/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/Problem01_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:22:47,682 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:22:47,686 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:22:47,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:22:47,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:22:47,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:22:47,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:22:47,758 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:22:47,761 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:22:47,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:22:47,766 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:22:47,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:22:47,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:22:47,772 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:22:47,776 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:22:47,778 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:22:47,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:22:47,782 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:22:47,784 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:22:47,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:22:47,798 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:22:47,799 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:22:47,801 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:22:47,802 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:22:47,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:22:47,805 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:22:47,805 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:22:47,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:22:47,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:22:47,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-25 12:22:47,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:22:47,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:22:47,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:22:47,825 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 12:22:47,880 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:22:47,880 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:22:47,883 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:22:47,884 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:22:47,884 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:22:47,884 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:22:47,885 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:22:47,885 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:22:47,885 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:22:47,885 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:22:47,886 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:22:47,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:22:47,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:22:47,887 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:22:47,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:22:47,888 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:22:47,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:22:47,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:22:47,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:22:47,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:22:47,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:22:47,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:22:47,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:22:47,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:22:47,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:22:47,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:22:47,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:22:47,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:22:47,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:22:47,891 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 12:22:48,333 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:22:48,359 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:22:48,365 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:22:48,367 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:22:48,368 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:22:48,369 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 12:22:48,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed1aa7c30/0ca026800e784d6a9a9ca335acb5ab66/FLAGbaf8bc002 [2020-09-25 12:22:49,171 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:22:49,172 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label58.c [2020-09-25 12:22:49,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed1aa7c30/0ca026800e784d6a9a9ca335acb5ab66/FLAGbaf8bc002 [2020-09-25 12:22:49,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed1aa7c30/0ca026800e784d6a9a9ca335acb5ab66 [2020-09-25 12:22:49,402 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:22:49,409 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:22:49,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:49,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:22:49,415 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:22:49,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:49" (1/1) ... [2020-09-25 12:22:49,421 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674884e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:49, skipping insertion in model container [2020-09-25 12:22:49,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:22:49" (1/1) ... [2020-09-25 12:22:49,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:22:49,489 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:22:49,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:49,962 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:22:50,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:22:50,252 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:22:50,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:50 WrapperNode [2020-09-25 12:22:50,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:22:50,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:22:50,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:22:50,255 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:22:50,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:50" (1/1) ... [2020-09-25 12:22:50,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:50" (1/1) ... [2020-09-25 12:22:50,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:50" (1/1) ... [2020-09-25 12:22:50,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:50" (1/1) ... [2020-09-25 12:22:50,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:50" (1/1) ... [2020-09-25 12:22:50,357 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:50" (1/1) ... [2020-09-25 12:22:50,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:50" (1/1) ... [2020-09-25 12:22:50,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:22:50,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:22:50,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:22:50,371 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:22:50,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:50" (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 12:22:50,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:22:50,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:22:50,472 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:22:50,472 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:22:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:22:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:22:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:22:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:22:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:22:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:22:50,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:22:51,958 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:22:51,962 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:22:51,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:51 BoogieIcfgContainer [2020-09-25 12:22:51,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:22:51,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:22:51,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:22:51,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:22:51,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:22:49" (1/3) ... [2020-09-25 12:22:51,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc6cb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:51, skipping insertion in model container [2020-09-25 12:22:51,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:22:50" (2/3) ... [2020-09-25 12:22:51,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fc6cb6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:22:51, skipping insertion in model container [2020-09-25 12:22:51,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:22:51" (3/3) ... [2020-09-25 12:22:51,998 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label58.c [2020-09-25 12:22:52,013 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:22:52,033 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:22:52,057 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:22:52,102 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:22:52,103 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:22:52,103 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:22:52,103 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:22:52,104 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:22:52,104 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:22:52,104 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:22:52,104 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:22:52,149 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 12:22:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-25 12:22:52,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:22:52,172 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] [2020-09-25 12:22:52,172 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:22:52,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:22:52,181 INFO L82 PathProgramCache]: Analyzing trace with hash 2032478133, now seen corresponding path program 1 times [2020-09-25 12:22:52,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:22:52,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597125458] [2020-09-25 12:22:52,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:22:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:52,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:52,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:53,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:53,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:54,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:55,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:56,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:57,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:57,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-09-25 12:22:57,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:22:57,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-09-25 12:22:57,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:57,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:57,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:22:57,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:22:57,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-09-25 12:22:57,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:22:57,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:22:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:22:57,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:22:57,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:22:57,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:22:57,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:22:57,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 12:22:57,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:22:57,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:22:57,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:22:57,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:22:57,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 12:22:57,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:22:57,954 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 12:22:57,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597125458] [2020-09-25 12:22:57,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:22:57,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:22:57,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453507232] [2020-09-25 12:22:57,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:22:57,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:22:57,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:22:57,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:22:57,992 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 12:23:00,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:00,112 INFO L93 Difference]: Finished difference Result 1235 states and 1633 transitions. [2020-09-25 12:23:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:23:00,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-09-25 12:23:00,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:00,143 INFO L225 Difference]: With dead ends: 1235 [2020-09-25 12:23:00,143 INFO L226 Difference]: Without dead ends: 661 [2020-09-25 12:23:00,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 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 12:23:00,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2020-09-25 12:23:00,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 605. [2020-09-25 12:23:00,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-09-25 12:23:00,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 715 transitions. [2020-09-25 12:23:00,278 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 715 transitions. Word has length 127 [2020-09-25 12:23:00,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:00,280 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 715 transitions. [2020-09-25 12:23:00,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:23:00,281 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 715 transitions. [2020-09-25 12:23:00,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 12:23:00,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:00,299 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 12:23:00,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:23:00,300 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:00,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:00,301 INFO L82 PathProgramCache]: Analyzing trace with hash 135792120, now seen corresponding path program 1 times [2020-09-25 12:23:00,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:00,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889122221] [2020-09-25 12:23:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:00,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:00,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:00,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:01,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:01,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:01,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:02,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:03,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:04,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:05,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-09-25 12:23:05,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:23:05,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:23:05,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:05,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:05,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:23:05,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:23:05,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 12:23:05,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:05,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:05,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:05,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:05,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:23:05,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:05,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:23:05,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:05,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:05,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:23:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:05,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:05,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:05,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:23:05,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:05,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:23:05,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:05,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:05,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:05,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:05,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 12:23:05,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:05,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889122221] [2020-09-25 12:23:05,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:05,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:23:05,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950032247] [2020-09-25 12:23:05,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:23:05,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:05,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:23:05,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:23:05,675 INFO L87 Difference]: Start difference. First operand 605 states and 715 transitions. Second operand 5 states. [2020-09-25 12:23:07,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:07,522 INFO L93 Difference]: Finished difference Result 1563 states and 1910 transitions. [2020-09-25 12:23:07,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:23:07,522 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-09-25 12:23:07,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:07,529 INFO L225 Difference]: With dead ends: 1563 [2020-09-25 12:23:07,530 INFO L226 Difference]: Without dead ends: 982 [2020-09-25 12:23:07,532 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 12:23:07,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-09-25 12:23:07,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 748. [2020-09-25 12:23:07,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 12:23:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 923 transitions. [2020-09-25 12:23:07,566 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 923 transitions. Word has length 144 [2020-09-25 12:23:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:07,568 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 923 transitions. [2020-09-25 12:23:07,568 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:23:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 923 transitions. [2020-09-25 12:23:07,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-09-25 12:23:07,573 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:07,574 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:23:07,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:23:07,574 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:07,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:07,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1441250023, now seen corresponding path program 1 times [2020-09-25 12:23:07,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:07,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666416074] [2020-09-25 12:23:07,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:07,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:07,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:08,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:10,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:11,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:12,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:12,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:12,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-09-25 12:23:12,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:23:12,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 12:23:12,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:12,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:12,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:23:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 12:23:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 12:23:12,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:13,219 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 36 [2020-09-25 12:23:13,463 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2020-09-25 12:23:13,588 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-09-25 12:23:13,723 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 39 [2020-09-25 12:23:14,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:14,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:14,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:14,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:23:14,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:14,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:23:14,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:14,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:23:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:14,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:23:14,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:14,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:23:14,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:14,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:14,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:14,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:23:14,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:14,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 12:23:14,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:14,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:23:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:14,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:23:14,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:15,019 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:15,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [666416074] [2020-09-25 12:23:15,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:15,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 12:23:15,021 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771306734] [2020-09-25 12:23:15,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 12:23:15,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:15,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 12:23:15,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2020-09-25 12:23:15,023 INFO L87 Difference]: Start difference. First operand 748 states and 923 transitions. Second operand 20 states. [2020-09-25 12:23:16,395 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-09-25 12:23:16,856 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 106 [2020-09-25 12:23:17,233 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 93 [2020-09-25 12:23:17,625 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 90 [2020-09-25 12:23:18,016 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 103 [2020-09-25 12:23:18,746 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 100 [2020-09-25 12:23:19,221 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 97 [2020-09-25 12:23:20,134 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-09-25 12:23:21,030 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 94 [2020-09-25 12:23:21,687 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 94 [2020-09-25 12:23:22,080 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2020-09-25 12:23:22,303 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 39 [2020-09-25 12:23:22,874 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-09-25 12:23:23,617 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 89 [2020-09-25 12:23:24,133 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-09-25 12:23:24,841 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-09-25 12:23:25,382 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 83 [2020-09-25 12:23:26,237 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2020-09-25 12:23:27,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:23:27,492 INFO L93 Difference]: Finished difference Result 1924 states and 2506 transitions. [2020-09-25 12:23:27,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-09-25 12:23:27,493 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 149 [2020-09-25 12:23:27,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:23:27,500 INFO L225 Difference]: With dead ends: 1924 [2020-09-25 12:23:27,501 INFO L226 Difference]: Without dead ends: 1200 [2020-09-25 12:23:27,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 493 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=604, Invalid=1652, Unknown=0, NotChecked=0, Total=2256 [2020-09-25 12:23:27,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2020-09-25 12:23:27,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1113. [2020-09-25 12:23:27,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1113 states. [2020-09-25 12:23:27,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1272 transitions. [2020-09-25 12:23:27,540 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1272 transitions. Word has length 149 [2020-09-25 12:23:27,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:23:27,540 INFO L479 AbstractCegarLoop]: Abstraction has 1113 states and 1272 transitions. [2020-09-25 12:23:27,540 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 12:23:27,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1272 transitions. [2020-09-25 12:23:27,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-09-25 12:23:27,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:23:27,546 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:23:27,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:23:27,546 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:23:27,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:23:27,547 INFO L82 PathProgramCache]: Analyzing trace with hash -451366022, now seen corresponding path program 1 times [2020-09-25 12:23:27,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:23:27,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306587421] [2020-09-25 12:23:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:23:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:27,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:28,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:28,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:29,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:30,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:32,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:32,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-09-25 12:23:32,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:23:32,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 12:23:32,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:32,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:32,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 12:23:32,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 12:23:32,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 12:23:32,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:23:33,257 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2020-09-25 12:23:33,470 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 48 [2020-09-25 12:23:33,733 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 49 [2020-09-25 12:23:33,997 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 45 [2020-09-25 12:23:34,259 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 41 [2020-09-25 12:23:34,500 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 37 [2020-09-25 12:23:34,710 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 32 [2020-09-25 12:23:34,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:23:34,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:34,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:34,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:34,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 12:23:34,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:23:34,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:23:34,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:34,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:34,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:23:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:34,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 12:23:34,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:34,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 12:23:34,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:23:34,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:34,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:23:35,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:23:35,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 12:23:35,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:23:35,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 12:23:35,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:23:35,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:23:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:23:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:23:35,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:23:35,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:23:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:23:35,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [306587421] [2020-09-25 12:23:35,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:23:35,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 12:23:35,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075871305] [2020-09-25 12:23:35,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 12:23:35,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:23:35,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 12:23:35,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:23:35,342 INFO L87 Difference]: Start difference. First operand 1113 states and 1272 transitions. Second operand 19 states. [2020-09-25 12:23:37,519 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-09-25 12:23:37,755 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-09-25 12:23:38,306 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 112 [2020-09-25 12:23:38,906 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 109