and 301.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 10:06:58,413 INFO L168 Benchmark]: RCFGBuilder took 382.65 ms. Allocated memory is still 341.8 MB. Free memory was 301.1 MB in the beginning and 277.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. [2021-06-05 10:06:58,414 INFO L168 Benchmark]: TraceAbstraction took 4097.54 ms. Allocated memory was 341.8 MB in the beginning and 836.8 MB in the end (delta: 494.9 MB). Free memory was 275.9 MB in the beginning and 568.1 MB in the end (delta: -292.1 MB). Peak memory consumption was 204.9 MB. Max. memory is 16.0 GB. [2021-06-05 10:06:58,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 341.8 MB. Free memory was 322.6 MB in the beginning and 322.5 MB in the end (delta: 70.5 kB). There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 348.48 ms. Allocated memory is still 341.8 MB. Free memory was 304.3 MB in the beginning and 304.2 MB in the end (delta: 45.5 kB). Peak memory consumption was 6.8 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 25.06 ms. Allocated memory is still 341.8 MB. Free memory was 304.2 MB in the beginning and 302.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 18.57 ms. Allocated memory is still 341.8 MB. Free memory was 302.1 MB in the beginning and 301.1 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 382.65 ms. Allocated memory is still 341.8 MB. Free memory was 301.1 MB in the beginning and 277.0 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.0 GB. * TraceAbstraction took 4097.54 ms. Allocated memory was 341.8 MB in the beginning and 836.8 MB in the end (delta: 494.9 MB). Free memory was 275.9 MB in the beginning and 568.1 MB in the end (delta: -292.1 MB). Peak memory consumption was 204.9 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, 107 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4031.4ms, OverallIterations: 10, TraceHistogramMax: 1, EmptinessCheckTime: 120.8ms, AutomataDifference: 1600.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 364.4ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1041 SDtfs, 1557 SDslu, 3537 SDs, 0 SdLazy, 426 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 282.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1033.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9332occurred in iteration=0, InterpolantAutomatonStates: 101, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 729.6ms AutomataMinimizationTime, 10 MinimizatonAttempts, 1506 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 28.5ms SsaConstructionTime, 182.0ms SatisfiabilityAnalysisTime, 831.7ms InterpolantComputationTime, 559 NumberOfCodeBlocks, 559 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 549 ConstructedInterpolants, 0 QuantifiedInterpolants, 2169 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...