./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread/triangular-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread/triangular-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 03b83410ec0d4003fbe602c21989d2443a34b0c7 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-26 00:07:27,272 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 00:07:27,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 00:07:27,312 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 00:07:27,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 00:07:27,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 00:07:27,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 00:07:27,318 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 00:07:27,321 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 00:07:27,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 00:07:27,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 00:07:27,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 00:07:27,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 00:07:27,326 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 00:07:27,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 00:07:27,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 00:07:27,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 00:07:27,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 00:07:27,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 00:07:27,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 00:07:27,339 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 00:07:27,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 00:07:27,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 00:07:27,344 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 00:07:27,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 00:07:27,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 00:07:27,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 00:07:27,349 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 00:07:27,350 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 00:07:27,351 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 00:07:27,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 00:07:27,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 00:07:27,354 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 00:07:27,355 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 00:07:27,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 00:07:27,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 00:07:27,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 00:07:27,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 00:07:27,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 00:07:27,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 00:07:27,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 00:07:27,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 00:07:27,397 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 00:07:27,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 00:07:27,400 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 00:07:27,402 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 00:07:27,402 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 00:07:27,402 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 00:07:27,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 00:07:27,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 00:07:27,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 00:07:27,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 00:07:27,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 00:07:27,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 00:07:27,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 00:07:27,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 00:07:27,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 00:07:27,406 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 00:07:27,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 00:07:27,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 00:07:27,407 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 00:07:27,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 00:07:27,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 00:07:27,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 00:07:27,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 00:07:27,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 00:07:27,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 00:07:27,409 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 00:07:27,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 00:07:27,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 00:07:27,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 00:07:27,410 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b83410ec0d4003fbe602c21989d2443a34b0c7 [2020-10-26 00:07:27,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 00:07:27,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 00:07:27,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 00:07:27,873 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 00:07:27,875 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 00:07:27,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread/triangular-1.i [2020-10-26 00:07:27,972 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f28bd553/81fd30c1a0514478a06586aeb865f538/FLAG583b2b969 [2020-10-26 00:07:28,752 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 00:07:28,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread/triangular-1.i [2020-10-26 00:07:28,775 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f28bd553/81fd30c1a0514478a06586aeb865f538/FLAG583b2b969 [2020-10-26 00:07:29,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f28bd553/81fd30c1a0514478a06586aeb865f538 [2020-10-26 00:07:29,013 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 00:07:29,021 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-26 00:07:29,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 00:07:29,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 00:07:29,031 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 00:07:29,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:07:29" (1/1) ... [2020-10-26 00:07:29,036 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61eb06b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:29, skipping insertion in model container [2020-10-26 00:07:29,036 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 12:07:29" (1/1) ... [2020-10-26 00:07:29,045 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 00:07:29,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 00:07:29,602 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:07:29,614 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 00:07:29,692 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 00:07:29,779 INFO L208 MainTranslator]: Completed translation [2020-10-26 00:07:29,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:29 WrapperNode [2020-10-26 00:07:29,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 00:07:29,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-26 00:07:29,781 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-26 00:07:29,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-26 00:07:29,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:29" (1/1) ... [2020-10-26 00:07:29,807 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:29" (1/1) ... [2020-10-26 00:07:29,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-26 00:07:29,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 00:07:29,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 00:07:29,831 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 00:07:29,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:29" (1/1) ... [2020-10-26 00:07:29,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:29" (1/1) ... [2020-10-26 00:07:29,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:29" (1/1) ... [2020-10-26 00:07:29,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:29" (1/1) ... [2020-10-26 00:07:29,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:29" (1/1) ... [2020-10-26 00:07:29,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:29" (1/1) ... [2020-10-26 00:07:29,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:29" (1/1) ... [2020-10-26 00:07:29,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 00:07:29,864 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 00:07:29,864 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 00:07:29,864 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 00:07:29,865 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:29" (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 [2020-10-26 00:07:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2020-10-26 00:07:29,944 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2020-10-26 00:07:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2020-10-26 00:07:29,944 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2020-10-26 00:07:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 00:07:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-10-26 00:07:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 00:07:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 00:07:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 00:07:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-10-26 00:07:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 00:07:29,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 00:07:29,947 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-26 00:07:30,482 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 00:07:30,483 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-26 00:07:30,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:07:30 BoogieIcfgContainer [2020-10-26 00:07:30,486 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 00:07:30,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 00:07:30,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 00:07:30,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 00:07:30,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 12:07:29" (1/3) ... [2020-10-26 00:07:30,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d6ef8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:07:30, skipping insertion in model container [2020-10-26 00:07:30,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 12:07:29" (2/3) ... [2020-10-26 00:07:30,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d6ef8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 12:07:30, skipping insertion in model container [2020-10-26 00:07:30,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:07:30" (3/3) ... [2020-10-26 00:07:30,496 INFO L111 eAbstractionObserver]: Analyzing ICFG triangular-1.i [2020-10-26 00:07:30,511 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-26 00:07:30,511 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-26 00:07:30,517 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 00:07:30,518 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-26 00:07:30,566 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,567 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,567 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,567 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,568 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,568 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,568 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,569 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,569 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,569 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,569 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,570 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,570 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,570 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,571 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,571 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,571 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,571 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,572 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,573 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,574 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,574 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,574 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,574 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,575 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,575 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,575 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,576 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,579 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,579 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,580 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,580 WARN L313 ript$VariableManager]: TermVariabe t1Thread1of1ForFork0_~k~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,580 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,580 WARN L313 ript$VariableManager]: TermVariabe |t1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,592 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,594 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,594 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,594 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#t~post6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,594 WARN L313 ript$VariableManager]: TermVariabe |t2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,594 WARN L313 ript$VariableManager]: TermVariabe t2Thread1of1ForFork1_~k~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-26 00:07:30,600 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-10-26 00:07:30,616 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-26 00:07:30,642 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 00:07:30,642 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 00:07:30,642 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-26 00:07:30,643 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 00:07:30,643 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 00:07:30,643 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 00:07:30,643 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 00:07:30,643 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 00:07:30,655 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-26 00:07:30,658 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 64 transitions, 138 flow [2020-10-26 00:07:30,661 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 64 transitions, 138 flow [2020-10-26 00:07:30,663 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 65 places, 64 transitions, 138 flow [2020-10-26 00:07:30,706 INFO L129 PetriNetUnfolder]: 6/62 cut-off events. [2020-10-26 00:07:30,709 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-26 00:07:30,718 INFO L80 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 62 events. 6/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 97 event pairs, 0 based on Foata normal form. 0/55 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2020-10-26 00:07:30,721 INFO L116 LiptonReduction]: Number of co-enabled transitions 1144 [2020-10-26 00:07:31,847 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2020-10-26 00:07:32,351 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-10-26 00:07:32,461 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 00:07:32,893 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-10-26 00:07:33,049 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-26 00:07:33,111 INFO L131 LiptonReduction]: Checked pairs total: 1187 [2020-10-26 00:07:33,111 INFO L133 LiptonReduction]: Total number of compositions: 62 [2020-10-26 00:07:33,118 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 42 flow [2020-10-26 00:07:33,129 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 44 states. [2020-10-26 00:07:33,131 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-10-26 00:07:33,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-26 00:07:33,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:33,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-26 00:07:33,139 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:33,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:33,146 INFO L82 PathProgramCache]: Analyzing trace with hash -805875314, now seen corresponding path program 1 times [2020-10-26 00:07:33,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:33,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11890866] [2020-10-26 00:07:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:33,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11890866] [2020-10-26 00:07:33,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:33,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-26 00:07:33,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099124505] [2020-10-26 00:07:33,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 00:07:33,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:33,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 00:07:33,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 00:07:33,481 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-10-26 00:07:33,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:33,559 INFO L93 Difference]: Finished difference Result 75 states and 190 transitions. [2020-10-26 00:07:33,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 00:07:33,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-10-26 00:07:33,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:33,573 INFO L225 Difference]: With dead ends: 75 [2020-10-26 00:07:33,573 INFO L226 Difference]: Without dead ends: 42 [2020-10-26 00:07:33,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:07:33,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-26 00:07:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-26 00:07:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 00:07:33,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 98 transitions. [2020-10-26 00:07:33,618 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 98 transitions. Word has length 6 [2020-10-26 00:07:33,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:33,619 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 98 transitions. [2020-10-26 00:07:33,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 00:07:33,619 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 98 transitions. [2020-10-26 00:07:33,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-26 00:07:33,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:33,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:33,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 00:07:33,621 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:33,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:33,622 INFO L82 PathProgramCache]: Analyzing trace with hash -1351909113, now seen corresponding path program 1 times [2020-10-26 00:07:33,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:33,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462924239] [2020-10-26 00:07:33,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:33,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:33,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462924239] [2020-10-26 00:07:33,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:33,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 00:07:33,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011646930] [2020-10-26 00:07:33,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 00:07:33,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:33,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 00:07:33,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 00:07:33,725 INFO L87 Difference]: Start difference. First operand 42 states and 98 transitions. Second operand 5 states. [2020-10-26 00:07:33,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:33,757 INFO L93 Difference]: Finished difference Result 56 states and 130 transitions. [2020-10-26 00:07:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-26 00:07:33,758 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2020-10-26 00:07:33,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:33,759 INFO L225 Difference]: With dead ends: 56 [2020-10-26 00:07:33,759 INFO L226 Difference]: Without dead ends: 50 [2020-10-26 00:07:33,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:07:33,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-26 00:07:33,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 42. [2020-10-26 00:07:33,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-26 00:07:33,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 100 transitions. [2020-10-26 00:07:33,769 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 100 transitions. Word has length 8 [2020-10-26 00:07:33,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:33,771 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 100 transitions. [2020-10-26 00:07:33,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 00:07:33,771 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 100 transitions. [2020-10-26 00:07:33,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:07:33,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:33,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:33,773 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 00:07:33,773 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:33,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:33,774 INFO L82 PathProgramCache]: Analyzing trace with hash 2021583950, now seen corresponding path program 1 times [2020-10-26 00:07:33,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:33,774 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601510844] [2020-10-26 00:07:33,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:33,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601510844] [2020-10-26 00:07:33,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:33,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:07:33,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202811783] [2020-10-26 00:07:33,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:07:33,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:33,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:07:33,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:07:33,861 INFO L87 Difference]: Start difference. First operand 42 states and 100 transitions. Second operand 6 states. [2020-10-26 00:07:33,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:33,948 INFO L93 Difference]: Finished difference Result 54 states and 124 transitions. [2020-10-26 00:07:33,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:07:33,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-26 00:07:33,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:33,950 INFO L225 Difference]: With dead ends: 54 [2020-10-26 00:07:33,950 INFO L226 Difference]: Without dead ends: 47 [2020-10-26 00:07:33,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-26 00:07:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-26 00:07:33,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2020-10-26 00:07:33,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-26 00:07:33,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 106 transitions. [2020-10-26 00:07:33,958 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 106 transitions. Word has length 10 [2020-10-26 00:07:33,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:33,958 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 106 transitions. [2020-10-26 00:07:33,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:07:33,958 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 106 transitions. [2020-10-26 00:07:33,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:07:33,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:33,960 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:33,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 00:07:33,960 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:33,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:33,961 INFO L82 PathProgramCache]: Analyzing trace with hash 2101929440, now seen corresponding path program 2 times [2020-10-26 00:07:33,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:33,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031577319] [2020-10-26 00:07:33,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:34,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:34,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031577319] [2020-10-26 00:07:34,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:34,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:07:34,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176068858] [2020-10-26 00:07:34,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:07:34,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:34,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:07:34,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:07:34,097 INFO L87 Difference]: Start difference. First operand 45 states and 106 transitions. Second operand 6 states. [2020-10-26 00:07:34,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:34,174 INFO L93 Difference]: Finished difference Result 59 states and 138 transitions. [2020-10-26 00:07:34,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:07:34,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-26 00:07:34,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:34,176 INFO L225 Difference]: With dead ends: 59 [2020-10-26 00:07:34,176 INFO L226 Difference]: Without dead ends: 53 [2020-10-26 00:07:34,177 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-26 00:07:34,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-26 00:07:34,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2020-10-26 00:07:34,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-26 00:07:34,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 96 transitions. [2020-10-26 00:07:34,184 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 96 transitions. Word has length 10 [2020-10-26 00:07:34,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:34,184 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 96 transitions. [2020-10-26 00:07:34,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:07:34,184 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 96 transitions. [2020-10-26 00:07:34,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-26 00:07:34,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:34,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:34,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 00:07:34,186 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:34,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:34,186 INFO L82 PathProgramCache]: Analyzing trace with hash 2082353870, now seen corresponding path program 3 times [2020-10-26 00:07:34,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:34,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716088365] [2020-10-26 00:07:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:34,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:34,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716088365] [2020-10-26 00:07:34,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 00:07:34,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 00:07:34,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149926240] [2020-10-26 00:07:34,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 00:07:34,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:34,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 00:07:34,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 00:07:34,286 INFO L87 Difference]: Start difference. First operand 41 states and 96 transitions. Second operand 6 states. [2020-10-26 00:07:34,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:34,385 INFO L93 Difference]: Finished difference Result 65 states and 152 transitions. [2020-10-26 00:07:34,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 00:07:34,387 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-26 00:07:34,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:34,388 INFO L225 Difference]: With dead ends: 65 [2020-10-26 00:07:34,388 INFO L226 Difference]: Without dead ends: 52 [2020-10-26 00:07:34,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-26 00:07:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-26 00:07:34,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 41. [2020-10-26 00:07:34,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-26 00:07:34,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 99 transitions. [2020-10-26 00:07:34,406 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 99 transitions. Word has length 10 [2020-10-26 00:07:34,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:34,407 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 99 transitions. [2020-10-26 00:07:34,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 00:07:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 99 transitions. [2020-10-26 00:07:34,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 00:07:34,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:34,411 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:34,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 00:07:34,411 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:34,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:34,412 INFO L82 PathProgramCache]: Analyzing trace with hash 735328415, now seen corresponding path program 4 times [2020-10-26 00:07:34,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:34,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028170717] [2020-10-26 00:07:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:34,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:34,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028170717] [2020-10-26 00:07:34,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738375765] [2020-10-26 00:07:34,524 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:34,627 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-26 00:07:34,627 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:34,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 00:07:34,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:34,737 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-26 00:07:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:34,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:34,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-26 00:07:34,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477314423] [2020-10-26 00:07:34,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 00:07:34,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:34,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 00:07:34,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 00:07:34,794 INFO L87 Difference]: Start difference. First operand 41 states and 99 transitions. Second operand 8 states. [2020-10-26 00:07:34,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:34,999 INFO L93 Difference]: Finished difference Result 63 states and 147 transitions. [2020-10-26 00:07:35,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 00:07:35,000 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-26 00:07:35,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:35,001 INFO L225 Difference]: With dead ends: 63 [2020-10-26 00:07:35,001 INFO L226 Difference]: Without dead ends: 54 [2020-10-26 00:07:35,001 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-26 00:07:35,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-26 00:07:35,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2020-10-26 00:07:35,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-26 00:07:35,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 87 transitions. [2020-10-26 00:07:35,007 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 87 transitions. Word has length 11 [2020-10-26 00:07:35,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:35,007 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 87 transitions. [2020-10-26 00:07:35,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 00:07:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 87 transitions. [2020-10-26 00:07:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-26 00:07:35,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:35,008 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:35,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-26 00:07:35,221 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:35,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:35,222 INFO L82 PathProgramCache]: Analyzing trace with hash 128488628, now seen corresponding path program 5 times [2020-10-26 00:07:35,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:35,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227166491] [2020-10-26 00:07:35,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:35,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:35,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227166491] [2020-10-26 00:07:35,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370470760] [2020-10-26 00:07:35,307 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:35,365 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 00:07:35,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:35,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 00:07:35,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:35,397 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:07:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:35,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:35,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-26 00:07:35,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879951719] [2020-10-26 00:07:35,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 00:07:35,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:35,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 00:07:35,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-26 00:07:35,410 INFO L87 Difference]: Start difference. First operand 37 states and 87 transitions. Second operand 8 states. [2020-10-26 00:07:35,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:35,515 INFO L93 Difference]: Finished difference Result 56 states and 133 transitions. [2020-10-26 00:07:35,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 00:07:35,516 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 11 [2020-10-26 00:07:35,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:35,517 INFO L225 Difference]: With dead ends: 56 [2020-10-26 00:07:35,517 INFO L226 Difference]: Without dead ends: 51 [2020-10-26 00:07:35,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-26 00:07:35,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-26 00:07:35,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 43. [2020-10-26 00:07:35,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-26 00:07:35,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 105 transitions. [2020-10-26 00:07:35,523 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 105 transitions. Word has length 11 [2020-10-26 00:07:35,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:35,523 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 105 transitions. [2020-10-26 00:07:35,523 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 00:07:35,523 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 105 transitions. [2020-10-26 00:07:35,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:07:35,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:35,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:35,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:35,736 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:35,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:35,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1416964401, now seen corresponding path program 6 times [2020-10-26 00:07:35,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:35,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236563166] [2020-10-26 00:07:35,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:35,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:35,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236563166] [2020-10-26 00:07:35,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805298061] [2020-10-26 00:07:35,833 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:35,921 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2020-10-26 00:07:35,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:35,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-26 00:07:35,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:35,935 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:07:35,978 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:35,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:35,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-10-26 00:07:35,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866142332] [2020-10-26 00:07:35,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 00:07:35,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:35,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 00:07:35,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 00:07:35,984 INFO L87 Difference]: Start difference. First operand 43 states and 105 transitions. Second operand 8 states. [2020-10-26 00:07:36,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:36,130 INFO L93 Difference]: Finished difference Result 56 states and 131 transitions. [2020-10-26 00:07:36,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 00:07:36,130 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-10-26 00:07:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:36,132 INFO L225 Difference]: With dead ends: 56 [2020-10-26 00:07:36,132 INFO L226 Difference]: Without dead ends: 50 [2020-10-26 00:07:36,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156 [2020-10-26 00:07:36,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-26 00:07:36,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-10-26 00:07:36,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-26 00:07:36,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 111 transitions. [2020-10-26 00:07:36,150 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 111 transitions. Word has length 12 [2020-10-26 00:07:36,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:36,151 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 111 transitions. [2020-10-26 00:07:36,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 00:07:36,151 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 111 transitions. [2020-10-26 00:07:36,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:07:36,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:36,153 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:36,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:36,354 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:36,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:36,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1320372483, now seen corresponding path program 7 times [2020-10-26 00:07:36,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:36,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570463730] [2020-10-26 00:07:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:36,440 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:36,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570463730] [2020-10-26 00:07:36,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42649478] [2020-10-26 00:07:36,440 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:36,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:36,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 00:07:36,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:36,526 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:07:36,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:36,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:36,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-26 00:07:36,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529441041] [2020-10-26 00:07:36,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 00:07:36,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:36,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 00:07:36,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-26 00:07:36,539 INFO L87 Difference]: Start difference. First operand 46 states and 111 transitions. Second operand 9 states. [2020-10-26 00:07:36,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:36,778 INFO L93 Difference]: Finished difference Result 63 states and 149 transitions. [2020-10-26 00:07:36,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 00:07:36,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-26 00:07:36,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:36,780 INFO L225 Difference]: With dead ends: 63 [2020-10-26 00:07:36,780 INFO L226 Difference]: Without dead ends: 58 [2020-10-26 00:07:36,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-10-26 00:07:36,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-26 00:07:36,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 41. [2020-10-26 00:07:36,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-26 00:07:36,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 97 transitions. [2020-10-26 00:07:36,786 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 97 transitions. Word has length 12 [2020-10-26 00:07:36,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:36,786 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 97 transitions. [2020-10-26 00:07:36,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 00:07:36,786 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 97 transitions. [2020-10-26 00:07:36,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-26 00:07:36,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:36,787 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:36,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:36,999 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:37,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:37,000 INFO L82 PathProgramCache]: Analyzing trace with hash -311794613, now seen corresponding path program 8 times [2020-10-26 00:07:37,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:37,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735397168] [2020-10-26 00:07:37,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:37,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735397168] [2020-10-26 00:07:37,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500763505] [2020-10-26 00:07:37,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:37,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 00:07:37,137 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:37,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-26 00:07:37,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:37,163 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-26 00:07:37,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:37,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:37,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-26 00:07:37,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120993998] [2020-10-26 00:07:37,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 00:07:37,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:37,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 00:07:37,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-26 00:07:37,177 INFO L87 Difference]: Start difference. First operand 41 states and 97 transitions. Second operand 9 states. [2020-10-26 00:07:37,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:37,433 INFO L93 Difference]: Finished difference Result 71 states and 167 transitions. [2020-10-26 00:07:37,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 00:07:37,434 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2020-10-26 00:07:37,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:37,435 INFO L225 Difference]: With dead ends: 71 [2020-10-26 00:07:37,435 INFO L226 Difference]: Without dead ends: 62 [2020-10-26 00:07:37,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=201, Unknown=0, NotChecked=0, Total=306 [2020-10-26 00:07:37,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-26 00:07:37,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 47. [2020-10-26 00:07:37,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-26 00:07:37,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 115 transitions. [2020-10-26 00:07:37,452 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 115 transitions. Word has length 12 [2020-10-26 00:07:37,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:37,454 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 115 transitions. [2020-10-26 00:07:37,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 00:07:37,454 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 115 transitions. [2020-10-26 00:07:37,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:07:37,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:37,457 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:37,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-26 00:07:37,671 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:37,673 INFO L82 PathProgramCache]: Analyzing trace with hash -2018100772, now seen corresponding path program 9 times [2020-10-26 00:07:37,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:37,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398346214] [2020-10-26 00:07:37,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:37,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:37,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398346214] [2020-10-26 00:07:37,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967683612] [2020-10-26 00:07:37,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:37,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-10-26 00:07:37,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:37,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 00:07:37,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:37,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:37,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:37,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-26 00:07:37,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365743323] [2020-10-26 00:07:37,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 00:07:37,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:37,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 00:07:37,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:07:37,881 INFO L87 Difference]: Start difference. First operand 47 states and 115 transitions. Second operand 10 states. [2020-10-26 00:07:38,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:38,182 INFO L93 Difference]: Finished difference Result 72 states and 169 transitions. [2020-10-26 00:07:38,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 00:07:38,182 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-26 00:07:38,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:38,183 INFO L225 Difference]: With dead ends: 72 [2020-10-26 00:07:38,183 INFO L226 Difference]: Without dead ends: 63 [2020-10-26 00:07:38,184 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-10-26 00:07:38,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-26 00:07:38,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 41. [2020-10-26 00:07:38,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-26 00:07:38,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 97 transitions. [2020-10-26 00:07:38,188 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 97 transitions. Word has length 13 [2020-10-26 00:07:38,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:38,188 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 97 transitions. [2020-10-26 00:07:38,189 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 00:07:38,189 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 97 transitions. [2020-10-26 00:07:38,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-26 00:07:38,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:38,190 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:38,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:38,391 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:38,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:38,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1075670313, now seen corresponding path program 10 times [2020-10-26 00:07:38,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:38,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042535454] [2020-10-26 00:07:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:38,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:38,509 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:38,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042535454] [2020-10-26 00:07:38,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514044657] [2020-10-26 00:07:38,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:38,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-26 00:07:38,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:38,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-26 00:07:38,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:38,597 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:07:38,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:38,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:38,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-26 00:07:38,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906481875] [2020-10-26 00:07:38,614 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 00:07:38,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:38,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 00:07:38,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:07:38,615 INFO L87 Difference]: Start difference. First operand 41 states and 97 transitions. Second operand 10 states. [2020-10-26 00:07:38,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:38,825 INFO L93 Difference]: Finished difference Result 64 states and 153 transitions. [2020-10-26 00:07:38,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 00:07:38,826 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 13 [2020-10-26 00:07:38,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:38,827 INFO L225 Difference]: With dead ends: 64 [2020-10-26 00:07:38,827 INFO L226 Difference]: Without dead ends: 59 [2020-10-26 00:07:38,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=221, Unknown=0, NotChecked=0, Total=342 [2020-10-26 00:07:38,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-26 00:07:38,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2020-10-26 00:07:38,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-26 00:07:38,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 121 transitions. [2020-10-26 00:07:38,832 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 121 transitions. Word has length 13 [2020-10-26 00:07:38,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:38,833 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 121 transitions. [2020-10-26 00:07:38,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 00:07:38,833 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 121 transitions. [2020-10-26 00:07:38,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:07:38,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:38,834 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:39,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:39,045 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:39,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:39,046 INFO L82 PathProgramCache]: Analyzing trace with hash 198162772, now seen corresponding path program 11 times [2020-10-26 00:07:39,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:39,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879397276] [2020-10-26 00:07:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:39,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:39,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:39,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879397276] [2020-10-26 00:07:39,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573137330] [2020-10-26 00:07:39,149 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:39,206 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-10-26 00:07:39,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:39,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 00:07:39,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:39,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:07:39,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:39,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:39,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-10-26 00:07:39,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083552573] [2020-10-26 00:07:39,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 00:07:39,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:39,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 00:07:39,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:07:39,229 INFO L87 Difference]: Start difference. First operand 49 states and 121 transitions. Second operand 10 states. [2020-10-26 00:07:39,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:39,359 INFO L93 Difference]: Finished difference Result 64 states and 151 transitions. [2020-10-26 00:07:39,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 00:07:39,360 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-10-26 00:07:39,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:39,361 INFO L225 Difference]: With dead ends: 64 [2020-10-26 00:07:39,361 INFO L226 Difference]: Without dead ends: 58 [2020-10-26 00:07:39,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=176, Unknown=0, NotChecked=0, Total=272 [2020-10-26 00:07:39,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-26 00:07:39,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-10-26 00:07:39,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-26 00:07:39,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 127 transitions. [2020-10-26 00:07:39,366 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 127 transitions. Word has length 14 [2020-10-26 00:07:39,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:39,366 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 127 transitions. [2020-10-26 00:07:39,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 00:07:39,367 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 127 transitions. [2020-10-26 00:07:39,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:07:39,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:39,368 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:39,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-10-26 00:07:39,579 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:39,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:39,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1863413606, now seen corresponding path program 12 times [2020-10-26 00:07:39,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:39,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371434737] [2020-10-26 00:07:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:39,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:39,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:39,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371434737] [2020-10-26 00:07:39,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127583415] [2020-10-26 00:07:39,678 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:39,737 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-10-26 00:07:39,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:39,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 00:07:39,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:39,776 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:07:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:39,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:39,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-26 00:07:39,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458485343] [2020-10-26 00:07:39,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 00:07:39,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:39,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 00:07:39,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 00:07:39,793 INFO L87 Difference]: Start difference. First operand 52 states and 127 transitions. Second operand 11 states. [2020-10-26 00:07:40,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:40,086 INFO L93 Difference]: Finished difference Result 73 states and 173 transitions. [2020-10-26 00:07:40,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 00:07:40,086 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-26 00:07:40,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:40,087 INFO L225 Difference]: With dead ends: 73 [2020-10-26 00:07:40,087 INFO L226 Difference]: Without dead ends: 68 [2020-10-26 00:07:40,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=193, Invalid=359, Unknown=0, NotChecked=0, Total=552 [2020-10-26 00:07:40,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-26 00:07:40,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 45. [2020-10-26 00:07:40,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-26 00:07:40,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 107 transitions. [2020-10-26 00:07:40,092 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 107 transitions. Word has length 14 [2020-10-26 00:07:40,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:40,093 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 107 transitions. [2020-10-26 00:07:40,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 00:07:40,093 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 107 transitions. [2020-10-26 00:07:40,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-26 00:07:40,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:40,094 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:40,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:40,295 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:40,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:40,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1013983880, now seen corresponding path program 13 times [2020-10-26 00:07:40,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:40,297 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234145132] [2020-10-26 00:07:40,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:40,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:40,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234145132] [2020-10-26 00:07:40,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219169639] [2020-10-26 00:07:40,369 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:40,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-10-26 00:07:40,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:40,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-26 00:07:40,491 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:40,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:40,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-26 00:07:40,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212188035] [2020-10-26 00:07:40,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 00:07:40,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:40,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 00:07:40,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 00:07:40,494 INFO L87 Difference]: Start difference. First operand 45 states and 107 transitions. Second operand 11 states. [2020-10-26 00:07:40,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:40,810 INFO L93 Difference]: Finished difference Result 81 states and 191 transitions. [2020-10-26 00:07:40,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 00:07:40,812 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 14 [2020-10-26 00:07:40,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:40,812 INFO L225 Difference]: With dead ends: 81 [2020-10-26 00:07:40,813 INFO L226 Difference]: Without dead ends: 72 [2020-10-26 00:07:40,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=182, Invalid=370, Unknown=0, NotChecked=0, Total=552 [2020-10-26 00:07:40,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-26 00:07:40,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 53. [2020-10-26 00:07:40,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-26 00:07:40,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 131 transitions. [2020-10-26 00:07:40,823 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 131 transitions. Word has length 14 [2020-10-26 00:07:40,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:40,823 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 131 transitions. [2020-10-26 00:07:40,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 00:07:40,823 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 131 transitions. [2020-10-26 00:07:40,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:07:40,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:40,826 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:41,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-26 00:07:41,036 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:41,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:41,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1931272153, now seen corresponding path program 14 times [2020-10-26 00:07:41,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:41,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058003383] [2020-10-26 00:07:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:41,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:41,121 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:41,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058003383] [2020-10-26 00:07:41,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419302947] [2020-10-26 00:07:41,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:41,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 00:07:41,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:41,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 00:07:41,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:41,225 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-26 00:07:41,238 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:41,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:41,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-26 00:07:41,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988471982] [2020-10-26 00:07:41,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 00:07:41,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:41,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 00:07:41,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-26 00:07:41,241 INFO L87 Difference]: Start difference. First operand 53 states and 131 transitions. Second operand 12 states. [2020-10-26 00:07:41,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:41,611 INFO L93 Difference]: Finished difference Result 82 states and 193 transitions. [2020-10-26 00:07:41,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 00:07:41,611 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-26 00:07:41,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:41,613 INFO L225 Difference]: With dead ends: 82 [2020-10-26 00:07:41,613 INFO L226 Difference]: Without dead ends: 73 [2020-10-26 00:07:41,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=475, Unknown=0, NotChecked=0, Total=702 [2020-10-26 00:07:41,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-26 00:07:41,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 45. [2020-10-26 00:07:41,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-26 00:07:41,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 107 transitions. [2020-10-26 00:07:41,619 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 107 transitions. Word has length 15 [2020-10-26 00:07:41,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:41,619 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 107 transitions. [2020-10-26 00:07:41,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 00:07:41,619 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 107 transitions. [2020-10-26 00:07:41,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-26 00:07:41,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:41,620 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:41,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-26 00:07:41,833 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:41,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:41,834 INFO L82 PathProgramCache]: Analyzing trace with hash 1368757306, now seen corresponding path program 15 times [2020-10-26 00:07:41,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:41,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838493044] [2020-10-26 00:07:41,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:41,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:41,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838493044] [2020-10-26 00:07:41,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631678657] [2020-10-26 00:07:41,908 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:41,983 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-26 00:07:41,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:41,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-26 00:07:41,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:42,005 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:07:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:42,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:42,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-26 00:07:42,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089028911] [2020-10-26 00:07:42,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 00:07:42,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:42,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 00:07:42,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-26 00:07:42,021 INFO L87 Difference]: Start difference. First operand 45 states and 107 transitions. Second operand 12 states. [2020-10-26 00:07:42,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:42,348 INFO L93 Difference]: Finished difference Result 72 states and 173 transitions. [2020-10-26 00:07:42,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 00:07:42,349 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-10-26 00:07:42,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:42,350 INFO L225 Difference]: With dead ends: 72 [2020-10-26 00:07:42,350 INFO L226 Difference]: Without dead ends: 67 [2020-10-26 00:07:42,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=395, Unknown=0, NotChecked=0, Total=600 [2020-10-26 00:07:42,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-26 00:07:42,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2020-10-26 00:07:42,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-26 00:07:42,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 137 transitions. [2020-10-26 00:07:42,360 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 137 transitions. Word has length 15 [2020-10-26 00:07:42,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:42,361 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 137 transitions. [2020-10-26 00:07:42,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 00:07:42,362 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 137 transitions. [2020-10-26 00:07:42,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 00:07:42,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:42,363 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:42,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-26 00:07:42,573 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:42,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:42,574 INFO L82 PathProgramCache]: Analyzing trace with hash 1455869111, now seen corresponding path program 16 times [2020-10-26 00:07:42,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:42,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471502315] [2020-10-26 00:07:42,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:42,710 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:42,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471502315] [2020-10-26 00:07:42,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455432183] [2020-10-26 00:07:42,711 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:42,774 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-26 00:07:42,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:42,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 00:07:42,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:42,779 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:07:42,805 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:42,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:42,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-10-26 00:07:42,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928452304] [2020-10-26 00:07:42,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 00:07:42,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:42,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 00:07:42,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-26 00:07:42,807 INFO L87 Difference]: Start difference. First operand 55 states and 137 transitions. Second operand 12 states. [2020-10-26 00:07:43,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:43,003 INFO L93 Difference]: Finished difference Result 72 states and 171 transitions. [2020-10-26 00:07:43,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 00:07:43,004 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 16 [2020-10-26 00:07:43,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:43,005 INFO L225 Difference]: With dead ends: 72 [2020-10-26 00:07:43,006 INFO L226 Difference]: Without dead ends: 66 [2020-10-26 00:07:43,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=145, Invalid=275, Unknown=0, NotChecked=0, Total=420 [2020-10-26 00:07:43,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-26 00:07:43,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2020-10-26 00:07:43,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-26 00:07:43,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 143 transitions. [2020-10-26 00:07:43,010 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 143 transitions. Word has length 16 [2020-10-26 00:07:43,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:43,011 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 143 transitions. [2020-10-26 00:07:43,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 00:07:43,011 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 143 transitions. [2020-10-26 00:07:43,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 00:07:43,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:43,012 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:43,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-26 00:07:43,223 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:43,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:43,223 INFO L82 PathProgramCache]: Analyzing trace with hash -260077303, now seen corresponding path program 17 times [2020-10-26 00:07:43,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:43,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470124256] [2020-10-26 00:07:43,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:43,311 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:43,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470124256] [2020-10-26 00:07:43,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16285714] [2020-10-26 00:07:43,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:43,369 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-10-26 00:07:43,369 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:43,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-26 00:07:43,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:43,402 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:07:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:43,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:43,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-10-26 00:07:43,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876281870] [2020-10-26 00:07:43,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 00:07:43,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:43,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 00:07:43,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-10-26 00:07:43,418 INFO L87 Difference]: Start difference. First operand 58 states and 143 transitions. Second operand 13 states. [2020-10-26 00:07:43,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:43,796 INFO L93 Difference]: Finished difference Result 83 states and 197 transitions. [2020-10-26 00:07:43,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 00:07:43,797 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-26 00:07:43,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:43,797 INFO L225 Difference]: With dead ends: 83 [2020-10-26 00:07:43,798 INFO L226 Difference]: Without dead ends: 78 [2020-10-26 00:07:43,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=298, Invalid=572, Unknown=0, NotChecked=0, Total=870 [2020-10-26 00:07:43,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-26 00:07:43,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 49. [2020-10-26 00:07:43,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-26 00:07:43,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 117 transitions. [2020-10-26 00:07:43,803 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 117 transitions. Word has length 16 [2020-10-26 00:07:43,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:43,803 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 117 transitions. [2020-10-26 00:07:43,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 00:07:43,803 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 117 transitions. [2020-10-26 00:07:43,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-26 00:07:43,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:43,804 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:44,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:44,010 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:44,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:44,010 INFO L82 PathProgramCache]: Analyzing trace with hash -518171259, now seen corresponding path program 18 times [2020-10-26 00:07:44,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:44,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918851730] [2020-10-26 00:07:44,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:44,092 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:44,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918851730] [2020-10-26 00:07:44,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047164600] [2020-10-26 00:07:44,093 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:44,161 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-10-26 00:07:44,161 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:44,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 00:07:44,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:44,213 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:44,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:44,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2020-10-26 00:07:44,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776932023] [2020-10-26 00:07:44,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 00:07:44,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:44,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 00:07:44,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-26 00:07:44,216 INFO L87 Difference]: Start difference. First operand 49 states and 117 transitions. Second operand 13 states. [2020-10-26 00:07:44,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:44,619 INFO L93 Difference]: Finished difference Result 91 states and 215 transitions. [2020-10-26 00:07:44,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 00:07:44,619 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-10-26 00:07:44,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:44,621 INFO L225 Difference]: With dead ends: 91 [2020-10-26 00:07:44,621 INFO L226 Difference]: Without dead ends: 82 [2020-10-26 00:07:44,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-10-26 00:07:44,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-26 00:07:44,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 59. [2020-10-26 00:07:44,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-26 00:07:44,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 147 transitions. [2020-10-26 00:07:44,626 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 147 transitions. Word has length 16 [2020-10-26 00:07:44,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:44,626 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 147 transitions. [2020-10-26 00:07:44,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 00:07:44,626 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 147 transitions. [2020-10-26 00:07:44,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:07:44,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:44,628 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:44,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:44,839 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:44,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:44,840 INFO L82 PathProgramCache]: Analyzing trace with hash 527563414, now seen corresponding path program 19 times [2020-10-26 00:07:44,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:44,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596357483] [2020-10-26 00:07:44,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:44,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596357483] [2020-10-26 00:07:44,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293651246] [2020-10-26 00:07:44,968 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:45,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:45,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 00:07:45,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:45,052 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-26 00:07:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:45,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:45,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-26 00:07:45,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122800178] [2020-10-26 00:07:45,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 00:07:45,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:45,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 00:07:45,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-10-26 00:07:45,068 INFO L87 Difference]: Start difference. First operand 59 states and 147 transitions. Second operand 14 states. [2020-10-26 00:07:45,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:45,574 INFO L93 Difference]: Finished difference Result 92 states and 217 transitions. [2020-10-26 00:07:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 00:07:45,575 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-26 00:07:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:45,576 INFO L225 Difference]: With dead ends: 92 [2020-10-26 00:07:45,576 INFO L226 Difference]: Without dead ends: 83 [2020-10-26 00:07:45,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=337, Invalid=719, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 00:07:45,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-26 00:07:45,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 49. [2020-10-26 00:07:45,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-26 00:07:45,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 117 transitions. [2020-10-26 00:07:45,581 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 117 transitions. Word has length 17 [2020-10-26 00:07:45,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:45,581 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 117 transitions. [2020-10-26 00:07:45,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 00:07:45,582 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 117 transitions. [2020-10-26 00:07:45,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-26 00:07:45,582 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:45,582 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:45,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:45,794 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:45,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:45,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1116588253, now seen corresponding path program 20 times [2020-10-26 00:07:45,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:45,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831278131] [2020-10-26 00:07:45,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:45,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:45,900 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:45,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831278131] [2020-10-26 00:07:45,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29475729] [2020-10-26 00:07:45,901 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:45,967 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-26 00:07:45,968 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:45,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-26 00:07:45,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:46,006 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:07:46,019 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:46,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:46,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2020-10-26 00:07:46,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491250330] [2020-10-26 00:07:46,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 00:07:46,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:46,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 00:07:46,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-26 00:07:46,022 INFO L87 Difference]: Start difference. First operand 49 states and 117 transitions. Second operand 14 states. [2020-10-26 00:07:46,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:46,414 INFO L93 Difference]: Finished difference Result 80 states and 193 transitions. [2020-10-26 00:07:46,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-26 00:07:46,415 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2020-10-26 00:07:46,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:46,415 INFO L225 Difference]: With dead ends: 80 [2020-10-26 00:07:46,416 INFO L226 Difference]: Without dead ends: 75 [2020-10-26 00:07:46,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=311, Invalid=619, Unknown=0, NotChecked=0, Total=930 [2020-10-26 00:07:46,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-26 00:07:46,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 61. [2020-10-26 00:07:46,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-26 00:07:46,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 153 transitions. [2020-10-26 00:07:46,420 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 153 transitions. Word has length 17 [2020-10-26 00:07:46,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:46,420 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 153 transitions. [2020-10-26 00:07:46,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 00:07:46,421 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 153 transitions. [2020-10-26 00:07:46,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:07:46,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:46,422 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:46,629 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-26 00:07:46,630 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:46,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:46,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1069116582, now seen corresponding path program 21 times [2020-10-26 00:07:46,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:46,631 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269373321] [2020-10-26 00:07:46,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:46,766 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:46,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269373321] [2020-10-26 00:07:46,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1479432225] [2020-10-26 00:07:46,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:46,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-10-26 00:07:46,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:46,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-26 00:07:46,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:46,847 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:07:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:46,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:46,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-10-26 00:07:46,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698071459] [2020-10-26 00:07:46,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-26 00:07:46,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:46,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-26 00:07:46,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-26 00:07:46,864 INFO L87 Difference]: Start difference. First operand 61 states and 153 transitions. Second operand 14 states. [2020-10-26 00:07:47,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:47,142 INFO L93 Difference]: Finished difference Result 80 states and 191 transitions. [2020-10-26 00:07:47,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 00:07:47,142 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 18 [2020-10-26 00:07:47,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:47,143 INFO L225 Difference]: With dead ends: 80 [2020-10-26 00:07:47,144 INFO L226 Difference]: Without dead ends: 74 [2020-10-26 00:07:47,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2020-10-26 00:07:47,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-26 00:07:47,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2020-10-26 00:07:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-26 00:07:47,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 159 transitions. [2020-10-26 00:07:47,148 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 159 transitions. Word has length 18 [2020-10-26 00:07:47,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:47,148 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 159 transitions. [2020-10-26 00:07:47,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-26 00:07:47,148 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 159 transitions. [2020-10-26 00:07:47,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:07:47,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:47,149 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:47,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-10-26 00:07:47,359 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:47,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:47,359 INFO L82 PathProgramCache]: Analyzing trace with hash -825375252, now seen corresponding path program 22 times [2020-10-26 00:07:47,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:47,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235273872] [2020-10-26 00:07:47,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:47,464 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:47,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235273872] [2020-10-26 00:07:47,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512083116] [2020-10-26 00:07:47,464 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:47,517 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-10-26 00:07:47,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:47,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-26 00:07:47,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:47,548 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-26 00:07:47,561 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:47,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:47,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-10-26 00:07:47,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064642064] [2020-10-26 00:07:47,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 00:07:47,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:47,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 00:07:47,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-10-26 00:07:47,563 INFO L87 Difference]: Start difference. First operand 64 states and 159 transitions. Second operand 15 states. [2020-10-26 00:07:48,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:48,087 INFO L93 Difference]: Finished difference Result 93 states and 221 transitions. [2020-10-26 00:07:48,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 00:07:48,088 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-26 00:07:48,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:48,090 INFO L225 Difference]: With dead ends: 93 [2020-10-26 00:07:48,090 INFO L226 Difference]: Without dead ends: 88 [2020-10-26 00:07:48,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=425, Invalid=835, Unknown=0, NotChecked=0, Total=1260 [2020-10-26 00:07:48,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-26 00:07:48,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 53. [2020-10-26 00:07:48,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-26 00:07:48,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 127 transitions. [2020-10-26 00:07:48,094 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 127 transitions. Word has length 18 [2020-10-26 00:07:48,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:48,094 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 127 transitions. [2020-10-26 00:07:48,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 00:07:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 127 transitions. [2020-10-26 00:07:48,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-26 00:07:48,095 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:48,095 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:48,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-10-26 00:07:48,296 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:48,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:48,297 INFO L82 PathProgramCache]: Analyzing trace with hash 254522690, now seen corresponding path program 23 times [2020-10-26 00:07:48,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:48,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553868948] [2020-10-26 00:07:48,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:48,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:48,402 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:48,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553868948] [2020-10-26 00:07:48,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [893397857] [2020-10-26 00:07:48,402 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:48,456 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-10-26 00:07:48,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:48,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-26 00:07:48,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:48,487 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-26 00:07:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:48,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-26 00:07:48,498 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13 [2020-10-26 00:07:48,498 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627841099] [2020-10-26 00:07:48,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-26 00:07:48,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:48,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-26 00:07:48,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-10-26 00:07:48,500 INFO L87 Difference]: Start difference. First operand 53 states and 127 transitions. Second operand 15 states. [2020-10-26 00:07:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:49,065 INFO L93 Difference]: Finished difference Result 101 states and 239 transitions. [2020-10-26 00:07:49,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-26 00:07:49,066 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 18 [2020-10-26 00:07:49,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:49,067 INFO L225 Difference]: With dead ends: 101 [2020-10-26 00:07:49,067 INFO L226 Difference]: Without dead ends: 92 [2020-10-26 00:07:49,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=402, Invalid=858, Unknown=0, NotChecked=0, Total=1260 [2020-10-26 00:07:49,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-26 00:07:49,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 65. [2020-10-26 00:07:49,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-26 00:07:49,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 163 transitions. [2020-10-26 00:07:49,073 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 163 transitions. Word has length 18 [2020-10-26 00:07:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:49,073 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 163 transitions. [2020-10-26 00:07:49,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-26 00:07:49,073 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 163 transitions. [2020-10-26 00:07:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 00:07:49,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:49,074 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:49,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-10-26 00:07:49,275 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:49,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:49,276 INFO L82 PathProgramCache]: Analyzing trace with hash 183196179, now seen corresponding path program 24 times [2020-10-26 00:07:49,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:49,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131096973] [2020-10-26 00:07:49,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:49,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:49,360 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:49,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131096973] [2020-10-26 00:07:49,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297419644] [2020-10-26 00:07:49,361 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:49,420 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-10-26 00:07:49,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-26 00:07:49,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 00:07:49,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:49,443 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:49,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 00:07:49,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2020-10-26 00:07:49,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003863615] [2020-10-26 00:07:49,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 00:07:49,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:49,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 00:07:49,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-26 00:07:49,444 INFO L87 Difference]: Start difference. First operand 65 states and 163 transitions. Second operand 8 states. [2020-10-26 00:07:49,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:49,466 INFO L93 Difference]: Finished difference Result 144 states and 324 transitions. [2020-10-26 00:07:49,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 00:07:49,466 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-26 00:07:49,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:49,467 INFO L225 Difference]: With dead ends: 144 [2020-10-26 00:07:49,467 INFO L226 Difference]: Without dead ends: 36 [2020-10-26 00:07:49,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-26 00:07:49,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-26 00:07:49,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-26 00:07:49,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-26 00:07:49,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 65 transitions. [2020-10-26 00:07:49,470 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 65 transitions. Word has length 19 [2020-10-26 00:07:49,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:49,470 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 65 transitions. [2020-10-26 00:07:49,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 00:07:49,471 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 65 transitions. [2020-10-26 00:07:49,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-26 00:07:49,471 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 00:07:49,471 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 00:07:49,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-10-26 00:07:49,672 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 00:07:49,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 00:07:49,673 INFO L82 PathProgramCache]: Analyzing trace with hash -699703104, now seen corresponding path program 25 times [2020-10-26 00:07:49,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-26 00:07:49,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410369305] [2020-10-26 00:07:49,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 00:07:49,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:49,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410369305] [2020-10-26 00:07:49,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993304181] [2020-10-26 00:07:49,726 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 00:07:49,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-26 00:07:49,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-26 00:07:49,800 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 00:07:49,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-26 00:07:49,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 10 [2020-10-26 00:07:49,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138052577] [2020-10-26 00:07:49,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 00:07:49,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-26 00:07:49,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 00:07:49,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:07:49,802 INFO L87 Difference]: Start difference. First operand 36 states and 65 transitions. Second operand 8 states. [2020-10-26 00:07:49,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 00:07:49,813 INFO L93 Difference]: Finished difference Result 56 states and 79 transitions. [2020-10-26 00:07:49,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 00:07:49,814 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-26 00:07:49,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 00:07:49,814 INFO L225 Difference]: With dead ends: 56 [2020-10-26 00:07:49,814 INFO L226 Difference]: Without dead ends: 0 [2020-10-26 00:07:49,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-26 00:07:49,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-26 00:07:49,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-26 00:07:49,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-26 00:07:49,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-26 00:07:49,815 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-26 00:07:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 00:07:49,816 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-26 00:07:49,816 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 00:07:49,816 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-26 00:07:49,816 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-26 00:07:50,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-26 00:07:50,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 12:07:50 BasicIcfg [2020-10-26 00:07:50,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 00:07:50,021 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-26 00:07:50,021 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-26 00:07:50,021 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-26 00:07:50,022 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 12:07:30" (3/4) ... [2020-10-26 00:07:50,025 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-26 00:07:50,033 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2020-10-26 00:07:50,033 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2020-10-26 00:07:50,037 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2020-10-26 00:07:50,038 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-10-26 00:07:50,038 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-10-26 00:07:50,038 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-26 00:07:50,075 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-26 00:07:50,075 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-26 00:07:50,077 INFO L168 Benchmark]: Toolchain (without parser) took 21060.85 ms. Allocated memory was 50.3 MB in the beginning and 157.3 MB in the end (delta: 107.0 MB). Free memory was 26.3 MB in the beginning and 57.6 MB in the end (delta: -31.3 MB). Peak memory consumption was 77.2 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:50,077 INFO L168 Benchmark]: CDTParser took 0.42 ms. Allocated memory is still 39.8 MB. Free memory was 17.9 MB in the beginning and 17.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:07:50,078 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.49 ms. Allocated memory is still 50.3 MB. Free memory was 25.7 MB in the beginning and 30.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:50,078 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.37 ms. Allocated memory is still 50.3 MB. Free memory was 30.1 MB in the beginning and 28.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:50,079 INFO L168 Benchmark]: Boogie Preprocessor took 32.59 ms. Allocated memory is still 50.3 MB. Free memory was 28.4 MB in the beginning and 27.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-26 00:07:50,079 INFO L168 Benchmark]: RCFGBuilder took 622.76 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.0 MB in the beginning and 29.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:50,080 INFO L168 Benchmark]: TraceAbstraction took 19532.24 ms. Allocated memory was 60.8 MB in the beginning and 157.3 MB in the end (delta: 96.5 MB). Free memory was 29.1 MB in the beginning and 60.8 MB in the end (delta: -31.7 MB). Peak memory consumption was 63.9 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:50,081 INFO L168 Benchmark]: Witness Printer took 54.76 ms. Allocated memory is still 157.3 MB. Free memory was 60.8 MB in the beginning and 57.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-26 00:07:50,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42 ms. Allocated memory is still 39.8 MB. Free memory was 17.9 MB in the beginning and 17.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 755.49 ms. Allocated memory is still 50.3 MB. Free memory was 25.7 MB in the beginning and 30.3 MB in the end (delta: -4.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.37 ms. Allocated memory is still 50.3 MB. Free memory was 30.1 MB in the beginning and 28.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.59 ms. Allocated memory is still 50.3 MB. Free memory was 28.4 MB in the beginning and 27.0 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 622.76 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 27.0 MB in the beginning and 29.7 MB in the end (delta: -2.7 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19532.24 ms. Allocated memory was 60.8 MB in the beginning and 157.3 MB in the end (delta: 96.5 MB). Free memory was 29.1 MB in the beginning and 60.8 MB in the end (delta: -31.7 MB). Peak memory consumption was 63.9 MB. Max. memory is 16.1 GB. * Witness Printer took 54.76 ms. Allocated memory is still 157.3 MB. Free memory was 60.8 MB in the beginning and 57.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 785 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 19 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.1s, 15 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 2.4s, 65 PlacesBefore, 20 PlacesAfterwards, 64 TransitionsBefore, 16 TransitionsAfterwards, 1144 CoEnabledTransitionPairs, 7 FixpointIterations, 16 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 62 TotalNumberOfCompositions, 1187 MoverChecksTotal - PositiveResult [Line: 685]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 19.3s, OverallIterations: 27, TraceHistogramMax: 6, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 441 SDtfs, 1059 SDslu, 1265 SDs, 0 SdLazy, 1367 SolverSat, 648 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 770 GetRequests, 277 SyntacticMatches, 16 SemanticMatches, 477 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2259 ImplicationChecksByTransitivity, 5.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 27 MinimizatonAttempts, 394 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 86 NumberOfCheckSat, 655 ConstructedInterpolants, 0 QuantifiedInterpolants, 37671 SizeOfPredicates, 136 NumberOfNonLiveVariables, 2486 ConjunctsInSsa, 232 ConjunctsInUnsatCore, 49 InterpolantComputations, 7 PerfectInterpolantSequences, 82/460 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...