/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=0.5 --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_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:37:40,855 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:37:40,859 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:37:40,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:37:40,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:37:40,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:37:40,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:37:40,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:37:40,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:37:40,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:37:40,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:37:40,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:37:40,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:37:40,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:37:40,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:37:40,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:37:40,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:37:40,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:37:40,908 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:37:40,911 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:37:40,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:37:40,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:37:40,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:37:40,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:37:40,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:37:40,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:37:40,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:37:40,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:37:40,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:37:40,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:37:40,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:37:40,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:37:40,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:37:40,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:37:40,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:37:40,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:37:40,938 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:37:40,939 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:37:40,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:37:40,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:37:40,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:37:40,943 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 14:37:41,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:37:41,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:37:41,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:37:41,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:37:41,008 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:37:41,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:37:41,009 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:37:41,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:37:41,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:37:41,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:37:41,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:37:41,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:37:41,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:37:41,010 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:37:41,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:37:41,011 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:37:41,012 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:37:41,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:37:41,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:37:41,012 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:37:41,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:37:41,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:41,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:37:41,013 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:37:41,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:37:41,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:37:41,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:37:41,014 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:37:41,014 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:37:41,014 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:37:41,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:37:41,538 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:37:41,542 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:37:41,544 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:37:41,544 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:37:41,546 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label49.c [2020-09-25 14:37:41,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09147da29/1dac75f87d104c89b795329b8f5f818a/FLAG549e5dfbe [2020-09-25 14:37:42,311 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:37:42,312 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label49.c [2020-09-25 14:37:42,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09147da29/1dac75f87d104c89b795329b8f5f818a/FLAG549e5dfbe [2020-09-25 14:37:42,505 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/09147da29/1dac75f87d104c89b795329b8f5f818a [2020-09-25 14:37:42,517 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:37:42,523 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:37:42,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:42,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:37:42,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:37:42,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:42" (1/1) ... [2020-09-25 14:37:42,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:42, skipping insertion in model container [2020-09-25 14:37:42,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:42" (1/1) ... [2020-09-25 14:37:42,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:37:42,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:37:43,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:43,084 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:37:43,320 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:43,341 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:37:43,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:43 WrapperNode [2020-09-25 14:37:43,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:43,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:37:43,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:37:43,343 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:37:43,360 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:43" (1/1) ... [2020-09-25 14:37:43,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:43" (1/1) ... [2020-09-25 14:37:43,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:43" (1/1) ... [2020-09-25 14:37:43,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:43" (1/1) ... [2020-09-25 14:37:43,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:43" (1/1) ... [2020-09-25 14:37:43,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:43" (1/1) ... [2020-09-25 14:37:43,446 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:43" (1/1) ... [2020-09-25 14:37:43,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:37:43,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:37:43,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:37:43,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:37:43,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:43" (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 14:37:43,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:37:43,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:37:43,533 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:37:43,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:37:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:37:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:37:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:37:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:37:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:37:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:37:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:37:45,030 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:37:45,031 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:37:45,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:45 BoogieIcfgContainer [2020-09-25 14:37:45,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:37:45,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:37:45,050 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:37:45,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:37:45,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:37:42" (1/3) ... [2020-09-25 14:37:45,056 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:45, skipping insertion in model container [2020-09-25 14:37:45,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:43" (2/3) ... [2020-09-25 14:37:45,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e9e9bc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:45, skipping insertion in model container [2020-09-25 14:37:45,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:45" (3/3) ... [2020-09-25 14:37:45,060 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label49.c [2020-09-25 14:37:45,072 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:37:45,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:37:45,111 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:37:45,152 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:37:45,153 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:37:45,153 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:37:45,153 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:37:45,154 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:37:45,154 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:37:45,154 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:37:45,154 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:37:45,195 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:37:45,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-09-25 14:37:45,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:45,236 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] [2020-09-25 14:37:45,237 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:45,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:45,244 INFO L82 PathProgramCache]: Analyzing trace with hash 2140935381, now seen corresponding path program 1 times [2020-09-25 14:37:45,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:45,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251981973] [2020-09-25 14:37:45,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:45,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:46,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:46,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:48,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:49,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:50,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:50,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 14:37:50,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:37:50,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 14:37:50,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:50,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:37:50,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 14:37:50,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:37:50,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:50,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:50,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:50,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:50,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:50,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 14:37:50,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:50,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:50,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:50,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:37:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:50,942 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 14:37:50,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251981973] [2020-09-25 14:37:50,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:37:50,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:37:50,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401109867] [2020-09-25 14:37:50,954 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:37:50,954 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:50,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:37:50,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:37:50,976 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:37:53,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:37:53,081 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 14:37:53,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:37:53,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-09-25 14:37:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:37:53,127 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 14:37:53,128 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 14:37:53,136 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 14:37:53,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 14:37:53,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 14:37:53,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:37:53,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 14:37:53,239 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 135 [2020-09-25 14:37:53,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:37:53,240 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 14:37:53,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:37:53,240 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 14:37:53,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-25 14:37:53,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:53,247 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] [2020-09-25 14:37:53,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:37:53,247 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:53,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:53,248 INFO L82 PathProgramCache]: Analyzing trace with hash 189734756, now seen corresponding path program 1 times [2020-09-25 14:37:53,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:53,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665895644] [2020-09-25 14:37:53,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:53,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:56,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:58,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-25 14:37:58,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:37:58,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 14:37:58,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:58,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:37:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 14:37:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 14:37:58,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:58,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:58,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:58,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:58,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:58,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:37:58,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:58,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:37:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:58,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:37:58,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 14:37:58,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:37:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:58,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:58,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:37:58,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:58,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:37:58,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:58,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:58,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:37:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:58,625 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 14:37:58,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665895644] [2020-09-25 14:37:58,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:37:58,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:37:58,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666011159] [2020-09-25 14:37:58,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:37:58,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:58,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:37:58,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:37:58,632 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 5 states. [2020-09-25 14:38:00,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:00,997 INFO L93 Difference]: Finished difference Result 1555 states and 1922 transitions. [2020-09-25 14:38:00,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:00,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-09-25 14:38:01,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:01,006 INFO L225 Difference]: With dead ends: 1555 [2020-09-25 14:38:01,006 INFO L226 Difference]: Without dead ends: 976 [2020-09-25 14:38:01,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:38:01,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2020-09-25 14:38:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 891. [2020-09-25 14:38:01,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 891 states. [2020-09-25 14:38:01,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1078 transitions. [2020-09-25 14:38:01,069 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1078 transitions. Word has length 156 [2020-09-25 14:38:01,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:01,070 INFO L479 AbstractCegarLoop]: Abstraction has 891 states and 1078 transitions. [2020-09-25 14:38:01,070 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:01,071 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1078 transitions. [2020-09-25 14:38:01,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 14:38:01,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:01,076 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 14:38:01,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:38:01,077 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:01,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:01,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1694188795, now seen corresponding path program 1 times [2020-09-25 14:38:01,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:01,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178980637] [2020-09-25 14:38:01,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:01,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:02,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:02,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:06,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 14:38:06,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:38:06,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 14:38:06,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:06,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-25 14:38:06,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 14:38:06,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:06,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:06,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:06,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:06,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:06,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:06,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:06,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:06,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:06,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:06,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:06,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:06,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:38:06,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:06,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 14:38:06,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:06,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:06,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:06,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:06,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 14:38:06,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:06,417 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:06,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178980637] [2020-09-25 14:38:06,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:06,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:06,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627798146] [2020-09-25 14:38:06,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:06,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:06,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:06,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:06,421 INFO L87 Difference]: Start difference. First operand 891 states and 1078 transitions. Second operand 5 states. [2020-09-25 14:38:08,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:08,350 INFO L93 Difference]: Finished difference Result 2096 states and 2615 transitions. [2020-09-25 14:38:08,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:08,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-09-25 14:38:08,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:08,363 INFO L225 Difference]: With dead ends: 2096 [2020-09-25 14:38:08,364 INFO L226 Difference]: Without dead ends: 1229 [2020-09-25 14:38:08,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 14:38:08,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2020-09-25 14:38:08,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1177. [2020-09-25 14:38:08,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2020-09-25 14:38:08,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1440 transitions. [2020-09-25 14:38:08,433 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1440 transitions. Word has length 163 [2020-09-25 14:38:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:08,433 INFO L479 AbstractCegarLoop]: Abstraction has 1177 states and 1440 transitions. [2020-09-25 14:38:08,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:08,436 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1440 transitions. [2020-09-25 14:38:08,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-09-25 14:38:08,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:08,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:38:08,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:38:08,444 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:08,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:08,445 INFO L82 PathProgramCache]: Analyzing trace with hash 2085014698, now seen corresponding path program 1 times [2020-09-25 14:38:08,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:08,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359945209] [2020-09-25 14:38:08,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:08,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:08,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:10,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:13,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-09-25 14:38:13,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:38:13,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 14:38:13,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:13,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 14:38:13,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 14:38:13,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:13,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:13,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:13,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:13,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:13,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:13,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:13,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:13,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:13,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:13,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:13,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:13,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:13,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:38:13,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:13,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:38:13,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:13,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:13,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:13,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:13,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:38:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:13,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:13,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:13,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 14:38:13,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:13,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 14:38:13,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:13,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 14:38:13,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 14:38:13,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359945209] [2020-09-25 14:38:13,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:13,787 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:13,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865657756] [2020-09-25 14:38:13,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:13,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:13,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:13,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:13,789 INFO L87 Difference]: Start difference. First operand 1177 states and 1440 transitions. Second operand 5 states. [2020-09-25 14:38:16,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:16,033 INFO L93 Difference]: Finished difference Result 3315 states and 4188 transitions. [2020-09-25 14:38:16,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:16,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 189 [2020-09-25 14:38:16,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:16,063 INFO L225 Difference]: With dead ends: 3315 [2020-09-25 14:38:16,063 INFO L226 Difference]: Without dead ends: 2162 [2020-09-25 14:38:16,069 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 14:38:16,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2162 states. [2020-09-25 14:38:16,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2162 to 2045. [2020-09-25 14:38:16,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2045 states. [2020-09-25 14:38:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2551 transitions. [2020-09-25 14:38:16,162 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2551 transitions. Word has length 189 [2020-09-25 14:38:16,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:16,163 INFO L479 AbstractCegarLoop]: Abstraction has 2045 states and 2551 transitions. [2020-09-25 14:38:16,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:16,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2551 transitions. [2020-09-25 14:38:16,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-09-25 14:38:16,178 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:16,179 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 14:38:16,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:38:16,179 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:16,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:16,180 INFO L82 PathProgramCache]: Analyzing trace with hash 691253393, now seen corresponding path program 1 times [2020-09-25 14:38:16,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:16,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504548581] [2020-09-25 14:38:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:17,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:21,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 281 [2020-09-25 14:38:21,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:38:21,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5163 [2020-09-25 14:38:21,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:21,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:38:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 14:38:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-09-25 14:38:21,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:21,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:21,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:21,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:21,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:21,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:21,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:21,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:21,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:21,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:21,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:21,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:21,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:38:21,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:21,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 14:38:21,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:21,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:21,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:21,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:21,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 14:38:21,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:21,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 14:38:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:21,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:21,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 14:38:21,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:38:21,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 14:38:21,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:21,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:38:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:21,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 14:38:21,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:22,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-25 14:38:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:22,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:22,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:22,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:22,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 14:38:22,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:38:22,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 527 [2020-09-25 14:38:22,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:22,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:38:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:22,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 14:38:22,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 132 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 14:38:23,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504548581] [2020-09-25 14:38:23,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:23,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:38:23,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420414896] [2020-09-25 14:38:23,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:38:23,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:23,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:38:23,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:38:23,384 INFO L87 Difference]: Start difference. First operand 2045 states and 2551 transitions. Second operand 12 states.