/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/Problem17_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:18:23,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:18:23,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:18:23,686 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:18:23,687 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:18:23,696 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:18:23,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:18:23,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:18:23,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:18:23,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:18:23,721 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:18:23,724 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:18:23,724 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:18:23,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:18:23,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:18:23,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:18:23,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:18:23,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:18:23,739 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:18:23,742 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:18:23,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:18:23,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:18:23,748 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:18:23,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:18:23,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:18:23,754 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:18:23,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:18:23,756 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:18:23,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:18:23,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:18:23,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:18:23,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:18:23,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:18:23,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:18:23,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:18:23,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:18:23,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:18:23,766 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:18:23,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:18:23,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:18:23,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:18:23,769 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 08:18:23,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:18:23,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:18:23,802 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:18:23,803 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:18:23,803 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:18:23,803 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:18:23,803 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:18:23,804 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:18:23,804 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:18:23,804 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:18:23,804 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:18:23,804 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:18:23,805 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:18:23,805 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:18:23,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:18:23,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:18:23,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:18:23,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:18:23,806 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:18:23,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:18:23,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:18:23,807 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:18:23,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:18:23,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:18:23,807 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:18:23,808 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:18:23,808 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:18:23,808 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:18:23,808 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:18:23,808 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:18:24,330 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:18:24,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:18:24,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:18:24,390 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:18:24,391 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:18:24,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label30.c [2020-10-29 08:18:24,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3146afae/9f7822ccd0cd417bba8c89d41d27ccc0/FLAG5a5abef87 [2020-10-29 08:18:25,618 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:18:25,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label30.c [2020-10-29 08:18:25,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3146afae/9f7822ccd0cd417bba8c89d41d27ccc0/FLAG5a5abef87 [2020-10-29 08:18:26,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b3146afae/9f7822ccd0cd417bba8c89d41d27ccc0 [2020-10-29 08:18:26,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:18:26,105 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:18:26,114 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:18:26,114 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:18:26,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:18:26,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:18:26" (1/1) ... [2020-10-29 08:18:26,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33a6a057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:26, skipping insertion in model container [2020-10-29 08:18:26,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:18:26" (1/1) ... [2020-10-29 08:18:26,142 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:18:26,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:18:27,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:18:27,383 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:18:27,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:18:27,907 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:18:27,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:27 WrapperNode [2020-10-29 08:18:27,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:18:27,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:18:27,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:18:27,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:18:27,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:27" (1/1) ... [2020-10-29 08:18:27,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:27" (1/1) ... [2020-10-29 08:18:28,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:27" (1/1) ... [2020-10-29 08:18:28,011 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:27" (1/1) ... [2020-10-29 08:18:28,136 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:27" (1/1) ... [2020-10-29 08:18:28,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:27" (1/1) ... [2020-10-29 08:18:28,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:27" (1/1) ... [2020-10-29 08:18:28,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:18:28,261 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:18:28,261 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:18:28,261 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:18:28,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:27" (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 08:18:28,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:18:28,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:18:28,368 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:18:28,369 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:18:28,369 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:18:28,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:18:28,369 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:18:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:18:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:18:28,370 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:18:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:18:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:18:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:18:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:18:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:18:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:18:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:18:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:18:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:18:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:18:28,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:18:38,202 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:18:38,202 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:18:38,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:18:38 BoogieIcfgContainer [2020-10-29 08:18:38,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:18:38,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:18:38,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:18:38,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:18:38,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:18:26" (1/3) ... [2020-10-29 08:18:38,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e5d7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:18:38, skipping insertion in model container [2020-10-29 08:18:38,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:18:27" (2/3) ... [2020-10-29 08:18:38,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e5d7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:18:38, skipping insertion in model container [2020-10-29 08:18:38,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:18:38" (3/3) ... [2020-10-29 08:18:38,219 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label30.c [2020-10-29 08:18:38,234 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:18:38,242 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:18:38,261 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:18:38,305 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:18:38,306 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:18:38,306 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:18:38,306 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:18:38,306 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:18:38,307 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:18:38,307 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:18:38,307 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:18:38,348 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:18:38,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 08:18:38,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:18:38,360 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] [2020-10-29 08:18:38,361 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:18:38,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:18:38,371 INFO L82 PathProgramCache]: Analyzing trace with hash -1494583637, now seen corresponding path program 1 times [2020-10-29 08:18:38,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:18:38,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145989486] [2020-10-29 08:18:38,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:18:38,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:38,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:39,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:39,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 08:18:39,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:39,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 758 [2020-10-29 08:18:39,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:39,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:18:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:18:39,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 08:18:39,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 08:18:39,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:18:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:39,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:39,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:39,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:18:39,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:39,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 08:18:39,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:39,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:18:39,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:39,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:18:39,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:18:39,697 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 08:18:39,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145989486] [2020-10-29 08:18:39,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:18:39,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:18:39,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77333207] [2020-10-29 08:18:39,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:18:39,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:18:39,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:18:39,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:18:39,738 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:18:55,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:18:55,440 INFO L93 Difference]: Finished difference Result 1694 states and 3089 transitions. [2020-10-29 08:18:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:18:55,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-29 08:18:55,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:18:55,488 INFO L225 Difference]: With dead ends: 1694 [2020-10-29 08:18:55,488 INFO L226 Difference]: Without dead ends: 1010 [2020-10-29 08:18:55,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:18:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-29 08:18:55,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 998. [2020-10-29 08:18:55,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 998 states. [2020-10-29 08:18:55,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1492 transitions. [2020-10-29 08:18:55,693 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1492 transitions. Word has length 31 [2020-10-29 08:18:55,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:18:55,694 INFO L481 AbstractCegarLoop]: Abstraction has 998 states and 1492 transitions. [2020-10-29 08:18:55,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:18:55,694 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1492 transitions. [2020-10-29 08:18:55,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 08:18:55,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:18:55,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:55,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:18:55,701 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:18:55,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:18:55,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1963236129, now seen corresponding path program 1 times [2020-10-29 08:18:55,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:18:55,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835645043] [2020-10-29 08:18:55,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:18:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:55,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:56,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:56,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 08:18:56,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 454 [2020-10-29 08:18:56,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:56,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:56,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:18:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-29 08:18:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 08:18:56,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:18:56,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:18:56,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:56,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:56,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:18:56,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:56,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 08:18:56,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:56,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:18:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:56,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:18:56,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:18:56,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:18:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:56,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:56,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:56,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:18:56,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:56,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 08:18:56,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:56,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:18:56,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:56,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 08:18:56,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:18:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:18:56,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835645043] [2020-10-29 08:18:56,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:18:56,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:18:56,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574218234] [2020-10-29 08:18:56,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:18:56,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:18:56,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:18:56,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:18:56,658 INFO L87 Difference]: Start difference. First operand 998 states and 1492 transitions. Second operand 5 states. [2020-10-29 08:19:15,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:19:15,878 INFO L93 Difference]: Finished difference Result 2900 states and 4368 transitions. [2020-10-29 08:19:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:19:15,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 105 [2020-10-29 08:19:15,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:19:15,895 INFO L225 Difference]: With dead ends: 2900 [2020-10-29 08:19:15,896 INFO L226 Difference]: Without dead ends: 1908 [2020-10-29 08:19:15,900 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 08:19:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2020-10-29 08:19:15,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1895. [2020-10-29 08:19:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2020-10-29 08:19:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2575 transitions. [2020-10-29 08:19:15,988 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2575 transitions. Word has length 105 [2020-10-29 08:19:15,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:19:15,991 INFO L481 AbstractCegarLoop]: Abstraction has 1895 states and 2575 transitions. [2020-10-29 08:19:15,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:19:15,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2575 transitions. [2020-10-29 08:19:16,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 08:19:16,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:19:16,006 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:19:16,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:19:16,006 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:19:16,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:19:16,007 INFO L82 PathProgramCache]: Analyzing trace with hash -1809917518, now seen corresponding path program 1 times [2020-10-29 08:19:16,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:19:16,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180503722] [2020-10-29 08:19:16,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:19:16,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:16,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:16,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:16,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:17,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:18,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:18,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:18,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 08:19:18,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:19:18,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2302 [2020-10-29 08:19:18,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:18,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:19:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:19:18,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-29 08:19:18,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:19:18,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:19:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:18,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:18,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:18,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:19:18,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:18,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 08:19:18,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:18,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:19:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:19:18,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:18,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:19:18,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:18,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:18,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:18,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:19,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:19,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 08:19:19,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:19:19,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-29 08:19:19,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:19,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:19:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:19,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 08:19:19,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:19:19,316 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:19:19,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180503722] [2020-10-29 08:19:19,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:19:19,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 08:19:19,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970229156] [2020-10-29 08:19:19,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:19:19,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:19:19,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:19:19,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:19:19,325 INFO L87 Difference]: Start difference. First operand 1895 states and 2575 transitions. Second operand 7 states. [2020-10-29 08:19:36,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:19:36,553 INFO L93 Difference]: Finished difference Result 4252 states and 6092 transitions. [2020-10-29 08:19:36,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 08:19:36,558 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-29 08:19:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:19:36,571 INFO L225 Difference]: With dead ends: 4252 [2020-10-29 08:19:36,572 INFO L226 Difference]: Without dead ends: 1913 [2020-10-29 08:19:36,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 08:19:36,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1913 states. [2020-10-29 08:19:36,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1913 to 1893. [2020-10-29 08:19:36,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1893 states. [2020-10-29 08:19:36,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1893 states to 1893 states and 2318 transitions. [2020-10-29 08:19:36,642 INFO L78 Accepts]: Start accepts. Automaton has 1893 states and 2318 transitions. Word has length 127 [2020-10-29 08:19:36,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:19:36,643 INFO L481 AbstractCegarLoop]: Abstraction has 1893 states and 2318 transitions. [2020-10-29 08:19:36,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:19:36,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1893 states and 2318 transitions. [2020-10-29 08:19:36,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-29 08:19:36,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:19:36,647 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, 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] [2020-10-29 08:19:36,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:19:36,647 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:19:36,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:19:36,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2105297167, now seen corresponding path program 1 times [2020-10-29 08:19:36,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:19:36,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746136929] [2020-10-29 08:19:36,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:19:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:36,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:37,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:37,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:37,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 205 [2020-10-29 08:19:37,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:19:37,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1139 [2020-10-29 08:19:37,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:37,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:37,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:19:37,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:19:37,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:19:37,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:19:38,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:19:38,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:38,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:38,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:38,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:19:38,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:38,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 08:19:38,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:38,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:19:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:38,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:19:38,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:19:38,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:19:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:38,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:38,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:38,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:19:38,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:38,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 08:19:38,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:38,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:38,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:19:38,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:38,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:19:38,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:19:38,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:19:38,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:38,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:38,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 08:19:38,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:38,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 08:19:38,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:38,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:19:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:19:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:38,847 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:19:38,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746136929] [2020-10-29 08:19:38,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:19:38,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:19:38,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743762084] [2020-10-29 08:19:38,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:19:38,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:19:38,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:19:38,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:19:38,852 INFO L87 Difference]: Start difference. First operand 1893 states and 2318 transitions. Second operand 8 states. [2020-10-29 08:19:53,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:19:53,611 INFO L93 Difference]: Finished difference Result 4265 states and 5520 transitions. [2020-10-29 08:19:53,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 08:19:53,617 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2020-10-29 08:19:53,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:19:53,632 INFO L225 Difference]: With dead ends: 4265 [2020-10-29 08:19:53,633 INFO L226 Difference]: Without dead ends: 2811 [2020-10-29 08:19:53,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 08:19:53,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2811 states. [2020-10-29 08:19:53,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2811 to 2795. [2020-10-29 08:19:53,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2795 states. [2020-10-29 08:19:53,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2795 states to 2795 states and 3422 transitions. [2020-10-29 08:19:53,730 INFO L78 Accepts]: Start accepts. Automaton has 2795 states and 3422 transitions. Word has length 191 [2020-10-29 08:19:53,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:19:53,732 INFO L481 AbstractCegarLoop]: Abstraction has 2795 states and 3422 transitions. [2020-10-29 08:19:53,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:19:53,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2795 states and 3422 transitions. [2020-10-29 08:19:53,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-29 08:19:53,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:19:53,740 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, 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] [2020-10-29 08:19:53,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:19:53,740 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:19:53,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:19:53,741 INFO L82 PathProgramCache]: Analyzing trace with hash 443586803, now seen corresponding path program 1 times [2020-10-29 08:19:53,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:19:53,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35506926] [2020-10-29 08:19:53,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:19:53,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:53,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:53,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:55,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:56,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:58,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:58,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-29 08:19:58,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:19:58,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4750 [2020-10-29 08:19:58,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:58,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:19:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:19:58,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:19:58,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:58,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:19:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:58,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:58,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:58,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:19:58,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:58,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 08:19:58,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:58,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:19:58,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:58,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:19:58,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:19:58,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:19:58,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:59,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:59,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:19:59,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:59,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-29 08:19:59,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:59,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:59,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:19:59,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:59,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:19:59,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 08:19:59,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:19:59,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:59,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:59,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:59,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:19:59,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:59,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 08:19:59,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:59,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:59,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:19:59,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:59,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:19:59,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 50 proven. 70 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:19:59,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35506926] [2020-10-29 08:19:59,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:19:59,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:19:59,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453007898] [2020-10-29 08:19:59,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:19:59,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:19:59,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:19:59,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:19:59,742 INFO L87 Difference]: Start difference. First operand 2795 states and 3422 transitions. Second operand 10 states. [2020-10-29 08:20:00,875 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 08:20:31,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:20:31,443 INFO L93 Difference]: Finished difference Result 7998 states and 10234 transitions. [2020-10-29 08:20:31,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 08:20:31,446 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 193 [2020-10-29 08:20:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:20:31,481 INFO L225 Difference]: With dead ends: 7998 [2020-10-29 08:20:31,481 INFO L226 Difference]: Without dead ends: 5642 [2020-10-29 08:20:31,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2020-10-29 08:20:31,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5642 states. [2020-10-29 08:20:31,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5642 to 5141. [2020-10-29 08:20:31,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5141 states. [2020-10-29 08:20:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5141 states to 5141 states and 6460 transitions. [2020-10-29 08:20:31,690 INFO L78 Accepts]: Start accepts. Automaton has 5141 states and 6460 transitions. Word has length 193 [2020-10-29 08:20:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:20:31,691 INFO L481 AbstractCegarLoop]: Abstraction has 5141 states and 6460 transitions. [2020-10-29 08:20:31,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:20:31,691 INFO L276 IsEmpty]: Start isEmpty. Operand 5141 states and 6460 transitions. [2020-10-29 08:20:31,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-29 08:20:31,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:20:31,694 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, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:20:31,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:20:31,695 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:20:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:20:31,695 INFO L82 PathProgramCache]: Analyzing trace with hash -659336259, now seen corresponding path program 1 times [2020-10-29 08:20:31,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:20:31,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530770832] [2020-10-29 08:20:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:20:31,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:31,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:32,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:36,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:36,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-29 08:20:36,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:20:36,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 08:20:36,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:36,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:20:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:20:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:20:36,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:36,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:20:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:36,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:36,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:36,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:20:36,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:36,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:20:36,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:36,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:20:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:36,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:20:36,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:36,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:20:37,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:37,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:37,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:37,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:20:37,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:37,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 08:20:37,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:37,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:37,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:37,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:37,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:20:37,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:37,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:20:37,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:37,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:37,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:37,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:20:37,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:20:37,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-29 08:20:37,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:37,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:20:37,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:37,541 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:20:37,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530770832] [2020-10-29 08:20:37,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:20:37,543 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:20:37,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221817618] [2020-10-29 08:20:37,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:20:37,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:20:37,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:20:37,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:20:37,549 INFO L87 Difference]: Start difference. First operand 5141 states and 6460 transitions. Second operand 5 states. [2020-10-29 08:20:50,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:20:50,245 INFO L93 Difference]: Finished difference Result 11153 states and 14343 transitions. [2020-10-29 08:20:50,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:20:50,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 204 [2020-10-29 08:20:50,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:20:50,277 INFO L225 Difference]: With dead ends: 11153 [2020-10-29 08:20:50,277 INFO L226 Difference]: Without dead ends: 6018 [2020-10-29 08:20:50,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 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 08:20:50,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6018 states. [2020-10-29 08:20:50,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6018 to 6007. [2020-10-29 08:20:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6007 states. [2020-10-29 08:20:50,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6007 states to 6007 states and 7662 transitions. [2020-10-29 08:20:50,448 INFO L78 Accepts]: Start accepts. Automaton has 6007 states and 7662 transitions. Word has length 204 [2020-10-29 08:20:50,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:20:50,449 INFO L481 AbstractCegarLoop]: Abstraction has 6007 states and 7662 transitions. [2020-10-29 08:20:50,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:20:50,449 INFO L276 IsEmpty]: Start isEmpty. Operand 6007 states and 7662 transitions. [2020-10-29 08:20:50,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-29 08:20:50,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:20:50,454 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:20:50,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:20:50,455 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:20:50,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:20:50,455 INFO L82 PathProgramCache]: Analyzing trace with hash 2015868599, now seen corresponding path program 1 times [2020-10-29 08:20:50,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:20:50,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437516311] [2020-10-29 08:20:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:20:50,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:50,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:50,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:52,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:55,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:55,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:55,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-29 08:20:55,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:20:55,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 08:20:55,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:55,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:20:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:20:55,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 08:20:55,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:55,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:20:55,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:55,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:55,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:55,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:20:55,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:55,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:20:55,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:55,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:20:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:20:55,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:20:55,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:20:55,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:20:55,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:55,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:56,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:56,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:20:56,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:56,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-29 08:20:56,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:56,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:20:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:20:56,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:20:56,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:20:56,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:20:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:56,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:56,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:56,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 08:20:56,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:56,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 08:20:56,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:56,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:20:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:20:56,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 08:20:56,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:56,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-29 08:20:56,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:20:56,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:20:56,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:20:56,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:20:56,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:20:56,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 08:20:56,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:20:56,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:20:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:20:56,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-29 08:20:56,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:20:56,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:20:56,624 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 148 proven. 142 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 08:20:56,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437516311] [2020-10-29 08:20:56,624 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:20:56,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 08:20:56,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515778335] [2020-10-29 08:20:56,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:20:56,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:20:56,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:20:56,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:20:56,627 INFO L87 Difference]: Start difference. First operand 6007 states and 7662 transitions. Second operand 10 states. [2020-10-29 08:21:03,466 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 08:21:29,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:21:29,400 INFO L93 Difference]: Finished difference Result 21321 states and 29206 transitions. [2020-10-29 08:21:29,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 08:21:29,403 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 271 [2020-10-29 08:21:29,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:21:29,569 INFO L225 Difference]: With dead ends: 21321 [2020-10-29 08:21:29,569 INFO L226 Difference]: Without dead ends: 14402 [2020-10-29 08:21:29,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2020-10-29 08:21:29,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14402 states. [2020-10-29 08:21:30,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14402 to 14252. [2020-10-29 08:21:30,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14252 states. [2020-10-29 08:21:30,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14252 states to 14252 states and 18325 transitions. [2020-10-29 08:21:30,068 INFO L78 Accepts]: Start accepts. Automaton has 14252 states and 18325 transitions. Word has length 271 [2020-10-29 08:21:30,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:21:30,068 INFO L481 AbstractCegarLoop]: Abstraction has 14252 states and 18325 transitions. [2020-10-29 08:21:30,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:21:30,069 INFO L276 IsEmpty]: Start isEmpty. Operand 14252 states and 18325 transitions. [2020-10-29 08:21:30,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-29 08:21:30,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:21:30,076 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, 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] [2020-10-29 08:21:30,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:21:30,077 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:21:30,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:21:30,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1914563872, now seen corresponding path program 1 times [2020-10-29 08:21:30,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:21:30,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989916332] [2020-10-29 08:21:30,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:21:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:30,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:30,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:32,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:32,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:35,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:35,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-29 08:21:35,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:21:35,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-29 08:21:35,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:35,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:21:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:21:35,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 258 [2020-10-29 08:21:35,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:35,401 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:21:35,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:21:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:35,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:35,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:35,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:21:35,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:35,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:21:35,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:35,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:21:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:21:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:21:35,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:35,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:21:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:35,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:35,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:35,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:21:35,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:35,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 08:21:35,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:35,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:35,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:21:35,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:21:35,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:21:35,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:35,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:21:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:35,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:36,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:36,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:21:36,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:36,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 08:21:36,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:36,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:21:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:21:36,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:21:36,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:36,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:21:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:21:36,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:21:36,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:21:36,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:21:36,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:21:36,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-29 08:21:36,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:21:36,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:21:36,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:21:36,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:21:36,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:21:36,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:21:36,574 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 218 proven. 12 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:21:36,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989916332] [2020-10-29 08:21:36,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:21:36,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:21:36,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526606266] [2020-10-29 08:21:36,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:21:36,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:21:36,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:21:36,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:21:36,577 INFO L87 Difference]: Start difference. First operand 14252 states and 18325 transitions. Second operand 10 states. [2020-10-29 08:21:36,899 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:21:44,079 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-29 08:21:45,305 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:22:09,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:22:09,742 INFO L93 Difference]: Finished difference Result 36941 states and 47588 transitions. [2020-10-29 08:22:09,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 08:22:09,745 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 279 [2020-10-29 08:22:09,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:22:09,853 INFO L225 Difference]: With dead ends: 36941 [2020-10-29 08:22:09,853 INFO L226 Difference]: Without dead ends: 21814 [2020-10-29 08:22:09,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-29 08:22:09,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21814 states. [2020-10-29 08:22:10,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21814 to 21735. [2020-10-29 08:22:10,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21735 states. [2020-10-29 08:22:10,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21735 states to 21735 states and 26673 transitions. [2020-10-29 08:22:10,746 INFO L78 Accepts]: Start accepts. Automaton has 21735 states and 26673 transitions. Word has length 279 [2020-10-29 08:22:10,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:22:10,747 INFO L481 AbstractCegarLoop]: Abstraction has 21735 states and 26673 transitions. [2020-10-29 08:22:10,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:22:10,747 INFO L276 IsEmpty]: Start isEmpty. Operand 21735 states and 26673 transitions. [2020-10-29 08:22:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-29 08:22:10,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:22:10,755 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:10,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:22:10,755 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:22:10,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:22:10,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1323933087, now seen corresponding path program 1 times [2020-10-29 08:22:10,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:22:10,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386934607] [2020-10-29 08:22:10,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:22:10,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:22:10,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:11,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:22:11,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking...