/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/Problem02_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:23:16,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:23:16,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:23:16,063 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:23:16,064 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:23:16,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:23:16,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:23:16,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:23:16,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:23:16,085 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:23:16,086 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:23:16,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:23:16,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:23:16,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:23:16,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:23:16,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:23:16,096 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:23:16,099 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:23:16,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:23:16,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:23:16,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:23:16,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:23:16,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:23:16,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:23:16,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:23:16,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:23:16,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:23:16,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:23:16,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:23:16,134 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:23:16,135 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:23:16,135 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:23:16,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:23:16,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:23:16,146 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:23:16,146 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:23:16,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:23:16,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:23:16,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:23:16,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:23:16,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:23:16,152 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 12:23:16,196 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:23:16,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:23:16,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:23:16,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:23:16,198 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:23:16,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:23:16,198 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:23:16,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:23:16,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:23:16,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:23:16,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:23:16,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:23:16,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:23:16,200 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:23:16,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:23:16,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:23:16,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:23:16,200 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:23:16,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:23:16,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:23:16,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:23:16,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:23:16,201 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:23:16,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:23:16,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:23:16,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:23:16,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:23:16,202 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:23:16,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:23:16,203 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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:23:16,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:23:16,652 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:23:16,657 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:23:16,659 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:23:16,660 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:23:16,661 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-25 12:23:16,732 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81365285e/d808068a23604135acf00d14bccc9ac9/FLAG19ce1ceb2 [2020-09-25 12:23:17,375 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:23:17,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label09.c [2020-09-25 12:23:17,393 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81365285e/d808068a23604135acf00d14bccc9ac9/FLAG19ce1ceb2 [2020-09-25 12:23:17,579 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81365285e/d808068a23604135acf00d14bccc9ac9 [2020-09-25 12:23:17,592 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:23:17,598 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:23:17,600 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:23:17,600 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:23:17,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:23:17,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:23:17" (1/1) ... [2020-09-25 12:23:17,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157ca41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:17, skipping insertion in model container [2020-09-25 12:23:17,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:23:17" (1/1) ... [2020-09-25 12:23:17,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:23:17,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:23:18,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:23:18,327 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:23:18,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:23:18,509 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:23:18,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:18 WrapperNode [2020-09-25 12:23:18,509 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:23:18,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:23:18,511 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:23:18,511 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:23:18,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:18" (1/1) ... [2020-09-25 12:23:18,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:18" (1/1) ... [2020-09-25 12:23:18,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:18" (1/1) ... [2020-09-25 12:23:18,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:18" (1/1) ... [2020-09-25 12:23:18,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:18" (1/1) ... [2020-09-25 12:23:18,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:18" (1/1) ... [2020-09-25 12:23:18,617 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:18" (1/1) ... [2020-09-25 12:23:18,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:23:18,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:23:18,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:23:18,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:23:18,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:18" (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 12:23:18,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:23:18,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:23:18,705 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:23:18,705 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:23:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:23:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:23:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:23:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:23:18,706 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:23:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:23:18,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:23:19,995 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:23:19,996 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:23:20,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:23:20 BoogieIcfgContainer [2020-09-25 12:23:20,005 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:23:20,007 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:23:20,007 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:23:20,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:23:20,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:23:17" (1/3) ... [2020-09-25 12:23:20,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386d8e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:23:20, skipping insertion in model container [2020-09-25 12:23:20,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:23:18" (2/3) ... [2020-09-25 12:23:20,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@386d8e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:23:20, skipping insertion in model container [2020-09-25 12:23:20,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:23:20" (3/3) ... [2020-09-25 12:23:20,019 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label09.c [2020-09-25 12:23:20,031 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:23:20,043 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:23:20,067 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:23:20,103 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:23:20,103 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:23:20,103 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:23:20,103 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:23:20,104 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:23:20,104 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:23:20,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:23:20,104 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:23:20,137 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 12:23:20,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 12:23:20,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:20,160 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] [2020-09-25 12:23:20,160 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:20,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:20,168 INFO L82 PathProgramCache]: Analyzing trace with hash -260189822, now seen corresponding path program 1 times [2020-09-25 12:23:20,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:20,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738089393] [2020-09-25 12:23:20,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:20,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:20,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:20,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:21,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:21,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:23,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:24,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:25,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:25,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:25,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 12:23:25,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:23:25,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 12:23:25,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:25,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:23:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:23:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 12:23:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:23:25,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:25,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:25,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:25,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:25,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:25,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 12:23:25,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:25,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:23:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:25,818 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 12:23:25,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738089393] [2020-09-25 12:23:25,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:23:25,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:23:25,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714640488] [2020-09-25 12:23:25,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:23:25,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:25,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:23:25,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:23:25,854 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 12:23:28,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:28,095 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 12:23:28,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:23:28,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-09-25 12:23:28,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:28,124 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 12:23:28,124 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 12:23:28,137 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 12:23:28,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 12:23:28,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 12:23:28,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 12:23:28,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 12:23:28,238 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 147 [2020-09-25 12:23:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:28,240 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 12:23:28,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:23:28,240 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 12:23:28,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-09-25 12:23:28,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:28,255 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:28,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:23:28,256 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:28,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:28,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1869570329, now seen corresponding path program 1 times [2020-09-25 12:23:28,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:28,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1902891435] [2020-09-25 12:23:28,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:28,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:28,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:28,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:28,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:28,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:32,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:32,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:33,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:33,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-25 12:23:33,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:23:33,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-09-25 12:23:33,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:33,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:33,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:33,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-09-25 12:23:33,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 12:23:33,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:33,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:33,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:33,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:33,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:33,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:33,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:23:33,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:33,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:33,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:33,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:33,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:33,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:23:33,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:33,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:33,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:33,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:23:33,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:33,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:23:33,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:33,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:33,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:33,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 12:23:33,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:33,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1902891435] [2020-09-25 12:23:33,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:33,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:23:33,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293070632] [2020-09-25 12:23:33,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:33,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:33,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:33,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:33,672 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 12:23:35,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:35,664 INFO L93 Difference]: Finished difference Result 1679 states and 2109 transitions. [2020-09-25 12:23:35,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:35,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-09-25 12:23:35,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:35,674 INFO L225 Difference]: With dead ends: 1679 [2020-09-25 12:23:35,674 INFO L226 Difference]: Without dead ends: 1086 [2020-09-25 12:23:35,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:23:35,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2020-09-25 12:23:35,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 967. [2020-09-25 12:23:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 967 states. [2020-09-25 12:23:35,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 967 states to 967 states and 1216 transitions. [2020-09-25 12:23:35,731 INFO L78 Accepts]: Start accepts. Automaton has 967 states and 1216 transitions. Word has length 181 [2020-09-25 12:23:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:35,731 INFO L479 AbstractCegarLoop]: Abstraction has 967 states and 1216 transitions. [2020-09-25 12:23:35,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:35,731 INFO L276 IsEmpty]: Start isEmpty. Operand 967 states and 1216 transitions. [2020-09-25 12:23:35,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-25 12:23:35,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:35,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:35,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:23:35,738 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:35,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:35,739 INFO L82 PathProgramCache]: Analyzing trace with hash 175185241, now seen corresponding path program 1 times [2020-09-25 12:23:35,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:35,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1417973601] [2020-09-25 12:23:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:35,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:35,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:36,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:37,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:38,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:39,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:40,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:40,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 12:23:40,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:23:40,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 12:23:40,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:40,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:40,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 12:23:40,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 12:23:40,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 12:23:40,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:41,508 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 39 [2020-09-25 12:23:41,704 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 39 [2020-09-25 12:23:41,828 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 34 [2020-09-25 12:23:41,954 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 30 [2020-09-25 12:23:42,137 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-09-25 12:23:42,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:42,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:42,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:42,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:42,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:42,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:23:42,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:42,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:42,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:23:42,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:42,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:23:42,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:42,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:42,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:42,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:42,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:42,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:42,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 12:23:42,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:42,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 12:23:42,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:42,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:23:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 12:23:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:42,838 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:42,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1417973601] [2020-09-25 12:23:42,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:42,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:23:42,840 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668709876] [2020-09-25 12:23:42,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:23:42,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:42,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:23:42,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:23:42,842 INFO L87 Difference]: Start difference. First operand 967 states and 1216 transitions. Second operand 16 states. [2020-09-25 12:23:48,040 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 72 [2020-09-25 12:23:48,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:48,466 INFO L93 Difference]: Finished difference Result 3381 states and 4538 transitions. [2020-09-25 12:23:48,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:23:48,468 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 191 [2020-09-25 12:23:48,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:48,496 INFO L225 Difference]: With dead ends: 3381 [2020-09-25 12:23:48,497 INFO L226 Difference]: Without dead ends: 2436 [2020-09-25 12:23:48,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2020-09-25 12:23:48,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2020-09-25 12:23:48,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2031. [2020-09-25 12:23:48,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2031 states. [2020-09-25 12:23:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2577 transitions. [2020-09-25 12:23:48,614 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2577 transitions. Word has length 191 [2020-09-25 12:23:48,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:48,624 INFO L479 AbstractCegarLoop]: Abstraction has 2031 states and 2577 transitions. [2020-09-25 12:23:48,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:23:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2577 transitions. [2020-09-25 12:23:48,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 12:23:48,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:48,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:48,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:23:48,640 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:48,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:48,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1941306959, now seen corresponding path program 1 times [2020-09-25 12:23:48,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:48,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159671065] [2020-09-25 12:23:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:48,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:49,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:49,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:50,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:52,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:52,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:53,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:53,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 12:23:53,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:23:53,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:23:53,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:53,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:23:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 12:23:53,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 12:23:53,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:53,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:53,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:53,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:53,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:23:53,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:53,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:23:53,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:53,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:53,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:53,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:53,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:23:53,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:53,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:53,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:53,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:23:53,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:53,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:23:53,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:53,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:53,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:53,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 12:23:53,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:53,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:53,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:53,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:23:53,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:54,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 12:23:54,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:54,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:54,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:23:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:54,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:23:54,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:54,203 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:23:54,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159671065] [2020-09-25 12:23:54,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:54,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:23:54,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968913033] [2020-09-25 12:23:54,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:23:54,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:54,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:23:54,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:23:54,206 INFO L87 Difference]: Start difference. First operand 2031 states and 2577 transitions. Second operand 8 states. [2020-09-25 12:23:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:58,722 INFO L93 Difference]: Finished difference Result 6192 states and 8345 transitions. [2020-09-25 12:23:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:23:58,723 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 203 [2020-09-25 12:23:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:58,749 INFO L225 Difference]: With dead ends: 6192 [2020-09-25 12:23:58,749 INFO L226 Difference]: Without dead ends: 3997 [2020-09-25 12:23:58,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:23:58,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2020-09-25 12:23:58,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3779. [2020-09-25 12:23:58,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3779 states. [2020-09-25 12:23:58,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3779 states to 3779 states and 4707 transitions. [2020-09-25 12:23:58,889 INFO L78 Accepts]: Start accepts. Automaton has 3779 states and 4707 transitions. Word has length 203 [2020-09-25 12:23:58,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:58,890 INFO L479 AbstractCegarLoop]: Abstraction has 3779 states and 4707 transitions. [2020-09-25 12:23:58,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:23:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3779 states and 4707 transitions. [2020-09-25 12:23:58,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-25 12:23:58,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:58,905 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:58,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:23:58,905 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:58,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:58,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1139808123, now seen corresponding path program 1 times [2020-09-25 12:23:58,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:58,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728169662] [2020-09-25 12:23:58,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:59,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:59,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:59,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:59,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:59,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:00,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:00,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:03,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:03,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-25 12:24:03,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:24:03,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:24:03,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:03,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:24:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-09-25 12:24:03,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 12:24:03,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:04,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:24:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:04,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:04,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:04,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:24:04,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:04,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:24:04,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:04,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:24:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:04,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:24:04,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:24:04,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:24:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:04,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:04,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:04,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 12:24:04,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:04,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:24:04,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:04,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:04,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:24:04,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:04,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:24:04,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:04,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 12:24:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:24:04,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:24:04,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:24:04,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 12:24:04,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:24:04,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 12:24:04,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:24:04,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:24:04,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:24:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:24:04,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:24:04,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:24:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 12:24:04,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728169662] [2020-09-25 12:24:04,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:24:04,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:24:04,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610450287] [2020-09-25 12:24:04,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:24:04,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:24:04,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:24:04,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:24:04,381 INFO L87 Difference]: Start difference. First operand 3779 states and 4707 transitions. Second operand 5 states.