/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:16:32,488 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:16:32,493 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:16:32,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:16:32,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:16:32,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:16:32,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:16:32,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:16:32,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:16:32,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:16:32,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:16:32,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:16:32,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:16:32,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:16:32,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:16:32,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:16:32,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:16:32,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:16:32,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:16:32,605 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:16:32,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:16:32,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:16:32,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:16:32,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:16:32,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:16:32,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:16:32,613 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:16:32,614 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:16:32,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:16:32,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:16:32,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:16:32,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:16:32,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:16:32,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:16:32,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:16:32,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:16:32,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:16:32,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:16:32,622 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:16:32,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:16:32,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:16:32,624 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 [2020-10-28 19:16:32,651 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:16:32,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:16:32,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:16:32,653 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:16:32,653 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:16:32,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:16:32,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:16:32,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:16:32,654 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:16:32,654 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:16:32,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:16:32,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:16:32,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:16:32,655 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:16:32,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:16:32,655 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:16:32,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:16:32,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:16:32,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:16:32,656 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:16:32,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:16:32,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:16:32,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:16:32,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:16:32,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:16:32,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:16:32,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:16:32,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:16:32,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:16:32,658 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:16:33,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:16:33,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:16:33,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:16:33,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:16:33,086 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:16:33,087 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 19:16:33,175 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c13c147ec/f135bb6ae0784361a675cc88feb2cf88/FLAGac07e3c93 [2020-10-28 19:16:33,966 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:16:33,967 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 19:16:33,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c13c147ec/f135bb6ae0784361a675cc88feb2cf88/FLAGac07e3c93 [2020-10-28 19:16:34,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c13c147ec/f135bb6ae0784361a675cc88feb2cf88 [2020-10-28 19:16:34,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:16:34,245 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:16:34,247 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:16:34,247 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:16:34,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:16:34,252 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:16:34" (1/1) ... [2020-10-28 19:16:34,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@242af7e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:34, skipping insertion in model container [2020-10-28 19:16:34,259 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:16:34" (1/1) ... [2020-10-28 19:16:34,268 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:16:34,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:16:34,923 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:16:34,939 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:16:35,201 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:16:35,225 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:16:35,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:35 WrapperNode [2020-10-28 19:16:35,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:16:35,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:16:35,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:16:35,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:16:35,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:35" (1/1) ... [2020-10-28 19:16:35,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:35" (1/1) ... [2020-10-28 19:16:35,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:35" (1/1) ... [2020-10-28 19:16:35,265 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:35" (1/1) ... [2020-10-28 19:16:35,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:35" (1/1) ... [2020-10-28 19:16:35,360 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:35" (1/1) ... [2020-10-28 19:16:35,372 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:35" (1/1) ... [2020-10-28 19:16:35,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:16:35,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:16:35,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:16:35,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:16:35,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:35" (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 [2020-10-28 19:16:35,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:16:35,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:16:35,483 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:16:35,483 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:16:35,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:16:35,483 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:16:35,483 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:16:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:16:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:16:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:16:35,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:16:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:16:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:16:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:16:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:16:35,485 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:16:35,486 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:16:35,486 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:16:35,486 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:16:35,486 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:16:35,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:16:35,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:16:35,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:16:35,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:16:35,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:16:35,487 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:16:35,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:16:36,905 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:16:36,906 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:16:36,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:16:36 BoogieIcfgContainer [2020-10-28 19:16:36,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:16:36,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:16:36,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:16:36,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:16:36,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:16:34" (1/3) ... [2020-10-28 19:16:36,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491b0a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:16:36, skipping insertion in model container [2020-10-28 19:16:36,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:16:35" (2/3) ... [2020-10-28 19:16:36,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491b0a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:16:36, skipping insertion in model container [2020-10-28 19:16:36,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:16:36" (3/3) ... [2020-10-28 19:16:36,917 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 19:16:36,929 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:16:36,935 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:16:36,948 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:16:36,979 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:16:36,979 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:16:36,980 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:16:36,980 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:16:36,980 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:16:36,980 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:16:36,980 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:16:36,980 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:16:37,006 INFO L276 IsEmpty]: Start isEmpty. Operand 346 states. [2020-10-28 19:16:37,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 19:16:37,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:37,025 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:37,025 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:37,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:37,032 INFO L82 PathProgramCache]: Analyzing trace with hash -796746938, now seen corresponding path program 1 times [2020-10-28 19:16:37,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:37,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912230947] [2020-10-28 19:16:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:37,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:37,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:38,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:38,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:38,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:39,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:39,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:39,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:39,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:40,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:41,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:41,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:42,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:42,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 19:16:42,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:16:42,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 19:16:42,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:42,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:16:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 19:16:42,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 19:16:42,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 19:16:43,051 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:43,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:43,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:43,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:43,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:43,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:43,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 19:16:43,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:43,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:43,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:43,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:43,153 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912230947] [2020-10-28 19:16:43,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:43,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:16:43,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297814662] [2020-10-28 19:16:43,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:16:43,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:43,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:16:43,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:16:43,188 INFO L87 Difference]: Start difference. First operand 346 states. Second operand 4 states. [2020-10-28 19:16:43,580 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 19:16:45,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:45,591 INFO L93 Difference]: Finished difference Result 693 states and 1200 transitions. [2020-10-28 19:16:45,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:16:45,594 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-28 19:16:45,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:45,639 INFO L225 Difference]: With dead ends: 693 [2020-10-28 19:16:45,639 INFO L226 Difference]: Without dead ends: 556 [2020-10-28 19:16:45,648 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 [2020-10-28 19:16:45,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2020-10-28 19:16:45,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 553. [2020-10-28 19:16:45,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 553 states. [2020-10-28 19:16:45,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 826 transitions. [2020-10-28 19:16:45,797 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 826 transitions. Word has length 158 [2020-10-28 19:16:45,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:45,798 INFO L481 AbstractCegarLoop]: Abstraction has 553 states and 826 transitions. [2020-10-28 19:16:45,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:16:45,799 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 826 transitions. [2020-10-28 19:16:45,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 19:16:45,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:45,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:45,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:16:45,813 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:45,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:45,814 INFO L82 PathProgramCache]: Analyzing trace with hash -113561026, now seen corresponding path program 1 times [2020-10-28 19:16:45,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:45,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118743862] [2020-10-28 19:16:45,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:45,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:46,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:46,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:46,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:46,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:46,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:46,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:46,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:47,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:48,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:48,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:48,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:48,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:50,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:50,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 19:16:50,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 19:16:50,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 19:16:50,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:50,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 19:16:50,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:16:51,359 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:16:51,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:51,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:51,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:51,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:51,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:51,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:16:51,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:51,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:51,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:51,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:51,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:51,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:16:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:51,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118743862] [2020-10-28 19:16:51,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:51,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:51,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984050585] [2020-10-28 19:16:51,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:16:51,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:51,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:16:51,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:51,475 INFO L87 Difference]: Start difference. First operand 553 states and 826 transitions. Second operand 5 states. [2020-10-28 19:16:53,624 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:16:54,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:54,642 INFO L93 Difference]: Finished difference Result 1585 states and 2358 transitions. [2020-10-28 19:16:54,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:16:54,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-28 19:16:54,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:54,651 INFO L225 Difference]: With dead ends: 1585 [2020-10-28 19:16:54,652 INFO L226 Difference]: Without dead ends: 1055 [2020-10-28 19:16:54,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:16:54,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1055 states. [2020-10-28 19:16:54,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1055 to 1052. [2020-10-28 19:16:54,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2020-10-28 19:16:54,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1553 transitions. [2020-10-28 19:16:54,720 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1553 transitions. Word has length 158 [2020-10-28 19:16:54,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:54,721 INFO L481 AbstractCegarLoop]: Abstraction has 1052 states and 1553 transitions. [2020-10-28 19:16:54,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:16:54,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1553 transitions. [2020-10-28 19:16:54,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 19:16:54,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:54,726 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:54,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:16:54,726 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:54,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:54,727 INFO L82 PathProgramCache]: Analyzing trace with hash -21083451, now seen corresponding path program 1 times [2020-10-28 19:16:54,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:54,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088968526] [2020-10-28 19:16:54,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:54,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:55,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:56,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:57,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:57,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:57,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:58,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:58,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:59,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:59,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:59,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 19:16:59,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 19:16:59,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 19:16:59,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:59,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:59,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:16:59,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:16:59,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 19:16:59,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:17:00,184 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:00,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:00,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:00,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:00,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:00,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:00,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:17:00,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:00,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:00,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:00,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:00,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:00,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:00,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:00,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088968526] [2020-10-28 19:17:00,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:00,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:00,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161020170] [2020-10-28 19:17:00,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:00,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:00,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:00,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:00,299 INFO L87 Difference]: Start difference. First operand 1052 states and 1553 transitions. Second operand 5 states. [2020-10-28 19:17:02,480 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:17:03,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:03,437 INFO L93 Difference]: Finished difference Result 3048 states and 4484 transitions. [2020-10-28 19:17:03,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:03,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-28 19:17:03,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:03,449 INFO L225 Difference]: With dead ends: 3048 [2020-10-28 19:17:03,449 INFO L226 Difference]: Without dead ends: 2029 [2020-10-28 19:17:03,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:03,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2029 states. [2020-10-28 19:17:03,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2029 to 2026. [2020-10-28 19:17:03,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2026 states. [2020-10-28 19:17:03,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2026 states to 2026 states and 2956 transitions. [2020-10-28 19:17:03,567 INFO L78 Accepts]: Start accepts. Automaton has 2026 states and 2956 transitions. Word has length 159 [2020-10-28 19:17:03,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:03,567 INFO L481 AbstractCegarLoop]: Abstraction has 2026 states and 2956 transitions. [2020-10-28 19:17:03,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:03,568 INFO L276 IsEmpty]: Start isEmpty. Operand 2026 states and 2956 transitions. [2020-10-28 19:17:03,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 19:17:03,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:03,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:03,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:17:03,574 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:03,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:03,574 INFO L82 PathProgramCache]: Analyzing trace with hash 978006303, now seen corresponding path program 1 times [2020-10-28 19:17:03,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:03,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760885295] [2020-10-28 19:17:03,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:03,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:03,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:03,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:04,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:05,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:06,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:06,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:06,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:08,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:08,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 19:17:08,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 19:17:08,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 19:17:08,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:08,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:08,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 19:17:08,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:09,051 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:09,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:09,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:09,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:09,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:09,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:09,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 19:17:09,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:09,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:09,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:09,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:09,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:09,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760885295] [2020-10-28 19:17:09,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:09,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:09,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582991961] [2020-10-28 19:17:09,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:09,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:09,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:09,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:09,254 INFO L87 Difference]: Start difference. First operand 2026 states and 2956 transitions. Second operand 5 states. [2020-10-28 19:17:11,265 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:17:12,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:12,297 INFO L93 Difference]: Finished difference Result 5886 states and 8550 transitions. [2020-10-28 19:17:12,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:12,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-28 19:17:12,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:12,319 INFO L225 Difference]: With dead ends: 5886 [2020-10-28 19:17:12,319 INFO L226 Difference]: Without dead ends: 3889 [2020-10-28 19:17:12,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:12,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3889 states. [2020-10-28 19:17:12,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3889 to 3886. [2020-10-28 19:17:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3886 states. [2020-10-28 19:17:12,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3886 states to 3886 states and 5588 transitions. [2020-10-28 19:17:12,531 INFO L78 Accepts]: Start accepts. Automaton has 3886 states and 5588 transitions. Word has length 160 [2020-10-28 19:17:12,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:12,531 INFO L481 AbstractCegarLoop]: Abstraction has 3886 states and 5588 transitions. [2020-10-28 19:17:12,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:12,532 INFO L276 IsEmpty]: Start isEmpty. Operand 3886 states and 5588 transitions. [2020-10-28 19:17:12,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 19:17:12,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:12,540 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:12,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:17:12,540 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:12,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:12,541 INFO L82 PathProgramCache]: Analyzing trace with hash 1908133477, now seen corresponding path program 1 times [2020-10-28 19:17:12,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:12,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064051465] [2020-10-28 19:17:12,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:12,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:12,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:12,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:12,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:12,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:12,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:13,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:15,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:17,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:17,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 19:17:17,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:17:17,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 19:17:17,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:17,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:17,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:17,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:17,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 19:17:17,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 19 [2020-10-28 19:17:18,060 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:18,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:18,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:18,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:18,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:18,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:18,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:17:18,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:18,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:18,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:18,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:18,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:18,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064051465] [2020-10-28 19:17:18,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:18,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:18,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360543545] [2020-10-28 19:17:18,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:18,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:18,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:18,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:18,176 INFO L87 Difference]: Start difference. First operand 3886 states and 5588 transitions. Second operand 5 states. [2020-10-28 19:17:20,877 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:17:22,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:22,064 INFO L93 Difference]: Finished difference Result 11057 states and 15923 transitions. [2020-10-28 19:17:22,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:22,065 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-28 19:17:22,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:22,104 INFO L225 Difference]: With dead ends: 11057 [2020-10-28 19:17:22,105 INFO L226 Difference]: Without dead ends: 7504 [2020-10-28 19:17:22,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:22,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7504 states. [2020-10-28 19:17:22,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7504 to 7501. [2020-10-28 19:17:22,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7501 states. [2020-10-28 19:17:22,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7501 states to 7501 states and 10639 transitions. [2020-10-28 19:17:22,548 INFO L78 Accepts]: Start accepts. Automaton has 7501 states and 10639 transitions. Word has length 161 [2020-10-28 19:17:22,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:22,548 INFO L481 AbstractCegarLoop]: Abstraction has 7501 states and 10639 transitions. [2020-10-28 19:17:22,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:22,548 INFO L276 IsEmpty]: Start isEmpty. Operand 7501 states and 10639 transitions. [2020-10-28 19:17:22,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 19:17:22,562 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:22,562 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:22,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:17:22,563 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:22,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:22,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1231425666, now seen corresponding path program 1 times [2020-10-28 19:17:22,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:22,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273211217] [2020-10-28 19:17:22,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:22,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:22,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:22,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:26,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:26,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:27,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:27,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:27,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 19:17:27,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:17:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 19:17:27,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:27,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:27,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 19:17:27,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:28,029 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:28,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:28,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:28,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:28,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:28,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:28,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:17:28,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:28,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:28,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:28,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:28,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:28,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:28,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273211217] [2020-10-28 19:17:28,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:28,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:28,131 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296348074] [2020-10-28 19:17:28,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:28,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:28,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:28,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:28,133 INFO L87 Difference]: Start difference. First operand 7501 states and 10639 transitions. Second operand 5 states. [2020-10-28 19:17:30,691 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:17:32,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:32,029 INFO L93 Difference]: Finished difference Result 19797 states and 28043 transitions. [2020-10-28 19:17:32,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:32,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-28 19:17:32,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:32,087 INFO L225 Difference]: With dead ends: 19797 [2020-10-28 19:17:32,087 INFO L226 Difference]: Without dead ends: 13084 [2020-10-28 19:17:32,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:32,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13084 states. [2020-10-28 19:17:33,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13084 to 13081. [2020-10-28 19:17:33,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13081 states. [2020-10-28 19:17:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13081 states to 13081 states and 18213 transitions. [2020-10-28 19:17:33,047 INFO L78 Accepts]: Start accepts. Automaton has 13081 states and 18213 transitions. Word has length 162 [2020-10-28 19:17:33,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:33,047 INFO L481 AbstractCegarLoop]: Abstraction has 13081 states and 18213 transitions. [2020-10-28 19:17:33,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:33,047 INFO L276 IsEmpty]: Start isEmpty. Operand 13081 states and 18213 transitions. [2020-10-28 19:17:33,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 19:17:33,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:33,072 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:33,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:17:33,073 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:33,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:33,073 INFO L82 PathProgramCache]: Analyzing trace with hash 829504643, now seen corresponding path program 1 times [2020-10-28 19:17:33,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:33,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084419555] [2020-10-28 19:17:33,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:33,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:33,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:33,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:38,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:38,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 19:17:38,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:17:38,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 19:17:38,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:38,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 19:17:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 19:17:38,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:38,519 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:38,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:38,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:38,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:38,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:38,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:38,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:17:38,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:38,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:38,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:38,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:38,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:38,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:38,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:38,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084419555] [2020-10-28 19:17:38,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:38,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:38,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605707104] [2020-10-28 19:17:38,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:38,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:38,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:38,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:38,581 INFO L87 Difference]: Start difference. First operand 13081 states and 18213 transitions. Second operand 5 states. [2020-10-28 19:17:40,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:40,636 INFO L93 Difference]: Finished difference Result 23020 states and 32031 transitions. [2020-10-28 19:17:40,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:17:40,636 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-28 19:17:40,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:40,659 INFO L225 Difference]: With dead ends: 23020 [2020-10-28 19:17:40,659 INFO L226 Difference]: Without dead ends: 10034 [2020-10-28 19:17:40,686 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 [2020-10-28 19:17:40,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10034 states. [2020-10-28 19:17:41,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10034 to 10034. [2020-10-28 19:17:41,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10034 states. [2020-10-28 19:17:41,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10034 states to 10034 states and 13944 transitions. [2020-10-28 19:17:41,462 INFO L78 Accepts]: Start accepts. Automaton has 10034 states and 13944 transitions. Word has length 163 [2020-10-28 19:17:41,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:41,463 INFO L481 AbstractCegarLoop]: Abstraction has 10034 states and 13944 transitions. [2020-10-28 19:17:41,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:41,463 INFO L276 IsEmpty]: Start isEmpty. Operand 10034 states and 13944 transitions. [2020-10-28 19:17:41,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 19:17:41,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:41,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:41,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:17:41,482 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:41,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:41,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1273892077, now seen corresponding path program 1 times [2020-10-28 19:17:41,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:41,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640849160] [2020-10-28 19:17:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:41,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:41,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:41,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:41,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:41,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:41,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:44,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:44,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:46,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:46,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 19:17:46,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:17:46,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 19:17:46,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:46,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:46,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:46,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:46,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 19:17:46,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:46,890 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:46,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:46,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:46,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:46,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:46,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:46,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:17:46,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:46,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:46,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:46,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:46,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:46,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:46,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640849160] [2020-10-28 19:17:46,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:46,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:46,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071701576] [2020-10-28 19:17:46,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:46,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:46,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:46,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:46,986 INFO L87 Difference]: Start difference. First operand 10034 states and 13944 transitions. Second operand 5 states. [2020-10-28 19:17:49,420 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:17:50,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:17:50,641 INFO L93 Difference]: Finished difference Result 25943 states and 35994 transitions. [2020-10-28 19:17:50,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:17:50,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-10-28 19:17:50,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:17:50,676 INFO L225 Difference]: With dead ends: 25943 [2020-10-28 19:17:50,677 INFO L226 Difference]: Without dead ends: 16258 [2020-10-28 19:17:50,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:17:50,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16258 states. [2020-10-28 19:17:51,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16258 to 16255. [2020-10-28 19:17:51,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16255 states. [2020-10-28 19:17:51,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16255 states to 16255 states and 22231 transitions. [2020-10-28 19:17:51,697 INFO L78 Accepts]: Start accepts. Automaton has 16255 states and 22231 transitions. Word has length 166 [2020-10-28 19:17:51,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:17:51,697 INFO L481 AbstractCegarLoop]: Abstraction has 16255 states and 22231 transitions. [2020-10-28 19:17:51,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:17:51,697 INFO L276 IsEmpty]: Start isEmpty. Operand 16255 states and 22231 transitions. [2020-10-28 19:17:51,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 19:17:51,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:17:51,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:17:51,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:17:51,720 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:17:51,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:17:51,721 INFO L82 PathProgramCache]: Analyzing trace with hash -511572201, now seen corresponding path program 1 times [2020-10-28 19:17:51,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:17:51,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254213084] [2020-10-28 19:17:51,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:17:51,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:51,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:51,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:52,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:52,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:54,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:56,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:56,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 19:17:56,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 19:17:56,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 19:17:56,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:56,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:17:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:17:56,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 19:17:56,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:57,150 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:17:57,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:17:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:17:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:17:57,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:17:57,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:17:57,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:17:57,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 19:17:57,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:17:57,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:17:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:17:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:17:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:17:57,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:17:57,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:17:57,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254213084] [2020-10-28 19:17:57,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:17:57,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:17:57,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324601964] [2020-10-28 19:17:57,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:17:57,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:17:57,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:17:57,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:17:57,340 INFO L87 Difference]: Start difference. First operand 16255 states and 22231 transitions. Second operand 5 states. [2020-10-28 19:17:57,689 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 19:18:01,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:01,779 INFO L93 Difference]: Finished difference Result 28711 states and 39422 transitions. [2020-10-28 19:18:01,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:18:01,780 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-28 19:18:01,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:01,814 INFO L225 Difference]: With dead ends: 28711 [2020-10-28 19:18:01,814 INFO L226 Difference]: Without dead ends: 16258 [2020-10-28 19:18:01,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:18:01,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16258 states. [2020-10-28 19:18:02,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16258 to 16255. [2020-10-28 19:18:02,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16255 states. [2020-10-28 19:18:03,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16255 states to 16255 states and 22152 transitions. [2020-10-28 19:18:03,008 INFO L78 Accepts]: Start accepts. Automaton has 16255 states and 22152 transitions. Word has length 167 [2020-10-28 19:18:03,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:03,008 INFO L481 AbstractCegarLoop]: Abstraction has 16255 states and 22152 transitions. [2020-10-28 19:18:03,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:03,009 INFO L276 IsEmpty]: Start isEmpty. Operand 16255 states and 22152 transitions. [2020-10-28 19:18:03,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 19:18:03,030 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:03,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:03,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:18:03,030 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:03,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:03,031 INFO L82 PathProgramCache]: Analyzing trace with hash 890294232, now seen corresponding path program 1 times [2020-10-28 19:18:03,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:03,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296481623] [2020-10-28 19:18:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:03,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:03,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:03,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:08,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:08,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 19:18:08,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:08,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 19:18:08,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:08,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 19:18:08,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 19:18:08,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:08,449 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:18:08,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:08,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:08,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:08,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:08,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:08,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:18:08,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:08,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:08,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:08,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:08,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:08,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:08,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:08,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296481623] [2020-10-28 19:18:08,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:08,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:08,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589154188] [2020-10-28 19:18:08,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:08,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:08,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:08,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:08,505 INFO L87 Difference]: Start difference. First operand 16255 states and 22152 transitions. Second operand 5 states. [2020-10-28 19:18:10,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:10,877 INFO L93 Difference]: Finished difference Result 25649 states and 35138 transitions. [2020-10-28 19:18:10,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:10,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-28 19:18:10,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:10,897 INFO L225 Difference]: With dead ends: 25649 [2020-10-28 19:18:10,898 INFO L226 Difference]: Without dead ends: 13232 [2020-10-28 19:18:10,921 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 [2020-10-28 19:18:10,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13232 states. [2020-10-28 19:18:11,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13232 to 13232. [2020-10-28 19:18:11,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13232 states. [2020-10-28 19:18:11,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13232 states to 13232 states and 18002 transitions. [2020-10-28 19:18:11,972 INFO L78 Accepts]: Start accepts. Automaton has 13232 states and 18002 transitions. Word has length 168 [2020-10-28 19:18:11,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:11,972 INFO L481 AbstractCegarLoop]: Abstraction has 13232 states and 18002 transitions. [2020-10-28 19:18:11,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:11,972 INFO L276 IsEmpty]: Start isEmpty. Operand 13232 states and 18002 transitions. [2020-10-28 19:18:11,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 19:18:11,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:11,985 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:11,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:18:11,985 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:11,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:11,986 INFO L82 PathProgramCache]: Analyzing trace with hash 2107336227, now seen corresponding path program 1 times [2020-10-28 19:18:11,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:11,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [337621963] [2020-10-28 19:18:11,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:12,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:12,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:12,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:12,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:12,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:12,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:17,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:17,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 19:18:17,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:18:17,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 19:18:17,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:17,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:17,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:17,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 19:18:17,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 19:18:17,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:17,390 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:18:17,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:17,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:17,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:17,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:17,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:17,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:18:17,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:17,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:17,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:17,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:17,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:17,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [337621963] [2020-10-28 19:18:17,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:17,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:17,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997683290] [2020-10-28 19:18:17,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:17,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:17,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:17,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:17,465 INFO L87 Difference]: Start difference. First operand 13232 states and 18002 transitions. Second operand 5 states. [2020-10-28 19:18:19,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:19,707 INFO L93 Difference]: Finished difference Result 22695 states and 31010 transitions. [2020-10-28 19:18:19,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:19,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-28 19:18:19,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:19,721 INFO L225 Difference]: With dead ends: 22695 [2020-10-28 19:18:19,721 INFO L226 Difference]: Without dead ends: 9875 [2020-10-28 19:18:19,734 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 [2020-10-28 19:18:19,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9875 states. [2020-10-28 19:18:20,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9875 to 9875. [2020-10-28 19:18:20,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9875 states. [2020-10-28 19:18:20,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9875 states to 9875 states and 13473 transitions. [2020-10-28 19:18:20,320 INFO L78 Accepts]: Start accepts. Automaton has 9875 states and 13473 transitions. Word has length 170 [2020-10-28 19:18:20,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:20,320 INFO L481 AbstractCegarLoop]: Abstraction has 9875 states and 13473 transitions. [2020-10-28 19:18:20,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:20,320 INFO L276 IsEmpty]: Start isEmpty. Operand 9875 states and 13473 transitions. [2020-10-28 19:18:20,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 19:18:20,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:20,331 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:20,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:18:20,331 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:20,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:20,332 INFO L82 PathProgramCache]: Analyzing trace with hash -27311786, now seen corresponding path program 1 times [2020-10-28 19:18:20,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:20,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463541991] [2020-10-28 19:18:20,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:20,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:20,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:22,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:25,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 19:18:25,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:25,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 19:18:25,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:25,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:25,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:25,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 19:18:25,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 19:18:25,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:25,710 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:18:25,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:25,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:25,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:25,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:25,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:25,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:25,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:18:25,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:25,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:25,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:25,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:25,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463541991] [2020-10-28 19:18:25,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:25,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:25,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548592468] [2020-10-28 19:18:25,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:25,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:25,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:25,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:25,776 INFO L87 Difference]: Start difference. First operand 9875 states and 13473 transitions. Second operand 5 states. [2020-10-28 19:18:29,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:29,027 INFO L93 Difference]: Finished difference Result 23551 states and 33046 transitions. [2020-10-28 19:18:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:29,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-28 19:18:29,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:29,052 INFO L225 Difference]: With dead ends: 23551 [2020-10-28 19:18:29,052 INFO L226 Difference]: Without dead ends: 17598 [2020-10-28 19:18:29,062 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 [2020-10-28 19:18:29,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17598 states. [2020-10-28 19:18:30,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17598 to 11659. [2020-10-28 19:18:30,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11659 states. [2020-10-28 19:18:30,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11659 states to 11659 states and 15657 transitions. [2020-10-28 19:18:30,215 INFO L78 Accepts]: Start accepts. Automaton has 11659 states and 15657 transitions. Word has length 173 [2020-10-28 19:18:30,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:30,215 INFO L481 AbstractCegarLoop]: Abstraction has 11659 states and 15657 transitions. [2020-10-28 19:18:30,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:30,215 INFO L276 IsEmpty]: Start isEmpty. Operand 11659 states and 15657 transitions. [2020-10-28 19:18:30,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 19:18:30,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:30,225 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:30,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 19:18:30,225 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:30,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:30,226 INFO L82 PathProgramCache]: Analyzing trace with hash 152120217, now seen corresponding path program 1 times [2020-10-28 19:18:30,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:30,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417711589] [2020-10-28 19:18:30,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:30,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:30,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:30,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:30,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:31,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:32,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:32,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:33,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:33,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:33,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:35,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:35,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 19:18:35,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:18:35,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 19:18:35,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:35,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:35,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:35,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:18:35,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 19:18:35,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:35,642 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:18:35,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:35,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:35,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:35,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:35,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:35,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:35,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 19:18:35,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:35,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:35,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:35,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:35,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:35,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:35,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:35,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417711589] [2020-10-28 19:18:35,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:35,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:35,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13788630] [2020-10-28 19:18:35,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:35,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:35,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:35,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:35,783 INFO L87 Difference]: Start difference. First operand 11659 states and 15657 transitions. Second operand 5 states. [2020-10-28 19:18:36,114 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 19:18:39,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:39,661 INFO L93 Difference]: Finished difference Result 19142 states and 25783 transitions. [2020-10-28 19:18:39,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:18:39,661 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 173 [2020-10-28 19:18:39,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:39,677 INFO L225 Difference]: With dead ends: 19142 [2020-10-28 19:18:39,677 INFO L226 Difference]: Without dead ends: 11662 [2020-10-28 19:18:39,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:18:39,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11662 states. [2020-10-28 19:18:40,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11662 to 11659. [2020-10-28 19:18:40,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11659 states. [2020-10-28 19:18:40,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11659 states to 11659 states and 15595 transitions. [2020-10-28 19:18:40,508 INFO L78 Accepts]: Start accepts. Automaton has 11659 states and 15595 transitions. Word has length 173 [2020-10-28 19:18:40,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:40,508 INFO L481 AbstractCegarLoop]: Abstraction has 11659 states and 15595 transitions. [2020-10-28 19:18:40,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:40,508 INFO L276 IsEmpty]: Start isEmpty. Operand 11659 states and 15595 transitions. [2020-10-28 19:18:40,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 19:18:40,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:40,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:40,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 19:18:40,517 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:40,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:40,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1555656607, now seen corresponding path program 1 times [2020-10-28 19:18:40,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:40,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1342985323] [2020-10-28 19:18:40,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:40,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:40,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:40,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:40,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:41,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:41,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:41,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:45,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:45,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 19:18:45,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:45,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 19:18:45,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:45,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 19:18:45,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 19:18:45,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:45,929 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:18:45,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:45,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:45,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:45,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:45,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:45,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:18:45,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:45,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:45,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:45,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:45,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:45,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1342985323] [2020-10-28 19:18:45,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:45,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:45,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938554953] [2020-10-28 19:18:45,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:45,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:45,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:45,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:45,978 INFO L87 Difference]: Start difference. First operand 11659 states and 15595 transitions. Second operand 5 states. [2020-10-28 19:18:48,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:48,196 INFO L93 Difference]: Finished difference Result 16604 states and 22298 transitions. [2020-10-28 19:18:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:48,197 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-28 19:18:48,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:48,208 INFO L225 Difference]: With dead ends: 16604 [2020-10-28 19:18:48,209 INFO L226 Difference]: Without dead ends: 10069 [2020-10-28 19:18:48,214 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 [2020-10-28 19:18:48,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10069 states. [2020-10-28 19:18:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10069 to 10069. [2020-10-28 19:18:48,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10069 states. [2020-10-28 19:18:48,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10069 states to 10069 states and 13439 transitions. [2020-10-28 19:18:48,989 INFO L78 Accepts]: Start accepts. Automaton has 10069 states and 13439 transitions. Word has length 174 [2020-10-28 19:18:48,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:48,990 INFO L481 AbstractCegarLoop]: Abstraction has 10069 states and 13439 transitions. [2020-10-28 19:18:48,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:18:48,990 INFO L276 IsEmpty]: Start isEmpty. Operand 10069 states and 13439 transitions. [2020-10-28 19:18:48,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-28 19:18:48,997 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:48,997 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:48,997 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 19:18:48,997 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:48,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:48,997 INFO L82 PathProgramCache]: Analyzing trace with hash 440225288, now seen corresponding path program 1 times [2020-10-28 19:18:48,998 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:48,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1468524073] [2020-10-28 19:18:48,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:49,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:49,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:49,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:51,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:54,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:54,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 19:18:54,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:54,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 19:18:54,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:54,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:54,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:54,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 19:18:54,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 19:18:54,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:54,385 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:18:54,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:54,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:54,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:54,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:54,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:54,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:18:54,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:54,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:54,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:18:54,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:18:54,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1468524073] [2020-10-28 19:18:54,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:54,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:18:54,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128688754] [2020-10-28 19:18:54,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:18:54,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:54,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:18:54,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:54,437 INFO L87 Difference]: Start difference. First operand 10069 states and 13439 transitions. Second operand 5 states. [2020-10-28 19:18:54,759 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 212 [2020-10-28 19:18:57,215 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 19:18:58,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:58,806 INFO L93 Difference]: Finished difference Result 25964 states and 36083 transitions. [2020-10-28 19:18:58,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:18:58,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-28 19:18:58,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:58,829 INFO L225 Difference]: With dead ends: 25964 [2020-10-28 19:18:58,830 INFO L226 Difference]: Without dead ends: 22685 [2020-10-28 19:18:58,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:18:58,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22685 states. [2020-10-28 19:19:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22685 to 22679. [2020-10-28 19:19:00,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22679 states. [2020-10-28 19:19:00,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22679 states to 22679 states and 30855 transitions. [2020-10-28 19:19:00,352 INFO L78 Accepts]: Start accepts. Automaton has 22679 states and 30855 transitions. Word has length 176 [2020-10-28 19:19:00,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:00,353 INFO L481 AbstractCegarLoop]: Abstraction has 22679 states and 30855 transitions. [2020-10-28 19:19:00,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:00,353 INFO L276 IsEmpty]: Start isEmpty. Operand 22679 states and 30855 transitions. [2020-10-28 19:19:00,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-28 19:19:00,366 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:00,367 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:19:00,367 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 19:19:00,367 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:00,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:00,367 INFO L82 PathProgramCache]: Analyzing trace with hash -961260836, now seen corresponding path program 1 times [2020-10-28 19:19:00,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:00,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38247871] [2020-10-28 19:19:00,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:00,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:00,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:00,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:01,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:05,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:05,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 19:19:05,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:19:05,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 19:19:05,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:05,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:05,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:19:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 19:19:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 19:19:05,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:05,761 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:19:05,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:05,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:05,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:05,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:05,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:05,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:19:05,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:05,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:05,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:05,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:19:05,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38247871] [2020-10-28 19:19:05,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:05,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:19:05,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597212684] [2020-10-28 19:19:05,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:19:05,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:05,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:19:05,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:19:05,807 INFO L87 Difference]: Start difference. First operand 22679 states and 30855 transitions. Second operand 4 states. [2020-10-28 19:19:09,507 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 19:19:10,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:10,602 INFO L93 Difference]: Finished difference Result 54799 states and 75820 transitions. [2020-10-28 19:19:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:10,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 176 [2020-10-28 19:19:10,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:10,654 INFO L225 Difference]: With dead ends: 54799 [2020-10-28 19:19:10,654 INFO L226 Difference]: Without dead ends: 33408 [2020-10-28 19:19:10,681 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 [2020-10-28 19:19:10,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33408 states. [2020-10-28 19:19:13,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33408 to 29779. [2020-10-28 19:19:13,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29779 states. [2020-10-28 19:19:13,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29779 states to 29779 states and 41811 transitions. [2020-10-28 19:19:13,157 INFO L78 Accepts]: Start accepts. Automaton has 29779 states and 41811 transitions. Word has length 176 [2020-10-28 19:19:13,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:13,158 INFO L481 AbstractCegarLoop]: Abstraction has 29779 states and 41811 transitions. [2020-10-28 19:19:13,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:19:13,158 INFO L276 IsEmpty]: Start isEmpty. Operand 29779 states and 41811 transitions. [2020-10-28 19:19:13,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-28 19:19:13,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:13,176 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:19:13,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 19:19:13,176 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:13,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:13,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1375642916, now seen corresponding path program 1 times [2020-10-28 19:19:13,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:13,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693466701] [2020-10-28 19:19:13,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:13,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:13,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:13,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:13,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:18,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:18,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 19:19:18,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 19:19:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 19:19:18,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:18,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:19:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 19:19:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 19:19:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:18,542 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:19:18,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:18,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:18,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:18,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:18,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:19:18,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:18,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:18,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:18,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:18,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:19:18,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693466701] [2020-10-28 19:19:18,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:18,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:19:18,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632034531] [2020-10-28 19:19:18,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:19:18,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:18,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:19:18,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:19:18,591 INFO L87 Difference]: Start difference. First operand 29779 states and 41811 transitions. Second operand 4 states. [2020-10-28 19:19:22,725 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 19:19:24,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:24,759 INFO L93 Difference]: Finished difference Result 75669 states and 107928 transitions. [2020-10-28 19:19:24,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:24,759 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 179 [2020-10-28 19:19:24,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:24,834 INFO L225 Difference]: With dead ends: 75669 [2020-10-28 19:19:24,834 INFO L226 Difference]: Without dead ends: 46958 [2020-10-28 19:19:24,866 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 [2020-10-28 19:19:24,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46958 states. [2020-10-28 19:19:28,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46958 to 42095. [2020-10-28 19:19:28,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42095 states. [2020-10-28 19:19:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42095 states to 42095 states and 60781 transitions. [2020-10-28 19:19:28,406 INFO L78 Accepts]: Start accepts. Automaton has 42095 states and 60781 transitions. Word has length 179 [2020-10-28 19:19:28,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:28,406 INFO L481 AbstractCegarLoop]: Abstraction has 42095 states and 60781 transitions. [2020-10-28 19:19:28,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:19:28,406 INFO L276 IsEmpty]: Start isEmpty. Operand 42095 states and 60781 transitions. [2020-10-28 19:19:28,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-28 19:19:28,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:28,424 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:19:28,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 19:19:28,424 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:28,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:28,425 INFO L82 PathProgramCache]: Analyzing trace with hash -934228428, now seen corresponding path program 1 times [2020-10-28 19:19:28,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:28,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884248804] [2020-10-28 19:19:28,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:28,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:28,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:28,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:28,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:29,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:33,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:33,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-28 19:19:33,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:19:33,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5084 [2020-10-28 19:19:33,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:33,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:19:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 19:19:33,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 19:19:33,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:33,875 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:19:33,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:33,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:33,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:33,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:33,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:19:33,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:33,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:33,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:33,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:33,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:19:33,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884248804] [2020-10-28 19:19:33,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:33,917 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:19:33,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521671441] [2020-10-28 19:19:33,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:19:33,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:33,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:19:33,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:19:33,919 INFO L87 Difference]: Start difference. First operand 42095 states and 60781 transitions. Second operand 4 states. [2020-10-28 19:19:38,415 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 19:19:42,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:42,346 INFO L93 Difference]: Finished difference Result 112211 states and 164123 transitions. [2020-10-28 19:19:42,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:19:42,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 182 [2020-10-28 19:19:42,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:42,458 INFO L225 Difference]: With dead ends: 112211 [2020-10-28 19:19:42,458 INFO L226 Difference]: Without dead ends: 70964 [2020-10-28 19:19:42,492 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 [2020-10-28 19:19:42,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70964 states. [2020-10-28 19:19:48,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70964 to 64575. [2020-10-28 19:19:48,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64575 states. [2020-10-28 19:19:48,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64575 states to 64575 states and 95359 transitions. [2020-10-28 19:19:48,384 INFO L78 Accepts]: Start accepts. Automaton has 64575 states and 95359 transitions. Word has length 182 [2020-10-28 19:19:48,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:48,385 INFO L481 AbstractCegarLoop]: Abstraction has 64575 states and 95359 transitions. [2020-10-28 19:19:48,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:19:48,385 INFO L276 IsEmpty]: Start isEmpty. Operand 64575 states and 95359 transitions. [2020-10-28 19:19:48,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-28 19:19:48,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:48,397 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:19:48,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 19:19:48,397 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:48,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:48,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1483071503, now seen corresponding path program 1 times [2020-10-28 19:19:48,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:48,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828639022] [2020-10-28 19:19:48,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:48,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:48,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:49,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:52,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:53,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:53,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:53,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-28 19:19:53,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:19:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 19:19:53,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:53,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 19:19:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-28 19:19:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 19:19:53,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:53,806 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 19:19:53,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:53,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:53,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:53,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:53,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:53,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:19:53,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:53,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:53,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:53,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:53,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:19:53,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828639022] [2020-10-28 19:19:53,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:53,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 19:19:53,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132698588] [2020-10-28 19:19:53,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 19:19:53,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:53,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 19:19:53,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:19:53,869 INFO L87 Difference]: Start difference. First operand 64575 states and 95359 transitions. Second operand 7 states. [2020-10-28 19:19:58,851 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-28 19:19:59,153 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 19:19:59,467 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 215 [2020-10-28 19:19:59,781 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 213 [2020-10-28 19:20:00,120 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 216 [2020-10-28 19:20:00,641 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 218