/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:55:51,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:55:51,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:55:51,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:55:51,725 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:55:51,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:55:51,728 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:55:51,730 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:55:51,733 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:55:51,734 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:55:51,735 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:55:51,736 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:55:51,737 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:55:51,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:55:51,740 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:55:51,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:55:51,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:55:51,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:55:51,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:55:51,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:55:51,757 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:55:51,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:55:51,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:55:51,760 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:55:51,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:55:51,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:55:51,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:55:51,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:55:51,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:55:51,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:55:51,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:55:51,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:55:51,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:55:51,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:55:51,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:55:51,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:55:51,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:55:51,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:55:51,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:55:51,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:55:51,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:55:51,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:55:51,831 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:55:51,832 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:55:51,833 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:55:51,834 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:55:51,834 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:55:51,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:55:51,836 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:55:51,836 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:55:51,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:55:51,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:55:51,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:55:51,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:55:51,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:55:51,838 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:55:51,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:55:51,838 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:55:51,839 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:55:51,839 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:55:51,839 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:55:51,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:55:51,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:55:51,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:55:51,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:55:51,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:55:51,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:55:51,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:55:51,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:55:51,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:55:51,841 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:55:51,842 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:55:52,257 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:55:52,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:55:52,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:55:52,289 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:55:52,290 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:55:52,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 12:55:52,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7b265dba/dd7d8e84214446809b0e282d5a20b8d2/FLAGa8662cd17 [2020-10-29 12:55:53,141 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:55:53,142 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 12:55:53,168 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7b265dba/dd7d8e84214446809b0e282d5a20b8d2/FLAGa8662cd17 [2020-10-29 12:55:53,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b7b265dba/dd7d8e84214446809b0e282d5a20b8d2 [2020-10-29 12:55:53,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:55:53,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:55:53,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:55:53,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:55:53,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:55:53,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:55:53" (1/1) ... [2020-10-29 12:55:53,424 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cb88ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:53, skipping insertion in model container [2020-10-29 12:55:53,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:55:53" (1/1) ... [2020-10-29 12:55:53,433 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:55:53,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:55:54,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:55:54,090 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:55:54,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:55:54,385 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:55:54,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:54 WrapperNode [2020-10-29 12:55:54,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:55:54,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:55:54,388 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:55:54,388 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:55:54,401 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:54" (1/1) ... [2020-10-29 12:55:54,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:54" (1/1) ... [2020-10-29 12:55:54,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:54" (1/1) ... [2020-10-29 12:55:54,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:54" (1/1) ... [2020-10-29 12:55:54,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:54" (1/1) ... [2020-10-29 12:55:54,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:54" (1/1) ... [2020-10-29 12:55:54,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:54" (1/1) ... [2020-10-29 12:55:54,507 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:55:54,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:55:54,509 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:55:54,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:55:54,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:55:54,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:55:54,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:55:54,607 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:55:54,607 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 12:55:54,607 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:55:54,608 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:55:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:55:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:55:54,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:55:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:55:54,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:55:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:55:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 12:55:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:55:54,611 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:55:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:55:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:55:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:55:54,612 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:55:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:55:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:55:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:55:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:55:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:55:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:55:54,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:55:54,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:55:56,465 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:55:56,466 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 12:55:56,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:55:56 BoogieIcfgContainer [2020-10-29 12:55:56,472 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:55:56,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:55:56,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:55:56,482 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:55:56,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:55:53" (1/3) ... [2020-10-29 12:55:56,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5924abda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:55:56, skipping insertion in model container [2020-10-29 12:55:56,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:55:54" (2/3) ... [2020-10-29 12:55:56,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5924abda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:55:56, skipping insertion in model container [2020-10-29 12:55:56,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:55:56" (3/3) ... [2020-10-29 12:55:56,486 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-29 12:55:56,500 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:55:56,507 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:55:56,522 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:55:56,574 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:55:56,574 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:55:56,574 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:55:56,574 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:55:56,574 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:55:56,575 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:55:56,575 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:55:56,575 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:55:56,619 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states. [2020-10-29 12:55:56,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 12:55:56,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:55:56,656 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] [2020-10-29 12:55:56,657 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:55:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:55:56,667 INFO L82 PathProgramCache]: Analyzing trace with hash -199063433, now seen corresponding path program 1 times [2020-10-29 12:55:56,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:55:56,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2077991481] [2020-10-29 12:55:56,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:55:57,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:55:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:57,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:57,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:57,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:58,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:58,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:58,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:58,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:55:58,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:02,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:02,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 12:56:02,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 12:56:02,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 12:56:02,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:02,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:56:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-29 12:56:02,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 12:56:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 12:56:02,795 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:56:02,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:02,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:02,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:02,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:02,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:02,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:02,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:56:02,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:02,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:02,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:02,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:02,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:02,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:56:02,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:02,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2077991481] [2020-10-29 12:56:02,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:02,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:56:02,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081574495] [2020-10-29 12:56:02,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:56:02,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:02,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:56:02,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:56:02,942 INFO L87 Difference]: Start difference. First operand 386 states. Second operand 4 states. [2020-10-29 12:56:03,534 WARN L193 SmtUtils]: Spent 449.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-29 12:56:06,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:06,066 INFO L93 Difference]: Finished difference Result 681 states and 1209 transitions. [2020-10-29 12:56:06,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:56:06,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-10-29 12:56:06,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:06,110 INFO L225 Difference]: With dead ends: 681 [2020-10-29 12:56:06,115 INFO L226 Difference]: Without dead ends: 540 [2020-10-29 12:56:06,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:06,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-10-29 12:56:06,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 537. [2020-10-29 12:56:06,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-29 12:56:06,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 790 transitions. [2020-10-29 12:56:06,271 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 790 transitions. Word has length 144 [2020-10-29 12:56:06,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:06,276 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 790 transitions. [2020-10-29 12:56:06,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:56:06,277 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 790 transitions. [2020-10-29 12:56:06,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-29 12:56:06,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:06,281 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] [2020-10-29 12:56:06,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:56:06,282 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:06,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:06,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1556500780, now seen corresponding path program 1 times [2020-10-29 12:56:06,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:06,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285404254] [2020-10-29 12:56:06,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:06,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:06,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:06,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:06,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:06,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:07,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:07,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:07,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:07,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:07,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:08,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:08,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:09,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:11,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:11,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 12:56:11,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:56:11,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:56:11,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:11,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:11,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:11,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 12:56:11,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:56:11,960 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:56:11,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:11,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:11,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:11,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:11,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:11,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:11,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:56:11,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:11,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:11,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:11,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:12,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285404254] [2020-10-29 12:56:12,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:12,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:12,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503410131] [2020-10-29 12:56:12,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:12,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:12,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:12,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:12,065 INFO L87 Difference]: Start difference. First operand 537 states and 790 transitions. Second operand 5 states. [2020-10-29 12:56:14,785 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 12:56:16,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:16,009 INFO L93 Difference]: Finished difference Result 1548 states and 2270 transitions. [2020-10-29 12:56:16,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:16,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-29 12:56:16,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:16,018 INFO L225 Difference]: With dead ends: 1548 [2020-10-29 12:56:16,018 INFO L226 Difference]: Without dead ends: 1036 [2020-10-29 12:56:16,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:16,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-10-29 12:56:16,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1014. [2020-10-29 12:56:16,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1014 states. [2020-10-29 12:56:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 1481 transitions. [2020-10-29 12:56:16,123 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 1481 transitions. Word has length 144 [2020-10-29 12:56:16,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:16,124 INFO L481 AbstractCegarLoop]: Abstraction has 1014 states and 1481 transitions. [2020-10-29 12:56:16,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:16,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 1481 transitions. [2020-10-29 12:56:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 12:56:16,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:16,128 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] [2020-10-29 12:56:16,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:56:16,129 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:16,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:16,130 INFO L82 PathProgramCache]: Analyzing trace with hash -851879242, now seen corresponding path program 1 times [2020-10-29 12:56:16,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:16,132 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869074102] [2020-10-29 12:56:16,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:16,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:16,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:17,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:17,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:19,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:19,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:21,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:21,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 12:56:21,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 12:56:21,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 12:56:21,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:21,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:21,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:21,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:21,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 12:56:21,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:56:21,912 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:56:21,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:21,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:21,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:21,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:21,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:21,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 12:56:21,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:21,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:21,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:21,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:21,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:56:22,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:22,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869074102] [2020-10-29 12:56:22,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:22,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:22,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308400088] [2020-10-29 12:56:22,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:22,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:22,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:22,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:22,052 INFO L87 Difference]: Start difference. First operand 1014 states and 1481 transitions. Second operand 5 states. [2020-10-29 12:56:25,013 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 12:56:26,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:26,368 INFO L93 Difference]: Finished difference Result 2930 states and 4262 transitions. [2020-10-29 12:56:26,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:26,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-29 12:56:26,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:26,381 INFO L225 Difference]: With dead ends: 2930 [2020-10-29 12:56:26,382 INFO L226 Difference]: Without dead ends: 1949 [2020-10-29 12:56:26,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:26,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1949 states. [2020-10-29 12:56:26,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1949 to 1930. [2020-10-29 12:56:26,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-29 12:56:26,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2787 transitions. [2020-10-29 12:56:26,521 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2787 transitions. Word has length 145 [2020-10-29 12:56:26,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:26,522 INFO L481 AbstractCegarLoop]: Abstraction has 1930 states and 2787 transitions. [2020-10-29 12:56:26,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:26,522 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2787 transitions. [2020-10-29 12:56:26,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 12:56:26,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:26,545 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] [2020-10-29 12:56:26,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:56:26,546 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:26,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:26,547 INFO L82 PathProgramCache]: Analyzing trace with hash -858433680, now seen corresponding path program 1 times [2020-10-29 12:56:26,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:26,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114442305] [2020-10-29 12:56:26,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:26,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:26,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:27,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:27,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:27,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:28,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:28,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:31,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:31,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 12:56:31,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:56:31,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:56:31,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:31,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:31,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:31,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:31,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 12:56:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:32,069 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:56:32,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:32,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:32,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:32,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:32,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:32,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:32,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 12:56:32,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:32,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:32,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:32,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:32,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:32,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:56:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:32,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114442305] [2020-10-29 12:56:32,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:32,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:32,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074891560] [2020-10-29 12:56:32,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:32,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:32,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:32,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:32,181 INFO L87 Difference]: Start difference. First operand 1930 states and 2787 transitions. Second operand 5 states. [2020-10-29 12:56:35,019 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 12:56:36,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:36,365 INFO L93 Difference]: Finished difference Result 5628 states and 8102 transitions. [2020-10-29 12:56:36,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:36,366 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-29 12:56:36,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:36,385 INFO L225 Difference]: With dead ends: 5628 [2020-10-29 12:56:36,385 INFO L226 Difference]: Without dead ends: 3738 [2020-10-29 12:56:36,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:36,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3738 states. [2020-10-29 12:56:36,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3738 to 3714. [2020-10-29 12:56:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3714 states. [2020-10-29 12:56:36,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3714 states to 3714 states and 5303 transitions. [2020-10-29 12:56:36,609 INFO L78 Accepts]: Start accepts. Automaton has 3714 states and 5303 transitions. Word has length 146 [2020-10-29 12:56:36,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:36,610 INFO L481 AbstractCegarLoop]: Abstraction has 3714 states and 5303 transitions. [2020-10-29 12:56:36,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:36,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3714 states and 5303 transitions. [2020-10-29 12:56:36,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 12:56:36,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:36,617 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] [2020-10-29 12:56:36,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:56:36,618 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:36,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:36,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2033804149, now seen corresponding path program 1 times [2020-10-29 12:56:36,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:36,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [693180071] [2020-10-29 12:56:36,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:36,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:36,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:36,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:36,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:36,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:37,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:37,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:37,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:37,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:38,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:38,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:38,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:41,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:41,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 12:56:41,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 12:56:41,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 12:56:41,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:41,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:41,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:41,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:41,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 12:56:41,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:42,190 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:56:42,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:42,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:42,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:42,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:42,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:42,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:56:42,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:42,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:42,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:42,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:42,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:42,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [693180071] [2020-10-29 12:56:42,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:42,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:42,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145010323] [2020-10-29 12:56:42,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:42,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:42,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:42,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:42,289 INFO L87 Difference]: Start difference. First operand 3714 states and 5303 transitions. Second operand 5 states. [2020-10-29 12:56:45,550 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 12:56:47,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:47,098 INFO L93 Difference]: Finished difference Result 10578 states and 15083 transitions. [2020-10-29 12:56:47,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:47,099 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-29 12:56:47,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:47,132 INFO L225 Difference]: With dead ends: 10578 [2020-10-29 12:56:47,132 INFO L226 Difference]: Without dead ends: 7158 [2020-10-29 12:56:47,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:47,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7158 states. [2020-10-29 12:56:47,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7158 to 7134. [2020-10-29 12:56:47,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7134 states. [2020-10-29 12:56:47,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7134 states to 7134 states and 10055 transitions. [2020-10-29 12:56:47,694 INFO L78 Accepts]: Start accepts. Automaton has 7134 states and 10055 transitions. Word has length 147 [2020-10-29 12:56:47,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:47,695 INFO L481 AbstractCegarLoop]: Abstraction has 7134 states and 10055 transitions. [2020-10-29 12:56:47,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:47,695 INFO L276 IsEmpty]: Start isEmpty. Operand 7134 states and 10055 transitions. [2020-10-29 12:56:47,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-29 12:56:47,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:47,707 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] [2020-10-29 12:56:47,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:56:47,707 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:47,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:47,708 INFO L82 PathProgramCache]: Analyzing trace with hash -442187856, now seen corresponding path program 1 times [2020-10-29 12:56:47,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:47,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536804105] [2020-10-29 12:56:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:47,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:47,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:47,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:48,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:48,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:49,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:51,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:51,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:51,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:52,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:52,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-29 12:56:52,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:56:52,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 12:56:52,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:52,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:56:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:56:52,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 12:56:52,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:53,311 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:56:53,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:56:53,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:53,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:53,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:56:53,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:56:53,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:56:53,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:56:53,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:56:53,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:56:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:56:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:56:53,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:56:53,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:56:53,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:56:53,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536804105] [2020-10-29 12:56:53,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:56:53,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:56:53,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820269371] [2020-10-29 12:56:53,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:56:53,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:56:53,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:56:53,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:56:53,413 INFO L87 Difference]: Start difference. First operand 7134 states and 10055 transitions. Second operand 5 states. [2020-10-29 12:56:56,472 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 12:56:58,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:56:58,191 INFO L93 Difference]: Finished difference Result 18630 states and 26269 transitions. [2020-10-29 12:56:58,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:56:58,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2020-10-29 12:56:58,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:56:58,257 INFO L225 Difference]: With dead ends: 18630 [2020-10-29 12:56:58,257 INFO L226 Difference]: Without dead ends: 12590 [2020-10-29 12:56:58,272 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:56:58,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12590 states. [2020-10-29 12:56:59,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12590 to 12566. [2020-10-29 12:56:59,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12566 states. [2020-10-29 12:56:59,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12566 states to 12566 states and 17381 transitions. [2020-10-29 12:56:59,270 INFO L78 Accepts]: Start accepts. Automaton has 12566 states and 17381 transitions. Word has length 148 [2020-10-29 12:56:59,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:56:59,270 INFO L481 AbstractCegarLoop]: Abstraction has 12566 states and 17381 transitions. [2020-10-29 12:56:59,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:56:59,270 INFO L276 IsEmpty]: Start isEmpty. Operand 12566 states and 17381 transitions. [2020-10-29 12:56:59,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 12:56:59,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:56:59,290 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] [2020-10-29 12:56:59,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:56:59,290 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:56:59,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:56:59,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1799614381, now seen corresponding path program 1 times [2020-10-29 12:56:59,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:56:59,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091287971] [2020-10-29 12:56:59,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:56:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:56:59,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:59,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:59,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:59,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:56:59,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:04,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:04,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 12:57:04,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:57:04,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 12:57:04,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:04,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:04,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:04,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 12:57:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 12:57:04,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:04,784 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:57:04,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:04,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:04,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:04,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:04,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:57:04,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:04,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:04,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091287971] [2020-10-29 12:57:04,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:04,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:04,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950402261] [2020-10-29 12:57:04,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:04,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:04,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:04,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:04,844 INFO L87 Difference]: Start difference. First operand 12566 states and 17381 transitions. Second operand 5 states. [2020-10-29 12:57:07,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:07,212 INFO L93 Difference]: Finished difference Result 21288 states and 29439 transitions. [2020-10-29 12:57:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:57:07,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-29 12:57:07,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:07,234 INFO L225 Difference]: With dead ends: 21288 [2020-10-29 12:57:07,234 INFO L226 Difference]: Without dead ends: 8940 [2020-10-29 12:57:07,256 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:07,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8940 states. [2020-10-29 12:57:07,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8940 to 8916. [2020-10-29 12:57:07,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8916 states. [2020-10-29 12:57:07,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8916 states to 8916 states and 12347 transitions. [2020-10-29 12:57:07,782 INFO L78 Accepts]: Start accepts. Automaton has 8916 states and 12347 transitions. Word has length 149 [2020-10-29 12:57:07,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:07,783 INFO L481 AbstractCegarLoop]: Abstraction has 8916 states and 12347 transitions. [2020-10-29 12:57:07,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:07,783 INFO L276 IsEmpty]: Start isEmpty. Operand 8916 states and 12347 transitions. [2020-10-29 12:57:07,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-29 12:57:07,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:07,799 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] [2020-10-29 12:57:07,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:57:07,799 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:07,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:07,800 INFO L82 PathProgramCache]: Analyzing trace with hash -596200677, now seen corresponding path program 1 times [2020-10-29 12:57:07,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:07,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065267795] [2020-10-29 12:57:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:07,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:07,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:07,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:07,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:08,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:08,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:08,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:08,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:08,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:09,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:10,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:12,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:12,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 12:57:12,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 12:57:12,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:57:12,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:12,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:57:12,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 12:57:12,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:13,356 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:57:13,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:13,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:13,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:13,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:13,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:13,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:57:13,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:13,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:13,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:13,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:13,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:13,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:13,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065267795] [2020-10-29 12:57:13,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:13,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:13,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281916710] [2020-10-29 12:57:13,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:13,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:13,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:13,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:13,417 INFO L87 Difference]: Start difference. First operand 8916 states and 12347 transitions. Second operand 5 states. [2020-10-29 12:57:13,891 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-29 12:57:18,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:18,165 INFO L93 Difference]: Finished difference Result 15980 states and 22113 transitions. [2020-10-29 12:57:18,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:57:18,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-29 12:57:18,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:18,185 INFO L225 Difference]: With dead ends: 15980 [2020-10-29 12:57:18,185 INFO L226 Difference]: Without dead ends: 8976 [2020-10-29 12:57:18,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:18,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8976 states. [2020-10-29 12:57:18,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8976 to 8928. [2020-10-29 12:57:18,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8928 states. [2020-10-29 12:57:18,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8928 states to 8928 states and 12305 transitions. [2020-10-29 12:57:18,814 INFO L78 Accepts]: Start accepts. Automaton has 8928 states and 12305 transitions. Word has length 156 [2020-10-29 12:57:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:18,814 INFO L481 AbstractCegarLoop]: Abstraction has 8928 states and 12305 transitions. [2020-10-29 12:57:18,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:57:18,814 INFO L276 IsEmpty]: Start isEmpty. Operand 8928 states and 12305 transitions. [2020-10-29 12:57:18,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 12:57:18,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:18,826 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] [2020-10-29 12:57:18,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:57:18,826 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:18,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:18,827 INFO L82 PathProgramCache]: Analyzing trace with hash 189299889, now seen corresponding path program 1 times [2020-10-29 12:57:18,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:18,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141088439] [2020-10-29 12:57:18,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:18,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:18,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:18,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:19,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:19,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:19,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:23,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:23,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 12:57:23,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:57:23,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 12:57:23,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:23,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:23,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:57:23,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:57:23,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 12:57:23,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:24,324 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:57:24,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:24,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:24,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:24,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:24,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:24,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:57:24,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:24,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:57:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:24,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:57:24,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:24,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:24,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141088439] [2020-10-29 12:57:24,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:24,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:24,457 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125647646] [2020-10-29 12:57:24,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:57:24,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:24,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:57:24,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:57:24,459 INFO L87 Difference]: Start difference. First operand 8928 states and 12305 transitions. Second operand 6 states. [2020-10-29 12:57:24,946 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-29 12:57:27,311 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-29 12:57:28,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:28,606 INFO L93 Difference]: Finished difference Result 22875 states and 31992 transitions. [2020-10-29 12:57:28,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 12:57:28,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-10-29 12:57:28,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:28,640 INFO L225 Difference]: With dead ends: 22875 [2020-10-29 12:57:28,641 INFO L226 Difference]: Without dead ends: 15301 [2020-10-29 12:57:28,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:57:28,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15301 states. [2020-10-29 12:57:29,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15301 to 15286. [2020-10-29 12:57:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15286 states. [2020-10-29 12:57:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15286 states to 15286 states and 21179 transitions. [2020-10-29 12:57:29,756 INFO L78 Accepts]: Start accepts. Automaton has 15286 states and 21179 transitions. Word has length 157 [2020-10-29 12:57:29,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:29,757 INFO L481 AbstractCegarLoop]: Abstraction has 15286 states and 21179 transitions. [2020-10-29 12:57:29,757 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:57:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 15286 states and 21179 transitions. [2020-10-29 12:57:29,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 12:57:29,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:29,792 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] [2020-10-29 12:57:29,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:57:29,793 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:29,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:29,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1629045937, now seen corresponding path program 1 times [2020-10-29 12:57:29,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:29,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242747645] [2020-10-29 12:57:29,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:29,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:29,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:29,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:30,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:30,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:30,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:34,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:34,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 12:57:34,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:57:34,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 12:57:34,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:34,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:57:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 12:57:34,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 12:57:34,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:35,638 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:57:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:35,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:35,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:35,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:35,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:35,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:57:35,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:35,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:35,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:35,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:35,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242747645] [2020-10-29 12:57:35,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:35,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 12:57:35,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055394137] [2020-10-29 12:57:35,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 12:57:35,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:35,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 12:57:35,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:57:35,734 INFO L87 Difference]: Start difference. First operand 15286 states and 21179 transitions. Second operand 12 states. [2020-10-29 12:57:36,813 WARN L193 SmtUtils]: Spent 971.00 ms on a formula simplification. DAG size of input: 242 DAG size of output: 240 [2020-10-29 12:57:41,124 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 234 [2020-10-29 12:57:42,128 WARN L193 SmtUtils]: Spent 907.00 ms on a formula simplification. DAG size of input: 236 DAG size of output: 234 [2020-10-29 12:57:42,646 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-29 12:57:47,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:57:47,280 INFO L93 Difference]: Finished difference Result 42046 states and 61503 transitions. [2020-10-29 12:57:47,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 12:57:47,281 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 157 [2020-10-29 12:57:47,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:57:47,336 INFO L225 Difference]: With dead ends: 42046 [2020-10-29 12:57:47,336 INFO L226 Difference]: Without dead ends: 35918 [2020-10-29 12:57:47,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2020-10-29 12:57:47,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35918 states. [2020-10-29 12:57:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35918 to 17886. [2020-10-29 12:57:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17886 states. [2020-10-29 12:57:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17886 states to 17886 states and 24331 transitions. [2020-10-29 12:57:49,326 INFO L78 Accepts]: Start accepts. Automaton has 17886 states and 24331 transitions. Word has length 157 [2020-10-29 12:57:49,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:57:49,326 INFO L481 AbstractCegarLoop]: Abstraction has 17886 states and 24331 transitions. [2020-10-29 12:57:49,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 12:57:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 17886 states and 24331 transitions. [2020-10-29 12:57:49,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 12:57:49,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:57:49,347 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] [2020-10-29 12:57:49,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:57:49,349 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:57:49,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:57:49,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1822926408, now seen corresponding path program 1 times [2020-10-29 12:57:49,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:57:49,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435804021] [2020-10-29 12:57:49,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:57:49,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:49,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:49,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:49,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:49,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:49,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:53,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:53,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:53,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:54,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:54,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 12:57:54,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:57:54,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 12:57:54,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:54,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:57:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:57:54,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 12:57:54,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:54,922 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:57:54,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:57:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:57:54,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:57:54,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:57:54,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:57:54,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:57:54,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:57:54,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:57:54,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:57:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:57:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:57:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:57:54,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:57:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:57:54,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435804021] [2020-10-29 12:57:54,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:57:54,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:57:54,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780448720] [2020-10-29 12:57:54,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:57:54,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:57:54,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:57:54,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:57:54,995 INFO L87 Difference]: Start difference. First operand 17886 states and 24331 transitions. Second operand 5 states. [2020-10-29 12:57:59,465 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 12:58:02,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:58:02,266 INFO L93 Difference]: Finished difference Result 48311 states and 65452 transitions. [2020-10-29 12:58:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:58:02,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-29 12:58:02,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:58:02,298 INFO L225 Difference]: With dead ends: 48311 [2020-10-29 12:58:02,299 INFO L226 Difference]: Without dead ends: 31655 [2020-10-29 12:58:02,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:58:02,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31655 states. [2020-10-29 12:58:05,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31655 to 31638. [2020-10-29 12:58:05,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31638 states. [2020-10-29 12:58:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31638 states to 31638 states and 42086 transitions. [2020-10-29 12:58:05,709 INFO L78 Accepts]: Start accepts. Automaton has 31638 states and 42086 transitions. Word has length 157 [2020-10-29 12:58:05,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:58:05,709 INFO L481 AbstractCegarLoop]: Abstraction has 31638 states and 42086 transitions. [2020-10-29 12:58:05,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:58:05,709 INFO L276 IsEmpty]: Start isEmpty. Operand 31638 states and 42086 transitions. [2020-10-29 12:58:05,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 12:58:05,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:58:05,742 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] [2020-10-29 12:58:05,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:58:05,743 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:58:05,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:58:05,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1467182644, now seen corresponding path program 1 times [2020-10-29 12:58:05,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:58:05,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1364363844] [2020-10-29 12:58:05,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:58:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:05,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:05,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:05,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:05,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:06,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:10,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:10,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 12:58:10,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:58:10,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 12:58:10,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:10,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:58:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 12:58:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 12:58:10,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:11,248 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:58:11,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:58:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:11,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:11,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:11,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:58:11,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:58:11,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:58:11,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:11,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:58:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:58:11,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:58:11,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:11,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:58:11,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1364363844] [2020-10-29 12:58:11,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:58:11,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 12:58:11,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650065436] [2020-10-29 12:58:11,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 12:58:11,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:58:11,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 12:58:11,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 12:58:11,299 INFO L87 Difference]: Start difference. First operand 31638 states and 42086 transitions. Second operand 4 states. [2020-10-29 12:58:11,750 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-29 12:58:17,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:58:17,724 INFO L93 Difference]: Finished difference Result 48030 states and 67098 transitions. [2020-10-29 12:58:17,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:58:17,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2020-10-29 12:58:17,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:58:17,771 INFO L225 Difference]: With dead ends: 48030 [2020-10-29 12:58:17,771 INFO L226 Difference]: Without dead ends: 37738 [2020-10-29 12:58:17,787 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:58:17,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37738 states. [2020-10-29 12:58:21,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37738 to 37579. [2020-10-29 12:58:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37579 states. [2020-10-29 12:58:21,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37579 states to 37579 states and 50760 transitions. [2020-10-29 12:58:21,751 INFO L78 Accepts]: Start accepts. Automaton has 37579 states and 50760 transitions. Word has length 158 [2020-10-29 12:58:21,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:58:21,752 INFO L481 AbstractCegarLoop]: Abstraction has 37579 states and 50760 transitions. [2020-10-29 12:58:21,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 12:58:21,752 INFO L276 IsEmpty]: Start isEmpty. Operand 37579 states and 50760 transitions. [2020-10-29 12:58:21,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-29 12:58:21,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:58:21,775 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] [2020-10-29 12:58:21,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:58:21,775 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:58:21,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:58:21,776 INFO L82 PathProgramCache]: Analyzing trace with hash 1456685579, now seen corresponding path program 1 times [2020-10-29 12:58:21,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:58:21,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572501494] [2020-10-29 12:58:21,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:58:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:21,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:21,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:21,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:22,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:22,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:26,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:26,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 12:58:26,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:58:26,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 12:58:26,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:26,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:26,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:58:26,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 12:58:26,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 12:58:26,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:27,386 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:58:27,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:58:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:27,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:27,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:27,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:58:27,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:58:27,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:58:27,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:27,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:58:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:58:27,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:58:27,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:27,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:58:27,456 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572501494] [2020-10-29 12:58:27,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:58:27,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:58:27,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274756324] [2020-10-29 12:58:27,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 12:58:27,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:58:27,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 12:58:27,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 12:58:27,458 INFO L87 Difference]: Start difference. First operand 37579 states and 50760 transitions. Second operand 5 states. [2020-10-29 12:58:32,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:58:32,800 INFO L93 Difference]: Finished difference Result 65874 states and 89111 transitions. [2020-10-29 12:58:32,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 12:58:32,801 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-29 12:58:32,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:58:32,840 INFO L225 Difference]: With dead ends: 65874 [2020-10-29 12:58:32,840 INFO L226 Difference]: Without dead ends: 28549 [2020-10-29 12:58:32,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:58:32,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28549 states. [2020-10-29 12:58:36,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28549 to 28526. [2020-10-29 12:58:36,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28526 states. [2020-10-29 12:58:36,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28526 states to 28526 states and 38657 transitions. [2020-10-29 12:58:36,215 INFO L78 Accepts]: Start accepts. Automaton has 28526 states and 38657 transitions. Word has length 158 [2020-10-29 12:58:36,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:58:36,215 INFO L481 AbstractCegarLoop]: Abstraction has 28526 states and 38657 transitions. [2020-10-29 12:58:36,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 12:58:36,215 INFO L276 IsEmpty]: Start isEmpty. Operand 28526 states and 38657 transitions. [2020-10-29 12:58:36,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 12:58:36,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:58:36,236 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] [2020-10-29 12:58:36,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:58:36,236 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:58:36,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:58:36,237 INFO L82 PathProgramCache]: Analyzing trace with hash -463149233, now seen corresponding path program 1 times [2020-10-29 12:58:36,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:58:36,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161214777] [2020-10-29 12:58:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:58:36,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:36,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:36,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:36,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:36,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:36,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:36,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:37,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:37,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:37,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:41,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:41,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 12:58:41,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 12:58:41,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 12:58:41,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:41,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:58:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:58:41,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 12:58:41,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:41,773 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:58:41,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:58:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:41,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:41,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:41,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:58:41,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:58:41,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 12:58:41,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:41,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:58:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:58:41,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:58:41,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:41,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:58:41,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161214777] [2020-10-29 12:58:41,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:58:41,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:58:41,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509752353] [2020-10-29 12:58:41,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 12:58:41,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:58:41,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 12:58:41,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 12:58:41,865 INFO L87 Difference]: Start difference. First operand 28526 states and 38657 transitions. Second operand 7 states. [2020-10-29 12:58:42,459 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 12:58:45,669 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-29 12:58:48,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:58:48,904 INFO L93 Difference]: Finished difference Result 44934 states and 63799 transitions. [2020-10-29 12:58:48,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 12:58:48,905 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-10-29 12:58:48,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:58:48,942 INFO L225 Difference]: With dead ends: 44934 [2020-10-29 12:58:48,942 INFO L226 Difference]: Without dead ends: 30322 [2020-10-29 12:58:48,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-29 12:58:48,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30322 states. [2020-10-29 12:58:51,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30322 to 22286. [2020-10-29 12:58:51,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22286 states. [2020-10-29 12:58:51,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22286 states to 22286 states and 29601 transitions. [2020-10-29 12:58:51,516 INFO L78 Accepts]: Start accepts. Automaton has 22286 states and 29601 transitions. Word has length 165 [2020-10-29 12:58:51,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:58:51,516 INFO L481 AbstractCegarLoop]: Abstraction has 22286 states and 29601 transitions. [2020-10-29 12:58:51,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 12:58:51,516 INFO L276 IsEmpty]: Start isEmpty. Operand 22286 states and 29601 transitions. [2020-10-29 12:58:51,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 12:58:51,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:58:51,535 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] [2020-10-29 12:58:51,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:58:51,535 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:58:51,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:58:51,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1631253772, now seen corresponding path program 1 times [2020-10-29 12:58:51,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:58:51,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44037775] [2020-10-29 12:58:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:58:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:51,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:51,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:51,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:51,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:51,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:52,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:52,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:56,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:56,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 12:58:56,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:58:56,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 12:58:56,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:56,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 12:58:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:58:56,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 12:58:56,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:57,272 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:58:57,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:58:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:58:57,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:58:57,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:58:57,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:58:57,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:58:57,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:58:57,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:58:57,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:58:57,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:58:57,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:58:57,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:58:57,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:58:57,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:58:57,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44037775] [2020-10-29 12:58:57,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:58:57,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:58:57,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360582618] [2020-10-29 12:58:57,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 12:58:57,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:58:57,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 12:58:57,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-29 12:58:57,357 INFO L87 Difference]: Start difference. First operand 22286 states and 29601 transitions. Second operand 11 states. [2020-10-29 12:58:57,888 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-29 12:59:03,264 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-29 12:59:04,637 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-29 12:59:08,824 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-29 12:59:10,420 WARN L193 SmtUtils]: Spent 489.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-29 12:59:18,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:59:18,072 INFO L93 Difference]: Finished difference Result 96967 states and 136524 transitions. [2020-10-29 12:59:18,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 12:59:18,072 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 165 [2020-10-29 12:59:18,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:59:18,170 INFO L225 Difference]: With dead ends: 96967 [2020-10-29 12:59:18,170 INFO L226 Difference]: Without dead ends: 80846 [2020-10-29 12:59:18,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-29 12:59:18,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80846 states. [2020-10-29 12:59:23,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80846 to 30304. [2020-10-29 12:59:23,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30304 states. [2020-10-29 12:59:23,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30304 states to 30304 states and 41045 transitions. [2020-10-29 12:59:23,158 INFO L78 Accepts]: Start accepts. Automaton has 30304 states and 41045 transitions. Word has length 165 [2020-10-29 12:59:23,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:59:23,158 INFO L481 AbstractCegarLoop]: Abstraction has 30304 states and 41045 transitions. [2020-10-29 12:59:23,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 12:59:23,159 INFO L276 IsEmpty]: Start isEmpty. Operand 30304 states and 41045 transitions. [2020-10-29 12:59:23,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-29 12:59:23,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:59:23,177 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] [2020-10-29 12:59:23,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:59:23,178 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:59:23,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:59:23,178 INFO L82 PathProgramCache]: Analyzing trace with hash 369725324, now seen corresponding path program 1 times [2020-10-29 12:59:23,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:59:23,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644981093] [2020-10-29 12:59:23,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:59:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:59:23,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:23,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:23,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:23,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:23,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:24,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:28,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:28,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:28,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:59:28,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 12:59:28,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 12:59:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 12:59:28,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:59:28,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:59:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:59:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:59:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 12:59:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:59:28,723 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-29 12:59:28,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:59:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:59:28,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:59:28,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:59:28,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:59:28,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:59:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 12:59:28,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:59:28,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:59:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:59:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:59:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:59:28,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:59:28,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:59:28,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644981093] [2020-10-29 12:59:28,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:59:28,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 12:59:28,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221706361] [2020-10-29 12:59:28,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:59:28,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:59:28,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:59:28,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:59:28,942 INFO L87 Difference]: Start difference. First operand 30304 states and 41045 transitions. Second operand 6 states. [2020-10-29 12:59:29,467 WARN L193 SmtUtils]: Spent 463.00 ms on a formula simplification that was a NOOP. DAG size: 229