/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Delay.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 15:47:17,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 15:47:17,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 15:47:17,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-16 15:47:17,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-16 15:47:17,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-16 15:47:17,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-16 15:47:17,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-16 15:47:17,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-16 15:47:17,156 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-16 15:47:17,157 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-16 15:47:17,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-16 15:47:17,159 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-16 15:47:17,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-16 15:47:17,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-16 15:47:17,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-16 15:47:17,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-16 15:47:17,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-16 15:47:17,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-16 15:47:17,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-16 15:47:17,191 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-16 15:47:17,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-16 15:47:17,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-16 15:47:17,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-16 15:47:17,196 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-16 15:47:17,196 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-16 15:47:17,197 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-16 15:47:17,198 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-16 15:47:17,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-16 15:47:17,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2021-06-16 15:47:17,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-16 15:47:17,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-16 15:47:17,209 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-16 15:47:17,213 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-Delay.epf [2021-06-16 15:47:17,250 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 15:47:17,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 15:47:17,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 15:47:17,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 15:47:17,252 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 15:47:17,252 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 15:47:17,252 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 15:47:17,253 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 15:47:17,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 15:47:17,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 15:47:17,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 15:47:17,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 15:47:17,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 15:47:17,253 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 15:47:17,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 15:47:17,254 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 15:47:17,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 15:47:17,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 15:47:17,254 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 15:47:17,254 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 15:47:17,254 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 15:47:17,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 15:47:17,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 15:47:17,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 15:47:17,255 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 15:47:17,255 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 15:47:17,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 15:47:17,256 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 15:47:17,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 15:47:17,256 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-16 15:47:17,256 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 15:47:17,586 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 15:47:17,604 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 15:47:17,606 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 15:47:17,607 INFO L271 PluginConnector]: Initializing CDTParser... [2021-06-16 15:47:17,608 INFO L275 PluginConnector]: CDTParser initialized [2021-06-16 15:47:17,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2021-06-16 15:47:17,665 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67f03152f/7fb34acf6b9f45308a7e8df96907608c/FLAGe172ac692 [2021-06-16 15:47:18,077 INFO L306 CDTParser]: Found 1 translation units. [2021-06-16 15:47:18,077 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe015_pso.oepc.i [2021-06-16 15:47:18,105 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67f03152f/7fb34acf6b9f45308a7e8df96907608c/FLAGe172ac692 [2021-06-16 15:47:18,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67f03152f/7fb34acf6b9f45308a7e8df96907608c [2021-06-16 15:47:18,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 15:47:18,459 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-06-16 15:47:18,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-06-16 15:47:18,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-06-16 15:47:18,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-06-16 15:47:18,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 03:47:18" (1/1) ... [2021-06-16 15:47:18,468 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4553dd8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:18, skipping insertion in model container [2021-06-16 15:47:18,468 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.06 03:47:18" (1/1) ... [2021-06-16 15:47:18,476 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-06-16 15:47:18,524 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-06-16 15:47:18,640 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/safe015_pso.oepc.i[950,963] [2021-06-16 15:47:18,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 15:47:18,848 INFO L203 MainTranslator]: Completed pre-run [2021-06-16 15:47:18,873 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/safe015_pso.oepc.i[950,963] [2021-06-16 15:47:18,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-06-16 15:47:18,984 INFO L208 MainTranslator]: Completed translation [2021-06-16 15:47:18,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:18 WrapperNode [2021-06-16 15:47:18,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-06-16 15:47:18,987 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 15:47:18,987 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 15:47:18,987 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 15:47:18,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:18" (1/1) ... [2021-06-16 15:47:19,023 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:18" (1/1) ... [2021-06-16 15:47:19,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 15:47:19,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 15:47:19,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 15:47:19,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 15:47:19,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:18" (1/1) ... [2021-06-16 15:47:19,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:18" (1/1) ... [2021-06-16 15:47:19,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:18" (1/1) ... [2021-06-16 15:47:19,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:18" (1/1) ... [2021-06-16 15:47:19,075 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:18" (1/1) ... [2021-06-16 15:47:19,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:18" (1/1) ... [2021-06-16 15:47:19,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:18" (1/1) ... [2021-06-16 15:47:19,091 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 15:47:19,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 15:47:19,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 15:47:19,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 15:47:19,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:18" (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 [2021-06-16 15:47:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-06-16 15:47:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-06-16 15:47:19,178 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-06-16 15:47:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-06-16 15:47:19,179 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-06-16 15:47:19,179 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-06-16 15:47:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-06-16 15:47:19,180 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-06-16 15:47:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-06-16 15:47:19,180 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-06-16 15:47:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-06-16 15:47:19,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-06-16 15:47:19,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 15:47:19,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 15:47:19,182 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 15:47:19,642 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 15:47:19,642 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-06-16 15:47:19,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 03:47:19 BoogieIcfgContainer [2021-06-16 15:47:19,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 15:47:19,647 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 15:47:19,647 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 15:47:19,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 15:47:19,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.06 03:47:18" (1/3) ... [2021-06-16 15:47:19,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f997de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 03:47:19, skipping insertion in model container [2021-06-16 15:47:19,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.06 03:47:18" (2/3) ... [2021-06-16 15:47:19,652 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f997de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 03:47:19, skipping insertion in model container [2021-06-16 15:47:19,652 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 03:47:19" (3/3) ... [2021-06-16 15:47:19,653 INFO L111 eAbstractionObserver]: Analyzing ICFG safe015_pso.oepc.i [2021-06-16 15:47:19,661 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 15:47:19,662 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 15:47:19,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 15:47:19,662 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 15:47:19,697 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,698 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,698 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,698 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,698 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,698 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,699 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,699 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,699 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,700 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,700 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,700 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,701 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,702 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,702 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,702 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,702 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,706 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,706 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,706 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,707 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,713 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,713 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,713 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,713 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,714 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,714 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,714 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,714 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,715 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,715 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,715 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,715 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,717 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,718 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,718 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,722 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,723 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,723 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,723 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,725 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,725 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,725 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,725 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-16 15:47:19,730 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-16 15:47:19,749 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-16 15:47:19,766 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 15:47:19,766 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 15:47:19,766 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 15:47:19,766 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 15:47:19,766 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 15:47:19,766 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 15:47:19,766 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 15:47:19,766 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 15:47:20,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 9331 states, 8009 states have (on average 2.3436134348857536) internal successors, (18770), 9330 states have internal predecessors, (18770), 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) [2021-06-16 15:47:20,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-06-16 15:47:20,935 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:20,936 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:20,936 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:20,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:20,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1572123417, now seen corresponding path program 1 times [2021-06-16 15:47:20,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:20,948 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681398573] [2021-06-16 15:47:20,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:21,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:21,326 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:21,327 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:21,333 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-16 15:47:21,334 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 15:47:21,352 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:21,353 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:21,372 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:21,372 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:21,382 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:21,383 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:21,396 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:21,396 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:21,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:21,399 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:21,399 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681398573] [2021-06-16 15:47:21,399 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681398573] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:21,399 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:21,400 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:47:21,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681690377] [2021-06-16 15:47:21,402 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:47:21,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:21,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:47:21,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:47:21,434 INFO L87 Difference]: Start difference. First operand has 9331 states, 8009 states have (on average 2.3436134348857536) internal successors, (18770), 9330 states have internal predecessors, (18770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:21,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:21,925 INFO L93 Difference]: Finished difference Result 20671 states and 43041 transitions. [2021-06-16 15:47:21,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:47:21,927 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-06-16 15:47:21,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:21,959 INFO L225 Difference]: With dead ends: 20671 [2021-06-16 15:47:21,960 INFO L226 Difference]: Without dead ends: 3853 [2021-06-16 15:47:21,961 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 195.3ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:47:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2021-06-16 15:47:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 2960. [2021-06-16 15:47:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2960 states, 2911 states have (on average 2.236001374098248) internal successors, (6509), 2959 states have internal predecessors, (6509), 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) [2021-06-16 15:47:22,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2960 states to 2960 states and 6509 transitions. [2021-06-16 15:47:22,156 INFO L78 Accepts]: Start accepts. Automaton has 2960 states and 6509 transitions. Word has length 48 [2021-06-16 15:47:22,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:22,156 INFO L482 AbstractCegarLoop]: Abstraction has 2960 states and 6509 transitions. [2021-06-16 15:47:22,157 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:22,157 INFO L276 IsEmpty]: Start isEmpty. Operand 2960 states and 6509 transitions. [2021-06-16 15:47:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-16 15:47:22,163 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:22,164 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:22,164 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 15:47:22,164 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:22,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:22,167 INFO L82 PathProgramCache]: Analyzing trace with hash 32416858, now seen corresponding path program 1 times [2021-06-16 15:47:22,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:22,168 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447306104] [2021-06-16 15:47:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:22,313 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:22,313 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:22,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:22,315 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:22,321 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:22,322 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:22,343 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:22,345 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:22,356 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:22,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:22,368 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:22,369 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:22,370 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:22,370 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447306104] [2021-06-16 15:47:22,370 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447306104] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:22,370 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:22,370 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:47:22,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810937285] [2021-06-16 15:47:22,380 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:47:22,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:22,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:47:22,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:47:22,382 INFO L87 Difference]: Start difference. First operand 2960 states and 6509 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:22,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:22,542 INFO L93 Difference]: Finished difference Result 3396 states and 7746 transitions. [2021-06-16 15:47:22,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:47:22,542 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-16 15:47:22,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:22,553 INFO L225 Difference]: With dead ends: 3396 [2021-06-16 15:47:22,553 INFO L226 Difference]: Without dead ends: 2460 [2021-06-16 15:47:22,554 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 110.5ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:47:22,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2460 states. [2021-06-16 15:47:22,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2460 to 2459. [2021-06-16 15:47:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2459 states, 2424 states have (on average 2.2330858085808583) internal successors, (5413), 2458 states have internal predecessors, (5413), 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) [2021-06-16 15:47:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 5413 transitions. [2021-06-16 15:47:22,618 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 5413 transitions. Word has length 50 [2021-06-16 15:47:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:22,619 INFO L482 AbstractCegarLoop]: Abstraction has 2459 states and 5413 transitions. [2021-06-16 15:47:22,619 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:22,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 5413 transitions. [2021-06-16 15:47:22,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-06-16 15:47:22,624 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:22,624 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:22,624 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-16 15:47:22,624 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:22,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:22,624 INFO L82 PathProgramCache]: Analyzing trace with hash 925473976, now seen corresponding path program 1 times [2021-06-16 15:47:22,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:22,625 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051096254] [2021-06-16 15:47:22,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:22,731 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:22,732 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:22,733 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:22,733 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:22,744 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-16 15:47:22,746 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 15:47:22,762 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:22,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:22,790 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:22,792 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:22,804 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:22,805 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:22,816 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:22,816 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:22,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:22,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:22,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051096254] [2021-06-16 15:47:22,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051096254] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:22,818 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:22,818 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:47:22,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375464461] [2021-06-16 15:47:22,818 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:47:22,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:22,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:47:22,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:47:22,819 INFO L87 Difference]: Start difference. First operand 2459 states and 5413 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:23,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:23,072 INFO L93 Difference]: Finished difference Result 3834 states and 9033 transitions. [2021-06-16 15:47:23,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 15:47:23,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-06-16 15:47:23,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:23,086 INFO L225 Difference]: With dead ends: 3834 [2021-06-16 15:47:23,086 INFO L226 Difference]: Without dead ends: 2668 [2021-06-16 15:47:23,087 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 197.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-16 15:47:23,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2668 states. [2021-06-16 15:47:23,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2668 to 1979. [2021-06-16 15:47:23,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1979 states, 1954 states have (on average 2.2318321392016376) internal successors, (4361), 1978 states have internal predecessors, (4361), 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) [2021-06-16 15:47:23,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1979 states to 1979 states and 4361 transitions. [2021-06-16 15:47:23,160 INFO L78 Accepts]: Start accepts. Automaton has 1979 states and 4361 transitions. Word has length 50 [2021-06-16 15:47:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:23,162 INFO L482 AbstractCegarLoop]: Abstraction has 1979 states and 4361 transitions. [2021-06-16 15:47:23,162 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 1979 states and 4361 transitions. [2021-06-16 15:47:23,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-06-16 15:47:23,166 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:23,166 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:23,166 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-16 15:47:23,167 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:23,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:23,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1729191335, now seen corresponding path program 1 times [2021-06-16 15:47:23,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:23,169 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325413962] [2021-06-16 15:47:23,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:23,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:23,258 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:23,259 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:23,259 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:23,265 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:23,273 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-16 15:47:23,277 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 15:47:23,316 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:23,320 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:23,357 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:23,358 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:23,367 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:23,368 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:23,379 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:23,379 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:23,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:23,380 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:23,380 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325413962] [2021-06-16 15:47:23,380 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325413962] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:23,380 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:23,380 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:47:23,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891985084] [2021-06-16 15:47:23,381 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:47:23,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:23,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:47:23,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:47:23,382 INFO L87 Difference]: Start difference. First operand 1979 states and 4361 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) [2021-06-16 15:47:23,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:23,636 INFO L93 Difference]: Finished difference Result 2644 states and 6337 transitions. [2021-06-16 15:47:23,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 15:47:23,637 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 [2021-06-16 15:47:23,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:23,647 INFO L225 Difference]: With dead ends: 2644 [2021-06-16 15:47:23,648 INFO L226 Difference]: Without dead ends: 2180 [2021-06-16 15:47:23,648 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 259.2ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-16 15:47:23,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2180 states. [2021-06-16 15:47:23,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2180 to 1595. [2021-06-16 15:47:23,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1595 states, 1570 states have (on average 2.226751592356688) internal successors, (3496), 1594 states have internal predecessors, (3496), 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) [2021-06-16 15:47:23,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1595 states to 1595 states and 3496 transitions. [2021-06-16 15:47:23,704 INFO L78 Accepts]: Start accepts. Automaton has 1595 states and 3496 transitions. Word has length 53 [2021-06-16 15:47:23,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:23,705 INFO L482 AbstractCegarLoop]: Abstraction has 1595 states and 3496 transitions. [2021-06-16 15:47:23,705 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) [2021-06-16 15:47:23,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1595 states and 3496 transitions. [2021-06-16 15:47:23,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-06-16 15:47:23,709 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:23,709 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:23,709 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-16 15:47:23,709 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:23,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:23,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1898309126, now seen corresponding path program 1 times [2021-06-16 15:47:23,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:23,710 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784239248] [2021-06-16 15:47:23,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:23,784 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:23,785 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:23,786 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:23,786 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:23,797 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-16 15:47:23,798 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 15:47:23,811 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:23,813 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:23,831 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:23,831 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:23,841 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:23,842 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:23,855 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:23,856 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:23,858 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:23,858 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784239248] [2021-06-16 15:47:23,858 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784239248] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:23,858 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:23,858 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:47:23,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483086510] [2021-06-16 15:47:23,859 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:47:23,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:23,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:47:23,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:47:23,860 INFO L87 Difference]: Start difference. First operand 1595 states and 3496 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) [2021-06-16 15:47:24,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:24,095 INFO L93 Difference]: Finished difference Result 2601 states and 6183 transitions. [2021-06-16 15:47:24,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-16 15:47:24,096 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 [2021-06-16 15:47:24,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:24,106 INFO L225 Difference]: With dead ends: 2601 [2021-06-16 15:47:24,106 INFO L226 Difference]: Without dead ends: 2071 [2021-06-16 15:47:24,107 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 189.9ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-06-16 15:47:24,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2071 states. [2021-06-16 15:47:24,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2071 to 1468. [2021-06-16 15:47:24,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1468 states, 1448 states have (on average 2.1519337016574585) internal successors, (3116), 1467 states have internal predecessors, (3116), 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) [2021-06-16 15:47:24,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1468 states to 1468 states and 3116 transitions. [2021-06-16 15:47:24,146 INFO L78 Accepts]: Start accepts. Automaton has 1468 states and 3116 transitions. Word has length 54 [2021-06-16 15:47:24,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:24,147 INFO L482 AbstractCegarLoop]: Abstraction has 1468 states and 3116 transitions. [2021-06-16 15:47:24,147 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) [2021-06-16 15:47:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand 1468 states and 3116 transitions. [2021-06-16 15:47:24,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-06-16 15:47:24,150 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:24,151 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:24,151 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-16 15:47:24,151 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:24,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:24,151 INFO L82 PathProgramCache]: Analyzing trace with hash 650830696, now seen corresponding path program 1 times [2021-06-16 15:47:24,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:24,152 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901515686] [2021-06-16 15:47:24,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:24,211 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,212 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:24,213 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,214 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:24,218 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:47:24,220 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:47:24,236 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,238 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:47:24,248 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:47:24,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:24,257 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,258 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:24,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:24,260 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901515686] [2021-06-16 15:47:24,260 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901515686] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:24,260 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:24,260 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-06-16 15:47:24,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254637343] [2021-06-16 15:47:24,263 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-16 15:47:24,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:24,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-16 15:47:24,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-16 15:47:24,265 INFO L87 Difference]: Start difference. First operand 1468 states and 3116 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:24,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:24,370 INFO L93 Difference]: Finished difference Result 1840 states and 3831 transitions. [2021-06-16 15:47:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:47:24,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-06-16 15:47:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:24,375 INFO L225 Difference]: With dead ends: 1840 [2021-06-16 15:47:24,375 INFO L226 Difference]: Without dead ends: 1264 [2021-06-16 15:47:24,376 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 88.1ms TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:47:24,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2021-06-16 15:47:24,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1264. [2021-06-16 15:47:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1244 states have (on average 2.1663987138263665) internal successors, (2695), 1263 states have internal predecessors, (2695), 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) [2021-06-16 15:47:24,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2695 transitions. [2021-06-16 15:47:24,399 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2695 transitions. Word has length 55 [2021-06-16 15:47:24,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:24,399 INFO L482 AbstractCegarLoop]: Abstraction has 1264 states and 2695 transitions. [2021-06-16 15:47:24,399 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:24,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2695 transitions. [2021-06-16 15:47:24,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-06-16 15:47:24,404 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:24,404 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:24,404 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-16 15:47:24,404 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:24,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:24,404 INFO L82 PathProgramCache]: Analyzing trace with hash 37304699, now seen corresponding path program 1 times [2021-06-16 15:47:24,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:24,405 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982396905] [2021-06-16 15:47:24,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:24,464 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,464 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:24,465 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,467 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:24,470 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,470 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:24,474 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:47:24,475 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:47:24,490 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:47:24,499 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:47:24,499 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:24,507 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,508 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:24,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:24,508 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:24,508 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982396905] [2021-06-16 15:47:24,509 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982396905] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:24,509 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:24,509 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:47:24,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872295470] [2021-06-16 15:47:24,509 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:47:24,509 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:24,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:47:24,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:47:24,510 INFO L87 Difference]: Start difference. First operand 1264 states and 2695 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:24,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:24,629 INFO L93 Difference]: Finished difference Result 1234 states and 2477 transitions. [2021-06-16 15:47:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-06-16 15:47:24,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-06-16 15:47:24,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:24,633 INFO L225 Difference]: With dead ends: 1234 [2021-06-16 15:47:24,633 INFO L226 Difference]: Without dead ends: 765 [2021-06-16 15:47:24,636 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 100.0ms TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-06-16 15:47:24,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2021-06-16 15:47:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 765. [2021-06-16 15:47:24,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 747 states have (on average 2.0508701472556896) internal successors, (1532), 764 states have internal predecessors, (1532), 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) [2021-06-16 15:47:24,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1532 transitions. [2021-06-16 15:47:24,650 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1532 transitions. Word has length 56 [2021-06-16 15:47:24,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:24,651 INFO L482 AbstractCegarLoop]: Abstraction has 765 states and 1532 transitions. [2021-06-16 15:47:24,651 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-16 15:47:24,652 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1532 transitions. [2021-06-16 15:47:24,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-06-16 15:47:24,653 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:24,653 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:24,653 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-06-16 15:47:24,653 INFO L430 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:24,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:24,654 INFO L82 PathProgramCache]: Analyzing trace with hash 1253907476, now seen corresponding path program 1 times [2021-06-16 15:47:24,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:24,655 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844113820] [2021-06-16 15:47:24,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:24,706 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,707 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:24,707 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,708 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:24,710 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,711 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:24,714 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,715 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:24,720 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-06-16 15:47:24,721 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-06-16 15:47:24,736 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,737 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-06-16 15:47:24,747 INFO L142 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-06-16 15:47:24,748 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:24,757 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,758 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:24,758 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:24,759 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844113820] [2021-06-16 15:47:24,759 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844113820] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:24,759 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:24,759 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 15:47:24,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180423838] [2021-06-16 15:47:24,760 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 15:47:24,760 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:24,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 15:47:24,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-06-16 15:47:24,760 INFO L87 Difference]: Start difference. First operand 765 states and 1532 transitions. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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) [2021-06-16 15:47:24,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:24,899 INFO L93 Difference]: Finished difference Result 576 states and 988 transitions. [2021-06-16 15:47:24,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-06-16 15:47:24,900 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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 [2021-06-16 15:47:24,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:24,901 INFO L225 Difference]: With dead ends: 576 [2021-06-16 15:47:24,901 INFO L226 Difference]: Without dead ends: 302 [2021-06-16 15:47:24,902 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 126.5ms TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2021-06-16 15:47:24,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-06-16 15:47:24,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2021-06-16 15:47:24,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 293 states have (on average 1.6143344709897611) internal successors, (473), 301 states have internal predecessors, (473), 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) [2021-06-16 15:47:24,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 473 transitions. [2021-06-16 15:47:24,907 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 473 transitions. Word has length 58 [2021-06-16 15:47:24,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:24,907 INFO L482 AbstractCegarLoop]: Abstraction has 302 states and 473 transitions. [2021-06-16 15:47:24,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 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) [2021-06-16 15:47:24,908 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 473 transitions. [2021-06-16 15:47:24,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-16 15:47:24,908 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:24,909 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:24,909 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-16 15:47:24,909 INFO L430 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:24,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:24,909 INFO L82 PathProgramCache]: Analyzing trace with hash -304498795, now seen corresponding path program 1 times [2021-06-16 15:47:24,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:24,909 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812805883] [2021-06-16 15:47:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:24,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,942 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:24,942 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,943 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:24,945 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,946 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:24,951 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-16 15:47:24,951 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 15:47:24,963 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:24,964 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:24,980 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,980 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:24,991 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:24,991 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:25,001 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:25,001 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:25,002 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:25,002 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812805883] [2021-06-16 15:47:25,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812805883] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:25,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:25,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 15:47:25,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809737918] [2021-06-16 15:47:25,002 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 15:47:25,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:25,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 15:47:25,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-16 15:47:25,003 INFO L87 Difference]: Start difference. First operand 302 states and 473 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2021-06-16 15:47:25,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:25,085 INFO L93 Difference]: Finished difference Result 437 states and 733 transitions. [2021-06-16 15:47:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:47:25,086 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 60 [2021-06-16 15:47:25,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:25,087 INFO L225 Difference]: With dead ends: 437 [2021-06-16 15:47:25,087 INFO L226 Difference]: Without dead ends: 289 [2021-06-16 15:47:25,087 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 86.1ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-16 15:47:25,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2021-06-16 15:47:25,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 288. [2021-06-16 15:47:25,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 279 states have (on average 1.6236559139784945) internal successors, (453), 287 states have internal predecessors, (453), 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) [2021-06-16 15:47:25,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 453 transitions. [2021-06-16 15:47:25,092 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 453 transitions. Word has length 60 [2021-06-16 15:47:25,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:25,093 INFO L482 AbstractCegarLoop]: Abstraction has 288 states and 453 transitions. [2021-06-16 15:47:25,093 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2021-06-16 15:47:25,093 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 453 transitions. [2021-06-16 15:47:25,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-16 15:47:25,094 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:25,094 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:25,094 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-06-16 15:47:25,094 INFO L430 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:25,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:25,094 INFO L82 PathProgramCache]: Analyzing trace with hash 1869786791, now seen corresponding path program 2 times [2021-06-16 15:47:25,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:25,095 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078121445] [2021-06-16 15:47:25,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:25,144 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:25,144 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:25,145 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:25,147 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:25,150 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:25,150 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:25,156 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:25,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:25,174 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:25,176 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:25,184 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:25,185 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:25,195 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:25,196 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:25,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:25,196 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:25,196 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078121445] [2021-06-16 15:47:25,196 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078121445] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:25,197 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:25,197 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-06-16 15:47:25,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392784941] [2021-06-16 15:47:25,197 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-16 15:47:25,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:25,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-16 15:47:25,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-06-16 15:47:25,198 INFO L87 Difference]: Start difference. First operand 288 states and 453 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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) [2021-06-16 15:47:25,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:25,263 INFO L93 Difference]: Finished difference Result 402 states and 689 transitions. [2021-06-16 15:47:25,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-06-16 15:47:25,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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 60 [2021-06-16 15:47:25,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:25,264 INFO L225 Difference]: With dead ends: 402 [2021-06-16 15:47:25,264 INFO L226 Difference]: Without dead ends: 236 [2021-06-16 15:47:25,265 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 79.4ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-06-16 15:47:25,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2021-06-16 15:47:25,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2021-06-16 15:47:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 227 states have (on average 1.7092511013215859) internal successors, (388), 235 states have internal predecessors, (388), 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) [2021-06-16 15:47:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 388 transitions. [2021-06-16 15:47:25,271 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 388 transitions. Word has length 60 [2021-06-16 15:47:25,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:25,271 INFO L482 AbstractCegarLoop]: Abstraction has 236 states and 388 transitions. [2021-06-16 15:47:25,271 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 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) [2021-06-16 15:47:25,271 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 388 transitions. [2021-06-16 15:47:25,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-06-16 15:47:25,272 INFO L464 BasicCegarLoop]: Found error trace [2021-06-16 15:47:25,272 INFO L472 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-16 15:47:25,272 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-06-16 15:47:25,272 INFO L430 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-06-16 15:47:25,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 15:47:25,272 INFO L82 PathProgramCache]: Analyzing trace with hash -338112073, now seen corresponding path program 3 times [2021-06-16 15:47:25,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 15:47:25,273 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885124775] [2021-06-16 15:47:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 15:47:25,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 15:47:25,304 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:25,304 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:25,305 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:25,305 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:25,308 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:25,308 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-06-16 15:47:25,316 INFO L142 QuantifierPusher]: treesize reduction 3, result has 85.0 percent of original size [2021-06-16 15:47:25,317 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-06-16 15:47:25,327 INFO L142 QuantifierPusher]: treesize reduction 1, result has 95.0 percent of original size [2021-06-16 15:47:25,328 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-06-16 15:47:25,345 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:25,346 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:25,354 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:25,355 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-06-16 15:47:25,364 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-06-16 15:47:25,364 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-06-16 15:47:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 15:47:25,365 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 15:47:25,365 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885124775] [2021-06-16 15:47:25,365 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885124775] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 15:47:25,365 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 15:47:25,365 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 15:47:25,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553633600] [2021-06-16 15:47:25,366 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-06-16 15:47:25,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 15:47:25,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-06-16 15:47:25,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-06-16 15:47:25,366 INFO L87 Difference]: Start difference. First operand 236 states and 388 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2021-06-16 15:47:25,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-16 15:47:25,431 INFO L93 Difference]: Finished difference Result 200 states and 328 transitions. [2021-06-16 15:47:25,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 15:47:25,432 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 60 [2021-06-16 15:47:25,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-16 15:47:25,432 INFO L225 Difference]: With dead ends: 200 [2021-06-16 15:47:25,432 INFO L226 Difference]: Without dead ends: 0 [2021-06-16 15:47:25,432 INFO L728 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 90.0ms TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-06-16 15:47:25,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-16 15:47:25,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-16 15:47:25,433 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) [2021-06-16 15:47:25,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-16 15:47:25,433 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2021-06-16 15:47:25,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-16 15:47:25,433 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-16 15:47:25,433 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2021-06-16 15:47:25,433 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-16 15:47:25,433 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-16 15:47:25,433 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-06-16 15:47:25,435 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 15:47:25,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 03:47:25 BasicIcfg [2021-06-16 15:47:25,437 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 15:47:25,437 INFO L168 Benchmark]: Toolchain (without parser) took 6978.08 ms. Allocated memory was 195.0 MB in the beginning and 470.8 MB in the end (delta: 275.8 MB). Free memory was 158.5 MB in the beginning and 301.3 MB in the end (delta: -142.8 MB). Peak memory consumption was 133.5 MB. Max. memory is 8.0 GB. [2021-06-16 15:47:25,438 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 195.0 MB. Free memory is still 176.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 15:47:25,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 525.28 ms. Allocated memory is still 195.0 MB. Free memory was 158.3 MB in the beginning and 157.6 MB in the end (delta: 706.5 kB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. [2021-06-16 15:47:25,438 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.66 ms. Allocated memory is still 195.0 MB. Free memory was 157.6 MB in the beginning and 155.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:47:25,438 INFO L168 Benchmark]: Boogie Preprocessor took 44.86 ms. Allocated memory is still 195.0 MB. Free memory was 155.5 MB in the beginning and 154.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:47:25,439 INFO L168 Benchmark]: RCFGBuilder took 553.68 ms. Allocated memory is still 195.0 MB. Free memory was 154.3 MB in the beginning and 130.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-06-16 15:47:25,439 INFO L168 Benchmark]: TraceAbstraction took 5790.30 ms. Allocated memory was 195.0 MB in the beginning and 470.8 MB in the end (delta: 275.8 MB). Free memory was 130.4 MB in the beginning and 301.3 MB in the end (delta: -170.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 8.0 GB. [2021-06-16 15:47:25,440 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 195.0 MB. Free memory is still 176.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 525.28 ms. Allocated memory is still 195.0 MB. Free memory was 158.3 MB in the beginning and 157.6 MB in the end (delta: 706.5 kB). Peak memory consumption was 13.9 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 58.66 ms. Allocated memory is still 195.0 MB. Free memory was 157.6 MB in the beginning and 155.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.86 ms. Allocated memory is still 195.0 MB. Free memory was 155.5 MB in the beginning and 154.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 553.68 ms. Allocated memory is still 195.0 MB. Free memory was 154.3 MB in the beginning and 130.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5790.30 ms. Allocated memory was 195.0 MB in the beginning and 470.8 MB in the end (delta: 275.8 MB). Free memory was 130.4 MB in the beginning and 301.3 MB in the end (delta: -170.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 33832, positive: 32283, positive conditional: 32283, positive unconditional: 0, negative: 1549, negative conditional: 1549, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 33323, positive: 32283, positive conditional: 0, positive unconditional: 32283, negative: 1040, negative conditional: 0, negative unconditional: 1040, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 891, positive: 870, positive conditional: 0, positive unconditional: 870, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 891, positive: 866, positive conditional: 0, positive unconditional: 866, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 21, negative conditional: 0, negative unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 82, positive: 18, positive conditional: 0, positive unconditional: 18, negative: 64, negative conditional: 0, negative unconditional: 64, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 33323, positive: 31413, positive conditional: 0, positive unconditional: 31413, negative: 1019, negative conditional: 0, negative unconditional: 1019, unknown: 891, unknown conditional: 0, unknown unconditional: 891] , Statistics on independence cache: Total cache size (in pairs): 891, Positive cache size: 870, Positive conditional cache size: 0, Positive unconditional cache size: 870, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Independence queries for same thread: 509 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 7 procedures, 106 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5670.5ms, OverallIterations: 11, TraceHistogramMax: 1, EmptinessCheckTime: 78.8ms, AutomataDifference: 2111.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 1118.1ms, PartialOrderReductionTime: 1106.7ms, HoareTripleCheckerStatistics: 1045 SDtfs, 1432 SDslu, 3598 SDs, 0 SdLazy, 498 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 421.2ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1523.4ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=9331occurred in iteration=0, InterpolantAutomatonStates: 112, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 468.1ms AutomataMinimizationTime, 11 MinimizatonAttempts, 2772 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 51.6ms SsaConstructionTime, 263.8ms SatisfiabilityAnalysisTime, 1361.0ms InterpolantComputationTime, 604 NumberOfCodeBlocks, 604 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 593 ConstructedInterpolants, 0 QuantifiedInterpolants, 2637 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 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...