/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 SingleStatement --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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:19:18,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:19:18,616 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:19:18,643 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:19:18,643 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:19:18,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:19:18,646 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:19:18,648 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:19:18,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:19:18,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:19:18,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:19:18,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:19:18,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:19:18,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:19:18,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:19:18,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:19:18,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:19:18,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:19:18,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:19:18,661 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:19:18,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:19:18,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:19:18,665 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:19:18,666 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:19:18,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:19:18,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:19:18,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:19:18,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:19:18,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:19:18,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:19:18,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:19:18,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:19:18,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:19:18,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:19:18,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:19:18,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:19:18,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:19:18,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:19:18,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:19:18,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:19:18,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:19:18,679 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 [2020-09-24 18:19:18,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:19:18,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:19:18,707 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:19:18,707 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:19:18,707 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:19:18,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:19:18,707 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:19:18,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:19:18,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:19:18,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:19:18,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:19:18,708 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:19:18,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:19:18,709 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:19:18,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:19:18,709 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:19:18,709 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:19:18,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:19:18,710 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:19:18,710 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:19:18,710 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:19:18,710 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:19:18,711 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:19:18,711 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:19:18,711 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:19:18,711 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:19:18,712 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:19:18,712 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:19:18,712 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:19:18,712 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 -> SingleStatement 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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=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=SMALLEST;log-additional-information=true; [2020-09-24 18:19:19,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:19:19,220 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:19:19,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:19:19,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:19:19,227 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:19:19,228 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-24 18:19:19,325 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df7eab0b8/947ba8466c8a4c15b2c74b742f07e774/FLAG3c4c6a2aa [2020-09-24 18:19:20,004 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:19:20,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label06.c [2020-09-24 18:19:20,019 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df7eab0b8/947ba8466c8a4c15b2c74b742f07e774/FLAG3c4c6a2aa [2020-09-24 18:19:20,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df7eab0b8/947ba8466c8a4c15b2c74b742f07e774 [2020-09-24 18:19:20,244 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:19:20,251 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:19:20,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:20,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:19:20,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:19:20,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:20" (1/1) ... [2020-09-24 18:19:20,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@245d8fce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:20, skipping insertion in model container [2020-09-24 18:19:20,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:19:20" (1/1) ... [2020-09-24 18:19:20,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:19:20,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:19:20,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:20,858 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:19:21,094 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:19:21,133 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:19:21,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:21 WrapperNode [2020-09-24 18:19:21,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:19:21,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:19:21,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:19:21,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:19:21,160 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:21" (1/1) ... [2020-09-24 18:19:21,163 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:21" (1/1) ... [2020-09-24 18:19:21,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:21" (1/1) ... [2020-09-24 18:19:21,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:21" (1/1) ... [2020-09-24 18:19:21,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:21" (1/1) ... [2020-09-24 18:19:21,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:21" (1/1) ... [2020-09-24 18:19:21,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:21" (1/1) ... [2020-09-24 18:19:21,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:19:21,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:19:21,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:19:21,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:19:21,290 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:21" (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 [2020-09-24 18:19:21,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:19:21,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:19:21,379 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 18:19:21,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:19:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 18:19:21,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:19:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:19:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 18:19:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:19:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:19:21,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:19:22,821 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:19:22,821 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 18:19:22,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:22 BoogieIcfgContainer [2020-09-24 18:19:22,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:19:22,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:19:22,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:19:22,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:19:22,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:19:20" (1/3) ... [2020-09-24 18:19:22,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:22, skipping insertion in model container [2020-09-24 18:19:22,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:19:21" (2/3) ... [2020-09-24 18:19:22,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68751017 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:19:22, skipping insertion in model container [2020-09-24 18:19:22,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:19:22" (3/3) ... [2020-09-24 18:19:22,851 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label06.c [2020-09-24 18:19:22,864 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:19:22,879 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:19:22,904 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:19:22,949 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:19:22,950 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:19:22,950 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:19:22,950 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:19:22,951 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:19:22,951 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:19:22,951 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:19:22,951 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:19:22,993 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 18:19:23,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 18:19:23,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:23,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:23,034 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:23,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:23,041 INFO L82 PathProgramCache]: Analyzing trace with hash 730138415, now seen corresponding path program 1 times [2020-09-24 18:19:23,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:23,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866462069] [2020-09-24 18:19:23,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:23,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:24,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:26,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:27,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:27,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:28,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:28,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 18:19:28,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:28,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-24 18:19:28,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-24 18:19:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 18:19:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:19:28,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:28,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:28,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:28,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:28,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:28,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:28,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 18:19:28,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:28,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:28,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:28,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 18:19:28,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:28,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:28,656 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866462069] [2020-09-24 18:19:28,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:28,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:19:28,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051739172] [2020-09-24 18:19:28,668 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:19:28,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:28,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:19:28,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:19:28,691 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-24 18:19:30,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:30,916 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-24 18:19:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:19:30,920 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2020-09-24 18:19:30,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:30,944 INFO L225 Difference]: With dead ends: 1212 [2020-09-24 18:19:30,945 INFO L226 Difference]: Without dead ends: 638 [2020-09-24 18:19:30,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:19:30,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-24 18:19:31,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-24 18:19:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-24 18:19:31,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-24 18:19:31,064 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 152 [2020-09-24 18:19:31,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:31,066 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-24 18:19:31,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:19:31,066 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-24 18:19:31,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-24 18:19:31,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:31,079 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:31,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:19:31,080 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:31,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:31,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1669034880, now seen corresponding path program 1 times [2020-09-24 18:19:31,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:31,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448750745] [2020-09-24 18:19:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:31,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:31,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:32,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:34,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:36,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:36,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-09-24 18:19:36,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:19:36,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-24 18:19:36,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:36,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:19:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 18:19:36,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 18:19:36,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:36,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:36,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:36,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:36,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:36,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 18:19:36,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:19:36,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:36,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:36,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:36,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:36,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 18:19:36,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:36,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:36,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:19:36,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:19:36,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:36,447 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:19:36,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448750745] [2020-09-24 18:19:36,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:19:36,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:19:36,448 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993199517] [2020-09-24 18:19:36,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:19:36,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:36,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:19:36,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:19:36,452 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-24 18:19:38,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:38,695 INFO L93 Difference]: Finished difference Result 1589 states and 1978 transitions. [2020-09-24 18:19:38,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:19:38,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 173 [2020-09-24 18:19:38,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:38,707 INFO L225 Difference]: With dead ends: 1589 [2020-09-24 18:19:38,708 INFO L226 Difference]: Without dead ends: 1010 [2020-09-24 18:19:38,712 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:19:38,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-09-24 18:19:38,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 962. [2020-09-24 18:19:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2020-09-24 18:19:38,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1158 transitions. [2020-09-24 18:19:38,790 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1158 transitions. Word has length 173 [2020-09-24 18:19:38,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:38,792 INFO L479 AbstractCegarLoop]: Abstraction has 962 states and 1158 transitions. [2020-09-24 18:19:38,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:19:38,793 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1158 transitions. [2020-09-24 18:19:38,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-24 18:19:38,800 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:38,800 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:38,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:19:38,801 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:38,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:38,801 INFO L82 PathProgramCache]: Analyzing trace with hash -382985798, now seen corresponding path program 1 times [2020-09-24 18:19:38,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:38,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047880525] [2020-09-24 18:19:38,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:38,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:38,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:38,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:39,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:39,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:39,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:41,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:43,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:43,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-09-24 18:19:43,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 18:19:43,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-24 18:19:43,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:43,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 18:19:43,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:19:43,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:43,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:43,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:43,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:43,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:43,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:43,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:44,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:19:44,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:44,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:44,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:44,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:44,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:44,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:44,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:44,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 18:19:44,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:44,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:19:44,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:44,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:44,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:19:44,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:44,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 18:19:44,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:44,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:44,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:44,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:19:44,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:44,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-24 18:19:44,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:44,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:44,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:19:44,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:19:44,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 58 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:19:44,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047880525] [2020-09-24 18:19:44,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:44,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:19:44,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837776954] [2020-09-24 18:19:44,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:19:44,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:44,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:19:44,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:19:44,407 INFO L87 Difference]: Start difference. First operand 962 states and 1158 transitions. Second operand 7 states. [2020-09-24 18:19:46,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:46,853 INFO L93 Difference]: Finished difference Result 2325 states and 2902 transitions. [2020-09-24 18:19:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:19:46,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-09-24 18:19:46,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:46,875 INFO L225 Difference]: With dead ends: 2325 [2020-09-24 18:19:46,875 INFO L226 Difference]: Without dead ends: 1387 [2020-09-24 18:19:46,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:19:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2020-09-24 18:19:46,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1182. [2020-09-24 18:19:46,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2020-09-24 18:19:46,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1435 transitions. [2020-09-24 18:19:46,953 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1435 transitions. Word has length 214 [2020-09-24 18:19:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:46,955 INFO L479 AbstractCegarLoop]: Abstraction has 1182 states and 1435 transitions. [2020-09-24 18:19:46,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:19:46,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1435 transitions. [2020-09-24 18:19:46,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-24 18:19:46,964 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:46,965 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:46,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:19:46,974 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:46,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:46,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1114180569, now seen corresponding path program 1 times [2020-09-24 18:19:46,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:46,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119897815] [2020-09-24 18:19:46,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:47,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:47,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:48,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:48,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:49,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:50,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:52,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-09-24 18:19:52,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 18:19:52,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-24 18:19:52,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:52,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:52,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 18:19:52,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 18:19:52,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:52,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:19:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:52,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:52,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:19:52,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:52,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 18:19:52,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:19:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:52,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:19:52,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:19:52,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:19:52,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:52,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:52,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-24 18:19:52,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:52,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-24 18:19:52,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:52,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:19:52,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:19:52,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 18:19:52,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:52,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 18:19:52,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:52,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:52,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:52,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-24 18:19:52,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:19:52,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-24 18:19:52,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:52,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:52,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:19:52,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:19:52,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:19:52,508 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 66 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:19:52,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119897815] [2020-09-24 18:19:52,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:19:52,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:19:52,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687191579] [2020-09-24 18:19:52,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:19:52,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:19:52,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:19:52,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:19:52,513 INFO L87 Difference]: Start difference. First operand 1182 states and 1435 transitions. Second operand 7 states. [2020-09-24 18:19:54,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:19:54,806 INFO L93 Difference]: Finished difference Result 3038 states and 3829 transitions. [2020-09-24 18:19:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 18:19:54,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-09-24 18:19:54,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:19:54,818 INFO L225 Difference]: With dead ends: 3038 [2020-09-24 18:19:54,818 INFO L226 Difference]: Without dead ends: 1880 [2020-09-24 18:19:54,824 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:19:54,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2020-09-24 18:19:54,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1801. [2020-09-24 18:19:54,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1801 states. [2020-09-24 18:19:54,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2197 transitions. [2020-09-24 18:19:54,892 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2197 transitions. Word has length 221 [2020-09-24 18:19:54,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:19:54,893 INFO L479 AbstractCegarLoop]: Abstraction has 1801 states and 2197 transitions. [2020-09-24 18:19:54,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:19:54,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2197 transitions. [2020-09-24 18:19:54,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-24 18:19:54,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:19:54,904 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:19:54,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:19:54,904 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:19:54,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:19:54,905 INFO L82 PathProgramCache]: Analyzing trace with hash -292831527, now seen corresponding path program 1 times [2020-09-24 18:19:54,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:19:54,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895872708] [2020-09-24 18:19:54,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:19:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:19:54,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:55,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:55,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:56,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:56,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:58,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:58,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:58,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:19:59,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:19:59,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-24 18:19:59,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:19:59,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 18:19:59,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:19:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:19:59,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 18:19:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 18:19:59,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:20:00,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:20:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:00,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:00,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 18:20:00,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:00,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:20:00,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:00,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:20:00,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:00,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:20:00,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:20:00,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 18:20:00,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:00,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:00,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 18:20:00,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:00,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 18:20:00,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:00,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:20:00,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:20:00,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-24 18:20:00,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:00,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 18:20:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:00,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:00,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:20:00,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 18:20:00,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:20:00,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-24 18:20:00,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:20:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:20:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 18:20:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-24 18:20:00,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:20:00,749 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 79 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:20:00,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895872708] [2020-09-24 18:20:00,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:20:00,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:20:00,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138674671] [2020-09-24 18:20:00,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:20:00,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:20:00,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:20:00,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:20:00,753 INFO L87 Difference]: Start difference. First operand 1801 states and 2197 transitions. Second operand 7 states. [2020-09-24 18:20:03,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:20:03,248 INFO L93 Difference]: Finished difference Result 3953 states and 4935 transitions. [2020-09-24 18:20:03,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 18:20:03,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-09-24 18:20:03,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:20:03,262 INFO L225 Difference]: With dead ends: 3953 [2020-09-24 18:20:03,262 INFO L226 Difference]: Without dead ends: 2176 [2020-09-24 18:20:03,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:20:03,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2020-09-24 18:20:03,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2097. [2020-09-24 18:20:03,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2097 states. [2020-09-24 18:20:03,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2567 transitions. [2020-09-24 18:20:03,342 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2567 transitions. Word has length 236 [2020-09-24 18:20:03,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:20:03,342 INFO L479 AbstractCegarLoop]: Abstraction has 2097 states and 2567 transitions. [2020-09-24 18:20:03,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:20:03,343 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2567 transitions. [2020-09-24 18:20:03,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-09-24 18:20:03,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:20:03,354 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, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 18:20:03,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:20:03,355 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:20:03,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:20:03,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1863648516, now seen corresponding path program 1 times [2020-09-24 18:20:03,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:20:03,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1840086569] [2020-09-24 18:20:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:20:03,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:20:03,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:03,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:03,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:20:04,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking...