/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:32:21,532 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:32:21,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:32:21,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:32:21,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:32:21,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:32:21,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:32:21,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:32:21,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:32:21,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:32:21,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:32:21,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:32:21,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:32:21,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:32:21,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:32:21,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:32:21,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:32:21,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:32:21,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:32:21,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:32:21,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:32:21,637 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:32:21,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:32:21,657 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:32:21,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:32:21,674 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:32:21,675 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:32:21,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:32:21,679 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:32:21,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:32:21,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:32:21,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:32:21,685 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:32:21,686 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:32:21,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:32:21,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:32:21,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:32:21,689 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:32:21,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:32:21,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:32:21,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:32:21,694 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:32:21,764 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:32:21,765 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:32:21,770 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:32:21,770 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:32:21,771 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:32:21,771 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:32:21,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:32:21,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:32:21,772 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:32:21,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:32:21,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:32:21,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:32:21,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:32:21,775 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:32:21,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:32:21,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:32:21,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:32:21,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:32:21,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:32:21,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:32:21,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:32:21,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:32:21,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:32:21,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:32:21,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:32:21,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:32:21,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:32:21,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:32:21,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:32:21,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:32:22,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:32:22,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:32:22,253 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:32:22,254 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:32:22,256 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:32:22,257 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label16.c [2020-10-28 12:32:22,359 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76b8945c2/8139af21298447d0b066e3742ce75f87/FLAG8bf1d2569 [2020-10-28 12:32:23,362 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:32:23,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label16.c [2020-10-28 12:32:23,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76b8945c2/8139af21298447d0b066e3742ce75f87/FLAG8bf1d2569 [2020-10-28 12:32:23,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76b8945c2/8139af21298447d0b066e3742ce75f87 [2020-10-28 12:32:23,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:32:23,794 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:32:23,796 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:32:23,796 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:32:23,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:32:23,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:32:23" (1/1) ... [2020-10-28 12:32:23,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c058000 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:32:23, skipping insertion in model container [2020-10-28 12:32:23,809 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:32:23" (1/1) ... [2020-10-28 12:32:23,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:32:24,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:32:25,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:32:25,734 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:32:26,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:32:26,548 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:32:26,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:32:26 WrapperNode [2020-10-28 12:32:26,549 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:32:26,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:32:26,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:32:26,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:32:26,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:32:26" (1/1) ... [2020-10-28 12:32:26,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:32:26" (1/1) ... [2020-10-28 12:32:26,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:32:26" (1/1) ... [2020-10-28 12:32:26,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:32:26" (1/1) ... [2020-10-28 12:32:26,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:32:26" (1/1) ... [2020-10-28 12:32:26,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:32:26" (1/1) ... [2020-10-28 12:32:26,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:32:26" (1/1) ... [2020-10-28 12:32:27,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:32:27,045 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:32:27,045 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:32:27,045 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:32:27,046 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:32:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:32:27,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:32:27,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:32:27,145 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:32:27,145 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:32:27,145 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:32:27,145 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:32:27,145 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:32:27,146 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:32:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:32:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:32:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:32:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:32:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:32:27,146 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:32:27,147 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:32:27,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:32:27,147 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:32:27,147 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:32:27,147 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:32:27,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:32:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:32:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:32:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:32:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:32:27,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:32:37,618 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:32:37,619 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:32:37,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:32:37 BoogieIcfgContainer [2020-10-28 12:32:37,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:32:37,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:32:37,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:32:37,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:32:37,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:32:23" (1/3) ... [2020-10-28 12:32:37,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16886445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:32:37, skipping insertion in model container [2020-10-28 12:32:37,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:32:26" (2/3) ... [2020-10-28 12:32:37,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16886445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:32:37, skipping insertion in model container [2020-10-28 12:32:37,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:32:37" (3/3) ... [2020-10-28 12:32:37,644 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label16.c [2020-10-28 12:32:37,658 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:32:37,665 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:32:37,680 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:32:37,726 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:32:37,726 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:32:37,726 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:32:37,726 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:32:37,726 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:32:37,727 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:32:37,727 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:32:37,727 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:32:37,781 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:32:37,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-28 12:32:37,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:32:37,791 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] [2020-10-28 12:32:37,791 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:32:37,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:32:37,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1797343030, now seen corresponding path program 1 times [2020-10-28 12:32:37,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:32:37,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824295006] [2020-10-28 12:32:37,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:32:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:38,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:38,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:38,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 12:32:38,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:38,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-28 12:32:38,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:38,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:32:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:32:38,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 12:32:38,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:32:38,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:32:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:38,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:38,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:38,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:32:38,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:38,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:32:38,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:38,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:38,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:32:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:38,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:32:38,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:32:38,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:32:38,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824295006] [2020-10-28 12:32:38,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:32:38,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:32:38,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687878782] [2020-10-28 12:32:38,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:32:38,855 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:32:38,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:32:38,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:32:38,885 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:32:54,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:32:54,455 INFO L93 Difference]: Finished difference Result 3123 states and 5754 transitions. [2020-10-28 12:32:54,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:32:54,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-10-28 12:32:54,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:32:54,498 INFO L225 Difference]: With dead ends: 3123 [2020-10-28 12:32:54,498 INFO L226 Difference]: Without dead ends: 1936 [2020-10-28 12:32:54,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:32:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1936 states. [2020-10-28 12:32:54,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1936 to 1918. [2020-10-28 12:32:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1918 states. [2020-10-28 12:32:54,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1918 states to 1918 states and 2936 transitions. [2020-10-28 12:32:54,710 INFO L78 Accepts]: Start accepts. Automaton has 1918 states and 2936 transitions. Word has length 29 [2020-10-28 12:32:54,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:32:54,711 INFO L481 AbstractCegarLoop]: Abstraction has 1918 states and 2936 transitions. [2020-10-28 12:32:54,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:32:54,711 INFO L276 IsEmpty]: Start isEmpty. Operand 1918 states and 2936 transitions. [2020-10-28 12:32:54,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-28 12:32:54,717 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:32:54,717 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:32:54,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:32:54,718 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:32:54,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:32:54,719 INFO L82 PathProgramCache]: Analyzing trace with hash -390492016, now seen corresponding path program 1 times [2020-10-28 12:32:54,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:32:54,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087434737] [2020-10-28 12:32:54,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:32:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:54,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:55,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:55,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:57,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:57,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:32:57,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:32:57,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2216 [2020-10-28 12:32:57,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:57,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:57,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:32:57,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:32:57,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 12:32:57,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-28 12:32:57,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:32:57,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:57,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:57,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:57,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:32:57,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:32:57,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:57,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:32:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:32:57,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:32:57,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 12:32:57,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:32:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:32:57,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:32:57,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:32:57,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 12:32:57,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:32:57,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-28 12:32:57,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:32:57,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:32:57,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:32:57,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:32:57,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:32:57,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:32:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:32:57,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087434737] [2020-10-28 12:32:57,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:32:57,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:32:57,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715157834] [2020-10-28 12:32:57,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:32:57,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:32:57,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:32:57,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:32:57,600 INFO L87 Difference]: Start difference. First operand 1918 states and 2936 transitions. Second operand 7 states. [2020-10-28 12:33:17,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:33:17,437 INFO L93 Difference]: Finished difference Result 5717 states and 8808 transitions. [2020-10-28 12:33:17,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:33:17,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 105 [2020-10-28 12:33:17,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:33:17,471 INFO L225 Difference]: With dead ends: 5717 [2020-10-28 12:33:17,471 INFO L226 Difference]: Without dead ends: 3805 [2020-10-28 12:33:17,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:33:17,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3805 states. [2020-10-28 12:33:17,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3805 to 3731. [2020-10-28 12:33:17,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3731 states. [2020-10-28 12:33:17,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 5301 transitions. [2020-10-28 12:33:17,615 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 5301 transitions. Word has length 105 [2020-10-28 12:33:17,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:33:17,616 INFO L481 AbstractCegarLoop]: Abstraction has 3731 states and 5301 transitions. [2020-10-28 12:33:17,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:33:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 5301 transitions. [2020-10-28 12:33:17,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 12:33:17,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:33:17,621 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:33:17,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:33:17,622 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:33:17,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:33:17,622 INFO L82 PathProgramCache]: Analyzing trace with hash -2023380617, now seen corresponding path program 1 times [2020-10-28 12:33:17,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:33:17,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672842619] [2020-10-28 12:33:17,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:33:17,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:17,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:18,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:20,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:20,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 12:33:20,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:33:20,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2350 [2020-10-28 12:33:20,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:20,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:20,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:33:20,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:33:20,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:33:20,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:33:20,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:33:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:20,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:20,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:20,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:33:20,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:20,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 12:33:20,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:20,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:20,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:33:20,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:20,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:33:20,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:20,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:33:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:20,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:20,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:33:20,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-28 12:33:20,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:20,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:20,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:33:20,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:33:20,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 12:33:20,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:20,685 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:33:20,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672842619] [2020-10-28 12:33:20,688 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:33:20,688 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:33:20,688 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708777837] [2020-10-28 12:33:20,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:33:20,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:33:20,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:33:20,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:33:20,694 INFO L87 Difference]: Start difference. First operand 3731 states and 5301 transitions. Second operand 7 states. [2020-10-28 12:33:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:33:51,743 INFO L93 Difference]: Finished difference Result 11174 states and 16282 transitions. [2020-10-28 12:33:51,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:33:51,745 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-28 12:33:51,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:33:51,795 INFO L225 Difference]: With dead ends: 11174 [2020-10-28 12:33:51,795 INFO L226 Difference]: Without dead ends: 7449 [2020-10-28 12:33:51,809 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:33:51,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7449 states. [2020-10-28 12:33:52,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7449 to 7305. [2020-10-28 12:33:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7305 states. [2020-10-28 12:33:52,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7305 states to 7305 states and 10218 transitions. [2020-10-28 12:33:52,107 INFO L78 Accepts]: Start accepts. Automaton has 7305 states and 10218 transitions. Word has length 147 [2020-10-28 12:33:52,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:33:52,108 INFO L481 AbstractCegarLoop]: Abstraction has 7305 states and 10218 transitions. [2020-10-28 12:33:52,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:33:52,109 INFO L276 IsEmpty]: Start isEmpty. Operand 7305 states and 10218 transitions. [2020-10-28 12:33:52,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-28 12:33:52,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:33:52,123 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:33:52,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:33:52,126 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:33:52,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:33:52,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1036328929, now seen corresponding path program 1 times [2020-10-28 12:33:52,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:33:52,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277636112] [2020-10-28 12:33:52,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:33:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:52,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:53,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:56,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:56,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:56,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-28 12:33:56,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:33:56,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4750 [2020-10-28 12:33:56,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:56,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:33:56,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-28 12:33:56,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 12:33:56,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:57,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:33:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:57,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:57,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:33:57,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:57,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:33:57,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:57,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:33:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:33:57,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:33:57,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:33:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:57,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:57,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:57,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:33:57,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:33:57,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 12:33:57,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:57,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:57,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:33:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:33:57,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 12:33:57,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:57,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 12:33:57,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:33:57,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:57,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:33:57,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:33:57,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:33:57,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:33:57,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-28 12:33:57,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:33:57,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:33:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:33:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:33:57,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:33:57,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:33:57,705 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 91 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:33:57,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277636112] [2020-10-28 12:33:57,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:33:57,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:33:57,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129535310] [2020-10-28 12:33:57,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:33:57,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:33:57,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:33:57,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:33:57,709 INFO L87 Difference]: Start difference. First operand 7305 states and 10218 transitions. Second operand 8 states. [2020-10-28 12:34:35,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:34:35,748 INFO L93 Difference]: Finished difference Result 28259 states and 42933 transitions. [2020-10-28 12:34:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:34:35,750 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 194 [2020-10-28 12:34:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:34:35,879 INFO L225 Difference]: With dead ends: 28259 [2020-10-28 12:34:35,880 INFO L226 Difference]: Without dead ends: 20960 [2020-10-28 12:34:35,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:34:35,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20960 states. [2020-10-28 12:34:36,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20960 to 20834. [2020-10-28 12:34:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20834 states. [2020-10-28 12:34:36,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20834 states to 20834 states and 28570 transitions. [2020-10-28 12:34:36,634 INFO L78 Accepts]: Start accepts. Automaton has 20834 states and 28570 transitions. Word has length 194 [2020-10-28 12:34:36,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:34:36,636 INFO L481 AbstractCegarLoop]: Abstraction has 20834 states and 28570 transitions. [2020-10-28 12:34:36,636 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:34:36,636 INFO L276 IsEmpty]: Start isEmpty. Operand 20834 states and 28570 transitions. [2020-10-28 12:34:36,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-28 12:34:36,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:34:36,642 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:34:36,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:34:36,642 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:34:36,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:34:36,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1073789222, now seen corresponding path program 1 times [2020-10-28 12:34:36,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:34:36,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [753656593] [2020-10-28 12:34:36,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:34:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:36,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:36,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:37,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:38,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:41,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:41,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-28 12:34:41,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:34:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4368 [2020-10-28 12:34:41,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:41,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:34:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:34:41,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 12:34:41,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:41,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:34:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:41,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:41,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:41,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:34:41,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:34:41,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:41,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:34:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:34:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:34:41,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:34:41,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:34:41,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:41,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:41,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:41,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:34:41,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 12:34:41,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:41,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:34:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:34:41,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:34:41,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:34:41,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:34:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:34:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:34:41,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:34:41,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:34:41,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:34:41,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 12:34:41,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:34:41,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:34:41,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:34:41,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 12:34:41,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:34:41,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 17 [2020-10-28 12:34:41,858 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 42 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:34:41,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [753656593] [2020-10-28 12:34:41,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:34:41,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:34:41,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085936323] [2020-10-28 12:34:41,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:34:41,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:34:41,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:34:41,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:34:41,861 INFO L87 Difference]: Start difference. First operand 20834 states and 28570 transitions. Second operand 7 states. [2020-10-28 12:35:05,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:35:05,501 INFO L93 Difference]: Finished difference Result 43095 states and 61376 transitions. [2020-10-28 12:35:05,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:35:05,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 197 [2020-10-28 12:35:05,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:35:05,648 INFO L225 Difference]: With dead ends: 43095 [2020-10-28 12:35:05,648 INFO L226 Difference]: Without dead ends: 22271 [2020-10-28 12:35:05,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:35:05,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22271 states. [2020-10-28 12:35:06,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22271 to 21957. [2020-10-28 12:35:06,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21957 states. [2020-10-28 12:35:06,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21957 states to 21957 states and 30555 transitions. [2020-10-28 12:35:06,820 INFO L78 Accepts]: Start accepts. Automaton has 21957 states and 30555 transitions. Word has length 197 [2020-10-28 12:35:06,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:35:06,821 INFO L481 AbstractCegarLoop]: Abstraction has 21957 states and 30555 transitions. [2020-10-28 12:35:06,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:35:06,822 INFO L276 IsEmpty]: Start isEmpty. Operand 21957 states and 30555 transitions. [2020-10-28 12:35:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-28 12:35:06,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:35:06,826 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:35:06,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:35:06,827 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:35:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:35:06,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1992281581, now seen corresponding path program 1 times [2020-10-28 12:35:06,828 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:35:06,828 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122760336] [2020-10-28 12:35:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:35:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:06,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:07,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:07,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:09,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:09,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-28 12:35:09,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:35:09,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2960 [2020-10-28 12:35:09,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:09,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:35:09,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 12:35:09,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:35:09,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:10,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:35:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:10,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:10,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:10,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:35:10,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:10,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:35:10,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:10,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:10,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:35:10,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:35:10,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:35:10,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:35:10,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:35:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:10,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:10,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:10,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 12:35:10,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:10,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 12:35:10,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:10,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:35:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:35:10,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:35:10,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:10,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 12:35:10,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:10,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:10,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:10,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:35:10,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:10,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 12:35:10,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:10,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:35:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:35:10,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:35:10,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:10,665 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 114 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:35:10,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122760336] [2020-10-28 12:35:10,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:35:10,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:35:10,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588765316] [2020-10-28 12:35:10,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:35:10,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:35:10,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:35:10,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:35:10,670 INFO L87 Difference]: Start difference. First operand 21957 states and 30555 transitions. Second operand 7 states. [2020-10-28 12:35:44,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:35:44,984 INFO L93 Difference]: Finished difference Result 61005 states and 92208 transitions. [2020-10-28 12:35:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:35:44,987 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-28 12:35:44,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:35:45,192 INFO L225 Difference]: With dead ends: 61005 [2020-10-28 12:35:45,192 INFO L226 Difference]: Without dead ends: 39857 [2020-10-28 12:35:45,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:35:45,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39857 states. [2020-10-28 12:35:46,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39857 to 39500. [2020-10-28 12:35:46,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39500 states. [2020-10-28 12:35:46,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39500 states to 39500 states and 53720 transitions. [2020-10-28 12:35:46,536 INFO L78 Accepts]: Start accepts. Automaton has 39500 states and 53720 transitions. Word has length 204 [2020-10-28 12:35:46,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:35:46,537 INFO L481 AbstractCegarLoop]: Abstraction has 39500 states and 53720 transitions. [2020-10-28 12:35:46,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:35:46,537 INFO L276 IsEmpty]: Start isEmpty. Operand 39500 states and 53720 transitions. [2020-10-28 12:35:46,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-28 12:35:46,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:35:46,543 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:35:46,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:35:46,544 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:35:46,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:35:46,544 INFO L82 PathProgramCache]: Analyzing trace with hash 703468155, now seen corresponding path program 1 times [2020-10-28 12:35:46,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:35:46,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107222711] [2020-10-28 12:35:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:35:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:46,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:47,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:47,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:48,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:49,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:49,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-28 12:35:49,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:35:49,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2706 [2020-10-28 12:35:49,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:49,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:35:49,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:35:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:35:49,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:49,766 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:35:49,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:35:49,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:49,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:49,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:49,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:35:49,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:35:49,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:49,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:35:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:35:49,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:35:49,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:35:49,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:35:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:49,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:49,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:49,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:35:49,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:49,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-28 12:35:49,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:49,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:35:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:35:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:35:49,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:50,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:35:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:35:50,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:35:50,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:35:50,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:35:50,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:35:50,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 12:35:50,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:35:50,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:35:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:35:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:35:50,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:35:50,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:35:50,577 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:35:50,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107222711] [2020-10-28 12:35:50,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:35:50,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:35:50,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468490994] [2020-10-28 12:35:50,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:35:50,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:35:50,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:35:50,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:35:50,581 INFO L87 Difference]: Start difference. First operand 39500 states and 53720 transitions. Second operand 7 states.