/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/eca-rers2012/Problem18_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:33:38,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:33:38,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:33:38,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:33:38,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:33:38,700 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:33:38,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:33:38,704 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:33:38,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:33:38,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:33:38,709 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:33:38,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:33:38,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:33:38,713 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:33:38,715 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:33:38,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:33:38,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:33:38,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:33:38,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:33:38,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:33:38,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:33:38,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:33:38,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:33:38,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:33:38,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:33:38,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:33:38,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:33:38,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:33:38,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:33:38,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:33:38,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:33:38,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:33:38,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:33:38,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:33:38,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:33:38,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:33:38,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:33:38,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:33:38,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:33:38,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:33:38,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:33:38,753 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 08:33:38,797 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:33:38,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:33:38,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:33:38,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:33:38,800 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:33:38,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:33:38,801 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:33:38,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:33:38,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:33:38,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:33:38,802 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:33:38,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:33:38,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:33:38,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:33:38,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:33:38,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:33:38,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:33:38,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:33:38,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:33:38,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:33:38,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:33:38,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:33:38,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:33:38,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:33:38,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:33:38,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:33:38,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:33:38,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:33:38,806 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:33:38,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:33:39,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:33:39,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:33:39,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:33:39,285 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:33:39,286 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:33:39,287 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label26.c [2020-10-29 08:33:39,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91cd89017/d8854d848c464fe0845e6304f3bc323a/FLAG005ad4367 [2020-10-29 08:33:40,533 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:33:40,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label26.c [2020-10-29 08:33:40,574 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91cd89017/d8854d848c464fe0845e6304f3bc323a/FLAG005ad4367 [2020-10-29 08:33:40,968 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91cd89017/d8854d848c464fe0845e6304f3bc323a [2020-10-29 08:33:40,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:33:40,979 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:33:40,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:33:40,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:33:40,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:33:40,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:33:40" (1/1) ... [2020-10-29 08:33:40,995 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fbbf111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:33:40, skipping insertion in model container [2020-10-29 08:33:40,995 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:33:40" (1/1) ... [2020-10-29 08:33:41,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:33:41,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:33:42,293 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:33:42,310 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:33:42,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:33:42,901 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:33:42,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:33:42 WrapperNode [2020-10-29 08:33:42,902 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:33:42,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:33:42,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:33:42,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:33:42,919 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:33:42" (1/1) ... [2020-10-29 08:33:42,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:33:42" (1/1) ... [2020-10-29 08:33:43,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:33:42" (1/1) ... [2020-10-29 08:33:43,016 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:33:42" (1/1) ... [2020-10-29 08:33:43,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:33:42" (1/1) ... [2020-10-29 08:33:43,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:33:42" (1/1) ... [2020-10-29 08:33:43,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:33:42" (1/1) ... [2020-10-29 08:33:43,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:33:43,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:33:43,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:33:43,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:33:43,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:33:42" (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 08:33:43,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:33:43,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:33:43,301 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:33:43,301 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:33:43,302 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:33:43,302 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 08:33:43,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:33:43,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:33:43,302 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:33:43,303 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 08:33:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:33:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:33:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:33:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:33:43,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:33:43,305 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:33:43,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:33:43,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:33:43,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:33:43,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:33:43,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:33:43,307 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:33:43,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:33:48,031 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:33:48,031 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:33:48,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:33:48 BoogieIcfgContainer [2020-10-29 08:33:48,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:33:48,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:33:48,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:33:48,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:33:48,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:33:40" (1/3) ... [2020-10-29 08:33:48,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b10216c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:33:48, skipping insertion in model container [2020-10-29 08:33:48,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:33:42" (2/3) ... [2020-10-29 08:33:48,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b10216c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:33:48, skipping insertion in model container [2020-10-29 08:33:48,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:33:48" (3/3) ... [2020-10-29 08:33:48,082 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label26.c [2020-10-29 08:33:48,095 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:33:48,101 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:33:48,116 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:33:48,150 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:33:48,150 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:33:48,151 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:33:48,151 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:33:48,151 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:33:48,151 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:33:48,151 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:33:48,151 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:33:48,187 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-29 08:33:48,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 08:33:48,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:33:48,199 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] [2020-10-29 08:33:48,199 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:33:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:33:48,206 INFO L82 PathProgramCache]: Analyzing trace with hash -514881776, now seen corresponding path program 1 times [2020-10-29 08:33:48,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:33:48,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072853489] [2020-10-29 08:33:48,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:33:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:48,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:49,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:49,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 08:33:49,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-29 08:33:49,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:49,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:33:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:33:49,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:33:49,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:33:49,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:33:49,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:33:49,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:33:49,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:33:49,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:33:49,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:33:49,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 08:33:49,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:33:49,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:33:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:33:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:33:49,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:33:49,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:33:49,420 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 08:33:49,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072853489] [2020-10-29 08:33:49,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:33:49,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 08:33:49,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270058268] [2020-10-29 08:33:49,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:33:49,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:33:49,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:33:49,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:33:49,455 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-29 08:34:03,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:34:03,878 INFO L93 Difference]: Finished difference Result 2989 states and 5775 transitions. [2020-10-29 08:34:03,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:34:03,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 69 [2020-10-29 08:34:03,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:34:03,923 INFO L225 Difference]: With dead ends: 2989 [2020-10-29 08:34:03,923 INFO L226 Difference]: Without dead ends: 2143 [2020-10-29 08:34:03,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:34:03,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-29 08:34:04,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-29 08:34:04,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-29 08:34:04,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3572 transitions. [2020-10-29 08:34:04,141 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3572 transitions. Word has length 69 [2020-10-29 08:34:04,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:34:04,142 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3572 transitions. [2020-10-29 08:34:04,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:34:04,142 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3572 transitions. [2020-10-29 08:34:04,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-29 08:34:04,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:34:04,150 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:34:04,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:34:04,150 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:34:04,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:34:04,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1897889653, now seen corresponding path program 1 times [2020-10-29 08:34:04,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:34:04,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544095528] [2020-10-29 08:34:04,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:34:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:04,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:04,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:05,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:05,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-29 08:34:05,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:34:05,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 940 [2020-10-29 08:34:05,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:05,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:05,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 08:34:05,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:34:05,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:34:05,391 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 08:34:05,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:34:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:05,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:05,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:05,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:34:05,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:05,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:34:05,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:05,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:05,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:05,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:05,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:05,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:34:05,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:34:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:05,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:05,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:05,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:34:05,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:05,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 08:34:05,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:05,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:05,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 08:34:05,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:34:05,615 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:34:05,616 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544095528] [2020-10-29 08:34:05,616 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:34:05,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:34:05,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383676435] [2020-10-29 08:34:05,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:34:05,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:34:05,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:34:05,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:34:05,623 INFO L87 Difference]: Start difference. First operand 2136 states and 3572 transitions. Second operand 5 states. [2020-10-29 08:34:15,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:34:15,466 INFO L93 Difference]: Finished difference Result 6402 states and 10796 transitions. [2020-10-29 08:34:15,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:34:15,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 140 [2020-10-29 08:34:15,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:34:15,504 INFO L225 Difference]: With dead ends: 6402 [2020-10-29 08:34:15,504 INFO L226 Difference]: Without dead ends: 4272 [2020-10-29 08:34:15,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:34:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2020-10-29 08:34:15,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 4268. [2020-10-29 08:34:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4268 states. [2020-10-29 08:34:15,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4268 states to 4268 states and 6376 transitions. [2020-10-29 08:34:15,698 INFO L78 Accepts]: Start accepts. Automaton has 4268 states and 6376 transitions. Word has length 140 [2020-10-29 08:34:15,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:34:15,701 INFO L481 AbstractCegarLoop]: Abstraction has 4268 states and 6376 transitions. [2020-10-29 08:34:15,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:34:15,701 INFO L276 IsEmpty]: Start isEmpty. Operand 4268 states and 6376 transitions. [2020-10-29 08:34:15,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 08:34:15,714 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:34:15,714 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:34:15,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:34:15,715 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:34:15,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:34:15,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1823731635, now seen corresponding path program 1 times [2020-10-29 08:34:15,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:34:15,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [947524186] [2020-10-29 08:34:15,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:34:15,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:15,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:16,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:16,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:16,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 08:34:16,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:34:16,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-10-29 08:34:16,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:16,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:34:16,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:34:16,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:34:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:16,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:16,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:16,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:34:16,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:16,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:34:16,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:16,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:16,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:16,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:16,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:34:16,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:34:16,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:16,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:16,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:16,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:34:16,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:16,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-29 08:34:16,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:16,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:34:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:16,972 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 60 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:34:16,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [947524186] [2020-10-29 08:34:16,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:34:16,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:34:16,973 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156348431] [2020-10-29 08:34:16,974 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:34:16,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:34:16,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:34:16,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:34:16,975 INFO L87 Difference]: Start difference. First operand 4268 states and 6376 transitions. Second operand 5 states. [2020-10-29 08:34:28,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:34:28,422 INFO L93 Difference]: Finished difference Result 12790 states and 19368 transitions. [2020-10-29 08:34:28,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:34:28,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-10-29 08:34:28,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:34:28,474 INFO L225 Difference]: With dead ends: 12790 [2020-10-29 08:34:28,475 INFO L226 Difference]: Without dead ends: 8528 [2020-10-29 08:34:28,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:34:28,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8528 states. [2020-10-29 08:34:28,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8528 to 8524. [2020-10-29 08:34:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8524 states. [2020-10-29 08:34:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8524 states to 8524 states and 12446 transitions. [2020-10-29 08:34:28,788 INFO L78 Accepts]: Start accepts. Automaton has 8524 states and 12446 transitions. Word has length 141 [2020-10-29 08:34:28,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:34:28,792 INFO L481 AbstractCegarLoop]: Abstraction has 8524 states and 12446 transitions. [2020-10-29 08:34:28,795 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:34:28,795 INFO L276 IsEmpty]: Start isEmpty. Operand 8524 states and 12446 transitions. [2020-10-29 08:34:28,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-29 08:34:28,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:34:28,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:34:28,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:34:28,806 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:34:28,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:34:28,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1455185815, now seen corresponding path program 1 times [2020-10-29 08:34:28,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:34:28,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3201689] [2020-10-29 08:34:28,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:34:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:28,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:29,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:30,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:31,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:31,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-29 08:34:31,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:34:31,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2178 [2020-10-29 08:34:31,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:31,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:34:31,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:34:31,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-29 08:34:31,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:31,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:34:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:31,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:31,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:31,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:34:31,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:31,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:34:31,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:31,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:31,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:31,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:31,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:34:31,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:31,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:34:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:31,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:31,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:31,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:34:31,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:31,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-29 08:34:31,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:31,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 08:34:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:31,657 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:34:31,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3201689] [2020-10-29 08:34:31,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:34:31,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 08:34:31,658 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56096734] [2020-10-29 08:34:31,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:34:31,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:34:31,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:34:31,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:34:31,660 INFO L87 Difference]: Start difference. First operand 8524 states and 12446 transitions. Second operand 8 states. [2020-10-29 08:34:45,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:34:45,890 INFO L93 Difference]: Finished difference Result 20728 states and 30653 transitions. [2020-10-29 08:34:45,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 08:34:45,891 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-10-29 08:34:45,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:34:45,959 INFO L225 Difference]: With dead ends: 20728 [2020-10-29 08:34:45,959 INFO L226 Difference]: Without dead ends: 12210 [2020-10-29 08:34:45,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 08:34:45,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12210 states. [2020-10-29 08:34:46,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12210 to 10068. [2020-10-29 08:34:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10068 states. [2020-10-29 08:34:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10068 states to 10068 states and 13249 transitions. [2020-10-29 08:34:46,290 INFO L78 Accepts]: Start accepts. Automaton has 10068 states and 13249 transitions. Word has length 219 [2020-10-29 08:34:46,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:34:46,290 INFO L481 AbstractCegarLoop]: Abstraction has 10068 states and 13249 transitions. [2020-10-29 08:34:46,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:34:46,290 INFO L276 IsEmpty]: Start isEmpty. Operand 10068 states and 13249 transitions. [2020-10-29 08:34:46,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-29 08:34:46,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:34:46,296 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:34:46,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:34:46,297 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:34:46,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:34:46,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1093786230, now seen corresponding path program 1 times [2020-10-29 08:34:46,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:34:46,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1169889134] [2020-10-29 08:34:46,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:34:46,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:46,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:46,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:48,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:51,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:51,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-29 08:34:51,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:34:51,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 08:34:51,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:51,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:51,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:34:51,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:34:51,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:51,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:34:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:51,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:51,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:51,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:34:51,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:51,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:34:51,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:51,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:34:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:51,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:34:51,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:34:51,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:34:51,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:51,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:51,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:51,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:34:51,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:51,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 08:34:51,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:51,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:51,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:34:51,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:34:51,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:34:51,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:34:51,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:34:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:34:51,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:34:51,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:34:51,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:34:51,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:34:51,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 08:34:51,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:34:51,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:34:51,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:34:51,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:34:51,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:34:51,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:34:51,900 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:34:51,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1169889134] [2020-10-29 08:34:51,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:34:51,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:34:51,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325209963] [2020-10-29 08:34:51,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:34:51,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:34:51,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:34:51,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:34:51,903 INFO L87 Difference]: Start difference. First operand 10068 states and 13249 transitions. Second operand 7 states. [2020-10-29 08:35:05,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:35:05,896 INFO L93 Difference]: Finished difference Result 26025 states and 35294 transitions. [2020-10-29 08:35:05,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:35:05,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 235 [2020-10-29 08:35:05,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:35:05,951 INFO L225 Difference]: With dead ends: 26025 [2020-10-29 08:35:05,951 INFO L226 Difference]: Without dead ends: 15963 [2020-10-29 08:35:05,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:35:05,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15963 states. [2020-10-29 08:35:06,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15963 to 15246. [2020-10-29 08:35:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15246 states. [2020-10-29 08:35:06,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15246 states to 15246 states and 19823 transitions. [2020-10-29 08:35:06,428 INFO L78 Accepts]: Start accepts. Automaton has 15246 states and 19823 transitions. Word has length 235 [2020-10-29 08:35:06,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:35:06,429 INFO L481 AbstractCegarLoop]: Abstraction has 15246 states and 19823 transitions. [2020-10-29 08:35:06,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:35:06,429 INFO L276 IsEmpty]: Start isEmpty. Operand 15246 states and 19823 transitions. [2020-10-29 08:35:06,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-29 08:35:06,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:35:06,436 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:35:06,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:35:06,437 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:35:06,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:35:06,438 INFO L82 PathProgramCache]: Analyzing trace with hash -296077630, now seen corresponding path program 1 times [2020-10-29 08:35:06,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:35:06,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742000966] [2020-10-29 08:35:06,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:35:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:06,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:06,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:06,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:08,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:11,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:11,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-29 08:35:11,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:35:11,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4787 [2020-10-29 08:35:11,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:11,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:11,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:35:11,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-29 08:35:11,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:35:11,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:35:11,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:35:11,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:11,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:11,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:11,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:35:11,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:11,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:35:11,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:11,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:35:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:35:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:35:11,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:35:11,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:35:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:11,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:11,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:11,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 08:35:11,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:11,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 08:35:11,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:11,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:11,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:35:11,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:35:11,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 08:35:11,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:35:11,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 08:35:11,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:11,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:11,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:11,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:35:11,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:11,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 08:35:11,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:11,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:35:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:35:11,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 08:35:11,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:35:12,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742000966] [2020-10-29 08:35:12,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:35:12,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:35:12,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531909736] [2020-10-29 08:35:12,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:35:12,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:35:12,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:35:12,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:35:12,028 INFO L87 Difference]: Start difference. First operand 15246 states and 19823 transitions. Second operand 8 states. [2020-10-29 08:35:29,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:35:29,932 INFO L93 Difference]: Finished difference Result 39360 states and 51454 transitions. [2020-10-29 08:35:29,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 08:35:29,934 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 252 [2020-10-29 08:35:29,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:35:30,001 INFO L225 Difference]: With dead ends: 39360 [2020-10-29 08:35:30,001 INFO L226 Difference]: Without dead ends: 21830 [2020-10-29 08:35:30,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 08:35:30,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21830 states. [2020-10-29 08:35:30,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21830 to 19667. [2020-10-29 08:35:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19667 states. [2020-10-29 08:35:30,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19667 states to 19667 states and 22178 transitions. [2020-10-29 08:35:30,574 INFO L78 Accepts]: Start accepts. Automaton has 19667 states and 22178 transitions. Word has length 252 [2020-10-29 08:35:30,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:35:30,575 INFO L481 AbstractCegarLoop]: Abstraction has 19667 states and 22178 transitions. [2020-10-29 08:35:30,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:35:30,575 INFO L276 IsEmpty]: Start isEmpty. Operand 19667 states and 22178 transitions. [2020-10-29 08:35:30,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2020-10-29 08:35:30,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:35:30,594 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:35:30,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:35:30,595 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:35:30,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:35:30,596 INFO L82 PathProgramCache]: Analyzing trace with hash 325777639, now seen corresponding path program 1 times [2020-10-29 08:35:30,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:35:30,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62309507] [2020-10-29 08:35:30,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:35:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:30,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:30,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:31,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:31,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:35,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:35,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 413 [2020-10-29 08:35:35,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:35:35,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 08:35:35,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:35,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:35,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:35:35,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:35:35,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 08:35:35,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:35,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:35:35,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:35,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:35,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:35,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:35:35,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:35,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:35:35,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:35,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:35,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:35:35,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:35:35,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:35:35,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:35,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:35:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:35,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:35,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:35,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:35:35,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:35,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 08:35:35,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:35,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:35:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:35:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:35:35,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:35,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:35:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:36,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:36,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:36,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 08:35:36,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:36,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 08:35:36,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:36,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:35:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:35:36,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 08:35:36,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:35:36,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-29 08:35:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:36,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:35:36,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:35:36,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:35:36,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 08:35:36,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:35:36,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:35:36,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:35:36,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-29 08:35:36,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:35:36,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:35:36,988 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 256 proven. 105 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 08:35:36,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62309507] [2020-10-29 08:35:36,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:35:36,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:35:36,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539094689] [2020-10-29 08:35:36,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:35:36,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:35:36,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:35:36,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:35:36,992 INFO L87 Difference]: Start difference. First operand 19667 states and 22178 transitions. Second operand 8 states. [2020-10-29 08:35:56,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:35:56,069 INFO L93 Difference]: Finished difference Result 43181 states and 49967 transitions. [2020-10-29 08:35:56,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:35:56,070 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 397 [2020-10-29 08:35:56,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:35:56,141 INFO L225 Difference]: With dead ends: 43181 [2020-10-29 08:35:56,141 INFO L226 Difference]: Without dead ends: 23520 [2020-10-29 08:35:56,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:35:56,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23520 states. [2020-10-29 08:35:56,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23520 to 23321. [2020-10-29 08:35:56,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23321 states. [2020-10-29 08:35:56,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23321 states to 23321 states and 26195 transitions. [2020-10-29 08:35:56,647 INFO L78 Accepts]: Start accepts. Automaton has 23321 states and 26195 transitions. Word has length 397 [2020-10-29 08:35:56,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:35:56,648 INFO L481 AbstractCegarLoop]: Abstraction has 23321 states and 26195 transitions. [2020-10-29 08:35:56,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:35:56,648 INFO L276 IsEmpty]: Start isEmpty. Operand 23321 states and 26195 transitions. [2020-10-29 08:35:56,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-29 08:35:56,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:35:56,667 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:35:56,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:35:56,668 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:35:56,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:35:56,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1391755827, now seen corresponding path program 1 times [2020-10-29 08:35:56,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:35:56,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17061229] [2020-10-29 08:35:56,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:35:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:35:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:56,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:57,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:35:57,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:01,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:01,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-29 08:36:01,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:36:01,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 08:36:01,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:01,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:01,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:36:01,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 207 [2020-10-29 08:36:01,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-29 08:36:01,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:01,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:36:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:01,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:01,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:01,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:36:01,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:01,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:36:01,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:01,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:01,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:01,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:01,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:01,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:01,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:36:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:01,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:01,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:01,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 08:36:01,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:01,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 08:36:01,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:01,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:01,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:01,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:01,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 08:36:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:01,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:02,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:02,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 08:36:02,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:02,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 08:36:02,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:02,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:36:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:02,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-29 08:36:02,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:02,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-10-29 08:36:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:02,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:02,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:02,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:36:02,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:02,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 08:36:02,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:02,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:02,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:36:02,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:36:02,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 08:36:02,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 467 backedges. 377 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 08:36:02,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17061229] [2020-10-29 08:36:02,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:36:02,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:36:02,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311940381] [2020-10-29 08:36:02,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:36:02,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:36:02,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:36:02,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:36:02,828 INFO L87 Difference]: Start difference. First operand 23321 states and 26195 transitions. Second operand 7 states. [2020-10-29 08:36:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:36:14,614 INFO L93 Difference]: Finished difference Result 54196 states and 63764 transitions. [2020-10-29 08:36:14,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:36:14,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 414 [2020-10-29 08:36:14,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:36:14,713 INFO L225 Difference]: With dead ends: 54196 [2020-10-29 08:36:14,713 INFO L226 Difference]: Without dead ends: 30881 [2020-10-29 08:36:14,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:36:14,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30881 states. [2020-10-29 08:36:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30881 to 29959. [2020-10-29 08:36:15,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29959 states. [2020-10-29 08:36:15,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29959 states to 29959 states and 33883 transitions. [2020-10-29 08:36:15,368 INFO L78 Accepts]: Start accepts. Automaton has 29959 states and 33883 transitions. Word has length 414 [2020-10-29 08:36:15,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:36:15,369 INFO L481 AbstractCegarLoop]: Abstraction has 29959 states and 33883 transitions. [2020-10-29 08:36:15,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:36:15,369 INFO L276 IsEmpty]: Start isEmpty. Operand 29959 states and 33883 transitions. [2020-10-29 08:36:15,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-29 08:36:15,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:36:15,393 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:36:15,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:36:15,393 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:36:15,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:36:15,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1034601031, now seen corresponding path program 1 times [2020-10-29 08:36:15,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:36:15,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5961901] [2020-10-29 08:36:15,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:36:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:15,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:15,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:16,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:18,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:19,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:20,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:20,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 461 [2020-10-29 08:36:20,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:36:20,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 08:36:20,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:20,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:36:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-29 08:36:20,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-29 08:36:20,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:20,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:36:20,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:20,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:20,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:20,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:36:20,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:20,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:36:20,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:20,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:20,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:20,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:20,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:36:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:20,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:20,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:20,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:36:20,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:20,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 08:36:20,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:20,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:20,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:36:20,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:20,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 08:36:20,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:20,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:36:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:20,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:20,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:20,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-29 08:36:20,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:20,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-29 08:36:20,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:20,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:36:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:36:20,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-29 08:36:20,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:21,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2020-10-29 08:36:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:21,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:21,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 08:36:21,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:21,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 08:36:21,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:21,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-29 08:36:21,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:21,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:21,367 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 256 proven. 93 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 08:36:21,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5961901] [2020-10-29 08:36:21,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:36:21,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:36:21,367 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578742816] [2020-10-29 08:36:21,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:36:21,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:36:21,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:36:21,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:36:21,369 INFO L87 Difference]: Start difference. First operand 29959 states and 33883 transitions. Second operand 7 states. [2020-10-29 08:36:31,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:36:31,767 INFO L93 Difference]: Finished difference Result 57889 states and 65722 transitions. [2020-10-29 08:36:31,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:36:31,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 445 [2020-10-29 08:36:31,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:36:31,946 INFO L225 Difference]: With dead ends: 57889 [2020-10-29 08:36:31,946 INFO L226 Difference]: Without dead ends: 27936 [2020-10-29 08:36:31,981 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 08:36:32,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27936 states. [2020-10-29 08:36:32,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27936 to 27878. [2020-10-29 08:36:32,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27878 states. [2020-10-29 08:36:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27878 states to 27878 states and 31142 transitions. [2020-10-29 08:36:32,554 INFO L78 Accepts]: Start accepts. Automaton has 27878 states and 31142 transitions. Word has length 445 [2020-10-29 08:36:32,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:36:32,555 INFO L481 AbstractCegarLoop]: Abstraction has 27878 states and 31142 transitions. [2020-10-29 08:36:32,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:36:32,555 INFO L276 IsEmpty]: Start isEmpty. Operand 27878 states and 31142 transitions. [2020-10-29 08:36:32,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 552 [2020-10-29 08:36:32,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:36:32,596 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:36:32,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:36:32,596 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:36:32,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:36:32,597 INFO L82 PathProgramCache]: Analyzing trace with hash 273457661, now seen corresponding path program 1 times [2020-10-29 08:36:32,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:36:32,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468850376] [2020-10-29 08:36:32,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:36:32,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:32,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:32,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:32,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:36,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:37,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:37,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:37,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 567 [2020-10-29 08:36:37,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:36:37,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-29 08:36:37,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:37,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:36:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-10-29 08:36:37,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 398 [2020-10-29 08:36:37,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:37,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:36:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:37,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:37,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:36:37,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:37,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:36:37,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:37,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:37,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:37,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:37,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:36:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:37,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:37,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:37,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 08:36:37,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:37,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 08:36:37,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:37,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:37,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:36:37,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:37,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 08:36:37,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:37,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-29 08:36:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:38,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:38,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:38,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:38,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-29 08:36:38,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:36:38,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 387 [2020-10-29 08:36:38,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:38,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:36:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:36:38,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 244 [2020-10-29 08:36:38,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:38,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-29 08:36:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:38,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:38,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:38,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:36:38,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:38,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 08:36:38,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:38,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:36:38,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:36:38,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 08:36:38,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 355 proven. 6 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2020-10-29 08:36:39,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468850376] [2020-10-29 08:36:39,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:36:39,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:36:39,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871009336] [2020-10-29 08:36:39,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:36:39,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:36:39,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:36:39,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:36:39,141 INFO L87 Difference]: Start difference. First operand 27878 states and 31142 transitions. Second operand 7 states. [2020-10-29 08:36:50,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:36:50,784 INFO L93 Difference]: Finished difference Result 76449 states and 87408 transitions. [2020-10-29 08:36:50,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:36:50,786 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 551 [2020-10-29 08:36:50,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:36:50,933 INFO L225 Difference]: With dead ends: 76449 [2020-10-29 08:36:50,933 INFO L226 Difference]: Without dead ends: 48577 [2020-10-29 08:36:50,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:36:51,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48577 states. [2020-10-29 08:36:51,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48577 to 47767. [2020-10-29 08:36:51,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47767 states. [2020-10-29 08:36:52,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47767 states to 47767 states and 53220 transitions. [2020-10-29 08:36:52,095 INFO L78 Accepts]: Start accepts. Automaton has 47767 states and 53220 transitions. Word has length 551 [2020-10-29 08:36:52,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:36:52,096 INFO L481 AbstractCegarLoop]: Abstraction has 47767 states and 53220 transitions. [2020-10-29 08:36:52,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:36:52,096 INFO L276 IsEmpty]: Start isEmpty. Operand 47767 states and 53220 transitions. [2020-10-29 08:36:52,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2020-10-29 08:36:52,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:36:52,126 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:36:52,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 08:36:52,127 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:36:52,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:36:52,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1360111781, now seen corresponding path program 1 times [2020-10-29 08:36:52,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:36:52,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [128082002] [2020-10-29 08:36:52,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:36:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:52,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:52,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:52,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:53,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:57,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:57,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 595 [2020-10-29 08:36:57,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:36:57,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 08:36:57,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:57,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:57,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:36:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 372 [2020-10-29 08:36:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-29 08:36:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:57,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:36:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:57,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:57,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:57,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:36:57,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 08:36:57,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:57,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:57,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:57,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:57,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:36:57,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:57,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:57,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:57,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 08:36:57,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:57,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:36:57,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:57,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:57,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:57,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 08:36:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:57,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:57,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:57,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 08:36:57,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:57,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 08:36:57,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:57,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:57,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:57,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:57,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-29 08:36:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:57,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:57,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:57,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:36:57,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:57,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:36:57,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:57,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:36:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:57,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:36:57,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:57,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-10-29 08:36:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:57,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:57,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:57,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 08:36:57,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:57,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 08:36:57,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:57,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:57,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:36:57,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:36:57,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 08:36:57,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:57,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-10-29 08:36:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:36:57,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:36:57,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:36:57,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 08:36:57,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:36:57,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 08:36:57,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:36:57,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:36:57,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:36:57,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:36:57,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 08:36:57,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:36:58,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1121 backedges. 664 proven. 2 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2020-10-29 08:36:58,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [128082002] [2020-10-29 08:36:58,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:36:58,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:36:58,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226392713] [2020-10-29 08:36:58,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:36:58,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:36:58,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:36:58,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:36:58,207 INFO L87 Difference]: Start difference. First operand 47767 states and 53220 transitions. Second operand 7 states. [2020-10-29 08:37:11,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:37:11,875 INFO L93 Difference]: Finished difference Result 99379 states and 113126 transitions. [2020-10-29 08:37:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:37:11,877 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 575 [2020-10-29 08:37:11,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:37:12,155 INFO L225 Difference]: With dead ends: 99379 [2020-10-29 08:37:12,155 INFO L226 Difference]: Without dead ends: 51618 [2020-10-29 08:37:12,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:37:12,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51618 states. [2020-10-29 08:37:13,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51618 to 51307. [2020-10-29 08:37:13,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51307 states. [2020-10-29 08:37:13,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51307 states to 51307 states and 57152 transitions. [2020-10-29 08:37:13,423 INFO L78 Accepts]: Start accepts. Automaton has 51307 states and 57152 transitions. Word has length 575 [2020-10-29 08:37:13,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:37:13,424 INFO L481 AbstractCegarLoop]: Abstraction has 51307 states and 57152 transitions. [2020-10-29 08:37:13,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:37:13,424 INFO L276 IsEmpty]: Start isEmpty. Operand 51307 states and 57152 transitions. [2020-10-29 08:37:13,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2020-10-29 08:37:13,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:37:13,459 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:37:13,459 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 08:37:13,460 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:37:13,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:37:13,460 INFO L82 PathProgramCache]: Analyzing trace with hash -2004424128, now seen corresponding path program 1 times [2020-10-29 08:37:13,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:37:13,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902181689] [2020-10-29 08:37:13,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:37:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:37:13,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:13,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:37:14,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking...