/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=0.4 --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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:56:51,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:56:51,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:56:51,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:56:51,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:56:51,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:56:51,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:56:51,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:56:51,617 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:56:51,618 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:56:51,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:56:51,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:56:51,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:56:51,622 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:56:51,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:56:51,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:56:51,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:56:51,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:56:51,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:56:51,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:56:51,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:56:51,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:56:51,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:56:51,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:56:51,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:56:51,641 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:56:51,641 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:56:51,642 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:56:51,643 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:56:51,644 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:56:51,644 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:56:51,645 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:56:51,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:56:51,646 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:56:51,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:56:51,648 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:56:51,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:56:51,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:56:51,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:56:51,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:56:51,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:56:51,652 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 [2020-10-14 02:56:51,706 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:56:51,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:56:51,711 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:56:51,711 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:56:51,711 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:56:51,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:56:51,712 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:56:51,712 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:56:51,715 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:56:51,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:56:51,716 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:56:51,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:56:51,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:56:51,716 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:56:51,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:56:51,717 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:56:51,717 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:56:51,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:56:51,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:56:51,717 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:56:51,718 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:56:51,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:56:51,719 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:56:51,719 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:56:51,719 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:56:51,720 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:56:51,720 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:56:51,720 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:56:51,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:56:51,720 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=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=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 02:56:52,069 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:56:52,088 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:56:52,092 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:56:52,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:56:52,096 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:56:52,097 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label00.c [2020-10-14 02:56:52,182 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76ba2e1bb/c445769aa997428399d6f927292dfd48/FLAG68dfce1a9 [2020-10-14 02:56:53,077 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:56:53,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label00.c [2020-10-14 02:56:53,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76ba2e1bb/c445769aa997428399d6f927292dfd48/FLAG68dfce1a9 [2020-10-14 02:56:53,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/76ba2e1bb/c445769aa997428399d6f927292dfd48 [2020-10-14 02:56:53,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:56:53,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:56:53,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:56:53,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:56:53,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:56:53,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:56:53" (1/1) ... [2020-10-14 02:56:53,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:53, skipping insertion in model container [2020-10-14 02:56:53,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:56:53" (1/1) ... [2020-10-14 02:56:53,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:56:53,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:56:55,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:56:55,591 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:56:56,423 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:56:56,457 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:56:56,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:56 WrapperNode [2020-10-14 02:56:56,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:56:56,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:56:56,459 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:56:56,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:56:56,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:56" (1/1) ... [2020-10-14 02:56:56,476 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:56" (1/1) ... [2020-10-14 02:56:56,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:56" (1/1) ... [2020-10-14 02:56:56,546 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:56" (1/1) ... [2020-10-14 02:56:56,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:56" (1/1) ... [2020-10-14 02:56:56,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:56" (1/1) ... [2020-10-14 02:56:56,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:56" (1/1) ... [2020-10-14 02:56:56,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:56:56,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:56:56,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:56:56,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:56:56,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:56" (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 [2020-10-14 02:56:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:56:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:56:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:56:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:56:57,017 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:56:57,018 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:56:57,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:56:57,019 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:56:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:56:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:56:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:56:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:56:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:56:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:56:57,021 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:56:57,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:56:57,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:57:11,189 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:57:11,189 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:57:11,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:57:11 BoogieIcfgContainer [2020-10-14 02:57:11,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:57:11,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:57:11,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:57:11,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:57:11,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:56:53" (1/3) ... [2020-10-14 02:57:11,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c054ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:57:11, skipping insertion in model container [2020-10-14 02:57:11,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:56:56" (2/3) ... [2020-10-14 02:57:11,213 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c054ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:57:11, skipping insertion in model container [2020-10-14 02:57:11,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:57:11" (3/3) ... [2020-10-14 02:57:11,215 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label00.c [2020-10-14 02:57:11,228 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:57:11,240 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:57:11,257 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:57:11,288 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:57:11,289 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:57:11,289 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:57:11,289 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:57:11,289 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:57:11,289 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:57:11,290 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:57:11,290 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:57:11,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 02:57:11,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 02:57:11,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:57:11,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:57:11,348 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:57:11,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:57:11,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1468067560, now seen corresponding path program 1 times [2020-10-14 02:57:11,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:57:11,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066684474] [2020-10-14 02:57:11,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:57:11,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:11,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:11,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:11,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 02:57:11,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:11,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-14 02:57:12,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:12,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:57:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:57:12,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 02:57:12,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 02:57:12,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:57:12,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:12,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:12,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:12,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:57:12,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:12,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 02:57:12,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:12,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:12,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:57:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:12,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:57:12,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:57:12,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066684474] [2020-10-14 02:57:12,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:57:12,274 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 02:57:12,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970491103] [2020-10-14 02:57:12,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:57:12,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:57:12,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:57:12,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:57:12,301 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 5 states. [2020-10-14 02:57:28,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:57:28,899 INFO L93 Difference]: Finished difference Result 4080 states and 7562 transitions. [2020-10-14 02:57:28,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:57:28,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-10-14 02:57:28,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:57:28,967 INFO L225 Difference]: With dead ends: 4080 [2020-10-14 02:57:28,967 INFO L226 Difference]: Without dead ends: 2872 [2020-10-14 02:57:28,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:57:29,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2872 states. [2020-10-14 02:57:29,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2872 to 1934. [2020-10-14 02:57:29,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1934 states. [2020-10-14 02:57:29,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3163 transitions. [2020-10-14 02:57:29,195 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3163 transitions. Word has length 43 [2020-10-14 02:57:29,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:57:29,197 INFO L479 AbstractCegarLoop]: Abstraction has 1934 states and 3163 transitions. [2020-10-14 02:57:29,197 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:57:29,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3163 transitions. [2020-10-14 02:57:29,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 02:57:29,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:57:29,207 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:57:29,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:57:29,209 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:57:29,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:57:29,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1326876525, now seen corresponding path program 1 times [2020-10-14 02:57:29,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:57:29,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907316790] [2020-10-14 02:57:29,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:57:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:29,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:29,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:29,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:31,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:31,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 02:57:31,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:57:31,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1731 [2020-10-14 02:57:31,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:31,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:57:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:57:31,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 02:57:31,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 02:57:31,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:57:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:31,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:31,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:31,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:57:31,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:31,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:57:31,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:31,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:57:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:57:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:31,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:57:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:31,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:31,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:31,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:57:31,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:31,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 02:57:31,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:31,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:57:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:31,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:57:31,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:31,325 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:57:31,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907316790] [2020-10-14 02:57:31,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:57:31,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:57:31,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799827704] [2020-10-14 02:57:31,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:57:31,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:57:31,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:57:31,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:57:31,330 INFO L87 Difference]: Start difference. First operand 1934 states and 3163 transitions. Second operand 6 states. [2020-10-14 02:57:48,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:57:48,098 INFO L93 Difference]: Finished difference Result 5524 states and 9180 transitions. [2020-10-14 02:57:48,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:57:48,105 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2020-10-14 02:57:48,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:57:48,126 INFO L225 Difference]: With dead ends: 5524 [2020-10-14 02:57:48,127 INFO L226 Difference]: Without dead ends: 3596 [2020-10-14 02:57:48,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:57:48,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3596 states. [2020-10-14 02:57:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3596 to 3577. [2020-10-14 02:57:48,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3577 states. [2020-10-14 02:57:48,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3577 states to 3577 states and 5821 transitions. [2020-10-14 02:57:48,238 INFO L78 Accepts]: Start accepts. Automaton has 3577 states and 5821 transitions. Word has length 118 [2020-10-14 02:57:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:57:48,239 INFO L479 AbstractCegarLoop]: Abstraction has 3577 states and 5821 transitions. [2020-10-14 02:57:48,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:57:48,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3577 states and 5821 transitions. [2020-10-14 02:57:48,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-14 02:57:48,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:57:48,244 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:57:48,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:57:48,244 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:57:48,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:57:48,245 INFO L82 PathProgramCache]: Analyzing trace with hash -1407079647, now seen corresponding path program 1 times [2020-10-14 02:57:48,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:57:48,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2018925833] [2020-10-14 02:57:48,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:57:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:48,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:49,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:49,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-14 02:57:49,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:57:49,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1104 [2020-10-14 02:57:49,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:49,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:49,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:57:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 02:57:49,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 02:57:49,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:49,652 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-14 02:57:49,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:57:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:49,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:49,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:49,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:57:49,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:49,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:57:49,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:49,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:49,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:57:49,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:49,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:57:49,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:49,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:57:49,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:57:49,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:57:49,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:57:49,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 02:57:49,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:57:49,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 02:57:49,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:57:49,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:57:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:57:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:57:49,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 02:57:49,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:57:49,976 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:57:49,977 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2018925833] [2020-10-14 02:57:49,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:57:49,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:57:49,978 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767658667] [2020-10-14 02:57:49,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:57:49,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:57:49,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:57:49,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:57:49,982 INFO L87 Difference]: Start difference. First operand 3577 states and 5821 transitions. Second operand 5 states. [2020-10-14 02:58:16,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:58:16,718 INFO L93 Difference]: Finished difference Result 10480 states and 17373 transitions. [2020-10-14 02:58:16,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:58:16,721 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-14 02:58:16,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:58:16,758 INFO L225 Difference]: With dead ends: 10480 [2020-10-14 02:58:16,758 INFO L226 Difference]: Without dead ends: 6909 [2020-10-14 02:58:16,773 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:58:16,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6909 states. [2020-10-14 02:58:16,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6909 to 6860. [2020-10-14 02:58:16,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6860 states. [2020-10-14 02:58:17,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6860 states to 6860 states and 10360 transitions. [2020-10-14 02:58:17,008 INFO L78 Accepts]: Start accepts. Automaton has 6860 states and 10360 transitions. Word has length 144 [2020-10-14 02:58:17,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:58:17,013 INFO L479 AbstractCegarLoop]: Abstraction has 6860 states and 10360 transitions. [2020-10-14 02:58:17,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:58:17,014 INFO L276 IsEmpty]: Start isEmpty. Operand 6860 states and 10360 transitions. [2020-10-14 02:58:17,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-14 02:58:17,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:58:17,024 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:58:17,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:58:17,025 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:58:17,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:58:17,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1819009996, now seen corresponding path program 1 times [2020-10-14 02:58:17,027 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:58:17,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1688723659] [2020-10-14 02:58:17,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:58:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:17,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:17,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:17,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-14 02:58:17,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:17,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-14 02:58:17,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:17,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:17,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:58:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:58:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 02:58:17,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:58:17,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:58:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:17,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:17,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:17,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:58:17,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:17,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 02:58:17,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:17,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:17,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:58:17,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:17,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:58:17,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:17,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:58:17,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:17,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:18,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:18,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 02:58:18,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:18,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-14 02:58:18,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:18,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:18,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:58:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:58:18,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 02:58:18,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:58:18,303 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1688723659] [2020-10-14 02:58:18,303 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:58:18,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 02:58:18,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341537275] [2020-10-14 02:58:18,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:58:18,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:58:18,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:58:18,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:58:18,309 INFO L87 Difference]: Start difference. First operand 6860 states and 10360 transitions. Second operand 7 states. [2020-10-14 02:58:39,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:58:39,575 INFO L93 Difference]: Finished difference Result 20535 states and 32352 transitions. [2020-10-14 02:58:39,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:58:39,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-10-14 02:58:39,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:58:39,641 INFO L225 Difference]: With dead ends: 20535 [2020-10-14 02:58:39,641 INFO L226 Difference]: Without dead ends: 13681 [2020-10-14 02:58:39,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:58:39,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13681 states. [2020-10-14 02:58:40,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13681 to 13584. [2020-10-14 02:58:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13584 states. [2020-10-14 02:58:40,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13584 states to 13584 states and 19192 transitions. [2020-10-14 02:58:40,098 INFO L78 Accepts]: Start accepts. Automaton has 13584 states and 19192 transitions. Word has length 162 [2020-10-14 02:58:40,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:58:40,099 INFO L479 AbstractCegarLoop]: Abstraction has 13584 states and 19192 transitions. [2020-10-14 02:58:40,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:58:40,099 INFO L276 IsEmpty]: Start isEmpty. Operand 13584 states and 19192 transitions. [2020-10-14 02:58:40,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 02:58:40,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:58:40,107 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:58:40,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:58:40,108 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:58:40,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:58:40,108 INFO L82 PathProgramCache]: Analyzing trace with hash 274418048, now seen corresponding path program 1 times [2020-10-14 02:58:40,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:58:40,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470288578] [2020-10-14 02:58:40,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:58:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:40,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:41,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:41,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 02:58:41,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:58:41,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-10-14 02:58:41,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:41,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:58:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 156 [2020-10-14 02:58:41,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 02:58:41,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:41,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:58:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:41,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:41,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:58:41,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:41,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:58:41,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:41,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:58:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:41,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:58:41,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:58:41,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:58:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:58:41,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:58:41,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:58:41,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 02:58:41,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:58:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 02:58:41,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:58:41,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:58:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:58:41,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:58:41,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 02:58:41,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 02:58:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:58:41,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470288578] [2020-10-14 02:58:41,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:58:41,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:58:41,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665624666] [2020-10-14 02:58:41,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:58:41,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:58:41,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:58:41,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:58:41,982 INFO L87 Difference]: Start difference. First operand 13584 states and 19192 transitions. Second operand 5 states. [2020-10-14 02:59:06,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:59:06,259 INFO L93 Difference]: Finished difference Result 37794 states and 54705 transitions. [2020-10-14 02:59:06,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:59:06,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-10-14 02:59:06,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:59:06,360 INFO L225 Difference]: With dead ends: 37794 [2020-10-14 02:59:06,360 INFO L226 Difference]: Without dead ends: 24216 [2020-10-14 02:59:06,407 INFO L675 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 [2020-10-14 02:59:06,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24216 states. [2020-10-14 02:59:07,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24216 to 24167. [2020-10-14 02:59:07,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24167 states. [2020-10-14 02:59:07,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24167 states to 24167 states and 31920 transitions. [2020-10-14 02:59:07,896 INFO L78 Accepts]: Start accepts. Automaton has 24167 states and 31920 transitions. Word has length 189 [2020-10-14 02:59:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:59:07,897 INFO L479 AbstractCegarLoop]: Abstraction has 24167 states and 31920 transitions. [2020-10-14 02:59:07,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:59:07,897 INFO L276 IsEmpty]: Start isEmpty. Operand 24167 states and 31920 transitions. [2020-10-14 02:59:07,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-14 02:59:07,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:59:07,906 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:59:07,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:59:07,907 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:59:07,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:59:07,908 INFO L82 PathProgramCache]: Analyzing trace with hash 432540495, now seen corresponding path program 1 times [2020-10-14 02:59:07,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:59:07,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189044287] [2020-10-14 02:59:07,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:59:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:07,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:08,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:10,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:10,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-14 02:59:10,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:59:10,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2135 [2020-10-14 02:59:10,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:10,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:10,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:59:10,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 02:59:10,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-14 02:59:10,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:10,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:59:10,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:10,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:10,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:10,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:59:10,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:59:10,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:10,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:59:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:10,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:59:10,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:10,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:59:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:10,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:10,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:10,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:59:10,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:10,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-14 02:59:10,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:10,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:10,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:59:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 02:59:10,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:10,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 02:59:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:10,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:10,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-14 02:59:10,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:10,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-14 02:59:10,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:10,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:10,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:59:10,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:59:10,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-14 02:59:10,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:10,678 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:59:10,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189044287] [2020-10-14 02:59:10,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:59:10,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:59:10,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383961708] [2020-10-14 02:59:10,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:59:10,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:59:10,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:59:10,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:59:10,681 INFO L87 Difference]: Start difference. First operand 24167 states and 31920 transitions. Second operand 7 states. [2020-10-14 02:59:47,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:59:47,571 INFO L93 Difference]: Finished difference Result 67118 states and 96571 transitions. [2020-10-14 02:59:47,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:59:47,577 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-10-14 02:59:47,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:59:47,836 INFO L225 Difference]: With dead ends: 67118 [2020-10-14 02:59:47,836 INFO L226 Difference]: Without dead ends: 42957 [2020-10-14 02:59:47,919 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:59:47,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42957 states. [2020-10-14 02:59:49,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42957 to 42084. [2020-10-14 02:59:49,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42084 states. [2020-10-14 02:59:49,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42084 states to 42084 states and 57802 transitions. [2020-10-14 02:59:49,469 INFO L78 Accepts]: Start accepts. Automaton has 42084 states and 57802 transitions. Word has length 233 [2020-10-14 02:59:49,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:59:49,470 INFO L479 AbstractCegarLoop]: Abstraction has 42084 states and 57802 transitions. [2020-10-14 02:59:49,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:59:49,470 INFO L276 IsEmpty]: Start isEmpty. Operand 42084 states and 57802 transitions. [2020-10-14 02:59:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-10-14 02:59:49,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:59:49,484 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:59:49,485 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:59:49,485 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:59:49,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:59:49,486 INFO L82 PathProgramCache]: Analyzing trace with hash 65091159, now seen corresponding path program 1 times [2020-10-14 02:59:49,486 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:59:49,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985342665] [2020-10-14 02:59:49,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:59:49,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:49,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:50,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:54,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:54,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-10-14 02:59:54,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:59:54,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4791 [2020-10-14 02:59:54,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:54,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:59:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 02:59:54,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:59:54,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:59:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:54,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:54,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:54,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:59:54,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:54,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:59:54,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:54,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:59:54,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:59:54,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:54,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:59:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:54,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:54,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 02:59:54,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:54,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 02:59:54,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:54,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:59:54,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:59:54,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 02:59:54,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:59:54,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 02:59:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:59:54,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:59:54,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:59:54,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:59:54,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:59:54,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-14 02:59:54,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:59:54,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:59:54,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:59:54,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:59:54,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 02:59:54,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:59:55,270 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:59:55,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985342665] [2020-10-14 02:59:55,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:59:55,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:59:55,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24533068] [2020-10-14 02:59:55,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:59:55,275 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:59:55,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:59:55,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:59:55,277 INFO L87 Difference]: Start difference. First operand 42084 states and 57802 transitions. Second operand 7 states. [2020-10-14 03:00:30,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 03:00:30,807 INFO L93 Difference]: Finished difference Result 104140 states and 153138 transitions. [2020-10-14 03:00:30,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 03:00:30,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 237 [2020-10-14 03:00:30,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 03:00:31,195 INFO L225 Difference]: With dead ends: 104140 [2020-10-14 03:00:31,195 INFO L226 Difference]: Without dead ends: 62062 [2020-10-14 03:00:31,339 INFO L675 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 [2020-10-14 03:00:31,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62062 states. [2020-10-14 03:00:33,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62062 to 60143. [2020-10-14 03:00:33,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60143 states. [2020-10-14 03:00:33,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60143 states to 60143 states and 86723 transitions. [2020-10-14 03:00:33,231 INFO L78 Accepts]: Start accepts. Automaton has 60143 states and 86723 transitions. Word has length 237 [2020-10-14 03:00:33,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 03:00:33,232 INFO L479 AbstractCegarLoop]: Abstraction has 60143 states and 86723 transitions. [2020-10-14 03:00:33,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 03:00:33,232 INFO L276 IsEmpty]: Start isEmpty. Operand 60143 states and 86723 transitions. [2020-10-14 03:00:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-10-14 03:00:33,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 03:00:33,248 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 03:00:33,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 03:00:33,248 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 03:00:33,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 03:00:33,249 INFO L82 PathProgramCache]: Analyzing trace with hash 528523361, now seen corresponding path program 1 times [2020-10-14 03:00:33,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 03:00:33,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900530972] [2020-10-14 03:00:33,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 03:00:33,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:33,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:33,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:33,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:36,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:36,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-14 03:00:36,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 03:00:36,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3480 [2020-10-14 03:00:36,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:36,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 03:00:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 220 [2020-10-14 03:00:36,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-14 03:00:36,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:36,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 03:00:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:36,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:36,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:36,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 03:00:36,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:00:36,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 03:00:36,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:36,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:00:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:00:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:00:36,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:36,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 03:00:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:36,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:36,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:36,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 03:00:36,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:00:36,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 03:00:36,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:36,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 03:00:36,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:00:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 03:00:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:36,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-14 03:00:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 03:00:37,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 03:00:37,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 03:00:37,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 03:00:37,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 03:00:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-14 03:00:37,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 03:00:37,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 03:00:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 03:00:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 03:00:37,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-14 03:00:37,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 03:00:37,297 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-14 03:00:37,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900530972] [2020-10-14 03:00:37,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 03:00:37,298 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 03:00:37,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313938596] [2020-10-14 03:00:37,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 03:00:37,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 03:00:37,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 03:00:37,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 03:00:37,301 INFO L87 Difference]: Start difference. First operand 60143 states and 86723 transitions. Second operand 5 states.