/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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/Problem10_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:05:22,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:05:22,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:05:22,623 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:05:22,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:05:22,635 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:05:22,637 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:05:22,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:05:22,644 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:05:22,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:05:22,650 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:05:22,651 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:05:22,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:05:22,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:05:22,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:05:22,661 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:05:22,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:05:22,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:05:22,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:05:22,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:05:22,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:05:22,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:05:22,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:05:22,681 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:05:22,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:05:22,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:05:22,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:05:22,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:05:22,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:05:22,690 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:05:22,691 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:05:22,692 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:05:22,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:05:22,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:05:22,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:05:22,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:05:22,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:05:22,697 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:05:22,697 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:05:22,698 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:05:22,700 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:05:22,701 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 [2020-09-25 09:05:22,732 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:05:22,733 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:05:22,734 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:05:22,735 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:05:22,735 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:05:22,735 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:05:22,735 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:05:22,736 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:05:22,736 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:05:22,736 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:05:22,736 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:05:22,736 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:05:22,737 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:05:22,737 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:05:22,737 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:05:22,737 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:05:22,738 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:05:22,738 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:05:22,738 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:05:22,738 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:05:22,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:05:22,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:05:22,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:05:22,739 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:05:22,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:05:22,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:05:22,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:05:22,740 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:05:22,741 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:05:22,741 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:05:23,231 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:05:23,257 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:05:23,262 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:05:23,264 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:05:23,265 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:05:23,266 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-25 09:05:23,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5493f31e/a15b7efa7aea4e178be39e83c525ae36/FLAG18fdc1242 [2020-09-25 09:05:23,995 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:05:23,996 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-25 09:05:24,011 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5493f31e/a15b7efa7aea4e178be39e83c525ae36/FLAG18fdc1242 [2020-09-25 09:05:24,199 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5493f31e/a15b7efa7aea4e178be39e83c525ae36 [2020-09-25 09:05:24,212 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:05:24,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:05:24,218 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:24,218 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:05:24,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:05:24,224 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:24" (1/1) ... [2020-09-25 09:05:24,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:24, skipping insertion in model container [2020-09-25 09:05:24,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:05:24" (1/1) ... [2020-09-25 09:05:24,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:05:24,304 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:05:24,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:24,794 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:05:25,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:05:25,064 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:05:25,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:25 WrapperNode [2020-09-25 09:05:25,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:05:25,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:05:25,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:05:25,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:05:25,086 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:25" (1/1) ... [2020-09-25 09:05:25,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:25" (1/1) ... [2020-09-25 09:05:25,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:25" (1/1) ... [2020-09-25 09:05:25,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:25" (1/1) ... [2020-09-25 09:05:25,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:25" (1/1) ... [2020-09-25 09:05:25,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:25" (1/1) ... [2020-09-25 09:05:25,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:25" (1/1) ... [2020-09-25 09:05:25,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:05:25,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:05:25,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:05:25,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:05:25,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:25" (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 [2020-09-25 09:05:25,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:05:25,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:05:25,308 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:05:25,308 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:05:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:05:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:05:25,309 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:05:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:05:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:05:25,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:05:25,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:05:27,008 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:05:27,009 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:05:27,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:27 BoogieIcfgContainer [2020-09-25 09:05:27,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:05:27,019 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:05:27,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:05:27,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:05:27,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:05:24" (1/3) ... [2020-09-25 09:05:27,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:27, skipping insertion in model container [2020-09-25 09:05:27,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:05:25" (2/3) ... [2020-09-25 09:05:27,026 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@564d2dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:05:27, skipping insertion in model container [2020-09-25 09:05:27,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:05:27" (3/3) ... [2020-09-25 09:05:27,028 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label22.c [2020-09-25 09:05:27,040 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:05:27,052 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:05:27,072 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:05:27,109 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:05:27,110 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:05:27,110 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:05:27,110 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:05:27,110 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:05:27,110 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:05:27,111 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:05:27,111 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:05:27,144 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 09:05:27,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 09:05:27,156 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:27,158 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] [2020-09-25 09:05:27,159 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:27,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:27,165 INFO L82 PathProgramCache]: Analyzing trace with hash 382162911, now seen corresponding path program 1 times [2020-09-25 09:05:27,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:27,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955057888] [2020-09-25 09:05:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:27,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:27,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:27,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:28,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:28,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 09:05:28,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:28,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 798 [2020-09-25 09:05:28,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:28,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:28,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:05:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 09:05:28,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 09:05:28,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 09:05:28,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:28,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:28,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:28,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:28,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:28,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 09:05:28,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:28,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:28,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 09:05:28,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:28,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:28,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955057888] [2020-09-25 09:05:28,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:05:28,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:05:28,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796297999] [2020-09-25 09:05:28,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:05:28,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:28,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:05:28,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:05:28,444 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 09:05:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:30,754 INFO L93 Difference]: Finished difference Result 1160 states and 1585 transitions. [2020-09-25 09:05:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:05:30,757 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-25 09:05:30,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:30,808 INFO L225 Difference]: With dead ends: 1160 [2020-09-25 09:05:30,808 INFO L226 Difference]: Without dead ends: 631 [2020-09-25 09:05:30,819 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 [2020-09-25 09:05:30,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-09-25 09:05:30,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 576. [2020-09-25 09:05:30,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 09:05:30,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 708 transitions. [2020-09-25 09:05:30,920 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 708 transitions. Word has length 56 [2020-09-25 09:05:30,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:30,921 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 708 transitions. [2020-09-25 09:05:30,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:05:30,921 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 708 transitions. [2020-09-25 09:05:30,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 09:05:30,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:30,930 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:30,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:05:30,931 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:30,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:30,932 INFO L82 PathProgramCache]: Analyzing trace with hash 132408824, now seen corresponding path program 1 times [2020-09-25 09:05:30,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:30,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [468318443] [2020-09-25 09:05:30,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:30,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:31,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:32,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:35,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:35,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 09:05:35,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:05:35,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 09:05:35,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:35,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 09:05:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:35,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-09-25 09:05:36,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:36,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:36,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:36,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:36,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:36,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:36,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:36,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 09:05:36,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:36,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:36,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:36,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:36,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:36,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:36,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:36,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:36,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:36,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:05:36,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:36,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 09:05:36,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:36,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:36,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:36,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 09:05:36,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:36,665 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:36,665 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [468318443] [2020-09-25 09:05:36,666 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:36,666 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 09:05:36,666 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364213629] [2020-09-25 09:05:36,669 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 09:05:36,669 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:36,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 09:05:36,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:05:36,670 INFO L87 Difference]: Start difference. First operand 576 states and 708 transitions. Second operand 12 states. [2020-09-25 09:05:39,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:39,632 INFO L93 Difference]: Finished difference Result 1521 states and 1944 transitions. [2020-09-25 09:05:39,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 09:05:39,633 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 139 [2020-09-25 09:05:39,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:39,644 INFO L225 Difference]: With dead ends: 1521 [2020-09-25 09:05:39,644 INFO L226 Difference]: Without dead ends: 884 [2020-09-25 09:05:39,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=212, Unknown=0, NotChecked=0, Total=342 [2020-09-25 09:05:39,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2020-09-25 09:05:39,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 705. [2020-09-25 09:05:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705 states. [2020-09-25 09:05:39,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705 states to 705 states and 844 transitions. [2020-09-25 09:05:39,708 INFO L78 Accepts]: Start accepts. Automaton has 705 states and 844 transitions. Word has length 139 [2020-09-25 09:05:39,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:39,710 INFO L479 AbstractCegarLoop]: Abstraction has 705 states and 844 transitions. [2020-09-25 09:05:39,711 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 09:05:39,711 INFO L276 IsEmpty]: Start isEmpty. Operand 705 states and 844 transitions. [2020-09-25 09:05:39,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 09:05:39,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:39,722 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:39,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:05:39,722 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:39,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:39,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1125895043, now seen corresponding path program 1 times [2020-09-25 09:05:39,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:39,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873259666] [2020-09-25 09:05:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:39,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:42,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:42,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 09:05:42,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:42,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2717 [2020-09-25 09:05:42,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:42,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:42,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 09:05:42,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 09:05:42,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:42,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:42,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:42,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:42,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:42,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:42,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 09:05:42,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:42,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:42,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:42,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 09:05:42,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:05:42,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:42,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:42,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:42,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:42,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-25 09:05:42,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:42,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 09:05:42,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:42,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:05:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 09:05:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:05:42,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873259666] [2020-09-25 09:05:42,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:42,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:05:42,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650278579] [2020-09-25 09:05:42,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:05:42,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:42,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:05:42,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:42,943 INFO L87 Difference]: Start difference. First operand 705 states and 844 transitions. Second operand 6 states. [2020-09-25 09:05:44,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:44,730 INFO L93 Difference]: Finished difference Result 1899 states and 2381 transitions. [2020-09-25 09:05:44,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:05:44,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-09-25 09:05:44,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:44,742 INFO L225 Difference]: With dead ends: 1899 [2020-09-25 09:05:44,743 INFO L226 Difference]: Without dead ends: 1209 [2020-09-25 09:05:44,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:05:44,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-09-25 09:05:44,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1019. [2020-09-25 09:05:44,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019 states. [2020-09-25 09:05:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1265 transitions. [2020-09-25 09:05:44,804 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1265 transitions. Word has length 139 [2020-09-25 09:05:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:44,810 INFO L479 AbstractCegarLoop]: Abstraction has 1019 states and 1265 transitions. [2020-09-25 09:05:44,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:05:44,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1265 transitions. [2020-09-25 09:05:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 09:05:44,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:44,814 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:44,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:05:44,815 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:44,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:44,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1690817075, now seen corresponding path program 1 times [2020-09-25 09:05:44,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:44,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025035011] [2020-09-25 09:05:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:44,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:44,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:45,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:47,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 09:05:47,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:05:47,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2629 [2020-09-25 09:05:47,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:47,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:05:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 09:05:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 09:05:47,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:47,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:47,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:47,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:47,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:47,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:47,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 09:05:47,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:47,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:05:47,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:47,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:05:47,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:47,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:47,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:47,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:47,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 09:05:47,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:47,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 09:05:47,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:47,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:47,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:05:47,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:47,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 09:05:47,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:47,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025035011] [2020-09-25 09:05:47,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:47,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 09:05:47,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447279570] [2020-09-25 09:05:47,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 09:05:47,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:47,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 09:05:47,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 09:05:47,767 INFO L87 Difference]: Start difference. First operand 1019 states and 1265 transitions. Second operand 5 states. [2020-09-25 09:05:49,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:49,537 INFO L93 Difference]: Finished difference Result 2649 states and 3421 transitions. [2020-09-25 09:05:49,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 09:05:49,537 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-09-25 09:05:49,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:49,547 INFO L225 Difference]: With dead ends: 2649 [2020-09-25 09:05:49,547 INFO L226 Difference]: Without dead ends: 1645 [2020-09-25 09:05:49,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:05:49,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2020-09-25 09:05:49,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1625. [2020-09-25 09:05:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1625 states. [2020-09-25 09:05:49,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1625 states to 1625 states and 2101 transitions. [2020-09-25 09:05:49,601 INFO L78 Accepts]: Start accepts. Automaton has 1625 states and 2101 transitions. Word has length 145 [2020-09-25 09:05:49,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:49,602 INFO L479 AbstractCegarLoop]: Abstraction has 1625 states and 2101 transitions. [2020-09-25 09:05:49,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 09:05:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1625 states and 2101 transitions. [2020-09-25 09:05:49,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 09:05:49,606 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:49,607 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:49,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:05:49,607 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:49,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:49,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1959608273, now seen corresponding path program 1 times [2020-09-25 09:05:49,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:49,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050783792] [2020-09-25 09:05:49,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:49,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:49,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:49,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:50,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:52,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:53,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:53,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 09:05:53,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 09:05:53,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4302 [2020-09-25 09:05:53,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:53,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:05:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:05:53,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-09-25 09:05:53,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:54,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:05:54,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:54,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:54,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:54,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:05:54,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:05:54,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 09:05:54,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:54,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:54,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:05:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:54,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:05:54,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:54,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:05:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:54,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:54,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:54,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:05:54,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 09:05:54,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:05:54,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-09-25 09:05:54,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:05:54,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:05:54,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:05:54,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:05:54,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 09:05:54,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:05:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:05:54,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050783792] [2020-09-25 09:05:54,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:05:54,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:05:54,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839663629] [2020-09-25 09:05:54,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:05:54,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:05:54,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:05:54,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:05:54,729 INFO L87 Difference]: Start difference. First operand 1625 states and 2101 transitions. Second operand 10 states. [2020-09-25 09:05:57,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:05:57,478 INFO L93 Difference]: Finished difference Result 3743 states and 4914 transitions. [2020-09-25 09:05:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 09:05:57,479 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 178 [2020-09-25 09:05:57,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:05:57,494 INFO L225 Difference]: With dead ends: 3743 [2020-09-25 09:05:57,494 INFO L226 Difference]: Without dead ends: 2254 [2020-09-25 09:05:57,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2020-09-25 09:05:57,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2020-09-25 09:05:57,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2234. [2020-09-25 09:05:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2234 states. [2020-09-25 09:05:57,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2234 states to 2234 states and 2817 transitions. [2020-09-25 09:05:57,573 INFO L78 Accepts]: Start accepts. Automaton has 2234 states and 2817 transitions. Word has length 178 [2020-09-25 09:05:57,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:05:57,573 INFO L479 AbstractCegarLoop]: Abstraction has 2234 states and 2817 transitions. [2020-09-25 09:05:57,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:05:57,574 INFO L276 IsEmpty]: Start isEmpty. Operand 2234 states and 2817 transitions. [2020-09-25 09:05:57,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 09:05:57,580 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:05:57,580 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:05:57,580 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:05:57,581 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:05:57,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:05:57,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1580167984, now seen corresponding path program 1 times [2020-09-25 09:05:57,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:05:57,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687907598] [2020-09-25 09:05:57,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:05:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:05:57,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:58,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:05:59,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:02,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:02,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 09:06:02,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 09:06:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-25 09:06:02,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:02,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:06:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 09:06:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-09-25 09:06:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:02,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:06:02,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:02,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:02,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:02,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 09:06:02,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:06:02,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 09:06:02,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:02,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:02,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 09:06:02,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:02,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 09:06:02,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:02,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 09:06:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:02,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:03,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:06:03,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-09-25 09:06:03,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:06:03,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 746 [2020-09-25 09:06:03,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:06:03,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:06:03,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:06:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:06:03,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 09:06:03,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:06:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:06:03,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687907598] [2020-09-25 09:06:03,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:06:03,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 09:06:03,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759644151] [2020-09-25 09:06:03,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 09:06:03,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:06:03,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 09:06:03,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-25 09:06:03,803 INFO L87 Difference]: Start difference. First operand 2234 states and 2817 transitions. Second operand 10 states. [2020-09-25 09:06:05,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:06:05,914 INFO L93 Difference]: Finished difference Result 4333 states and 5479 transitions. [2020-09-25 09:06:05,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:06:05,915 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 183 [2020-09-25 09:06:05,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:06:05,927 INFO L225 Difference]: With dead ends: 4333 [2020-09-25 09:06:05,927 INFO L226 Difference]: Without dead ends: 2232 [2020-09-25 09:06:05,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-25 09:06:05,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2232 states. [2020-09-25 09:06:05,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2232 to 2230. [2020-09-25 09:06:05,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2230 states. [2020-09-25 09:06:06,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2230 states to 2230 states and 2795 transitions. [2020-09-25 09:06:06,008 INFO L78 Accepts]: Start accepts. Automaton has 2230 states and 2795 transitions. Word has length 183 [2020-09-25 09:06:06,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:06:06,009 INFO L479 AbstractCegarLoop]: Abstraction has 2230 states and 2795 transitions. [2020-09-25 09:06:06,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 09:06:06,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2230 states and 2795 transitions. [2020-09-25 09:06:06,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-25 09:06:06,017 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:06:06,017 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 09:06:06,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 09:06:06,018 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:06:06,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:06:06,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1446453513, now seen corresponding path program 1 times [2020-09-25 09:06:06,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:06:06,019 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438707888] [2020-09-25 09:06:06,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:06:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:06:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:06,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:06,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:07,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:09,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:06:09,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking...