/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=0.4 --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_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:34:33,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:34:33,244 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:34:33,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:34:33,290 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:34:33,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:34:33,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:34:33,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:34:33,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:34:33,311 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:34:33,312 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:34:33,313 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:34:33,313 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:34:33,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:34:33,319 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:34:33,321 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:34:33,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:34:33,325 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:34:33,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:34:33,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:34:33,340 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:34:33,341 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:34:33,342 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:34:33,343 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:34:33,355 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:34:33,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:34:33,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:34:33,362 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:34:33,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:34:33,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:34:33,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:34:33,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:34:33,367 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:34:33,372 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:34:33,376 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:34:33,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:34:33,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:34:33,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:34:33,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:34:33,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:34:33,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:34:33,380 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 05:34:33,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:34:33,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:34:33,431 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:34:33,431 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:34:33,431 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:34:33,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:34:33,432 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:34:33,432 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:34:33,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:34:33,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:34:33,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:34:33,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:34:33,434 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:34:33,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:34:33,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:34:33,435 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:34:33,435 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:34:33,435 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:34:33,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:34:33,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:34:33,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:34:33,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:34:33,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:34:33,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:34:33,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:34:33,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:34:33,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:34:33,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:34:33,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:34:33,438 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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-09-25 05:34:33,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:34:33,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:34:33,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:34:33,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:34:33,916 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:34:33,918 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 05:34:33,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4965d8ac7/73836cc6c8b04bbe96f3ee1b5bbb865d/FLAG721635066 [2020-09-25 05:34:34,733 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:34:34,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label55.c [2020-09-25 05:34:34,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4965d8ac7/73836cc6c8b04bbe96f3ee1b5bbb865d/FLAG721635066 [2020-09-25 05:34:34,909 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4965d8ac7/73836cc6c8b04bbe96f3ee1b5bbb865d [2020-09-25 05:34:34,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:34:34,931 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:34:34,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:34,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:34:34,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:34:34,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:34" (1/1) ... [2020-09-25 05:34:34,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff870af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:34, skipping insertion in model container [2020-09-25 05:34:34,948 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:34:34" (1/1) ... [2020-09-25 05:34:34,957 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:34:35,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:34:35,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:35,590 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:34:35,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:34:35,731 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:34:35,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:35 WrapperNode [2020-09-25 05:34:35,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:34:35,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:34:35,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:34:35,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:34:35,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:35" (1/1) ... [2020-09-25 05:34:35,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:35" (1/1) ... [2020-09-25 05:34:35,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:35" (1/1) ... [2020-09-25 05:34:35,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:35" (1/1) ... [2020-09-25 05:34:35,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:35" (1/1) ... [2020-09-25 05:34:35,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:35" (1/1) ... [2020-09-25 05:34:35,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:35" (1/1) ... [2020-09-25 05:34:35,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:34:35,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:34:35,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:34:35,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:34:35,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:35" (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 05:34:35,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:34:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:34:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:34:35,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:34:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:34:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:34:35,945 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:34:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:34:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:34:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:34:35,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:34:37,256 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:34:37,256 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:34:37,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:37 BoogieIcfgContainer [2020-09-25 05:34:37,266 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:34:37,268 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:34:37,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:34:37,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:34:37,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:34:34" (1/3) ... [2020-09-25 05:34:37,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6507a7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:37, skipping insertion in model container [2020-09-25 05:34:37,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:34:35" (2/3) ... [2020-09-25 05:34:37,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6507a7e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:34:37, skipping insertion in model container [2020-09-25 05:34:37,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:34:37" (3/3) ... [2020-09-25 05:34:37,276 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label55.c [2020-09-25 05:34:37,288 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:34:37,300 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:34:37,323 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:34:37,360 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:34:37,360 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:34:37,360 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:34:37,360 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:34:37,360 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:34:37,361 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:34:37,361 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:34:37,361 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:34:37,395 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 05:34:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 05:34:37,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:37,419 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] [2020-09-25 05:34:37,420 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:37,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:37,428 INFO L82 PathProgramCache]: Analyzing trace with hash -2144769179, now seen corresponding path program 1 times [2020-09-25 05:34:37,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:37,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068062029] [2020-09-25 05:34:37,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:37,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:38,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:38,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:42,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:42,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:42,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 05:34:42,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:34:42,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-09-25 05:34:42,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:42,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 05:34:42,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 05:34:42,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 05:34:43,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:43,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:43,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:43,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:43,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:43,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:43,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 05:34:43,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:43,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:43,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:43,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:43,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 05:34:43,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:43,135 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 05:34:43,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068062029] [2020-09-25 05:34:43,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:43,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 05:34:43,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553203854] [2020-09-25 05:34:43,146 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:43,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:43,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:43,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:43,173 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 05:34:45,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:45,359 INFO L93 Difference]: Finished difference Result 1270 states and 1669 transitions. [2020-09-25 05:34:45,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:34:45,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 05:34:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:45,387 INFO L225 Difference]: With dead ends: 1270 [2020-09-25 05:34:45,387 INFO L226 Difference]: Without dead ends: 696 [2020-09-25 05:34:45,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 05:34:45,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2020-09-25 05:34:45,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 603. [2020-09-25 05:34:45,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 05:34:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 731 transitions. [2020-09-25 05:34:45,511 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 731 transitions. Word has length 139 [2020-09-25 05:34:45,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:45,512 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 731 transitions. [2020-09-25 05:34:45,512 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:45,512 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 731 transitions. [2020-09-25 05:34:45,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-09-25 05:34:45,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:45,521 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] [2020-09-25 05:34:45,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:34:45,522 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:45,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:45,522 INFO L82 PathProgramCache]: Analyzing trace with hash 473875351, now seen corresponding path program 1 times [2020-09-25 05:34:45,523 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:45,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900451940] [2020-09-25 05:34:45,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:45,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:47,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:48,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:50,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:50,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-09-25 05:34:50,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 05:34:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-25 05:34:50,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:50,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:50,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:50,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 05:34:50,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 05:34:50,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 05:34:50,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:50,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:50,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:50,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:50,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:50,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:34:50,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:50,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:34:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:50,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:34:50,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 05:34:50,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:50,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:50,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:34:50,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:50,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 05:34:50,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:50,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:50,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:34:50,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:50,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900451940] [2020-09-25 05:34:50,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:34:50,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 05:34:50,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666429720] [2020-09-25 05:34:50,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 05:34:50,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:50,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 05:34:50,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:34:50,894 INFO L87 Difference]: Start difference. First operand 603 states and 731 transitions. Second operand 5 states. [2020-09-25 05:34:53,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:34:53,345 INFO L93 Difference]: Finished difference Result 1597 states and 2001 transitions. [2020-09-25 05:34:53,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 05:34:53,347 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-09-25 05:34:53,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:34:53,359 INFO L225 Difference]: With dead ends: 1597 [2020-09-25 05:34:53,360 INFO L226 Difference]: Without dead ends: 1018 [2020-09-25 05:34:53,363 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 05:34:53,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2020-09-25 05:34:53,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 758. [2020-09-25 05:34:53,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 758 states. [2020-09-25 05:34:53,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 933 transitions. [2020-09-25 05:34:53,431 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 933 transitions. Word has length 161 [2020-09-25 05:34:53,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:34:53,431 INFO L479 AbstractCegarLoop]: Abstraction has 758 states and 933 transitions. [2020-09-25 05:34:53,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 05:34:53,432 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 933 transitions. [2020-09-25 05:34:53,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 05:34:53,437 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:34:53,437 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:34:53,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:34:53,438 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:34:53,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:34:53,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1701451615, now seen corresponding path program 1 times [2020-09-25 05:34:53,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:34:53,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1727685149] [2020-09-25 05:34:53,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:34:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:53,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:53,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:54,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:55,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:56,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:57,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:58,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 05:34:58,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:34:58,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:34:58,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:58,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:58,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:34:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 05:34:58,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 05:34:58,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:58,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:34:58,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:58,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:58,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:34:58,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 05:34:58,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:58,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:34:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:34:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 05:34:58,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:58,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:34:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:34:58,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:34:58,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:34:58,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 05:34:58,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:34:58,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-25 05:34:58,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:34:58,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:34:58,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:34:58,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:34:58,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 05:34:58,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:34:58,813 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:34:58,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1727685149] [2020-09-25 05:34:58,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:34:58,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:34:58,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431114026] [2020-09-25 05:34:58,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:34:58,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:34:58,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:34:58,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:34:58,819 INFO L87 Difference]: Start difference. First operand 758 states and 933 transitions. Second operand 7 states. [2020-09-25 05:35:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:01,302 INFO L93 Difference]: Finished difference Result 1633 states and 2009 transitions. [2020-09-25 05:35:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 05:35:01,302 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2020-09-25 05:35:01,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:01,313 INFO L225 Difference]: With dead ends: 1633 [2020-09-25 05:35:01,313 INFO L226 Difference]: Without dead ends: 899 [2020-09-25 05:35:01,317 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 05:35:01,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 899 states. [2020-09-25 05:35:01,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 899 to 812. [2020-09-25 05:35:01,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2020-09-25 05:35:01,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 948 transitions. [2020-09-25 05:35:01,345 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 948 transitions. Word has length 176 [2020-09-25 05:35:01,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:01,346 INFO L479 AbstractCegarLoop]: Abstraction has 812 states and 948 transitions. [2020-09-25 05:35:01,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:35:01,346 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 948 transitions. [2020-09-25 05:35:01,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 05:35:01,350 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:01,350 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:01,351 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:35:01,351 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:01,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:01,351 INFO L82 PathProgramCache]: Analyzing trace with hash 1190688682, now seen corresponding path program 1 times [2020-09-25 05:35:01,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:01,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1247185313] [2020-09-25 05:35:01,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:01,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:01,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:01,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:06,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-09-25 05:35:06,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:35:06,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-09-25 05:35:06,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:06,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:06,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:35:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 05:35:06,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 05:35:06,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:06,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:06,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:06,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 05:35:06,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:06,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:06,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:06,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 05:35:06,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:06,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:06,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:06,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:06,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 05:35:06,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:06,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-09-25 05:35:06,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:06,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:06,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:06,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 05:35:06,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:35:06,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1247185313] [2020-09-25 05:35:06,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:35:06,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 05:35:06,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816403814] [2020-09-25 05:35:06,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:35:06,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:06,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:35:06,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:35:06,981 INFO L87 Difference]: Start difference. First operand 812 states and 948 transitions. Second operand 8 states. [2020-09-25 05:35:09,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:09,757 INFO L93 Difference]: Finished difference Result 2545 states and 3134 transitions. [2020-09-25 05:35:09,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 05:35:09,758 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2020-09-25 05:35:09,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:09,770 INFO L225 Difference]: With dead ends: 2545 [2020-09-25 05:35:09,771 INFO L226 Difference]: Without dead ends: 1757 [2020-09-25 05:35:09,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-09-25 05:35:09,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1757 states. [2020-09-25 05:35:09,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1757 to 1610. [2020-09-25 05:35:09,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1610 states. [2020-09-25 05:35:09,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1610 states to 1610 states and 1903 transitions. [2020-09-25 05:35:09,849 INFO L78 Accepts]: Start accepts. Automaton has 1610 states and 1903 transitions. Word has length 182 [2020-09-25 05:35:09,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:09,850 INFO L479 AbstractCegarLoop]: Abstraction has 1610 states and 1903 transitions. [2020-09-25 05:35:09,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:35:09,851 INFO L276 IsEmpty]: Start isEmpty. Operand 1610 states and 1903 transitions. [2020-09-25 05:35:09,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-25 05:35:09,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:09,859 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 05:35:09,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:35:09,860 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:09,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:09,860 INFO L82 PathProgramCache]: Analyzing trace with hash -318750663, now seen corresponding path program 1 times [2020-09-25 05:35:09,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:09,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311501185] [2020-09-25 05:35:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:09,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:10,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:12,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:13,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:14,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:14,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:14,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-25 05:35:14,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:35:14,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 05:35:14,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:14,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:14,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:14,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-25 05:35:14,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 05:35:14,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:14,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:35:14,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:14,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:15,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:15,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 05:35:15,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:15,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 05:35:15,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:15,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:15,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:35:15,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:15,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:35:15,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:15,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 05:35:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:15,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:15,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:15,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 05:35:15,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:15,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 05:35:15,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:15,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:15,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:35:15,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:35:15,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 05:35:15,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:15,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 05:35:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:15,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:15,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:35:15,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 05:35:15,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:35:15,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 05:35:15,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:35:15,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:35:15,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:35:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:35:15,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 05:35:15,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:35:15,225 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:35:15,225 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311501185] [2020-09-25 05:35:15,225 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:35:15,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:35:15,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111064713] [2020-09-25 05:35:15,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:35:15,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:35:15,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:35:15,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:35:15,227 INFO L87 Difference]: Start difference. First operand 1610 states and 1903 transitions. Second operand 7 states. [2020-09-25 05:35:17,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:35:17,388 INFO L93 Difference]: Finished difference Result 3531 states and 4248 transitions. [2020-09-25 05:35:17,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 05:35:17,392 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-25 05:35:17,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:35:17,405 INFO L225 Difference]: With dead ends: 3531 [2020-09-25 05:35:17,406 INFO L226 Difference]: Without dead ends: 1945 [2020-09-25 05:35:17,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 05:35:17,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1945 states. [2020-09-25 05:35:17,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1945 to 1898. [2020-09-25 05:35:17,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1898 states. [2020-09-25 05:35:17,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2268 transitions. [2020-09-25 05:35:17,487 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2268 transitions. Word has length 203 [2020-09-25 05:35:17,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:35:17,487 INFO L479 AbstractCegarLoop]: Abstraction has 1898 states and 2268 transitions. [2020-09-25 05:35:17,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:35:17,487 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2268 transitions. [2020-09-25 05:35:17,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-09-25 05:35:17,495 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:35:17,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:35:17,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:35:17,496 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:35:17,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:35:17,497 INFO L82 PathProgramCache]: Analyzing trace with hash -914003078, now seen corresponding path program 1 times [2020-09-25 05:35:17,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:35:17,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049126683] [2020-09-25 05:35:17,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:35:17,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:35:17,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:17,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:17,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:17,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:35:18,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking...