/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=0.1 --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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:06:22,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:06:22,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:06:22,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:06:22,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:06:22,767 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:06:22,768 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:06:22,771 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:06:22,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:06:22,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:06:22,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:06:22,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:06:22,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:06:22,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:06:22,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:06:22,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:06:22,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:06:22,793 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:06:22,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:06:22,803 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:06:22,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:06:22,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:06:22,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:06:22,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:06:22,810 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:06:22,810 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:06:22,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:06:22,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:06:22,812 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:06:22,813 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:06:22,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:06:22,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:06:22,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:06:22,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:06:22,817 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:06:22,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:06:22,818 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:06:22,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:06:22,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:06:22,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:06:22,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:06:22,821 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 10:06:22,846 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:06:22,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:06:22,848 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:06:22,848 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:06:22,848 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:06:22,849 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:06:22,849 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:06:22,849 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:06:22,849 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:06:22,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:06:22,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:06:22,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:06:22,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:06:22,850 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:06:22,851 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:06:22,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:06:22,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:06:22,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:06:22,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:06:22,852 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:06:22,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:06:22,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:22,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:06:22,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:06:22,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:06:22,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:06:22,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:06:22,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:06:22,854 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:06:22,854 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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-09-25 10:06:23,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:06:23,325 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:06:23,331 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:06:23,333 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:06:23,334 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:06:23,335 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 10:06:23,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5096f2a9/0759900af82144a7b64bcd5ab69f79b9/FLAG3d235763b [2020-09-25 10:06:24,057 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:06:24,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label17.c [2020-09-25 10:06:24,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5096f2a9/0759900af82144a7b64bcd5ab69f79b9/FLAG3d235763b [2020-09-25 10:06:24,310 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e5096f2a9/0759900af82144a7b64bcd5ab69f79b9 [2020-09-25 10:06:24,325 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:06:24,331 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:06:24,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:24,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:06:24,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:06:24,338 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:24" (1/1) ... [2020-09-25 10:06:24,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d1b1e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:24, skipping insertion in model container [2020-09-25 10:06:24,343 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:24" (1/1) ... [2020-09-25 10:06:24,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:06:24,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:06:25,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:25,015 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:06:25,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:25,122 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:06:25,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:25 WrapperNode [2020-09-25 10:06:25,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:25,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:06:25,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:06:25,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:06:25,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:25" (1/1) ... [2020-09-25 10:06:25,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:25" (1/1) ... [2020-09-25 10:06:25,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:25" (1/1) ... [2020-09-25 10:06:25,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:25" (1/1) ... [2020-09-25 10:06:25,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:25" (1/1) ... [2020-09-25 10:06:25,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:25" (1/1) ... [2020-09-25 10:06:25,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:25" (1/1) ... [2020-09-25 10:06:25,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:06:25,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:06:25,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:06:25,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:06:25,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:25,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:06:25,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:06:25,346 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:06:25,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:06:25,346 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:06:25,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:06:25,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:06:25,347 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:06:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:06:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:06:25,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:06:26,751 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:06:26,752 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:06:26,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:26 BoogieIcfgContainer [2020-09-25 10:06:26,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:06:26,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:06:26,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:06:26,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:06:26,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:06:24" (1/3) ... [2020-09-25 10:06:26,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a51e3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:26, skipping insertion in model container [2020-09-25 10:06:26,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:25" (2/3) ... [2020-09-25 10:06:26,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a51e3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:26, skipping insertion in model container [2020-09-25 10:06:26,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:26" (3/3) ... [2020-09-25 10:06:26,772 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2020-09-25 10:06:26,784 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:06:26,799 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:06:26,822 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:06:26,858 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:06:26,859 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:06:26,859 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:06:26,859 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:06:26,859 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:06:26,859 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:06:26,860 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:06:26,860 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:06:26,893 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:06:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-25 10:06:26,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:26,921 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] [2020-09-25 10:06:26,921 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:26,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:26,930 INFO L82 PathProgramCache]: Analyzing trace with hash -1930932209, now seen corresponding path program 1 times [2020-09-25 10:06:26,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:26,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003434291] [2020-09-25 10:06:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:27,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:31,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:32,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:32,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-09-25 10:06:32,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:06:32,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 10:06:32,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:32,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:32,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:06:32,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 10:06:32,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:06:32,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:32,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:32,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:32,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:32,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:32,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 10:06:32,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:32,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:06:32,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:32,588 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 10:06:32,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003434291] [2020-09-25 10:06:32,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:32,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:06:32,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867010881] [2020-09-25 10:06:32,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:06:32,601 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:32,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:06:32,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:06:32,620 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:06:34,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:34,930 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 10:06:34,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:06:34,934 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-09-25 10:06:34,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:34,977 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 10:06:34,977 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 10:06:34,991 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 10:06:35,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 10:06:35,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 10:06:35,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 10:06:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 10:06:35,107 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 144 [2020-09-25 10:06:35,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:35,108 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 10:06:35,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:06:35,113 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 10:06:35,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-25 10:06:35,126 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:35,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:35,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:06:35,128 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:35,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:35,128 INFO L82 PathProgramCache]: Analyzing trace with hash -838420896, now seen corresponding path program 1 times [2020-09-25 10:06:35,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:35,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554446164] [2020-09-25 10:06:35,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:35,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:35,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:36,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:37,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:40,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:40,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-09-25 10:06:40,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:06:40,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 10:06:40,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:40,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 10:06:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 10:06:40,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 10:06:40,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 10:06:40,976 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 40 [2020-09-25 10:06:41,248 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 48 [2020-09-25 10:06:41,533 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 49 [2020-09-25 10:06:41,904 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 49 [2020-09-25 10:06:42,290 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2020-09-25 10:06:42,706 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 49 [2020-09-25 10:06:43,035 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 41 [2020-09-25 10:06:43,343 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 39 [2020-09-25 10:06:43,683 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 39 [2020-09-25 10:06:43,894 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 33 [2020-09-25 10:06:44,087 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 30 [2020-09-25 10:06:44,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:44,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:44,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:44,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:44,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 10:06:44,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:44,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:44,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:44,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 10:06:44,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:44,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:44,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:44,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:44,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:44,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 10:06:44,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 10:06:44,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:44,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:44,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:44,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:44,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:06:44,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:44,905 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:44,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554446164] [2020-09-25 10:06:44,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:44,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-09-25 10:06:44,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296612747] [2020-09-25 10:06:44,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-09-25 10:06:44,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:44,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-09-25 10:06:44,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=415, Unknown=0, NotChecked=0, Total=650 [2020-09-25 10:06:44,910 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 26 states. [2020-09-25 10:06:45,539 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-09-25 10:06:45,802 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-25 10:06:46,013 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 46 [2020-09-25 10:06:46,212 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-25 10:06:46,848 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 10:06:47,206 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-25 10:06:47,864 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-25 10:06:48,089 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-09-25 10:06:48,352 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-25 10:06:48,819 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 116 [2020-09-25 10:06:49,222 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-09-25 10:06:49,501 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-25 10:06:49,890 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-09-25 10:06:50,109 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-25 10:06:50,510 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2020-09-25 10:06:50,777 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-09-25 10:06:51,622 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-09-25 10:06:51,931 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-25 10:06:52,290 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-09-25 10:06:52,691 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-09-25 10:06:52,950 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 10:06:53,650 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-09-25 10:06:53,951 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-09-25 10:06:54,267 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-25 10:06:54,666 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-09-25 10:06:55,271 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-09-25 10:06:55,663 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-09-25 10:06:56,112 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-09-25 10:06:56,777 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-09-25 10:06:57,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:57,440 INFO L93 Difference]: Finished difference Result 2242 states and 2908 transitions. [2020-09-25 10:06:57,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-09-25 10:06:57,443 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 165 [2020-09-25 10:06:57,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:57,453 INFO L225 Difference]: With dead ends: 2242 [2020-09-25 10:06:57,453 INFO L226 Difference]: Without dead ends: 1576 [2020-09-25 10:06:57,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1423, Invalid=2737, Unknown=0, NotChecked=0, Total=4160 [2020-09-25 10:06:57,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-09-25 10:06:57,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1474. [2020-09-25 10:06:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2020-09-25 10:06:57,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 1751 transitions. [2020-09-25 10:06:57,554 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 1751 transitions. Word has length 165 [2020-09-25 10:06:57,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:57,556 INFO L479 AbstractCegarLoop]: Abstraction has 1474 states and 1751 transitions. [2020-09-25 10:06:57,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-09-25 10:06:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 1751 transitions. [2020-09-25 10:06:57,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 10:06:57,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:57,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:06:57,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:06:57,565 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:57,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:57,566 INFO L82 PathProgramCache]: Analyzing trace with hash -302798244, now seen corresponding path program 1 times [2020-09-25 10:06:57,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:57,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901978946] [2020-09-25 10:06:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:57,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:57,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:57,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:58,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:59,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:02,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:02,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 10:07:02,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 10:07:02,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 10:07:02,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:02,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:07:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-09-25 10:07:02,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 10:07:02,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:03,340 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-09-25 10:07:03,564 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2020-09-25 10:07:03,806 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 52 [2020-09-25 10:07:04,054 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 49 [2020-09-25 10:07:04,303 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 45 [2020-09-25 10:07:04,520 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 41 [2020-09-25 10:07:04,721 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 35 [2020-09-25 10:07:04,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:07:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:04,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:04,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:07:04,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:04,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:07:04,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:04,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:04,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:04,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:04,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:04,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:04,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:07:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:04,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:04,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:04,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 10:07:04,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:04,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 10:07:04,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:04,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:07:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:04,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:07:04,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:04,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 10:07:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:04,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:04,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:07:04,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 10:07:04,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:07:04,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 10:07:04,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:07:04,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:07:04,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:07:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:07:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 10:07:04,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:07:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 10:07:05,410 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901978946] [2020-09-25 10:07:05,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:07:05,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:07:05,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994519637] [2020-09-25 10:07:05,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:07:05,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:07:05,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:07:05,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:07:05,413 INFO L87 Difference]: Start difference. First operand 1474 states and 1751 transitions. Second operand 15 states. [2020-09-25 10:07:06,059 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-09-25 10:07:06,291 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-09-25 10:07:07,008 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 114 [2020-09-25 10:07:08,453 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 111 [2020-09-25 10:07:09,092 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 108 [2020-09-25 10:07:09,653 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 105 [2020-09-25 10:07:09,949 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 100 [2020-09-25 10:07:10,332 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 10:07:10,583 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 10:07:10,836 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 10:07:10,969 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-25 10:07:11,147 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-09-25 10:07:12,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:07:12,289 INFO L93 Difference]: Finished difference Result 3421 states and 4267 transitions. [2020-09-25 10:07:12,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 10:07:12,290 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 189 [2020-09-25 10:07:12,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:07:12,309 INFO L225 Difference]: With dead ends: 3421 [2020-09-25 10:07:12,309 INFO L226 Difference]: Without dead ends: 1971 [2020-09-25 10:07:12,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=264, Invalid=548, Unknown=0, NotChecked=0, Total=812 [2020-09-25 10:07:12,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1971 states. [2020-09-25 10:07:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1971 to 1920. [2020-09-25 10:07:12,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1920 states. [2020-09-25 10:07:12,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2250 transitions. [2020-09-25 10:07:12,398 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2250 transitions. Word has length 189 [2020-09-25 10:07:12,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:07:12,400 INFO L479 AbstractCegarLoop]: Abstraction has 1920 states and 2250 transitions. [2020-09-25 10:07:12,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:07:12,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2250 transitions. [2020-09-25 10:07:12,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 10:07:12,409 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:07:12,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:07:12,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:07:12,409 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:07:12,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:07:12,410 INFO L82 PathProgramCache]: Analyzing trace with hash -310655631, now seen corresponding path program 1 times [2020-09-25 10:07:12,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:07:12,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219979836] [2020-09-25 10:07:12,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:07:12,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:07:12,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:12,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:12,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:07:13,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking...