/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --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_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:25:49,326 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:25:49,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:25:49,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:25:49,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:25:49,360 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:25:49,361 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:25:49,363 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:25:49,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:25:49,366 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:25:49,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:25:49,368 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:25:49,368 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:25:49,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:25:49,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:25:49,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:25:49,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:25:49,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:25:49,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:25:49,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:25:49,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:25:49,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:25:49,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:25:49,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:25:49,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:25:49,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:25:49,385 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:25:49,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:25:49,386 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:25:49,387 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:25:49,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:25:49,388 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:25:49,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:25:49,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:25:49,391 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:25:49,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:25:49,392 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:25:49,392 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:25:49,392 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:25:49,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:25:49,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:25:49,395 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 04:25:49,421 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:25:49,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:25:49,423 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:25:49,423 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:25:49,423 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:25:49,423 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:25:49,424 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:25:49,424 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:25:49,424 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:25:49,424 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:25:49,424 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:25:49,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:25:49,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:25:49,425 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:25:49,425 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:25:49,425 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:25:49,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:25:49,426 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:25:49,426 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:25:49,426 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:25:49,426 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:25:49,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:25:49,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:25:49,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:25:49,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:25:49,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:25:49,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:25:49,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:25:49,428 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:25:49,428 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:25:49,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:25:49,912 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:25:49,917 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:25:49,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:25:49,919 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:25:49,920 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 04:25:50,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98850253d/15a951fe6673462ea00b0d8ee1beee52/FLAG11ac14ab9 [2020-09-25 04:25:50,704 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:25:50,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 04:25:50,721 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98850253d/15a951fe6673462ea00b0d8ee1beee52/FLAG11ac14ab9 [2020-09-25 04:25:50,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/98850253d/15a951fe6673462ea00b0d8ee1beee52 [2020-09-25 04:25:50,939 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:25:50,946 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:25:50,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:50,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:25:50,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:25:50,953 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:50" (1/1) ... [2020-09-25 04:25:50,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:50, skipping insertion in model container [2020-09-25 04:25:50,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:25:50" (1/1) ... [2020-09-25 04:25:50,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:25:51,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:25:51,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:51,539 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:25:51,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:25:51,795 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:25:51,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:51 WrapperNode [2020-09-25 04:25:51,796 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:25:51,797 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:25:51,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:25:51,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:25:51,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:51" (1/1) ... [2020-09-25 04:25:51,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:51" (1/1) ... [2020-09-25 04:25:51,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:51" (1/1) ... [2020-09-25 04:25:51,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:51" (1/1) ... [2020-09-25 04:25:51,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:51" (1/1) ... [2020-09-25 04:25:51,910 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:51" (1/1) ... [2020-09-25 04:25:51,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:51" (1/1) ... [2020-09-25 04:25:51,930 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:25:51,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:25:51,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:25:51,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:25:51,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:51" (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 04:25:52,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:25:52,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:25:52,060 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:25:52,061 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:25:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:25:52,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:25:52,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:25:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:25:52,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:25:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:25:52,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:25:53,955 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:25:53,956 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:25:53,971 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:53 BoogieIcfgContainer [2020-09-25 04:25:53,972 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:25:53,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:25:53,976 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:25:53,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:25:53,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:25:50" (1/3) ... [2020-09-25 04:25:53,981 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:53, skipping insertion in model container [2020-09-25 04:25:53,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:25:51" (2/3) ... [2020-09-25 04:25:53,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fc3148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:25:53, skipping insertion in model container [2020-09-25 04:25:53,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:25:53" (3/3) ... [2020-09-25 04:25:53,985 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2020-09-25 04:25:53,998 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:25:54,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:25:54,039 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:25:54,079 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:25:54,080 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:25:54,080 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:25:54,080 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:25:54,080 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:25:54,081 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:25:54,081 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:25:54,081 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:25:54,125 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 04:25:54,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 04:25:54,162 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:25:54,164 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:25:54,165 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:25:54,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:25:54,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1583508727, now seen corresponding path program 1 times [2020-09-25 04:25:54,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:25:54,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078676588] [2020-09-25 04:25:54,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:25:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:54,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:54,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:55,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:56,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:56,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:57,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:59,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:59,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:59,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:59,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 04:25:59,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:25:59,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-09-25 04:25:59,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:59,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:25:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:25:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 04:25:59,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:25:59,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:25:59,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:25:59,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:25:59,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:25:59,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:25:59,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:25:59,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 04:25:59,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:25:59,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:25:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:25:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:25:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:25:59,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:25:59,925 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 04:25:59,927 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078676588] [2020-09-25 04:25:59,929 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:25:59,929 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:25:59,930 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060247867] [2020-09-25 04:25:59,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:25:59,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:25:59,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:25:59,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:25:59,959 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 04:26:02,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:02,389 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 04:26:02,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:26:02,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 04:26:02,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:02,437 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 04:26:02,437 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 04:26:02,450 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 04:26:02,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 04:26:02,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 04:26:02,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 04:26:02,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 04:26:02,628 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 154 [2020-09-25 04:26:02,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:02,632 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 04:26:02,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:26:02,633 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 04:26:02,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 04:26:02,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:02,645 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:02,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:26:02,646 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:02,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:02,646 INFO L82 PathProgramCache]: Analyzing trace with hash -81177825, now seen corresponding path program 1 times [2020-09-25 04:26:02,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:02,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786061122] [2020-09-25 04:26:02,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:02,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:03,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:04,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:05,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:07,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:07,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 04:26:07,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:26:07,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 04:26:07,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:07,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:07,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 04:26:07,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:26:07,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:26:07,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:07,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:07,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:07,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:07,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:07,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:07,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:26:07,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:07,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:07,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:07,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:07,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 04:26:07,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 04:26:07,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:07,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:07,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:07,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:07,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:07,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 04:26:07,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:07,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:07,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:07,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:07,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 04:26:07,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:08,040 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:08,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786061122] [2020-09-25 04:26:08,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:08,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:26:08,042 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104287818] [2020-09-25 04:26:08,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:08,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:08,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:08,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:08,049 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 7 states. [2020-09-25 04:26:10,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:10,634 INFO L93 Difference]: Finished difference Result 1660 states and 2153 transitions. [2020-09-25 04:26:10,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:26:10,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2020-09-25 04:26:10,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:10,649 INFO L225 Difference]: With dead ends: 1660 [2020-09-25 04:26:10,649 INFO L226 Difference]: Without dead ends: 1081 [2020-09-25 04:26:10,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:26:10,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-09-25 04:26:10,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 906. [2020-09-25 04:26:10,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 906 states. [2020-09-25 04:26:10,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 906 states to 906 states and 1105 transitions. [2020-09-25 04:26:10,731 INFO L78 Accepts]: Start accepts. Automaton has 906 states and 1105 transitions. Word has length 175 [2020-09-25 04:26:10,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:10,731 INFO L479 AbstractCegarLoop]: Abstraction has 906 states and 1105 transitions. [2020-09-25 04:26:10,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:10,732 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states and 1105 transitions. [2020-09-25 04:26:10,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 04:26:10,737 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:10,738 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, 1, 1, 1, 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 04:26:10,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:26:10,738 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:10,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:10,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1469093243, now seen corresponding path program 1 times [2020-09-25 04:26:10,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:10,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701265048] [2020-09-25 04:26:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:10,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:10,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:12,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:13,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:14,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:15,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 04:26:15,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:26:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 04:26:15,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:15,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:15,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:26:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:26:15,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:26:15,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:15,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:15,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:15,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:15,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:15,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:15,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 04:26:15,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:15,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:15,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:15,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:26:15,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:15,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:15,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:16,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:16,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 04:26:16,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:16,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 04:26:16,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:16,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:16,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:16,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:26:16,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:26:16,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701265048] [2020-09-25 04:26:16,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:26:16,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:26:16,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588728914] [2020-09-25 04:26:16,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:16,075 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:16,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:16,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:16,076 INFO L87 Difference]: Start difference. First operand 906 states and 1105 transitions. Second operand 7 states. [2020-09-25 04:26:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:18,830 INFO L93 Difference]: Finished difference Result 2571 states and 3282 transitions. [2020-09-25 04:26:18,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:26:18,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 04:26:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:18,843 INFO L225 Difference]: With dead ends: 2571 [2020-09-25 04:26:18,843 INFO L226 Difference]: Without dead ends: 1689 [2020-09-25 04:26:18,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:26:18,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1689 states. [2020-09-25 04:26:18,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1689 to 1566. [2020-09-25 04:26:18,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1566 states. [2020-09-25 04:26:18,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1566 states to 1566 states and 1934 transitions. [2020-09-25 04:26:18,908 INFO L78 Accepts]: Start accepts. Automaton has 1566 states and 1934 transitions. Word has length 176 [2020-09-25 04:26:18,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:18,909 INFO L479 AbstractCegarLoop]: Abstraction has 1566 states and 1934 transitions. [2020-09-25 04:26:18,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1566 states and 1934 transitions. [2020-09-25 04:26:18,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 04:26:18,917 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:18,918 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:18,919 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:26:18,919 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:18,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:18,920 INFO L82 PathProgramCache]: Analyzing trace with hash -231794110, now seen corresponding path program 1 times [2020-09-25 04:26:18,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:18,920 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952655410] [2020-09-25 04:26:18,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:19,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:19,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:20,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:21,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:23,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:23,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 04:26:23,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:26:23,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 04:26:23,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:23,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:23,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:26:23,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 04:26:23,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 04:26:23,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:24,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:24,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:24,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:24,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:24,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 04:26:24,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:24,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:24,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:24,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 04:26:24,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:24,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:24,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:24,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:24,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:24,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:26:24,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:26:24,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 04:26:24,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:24,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:24,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:24,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:26:24,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 04:26:24,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952655410] [2020-09-25 04:26:24,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:24,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:26:24,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148636223] [2020-09-25 04:26:24,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:26:24,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:24,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:26:24,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:26:24,371 INFO L87 Difference]: Start difference. First operand 1566 states and 1934 transitions. Second operand 5 states. [2020-09-25 04:26:26,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:26,121 INFO L93 Difference]: Finished difference Result 4138 states and 5281 transitions. [2020-09-25 04:26:26,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:26:26,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 183 [2020-09-25 04:26:26,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:26,139 INFO L225 Difference]: With dead ends: 4138 [2020-09-25 04:26:26,139 INFO L226 Difference]: Without dead ends: 2596 [2020-09-25 04:26:26,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 04:26:26,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2596 states. [2020-09-25 04:26:26,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2596 to 2420. [2020-09-25 04:26:26,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2420 states. [2020-09-25 04:26:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 3057 transitions. [2020-09-25 04:26:26,236 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 3057 transitions. Word has length 183 [2020-09-25 04:26:26,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:26,237 INFO L479 AbstractCegarLoop]: Abstraction has 2420 states and 3057 transitions. [2020-09-25 04:26:26,237 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:26:26,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 3057 transitions. [2020-09-25 04:26:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 04:26:26,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:26,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:26:26,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:26:26,252 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:26,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:26,252 INFO L82 PathProgramCache]: Analyzing trace with hash -422908273, now seen corresponding path program 1 times [2020-09-25 04:26:26,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:26,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1960128203] [2020-09-25 04:26:26,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:26,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:26,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:26,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:26,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:27,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:28,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:29,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:31,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-09-25 04:26:31,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 04:26:31,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 04:26:31,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:31,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 04:26:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 04:26:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:26:31,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:31,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:31,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:26:31,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:31,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:26:31,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:31,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:31,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:26:31,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:31,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:26:31,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:31,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 04:26:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:31,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 04:26:31,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:31,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:26:31,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:31,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:26:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:26:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:26:31,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:31,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 04:26:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:31,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:31,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:26:31,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 04:26:31,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:26:31,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 04:26:31,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:26:31,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:26:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:26:31,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:26:31,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 04:26:31,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:26:31,734 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:26:31,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1960128203] [2020-09-25 04:26:31,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:26:31,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:26:31,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720090186] [2020-09-25 04:26:31,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:26:31,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:26:31,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:26:31,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:26:31,738 INFO L87 Difference]: Start difference. First operand 2420 states and 3057 transitions. Second operand 7 states. [2020-09-25 04:26:35,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:26:35,529 INFO L93 Difference]: Finished difference Result 6610 states and 8946 transitions. [2020-09-25 04:26:35,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:26:35,530 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-09-25 04:26:35,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:26:35,560 INFO L225 Difference]: With dead ends: 6610 [2020-09-25 04:26:35,560 INFO L226 Difference]: Without dead ends: 4214 [2020-09-25 04:26:35,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:26:35,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4214 states. [2020-09-25 04:26:35,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4214 to 3672. [2020-09-25 04:26:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3672 states. [2020-09-25 04:26:35,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3672 states to 3672 states and 4574 transitions. [2020-09-25 04:26:35,701 INFO L78 Accepts]: Start accepts. Automaton has 3672 states and 4574 transitions. Word has length 205 [2020-09-25 04:26:35,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:26:35,701 INFO L479 AbstractCegarLoop]: Abstraction has 3672 states and 4574 transitions. [2020-09-25 04:26:35,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:26:35,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3672 states and 4574 transitions. [2020-09-25 04:26:35,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-25 04:26:35,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:26:35,718 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:26:35,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:26:35,719 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:26:35,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:26:35,719 INFO L82 PathProgramCache]: Analyzing trace with hash -102390325, now seen corresponding path program 1 times [2020-09-25 04:26:35,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:26:35,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154874962] [2020-09-25 04:26:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:26:35,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:26:35,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:35,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:26:36,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking...