/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:49:44,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:49:44,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:49:44,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:49:44,897 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:49:44,903 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:49:44,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:49:44,911 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:49:44,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:49:44,920 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:49:44,922 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:49:44,923 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:49:44,924 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:49:44,927 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:49:44,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:49:44,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:49:44,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:49:44,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:49:44,944 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:49:44,953 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:49:44,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:49:44,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:49:44,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:49:44,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:49:44,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:49:44,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:49:44,969 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:49:44,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:49:44,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:49:44,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:49:44,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:49:44,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:49:44,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:49:44,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:49:44,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:49:44,990 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:49:44,991 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:49:44,991 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:49:44,991 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:49:44,992 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:49:44,993 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:49:45,000 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 13:49:45,054 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:49:45,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:49:45,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:49:45,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:49:45,059 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:49:45,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:49:45,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:49:45,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:49:45,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:49:45,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:49:45,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:49:45,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:49:45,061 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:49:45,061 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:49:45,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:49:45,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:49:45,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:49:45,062 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:49:45,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:49:45,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:49:45,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:49:45,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:49:45,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:49:45,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:49:45,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:49:45,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:49:45,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:49:45,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:49:45,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:49:45,065 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:49:45,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:49:45,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:49:45,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:49:45,552 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:49:45,553 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:49:45,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-29 13:49:45,624 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff4012155/277c3007511444f6a3eef149da92d884/FLAGc857bc512 [2020-10-29 13:49:46,320 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:49:46,320 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-29 13:49:46,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff4012155/277c3007511444f6a3eef149da92d884/FLAGc857bc512 [2020-10-29 13:49:46,599 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ff4012155/277c3007511444f6a3eef149da92d884 [2020-10-29 13:49:46,603 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:49:46,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:49:46,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:49:46,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:49:46,618 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:49:46,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:49:46" (1/1) ... [2020-10-29 13:49:46,625 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36eca81c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:49:46, skipping insertion in model container [2020-10-29 13:49:46,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:49:46" (1/1) ... [2020-10-29 13:49:46,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:49:46,723 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:49:47,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:49:47,248 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:49:47,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:49:47,471 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:49:47,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:49:47 WrapperNode [2020-10-29 13:49:47,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:49:47,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:49:47,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:49:47,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:49:47,487 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:49:47" (1/1) ... [2020-10-29 13:49:47,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:49:47" (1/1) ... [2020-10-29 13:49:47,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:49:47" (1/1) ... [2020-10-29 13:49:47,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:49:47" (1/1) ... [2020-10-29 13:49:47,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:49:47" (1/1) ... [2020-10-29 13:49:47,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:49:47" (1/1) ... [2020-10-29 13:49:47,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:49:47" (1/1) ... [2020-10-29 13:49:47,571 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:49:47,573 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:49:47,573 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:49:47,573 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:49:47,574 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:49:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-29 13:49:47,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:49:47,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:49:47,658 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:49:47,659 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:49:47,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:49:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:49:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:49:47,659 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:49:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:49:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:49:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:49:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:49:47,660 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:49:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:49:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:49:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:49:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:49:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:49:47,661 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:49:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:49:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:49:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:49:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:49:47,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:49:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:49:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:49:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:49:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:49:47,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:49:49,213 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:49:49,214 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:49:49,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:49:49 BoogieIcfgContainer [2020-10-29 13:49:49,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:49:49,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:49:49,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:49:49,222 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:49:49,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:49:46" (1/3) ... [2020-10-29 13:49:49,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fae1b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:49:49, skipping insertion in model container [2020-10-29 13:49:49,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:49:47" (2/3) ... [2020-10-29 13:49:49,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fae1b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:49:49, skipping insertion in model container [2020-10-29 13:49:49,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:49:49" (3/3) ... [2020-10-29 13:49:49,226 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-29 13:49:49,239 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:49:49,245 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:49:49,266 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:49:49,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:49:49,299 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:49:49,299 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:49:49,299 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:49:49,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:49:49,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:49:49,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:49:49,300 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:49:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states. [2020-10-29 13:49:49,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 13:49:49,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:49:49,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:49:49,346 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:49:49,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:49:49,353 INFO L82 PathProgramCache]: Analyzing trace with hash 2125723400, now seen corresponding path program 1 times [2020-10-29 13:49:49,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:49:49,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503268868] [2020-10-29 13:49:49,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:49:49,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:49,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:50,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:50,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:50,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:50,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:50,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:50,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:50,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:51,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:53,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:54,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:54,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 13:49:54,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:49:54,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 13:49:54,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:54,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:54,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:49:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 13:49:54,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 13:49:54,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 13:49:55,153 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:49:55,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:49:55,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:55,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:55,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:49:55,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:49:55,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:49:55,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:49:55,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:49:55,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:49:55,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:49:55,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:49:55,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:49:55,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:49:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:49:55,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503268868] [2020-10-29 13:49:55,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:49:55,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:49:55,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190394398] [2020-10-29 13:49:55,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:49:55,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:49:55,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:49:55,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:49:55,275 INFO L87 Difference]: Start difference. First operand 415 states. Second operand 4 states. [2020-10-29 13:49:55,702 WARN L193 SmtUtils]: Spent 355.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:49:58,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:49:58,922 INFO L93 Difference]: Finished difference Result 1032 states and 1665 transitions. [2020-10-29 13:49:58,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:49:58,924 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-10-29 13:49:58,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:49:58,950 INFO L225 Difference]: With dead ends: 1032 [2020-10-29 13:49:58,953 INFO L226 Difference]: Without dead ends: 748 [2020-10-29 13:49:58,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:49:58,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-10-29 13:49:59,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 727. [2020-10-29 13:49:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 727 states. [2020-10-29 13:49:59,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1168 transitions. [2020-10-29 13:49:59,096 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1168 transitions. Word has length 108 [2020-10-29 13:49:59,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:49:59,097 INFO L481 AbstractCegarLoop]: Abstraction has 727 states and 1168 transitions. [2020-10-29 13:49:59,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:49:59,097 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1168 transitions. [2020-10-29 13:49:59,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 13:49:59,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:49:59,124 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:49:59,124 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:49:59,124 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:49:59,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:49:59,130 INFO L82 PathProgramCache]: Analyzing trace with hash -1634870744, now seen corresponding path program 1 times [2020-10-29 13:49:59,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:49:59,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285464789] [2020-10-29 13:49:59,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:49:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:49:59,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:59,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:59,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:59,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:59,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:59,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:59,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:49:59,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:01,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:01,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:04,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:04,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 13:50:04,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 13:50:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:50:04,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:04,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:50:04,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 13:50:04,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 13:50:04,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:50:04,654 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:50:04,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:50:04,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:04,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:04,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:04,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:50:04,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:50:04,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:50:04,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:04,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:50:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:50:04,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:50:04,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:50:04,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:50:04,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285464789] [2020-10-29 13:50:04,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:50:04,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:50:04,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089839842] [2020-10-29 13:50:04,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:50:04,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:50:04,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:50:04,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:50:04,735 INFO L87 Difference]: Start difference. First operand 727 states and 1168 transitions. Second operand 4 states. [2020-10-29 13:50:05,094 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:50:07,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:50:07,398 INFO L93 Difference]: Finished difference Result 1812 states and 2893 transitions. [2020-10-29 13:50:07,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:50:07,398 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2020-10-29 13:50:07,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:50:07,407 INFO L225 Difference]: With dead ends: 1812 [2020-10-29 13:50:07,408 INFO L226 Difference]: Without dead ends: 1335 [2020-10-29 13:50:07,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:50:07,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2020-10-29 13:50:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1266. [2020-10-29 13:50:07,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1266 states. [2020-10-29 13:50:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 2021 transitions. [2020-10-29 13:50:07,522 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 2021 transitions. Word has length 108 [2020-10-29 13:50:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:50:07,525 INFO L481 AbstractCegarLoop]: Abstraction has 1266 states and 2021 transitions. [2020-10-29 13:50:07,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:50:07,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 2021 transitions. [2020-10-29 13:50:07,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-29 13:50:07,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:50:07,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:50:07,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:50:07,542 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:50:07,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:50:07,543 INFO L82 PathProgramCache]: Analyzing trace with hash 999382278, now seen corresponding path program 1 times [2020-10-29 13:50:07,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:50:07,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590423389] [2020-10-29 13:50:07,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:50:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:07,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:07,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:07,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:07,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:08,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:08,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:09,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:12,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:12,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:12,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 13:50:12,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:50:12,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:50:12,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:12,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:50:12,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 13:50:12,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 13:50:12,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:13,002 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:50:13,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:50:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:13,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:13,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:13,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:50:13,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:50:13,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 13:50:13,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:13,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:13,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:50:13,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:50:13,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:50:13,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:13,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:50:13,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590423389] [2020-10-29 13:50:13,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:50:13,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:50:13,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238007772] [2020-10-29 13:50:13,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:50:13,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:50:13,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:50:13,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:50:13,089 INFO L87 Difference]: Start difference. First operand 1266 states and 2021 transitions. Second operand 4 states. [2020-10-29 13:50:13,478 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:50:16,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:50:16,346 INFO L93 Difference]: Finished difference Result 2982 states and 4733 transitions. [2020-10-29 13:50:16,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:50:16,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 110 [2020-10-29 13:50:16,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:50:16,363 INFO L225 Difference]: With dead ends: 2982 [2020-10-29 13:50:16,366 INFO L226 Difference]: Without dead ends: 2239 [2020-10-29 13:50:16,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:50:16,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2239 states. [2020-10-29 13:50:16,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2239 to 2104. [2020-10-29 13:50:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2104 states. [2020-10-29 13:50:16,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 3333 transitions. [2020-10-29 13:50:16,500 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 3333 transitions. Word has length 110 [2020-10-29 13:50:16,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:50:16,500 INFO L481 AbstractCegarLoop]: Abstraction has 2104 states and 3333 transitions. [2020-10-29 13:50:16,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:50:16,501 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 3333 transitions. [2020-10-29 13:50:16,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-29 13:50:16,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:50:16,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:50:16,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:50:16,508 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:50:16,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:50:16,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1311569318, now seen corresponding path program 1 times [2020-10-29 13:50:16,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:50:16,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1665244825] [2020-10-29 13:50:16,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:50:16,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:16,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:16,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:16,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:16,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:16,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:16,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:18,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:20,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:21,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:21,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 13:50:21,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:50:21,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 13:50:21,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:21,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:50:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 13:50:21,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 13:50:21,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:50:22,091 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:50:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:50:22,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:22,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:22,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:22,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:50:22,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:50:22,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:50:22,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:22,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:22,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:50:22,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:50:22,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:50:22,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:22,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:50:22,151 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1665244825] [2020-10-29 13:50:22,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:50:22,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:50:22,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157315434] [2020-10-29 13:50:22,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:50:22,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:50:22,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:50:22,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:50:22,155 INFO L87 Difference]: Start difference. First operand 2104 states and 3333 transitions. Second operand 4 states. [2020-10-29 13:50:22,544 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:50:24,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:50:24,714 INFO L93 Difference]: Finished difference Result 5362 states and 8453 transitions. [2020-10-29 13:50:24,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:50:24,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2020-10-29 13:50:24,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:50:24,738 INFO L225 Difference]: With dead ends: 5362 [2020-10-29 13:50:24,739 INFO L226 Difference]: Without dead ends: 3927 [2020-10-29 13:50:24,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:50:24,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3927 states. [2020-10-29 13:50:24,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3927 to 3660. [2020-10-29 13:50:24,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3660 states. [2020-10-29 13:50:24,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3660 states to 3660 states and 5749 transitions. [2020-10-29 13:50:24,961 INFO L78 Accepts]: Start accepts. Automaton has 3660 states and 5749 transitions. Word has length 112 [2020-10-29 13:50:24,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:50:24,962 INFO L481 AbstractCegarLoop]: Abstraction has 3660 states and 5749 transitions. [2020-10-29 13:50:24,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:50:24,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3660 states and 5749 transitions. [2020-10-29 13:50:24,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 13:50:24,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:50:24,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:50:24,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:50:24,973 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:50:24,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:50:24,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1494794448, now seen corresponding path program 1 times [2020-10-29 13:50:24,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:50:24,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905339441] [2020-10-29 13:50:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:50:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:25,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:25,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:25,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:25,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:25,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:26,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:30,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:30,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 13:50:30,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:50:30,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 13:50:30,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:30,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:50:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 13:50:30,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 13:50:30,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:50:30,411 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:50:30,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:50:30,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:30,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:30,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:30,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:50:30,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:50:30,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:50:30,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:30,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:50:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:50:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:50:30,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:30,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:50:30,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905339441] [2020-10-29 13:50:30,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:50:30,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:50:30,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536555154] [2020-10-29 13:50:30,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:50:30,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:50:30,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:50:30,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:50:30,488 INFO L87 Difference]: Start difference. First operand 3660 states and 5749 transitions. Second operand 4 states. [2020-10-29 13:50:30,828 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-29 13:50:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:50:33,438 INFO L93 Difference]: Finished difference Result 8650 states and 13497 transitions. [2020-10-29 13:50:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:50:33,439 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2020-10-29 13:50:33,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:50:33,472 INFO L225 Difference]: With dead ends: 8650 [2020-10-29 13:50:33,472 INFO L226 Difference]: Without dead ends: 6487 [2020-10-29 13:50:33,478 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:50:33,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6487 states. [2020-10-29 13:50:33,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6487 to 5956. [2020-10-29 13:50:33,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5956 states. [2020-10-29 13:50:33,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 9237 transitions. [2020-10-29 13:50:33,806 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 9237 transitions. Word has length 114 [2020-10-29 13:50:33,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:50:33,806 INFO L481 AbstractCegarLoop]: Abstraction has 5956 states and 9237 transitions. [2020-10-29 13:50:33,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:50:33,806 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 9237 transitions. [2020-10-29 13:50:33,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-29 13:50:33,823 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:50:33,823 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:50:33,824 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:50:33,824 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:50:33,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:50:33,825 INFO L82 PathProgramCache]: Analyzing trace with hash 903129330, now seen corresponding path program 1 times [2020-10-29 13:50:33,825 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:50:33,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [638636025] [2020-10-29 13:50:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:50:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:33,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:33,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:34,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:38,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:38,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-29 13:50:38,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:50:38,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4698 [2020-10-29 13:50:38,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:38,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:38,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:50:38,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 13:50:38,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 13:50:38,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:38,952 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:50:38,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:50:38,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:38,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:38,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:38,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:50:38,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:50:38,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:50:38,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:38,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:38,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:50:38,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:50:38,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:50:38,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:50:39,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [638636025] [2020-10-29 13:50:39,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:50:39,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:50:39,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061633480] [2020-10-29 13:50:39,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:50:39,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:50:39,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:50:39,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:50:39,002 INFO L87 Difference]: Start difference. First operand 5956 states and 9237 transitions. Second operand 5 states. [2020-10-29 13:50:41,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:50:41,212 INFO L93 Difference]: Finished difference Result 11191 states and 17287 transitions. [2020-10-29 13:50:41,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:50:41,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-29 13:50:41,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:50:41,244 INFO L225 Difference]: With dead ends: 11191 [2020-10-29 13:50:41,244 INFO L226 Difference]: Without dead ends: 5956 [2020-10-29 13:50:41,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:50:41,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5956 states. [2020-10-29 13:50:41,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5956 to 5956. [2020-10-29 13:50:41,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5956 states. [2020-10-29 13:50:41,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5956 states to 5956 states and 9173 transitions. [2020-10-29 13:50:41,654 INFO L78 Accepts]: Start accepts. Automaton has 5956 states and 9173 transitions. Word has length 116 [2020-10-29 13:50:41,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:50:41,654 INFO L481 AbstractCegarLoop]: Abstraction has 5956 states and 9173 transitions. [2020-10-29 13:50:41,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:50:41,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5956 states and 9173 transitions. [2020-10-29 13:50:41,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 13:50:41,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:50:41,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:50:41,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:50:41,673 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:50:41,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:50:41,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1360100870, now seen corresponding path program 1 times [2020-10-29 13:50:41,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:50:41,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557110349] [2020-10-29 13:50:41,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:50:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:41,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:41,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:41,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:41,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:41,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:43,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:43,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:43,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 13:50:43,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:50:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2241 [2020-10-29 13:50:43,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:43,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:50:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-29 13:50:43,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 13:50:43,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:44,268 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:50:44,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:50:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:44,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:44,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:44,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:50:44,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:50:44,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:50:44,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:44,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:50:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:50:44,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:50:44,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:44,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:50:44,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557110349] [2020-10-29 13:50:44,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:50:44,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:50:44,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972373190] [2020-10-29 13:50:44,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:50:44,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:50:44,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:50:44,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:50:44,341 INFO L87 Difference]: Start difference. First operand 5956 states and 9173 transitions. Second operand 4 states. [2020-10-29 13:50:44,679 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:50:46,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:50:46,883 INFO L93 Difference]: Finished difference Result 13939 states and 21367 transitions. [2020-10-29 13:50:46,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:50:46,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 117 [2020-10-29 13:50:46,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:50:46,930 INFO L225 Difference]: With dead ends: 13939 [2020-10-29 13:50:46,930 INFO L226 Difference]: Without dead ends: 10416 [2020-10-29 13:50:46,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:50:46,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10416 states. [2020-10-29 13:50:47,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10416 to 10413. [2020-10-29 13:50:47,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10413 states. [2020-10-29 13:50:47,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10413 states to 10413 states and 15859 transitions. [2020-10-29 13:50:47,456 INFO L78 Accepts]: Start accepts. Automaton has 10413 states and 15859 transitions. Word has length 117 [2020-10-29 13:50:47,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:50:47,457 INFO L481 AbstractCegarLoop]: Abstraction has 10413 states and 15859 transitions. [2020-10-29 13:50:47,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:50:47,457 INFO L276 IsEmpty]: Start isEmpty. Operand 10413 states and 15859 transitions. [2020-10-29 13:50:47,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 13:50:47,485 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:50:47,485 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:50:47,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:50:47,486 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:50:47,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:50:47,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1315292908, now seen corresponding path program 1 times [2020-10-29 13:50:47,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:50:47,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952489620] [2020-10-29 13:50:47,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:50:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:47,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:47,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:47,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:47,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:47,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:48,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:52,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:52,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 13:50:52,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:50:52,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 13:50:52,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:52,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:50:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 13:50:52,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 13:50:52,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:52,841 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:50:52,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:50:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:52,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:52,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:52,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:50:52,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:50:52,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:50:52,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:52,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:50:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:50:52,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:50:52,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:50:52,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952489620] [2020-10-29 13:50:52,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:50:52,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:50:52,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208940659] [2020-10-29 13:50:52,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:50:52,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:50:52,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:50:52,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:50:52,892 INFO L87 Difference]: Start difference. First operand 10413 states and 15859 transitions. Second operand 4 states. [2020-10-29 13:50:53,242 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:50:56,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:50:56,223 INFO L93 Difference]: Finished difference Result 29945 states and 45450 transitions. [2020-10-29 13:50:56,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:50:56,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-29 13:50:56,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:50:56,273 INFO L225 Difference]: With dead ends: 29945 [2020-10-29 13:50:56,274 INFO L226 Difference]: Without dead ends: 19661 [2020-10-29 13:50:56,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:50:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19661 states. [2020-10-29 13:50:57,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19661 to 19658. [2020-10-29 13:50:57,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19658 states. [2020-10-29 13:50:57,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19658 states to 19658 states and 29616 transitions. [2020-10-29 13:50:57,177 INFO L78 Accepts]: Start accepts. Automaton has 19658 states and 29616 transitions. Word has length 120 [2020-10-29 13:50:57,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:50:57,177 INFO L481 AbstractCegarLoop]: Abstraction has 19658 states and 29616 transitions. [2020-10-29 13:50:57,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:50:57,177 INFO L276 IsEmpty]: Start isEmpty. Operand 19658 states and 29616 transitions. [2020-10-29 13:50:57,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 13:50:57,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:50:57,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:50:57,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:50:57,213 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:50:57,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:50:57,213 INFO L82 PathProgramCache]: Analyzing trace with hash -745061252, now seen corresponding path program 1 times [2020-10-29 13:50:57,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:50:57,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358006042] [2020-10-29 13:50:57,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:50:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:57,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:57,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:57,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 13:50:57,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:50:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-10-29 13:50:57,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:57,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:50:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-29 13:50:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 13:50:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:58,198 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:50:58,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:50:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:50:58,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:50:58,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:50:58,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:50:58,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:50:58,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:50:58,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:50:58,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:50:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:50:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:50:58,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:50:58,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:50:58,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:50:58,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358006042] [2020-10-29 13:50:58,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:50:58,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:50:58,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664332158] [2020-10-29 13:50:58,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:50:58,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:50:58,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:50:58,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:50:58,236 INFO L87 Difference]: Start difference. First operand 19658 states and 29616 transitions. Second operand 5 states. [2020-10-29 13:51:01,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:51:01,298 INFO L93 Difference]: Finished difference Result 25113 states and 37780 transitions. [2020-10-29 13:51:01,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:51:01,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-29 13:51:01,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:51:01,347 INFO L225 Difference]: With dead ends: 25113 [2020-10-29 13:51:01,347 INFO L226 Difference]: Without dead ends: 25110 [2020-10-29 13:51:01,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:51:01,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25110 states. [2020-10-29 13:51:02,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25110 to 19786. [2020-10-29 13:51:02,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19786 states. [2020-10-29 13:51:02,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19786 states to 19786 states and 29744 transitions. [2020-10-29 13:51:02,623 INFO L78 Accepts]: Start accepts. Automaton has 19786 states and 29744 transitions. Word has length 120 [2020-10-29 13:51:02,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:51:02,623 INFO L481 AbstractCegarLoop]: Abstraction has 19786 states and 29744 transitions. [2020-10-29 13:51:02,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:51:02,624 INFO L276 IsEmpty]: Start isEmpty. Operand 19786 states and 29744 transitions. [2020-10-29 13:51:02,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 13:51:02,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:51:02,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:51:02,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:51:02,655 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:51:02,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:51:02,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1636432289, now seen corresponding path program 1 times [2020-10-29 13:51:02,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:51:02,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592134534] [2020-10-29 13:51:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:51:02,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:02,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:02,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:02,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:03,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:05,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:07,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:07,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 13:51:07,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:51:07,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 13:51:07,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:07,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:51:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 13:51:07,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 13:51:07,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:07,999 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:51:08,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:51:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:08,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:08,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:08,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:51:08,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:51:08,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:51:08,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:08,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:51:08,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:51:08,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:51:08,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:08,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:51:08,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592134534] [2020-10-29 13:51:08,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:51:08,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:51:08,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427876355] [2020-10-29 13:51:08,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:51:08,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:51:08,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:51:08,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:51:08,035 INFO L87 Difference]: Start difference. First operand 19786 states and 29744 transitions. Second operand 4 states. [2020-10-29 13:51:13,056 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:51:13,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:51:13,074 INFO L93 Difference]: Finished difference Result 54008 states and 80844 transitions. [2020-10-29 13:51:13,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:51:13,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-29 13:51:13,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:51:13,137 INFO L225 Difference]: With dead ends: 54008 [2020-10-29 13:51:13,138 INFO L226 Difference]: Without dead ends: 37175 [2020-10-29 13:51:13,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:51:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37175 states. [2020-10-29 13:51:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37175 to 37172. [2020-10-29 13:51:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37172 states. [2020-10-29 13:51:15,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37172 states to 37172 states and 55244 transitions. [2020-10-29 13:51:15,025 INFO L78 Accepts]: Start accepts. Automaton has 37172 states and 55244 transitions. Word has length 120 [2020-10-29 13:51:15,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:51:15,025 INFO L481 AbstractCegarLoop]: Abstraction has 37172 states and 55244 transitions. [2020-10-29 13:51:15,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:51:15,025 INFO L276 IsEmpty]: Start isEmpty. Operand 37172 states and 55244 transitions. [2020-10-29 13:51:15,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 13:51:15,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:51:15,072 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:51:15,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:51:15,073 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:51:15,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:51:15,073 INFO L82 PathProgramCache]: Analyzing trace with hash -252188600, now seen corresponding path program 1 times [2020-10-29 13:51:15,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:51:15,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112223721] [2020-10-29 13:51:15,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:51:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:15,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:15,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:15,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:15,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:16,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:20,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:20,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 13:51:20,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:51:20,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:51:20,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:20,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:51:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:51:20,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 13:51:20,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:20,464 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:51:20,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:51:20,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:20,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:20,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:20,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:51:20,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:51:20,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:51:20,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:20,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:51:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:51:20,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:51:20,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:51:20,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112223721] [2020-10-29 13:51:20,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:51:20,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:51:20,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039607616] [2020-10-29 13:51:20,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:51:20,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:51:20,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:51:20,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:51:20,500 INFO L87 Difference]: Start difference. First operand 37172 states and 55244 transitions. Second operand 6 states. [2020-10-29 13:51:27,613 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:51:28,242 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:51:28,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:51:28,911 INFO L93 Difference]: Finished difference Result 138274 states and 204786 transitions. [2020-10-29 13:51:28,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:51:28,911 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-29 13:51:28,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:51:29,112 INFO L225 Difference]: With dead ends: 138274 [2020-10-29 13:51:29,113 INFO L226 Difference]: Without dead ends: 105022 [2020-10-29 13:51:29,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:51:29,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105022 states. [2020-10-29 13:51:32,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105022 to 40156. [2020-10-29 13:51:32,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40156 states. [2020-10-29 13:51:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40156 states to 40156 states and 58755 transitions. [2020-10-29 13:51:32,374 INFO L78 Accepts]: Start accepts. Automaton has 40156 states and 58755 transitions. Word has length 120 [2020-10-29 13:51:32,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:51:32,375 INFO L481 AbstractCegarLoop]: Abstraction has 40156 states and 58755 transitions. [2020-10-29 13:51:32,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:51:32,375 INFO L276 IsEmpty]: Start isEmpty. Operand 40156 states and 58755 transitions. [2020-10-29 13:51:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 13:51:32,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:51:32,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:51:32,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:51:32,431 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:51:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:51:32,432 INFO L82 PathProgramCache]: Analyzing trace with hash -841187033, now seen corresponding path program 1 times [2020-10-29 13:51:32,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:51:32,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825004108] [2020-10-29 13:51:32,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:51:32,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:32,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:32,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:32,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:32,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:34,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:37,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:37,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 13:51:37,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:51:37,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:51:37,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:37,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:51:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:51:37,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 13:51:37,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:37,834 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:51:37,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:51:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:37,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:37,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:37,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:51:37,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:51:37,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:51:37,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:37,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:37,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:51:37,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:51:37,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:51:37,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:51:37,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825004108] [2020-10-29 13:51:37,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:51:37,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:51:37,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105569548] [2020-10-29 13:51:37,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:51:37,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:51:37,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:51:37,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:51:37,872 INFO L87 Difference]: Start difference. First operand 40156 states and 58755 transitions. Second operand 6 states. [2020-10-29 13:51:45,920 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:51:46,495 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:51:46,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:51:46,817 INFO L93 Difference]: Finished difference Result 133156 states and 193291 transitions. [2020-10-29 13:51:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:51:46,818 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2020-10-29 13:51:46,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:51:46,954 INFO L225 Difference]: With dead ends: 133156 [2020-10-29 13:51:46,955 INFO L226 Difference]: Without dead ends: 96648 [2020-10-29 13:51:47,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:51:47,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96648 states. [2020-10-29 13:51:50,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96648 to 42177. [2020-10-29 13:51:50,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42177 states. [2020-10-29 13:51:50,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42177 states to 42177 states and 61146 transitions. [2020-10-29 13:51:50,481 INFO L78 Accepts]: Start accepts. Automaton has 42177 states and 61146 transitions. Word has length 120 [2020-10-29 13:51:50,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:51:50,482 INFO L481 AbstractCegarLoop]: Abstraction has 42177 states and 61146 transitions. [2020-10-29 13:51:50,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:51:50,482 INFO L276 IsEmpty]: Start isEmpty. Operand 42177 states and 61146 transitions. [2020-10-29 13:51:50,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-29 13:51:50,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:51:50,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:51:50,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:51:50,525 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:51:50,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:51:50,526 INFO L82 PathProgramCache]: Analyzing trace with hash 225163968, now seen corresponding path program 1 times [2020-10-29 13:51:50,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:51:50,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498252975] [2020-10-29 13:51:50,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:51:50,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:50,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:50,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:50,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:50,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:51,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:55,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:55,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-29 13:51:55,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:51:55,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 13:51:55,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:55,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:55,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:51:55,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 13:51:55,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 13:51:55,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:55,896 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:51:55,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:51:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:51:55,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:51:55,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:51:55,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:51:55,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:51:55,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:51:55,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:51:55,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:51:55,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:51:55,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:51:55,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:51:55,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:51:55,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:51:55,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498252975] [2020-10-29 13:51:55,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:51:55,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:51:55,929 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106183412] [2020-10-29 13:51:55,930 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:51:55,930 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:51:55,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:51:55,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:51:55,931 INFO L87 Difference]: Start difference. First operand 42177 states and 61146 transitions. Second operand 4 states. [2020-10-29 13:51:56,298 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:52:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:03,310 INFO L93 Difference]: Finished difference Result 119993 states and 173495 transitions. [2020-10-29 13:52:03,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:52:03,311 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 120 [2020-10-29 13:52:03,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:03,406 INFO L225 Difference]: With dead ends: 119993 [2020-10-29 13:52:03,406 INFO L226 Difference]: Without dead ends: 79868 [2020-10-29 13:52:03,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:52:03,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79868 states. [2020-10-29 13:52:08,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79868 to 79865. [2020-10-29 13:52:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79865 states. [2020-10-29 13:52:08,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79865 states to 79865 states and 114689 transitions. [2020-10-29 13:52:08,598 INFO L78 Accepts]: Start accepts. Automaton has 79865 states and 114689 transitions. Word has length 120 [2020-10-29 13:52:08,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:08,599 INFO L481 AbstractCegarLoop]: Abstraction has 79865 states and 114689 transitions. [2020-10-29 13:52:08,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:52:08,599 INFO L276 IsEmpty]: Start isEmpty. Operand 79865 states and 114689 transitions. [2020-10-29 13:52:08,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 13:52:08,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:08,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:52:08,683 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:52:08,683 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:08,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:08,683 INFO L82 PathProgramCache]: Analyzing trace with hash 192131397, now seen corresponding path program 1 times [2020-10-29 13:52:08,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:08,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521203607] [2020-10-29 13:52:08,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:08,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:08,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:08,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:08,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:08,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:09,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:12,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:12,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 13:52:12,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:52:12,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3832 [2020-10-29 13:52:12,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:12,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:52:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 13:52:12,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 13:52:12,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:12,908 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:52:12,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:12,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:12,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:12,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:12,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:12,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:52:12,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:12,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:12,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:12,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:12,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:12,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:12,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:52:12,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521203607] [2020-10-29 13:52:12,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:12,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:52:12,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969711147] [2020-10-29 13:52:12,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:52:12,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:12,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:52:12,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:52:12,956 INFO L87 Difference]: Start difference. First operand 79865 states and 114689 transitions. Second operand 6 states. [2020-10-29 13:52:23,763 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:52:24,934 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:52:26,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:26,485 INFO L93 Difference]: Finished difference Result 191559 states and 273954 transitions. [2020-10-29 13:52:26,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:52:26,486 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-29 13:52:26,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:26,857 INFO L225 Difference]: With dead ends: 191559 [2020-10-29 13:52:26,857 INFO L226 Difference]: Without dead ends: 163594 [2020-10-29 13:52:26,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:52:27,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163594 states. [2020-10-29 13:52:33,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163594 to 84446. [2020-10-29 13:52:33,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84446 states. [2020-10-29 13:52:33,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84446 states to 84446 states and 120925 transitions. [2020-10-29 13:52:33,506 INFO L78 Accepts]: Start accepts. Automaton has 84446 states and 120925 transitions. Word has length 121 [2020-10-29 13:52:33,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:33,507 INFO L481 AbstractCegarLoop]: Abstraction has 84446 states and 120925 transitions. [2020-10-29 13:52:33,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:52:33,507 INFO L276 IsEmpty]: Start isEmpty. Operand 84446 states and 120925 transitions. [2020-10-29 13:52:33,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 13:52:33,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:33,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:52:33,594 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:52:33,594 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:33,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:33,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1324862139, now seen corresponding path program 1 times [2020-10-29 13:52:33,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:33,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180753802] [2020-10-29 13:52:33,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:33,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:33,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:33,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:34,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:34,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 13:52:34,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:52:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-29 13:52:34,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:34,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:52:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 93 [2020-10-29 13:52:34,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 13:52:34,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:34,443 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:52:34,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:34,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:34,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:34,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:34,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:34,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 13:52:34,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:34,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:34,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:34,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:34,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:34,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:52:34,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180753802] [2020-10-29 13:52:34,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:34,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 13:52:34,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474816149] [2020-10-29 13:52:34,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 13:52:34,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:34,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 13:52:34,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 13:52:34,595 INFO L87 Difference]: Start difference. First operand 84446 states and 120925 transitions. Second operand 4 states. [2020-10-29 13:52:34,936 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:52:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:45,178 INFO L93 Difference]: Finished difference Result 203240 states and 289767 transitions. [2020-10-29 13:52:45,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 13:52:45,178 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2020-10-29 13:52:45,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:45,363 INFO L225 Difference]: With dead ends: 203240 [2020-10-29 13:52:45,363 INFO L226 Difference]: Without dead ends: 126450 [2020-10-29 13:52:45,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:52:45,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126450 states. [2020-10-29 13:52:53,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126450 to 126447. [2020-10-29 13:52:53,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126447 states. [2020-10-29 13:52:53,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126447 states to 126447 states and 179348 transitions. [2020-10-29 13:52:53,754 INFO L78 Accepts]: Start accepts. Automaton has 126447 states and 179348 transitions. Word has length 121 [2020-10-29 13:52:53,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:53,754 INFO L481 AbstractCegarLoop]: Abstraction has 126447 states and 179348 transitions. [2020-10-29 13:52:53,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 13:52:53,754 INFO L276 IsEmpty]: Start isEmpty. Operand 126447 states and 179348 transitions. [2020-10-29 13:52:54,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 13:52:54,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:54,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:52:54,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:52:54,222 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:54,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:54,223 INFO L82 PathProgramCache]: Analyzing trace with hash 164485612, now seen corresponding path program 1 times [2020-10-29 13:52:54,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:54,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993960392] [2020-10-29 13:52:54,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:54,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:54,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:54,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:54,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:54,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:57,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:57,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 13:52:57,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 13:52:57,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3504 [2020-10-29 13:52:57,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:57,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:57,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:52:57,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-29 13:52:57,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 13:52:57,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:58,139 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:52:58,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:58,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:58,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:58,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:58,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:58,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:52:58,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:58,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:58,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:58,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:58,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:52:58,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993960392] [2020-10-29 13:52:58,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:58,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:52:58,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149504281] [2020-10-29 13:52:58,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:52:58,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:58,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:52:58,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:52:58,179 INFO L87 Difference]: Start difference. First operand 126447 states and 179348 transitions. Second operand 6 states. [2020-10-29 13:53:14,580 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:53:15,774 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:53:20,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:20,299 INFO L93 Difference]: Finished difference Result 327248 states and 465409 transitions. [2020-10-29 13:53:20,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 13:53:20,300 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 121 [2020-10-29 13:53:20,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:20,770 INFO L225 Difference]: With dead ends: 327248 [2020-10-29 13:53:20,770 INFO L226 Difference]: Without dead ends: 286989 [2020-10-29 13:53:20,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 13:53:21,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286989 states.