/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_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:37:48,925 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:37:48,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:37:48,955 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:37:48,956 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:37:48,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:37:48,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:37:48,961 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:37:48,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:37:48,964 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:37:48,965 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:37:48,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:37:48,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:37:48,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:37:48,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:37:48,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:37:48,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:37:48,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:37:48,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:37:48,977 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:37:48,978 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:37:48,980 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:37:48,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:37:48,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:37:48,988 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:37:48,988 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:37:48,990 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:37:48,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:37:48,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:37:48,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:37:48,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:37:48,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:37:48,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:37:48,999 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:37:49,000 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:37:49,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:37:49,001 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:37:49,002 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:37:49,002 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:37:49,003 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:37:49,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:37:49,014 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 14:37:49,068 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:37:49,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:37:49,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:37:49,071 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:37:49,071 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:37:49,071 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:37:49,072 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:37:49,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:37:49,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:37:49,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:37:49,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:37:49,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:37:49,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:37:49,075 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:37:49,075 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:37:49,075 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:37:49,075 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:37:49,076 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:37:49,076 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:37:49,076 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:37:49,076 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:37:49,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:49,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:37:49,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:37:49,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:37:49,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:37:49,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:37:49,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:37:49,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:37:49,079 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 14:37:49,585 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:37:49,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:37:49,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:37:49,606 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:37:49,607 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:37:49,608 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 14:37:49,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/228ddb8aa/d0629acc7e2d4a258249b860715c19ea/FLAG4a011f861 [2020-09-25 14:37:50,392 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:37:50,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label54.c [2020-09-25 14:37:50,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/228ddb8aa/d0629acc7e2d4a258249b860715c19ea/FLAG4a011f861 [2020-09-25 14:37:50,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/228ddb8aa/d0629acc7e2d4a258249b860715c19ea [2020-09-25 14:37:50,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:37:50,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:37:50,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:50,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:37:50,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:37:50,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:50" (1/1) ... [2020-09-25 14:37:50,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4734e8fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:50, skipping insertion in model container [2020-09-25 14:37:50,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:37:50" (1/1) ... [2020-09-25 14:37:50,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:37:50,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:37:51,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:51,182 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:37:51,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:37:51,444 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:37:51,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:51 WrapperNode [2020-09-25 14:37:51,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:37:51,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:37:51,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:37:51,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:37:51,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:51" (1/1) ... [2020-09-25 14:37:51,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:51" (1/1) ... [2020-09-25 14:37:51,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:51" (1/1) ... [2020-09-25 14:37:51,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:51" (1/1) ... [2020-09-25 14:37:51,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:51" (1/1) ... [2020-09-25 14:37:51,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:51" (1/1) ... [2020-09-25 14:37:51,570 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:51" (1/1) ... [2020-09-25 14:37:51,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:37:51,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:37:51,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:37:51,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:37:51,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:51" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:37:51,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:37:51,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:37:51,685 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 14:37:51,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:37:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 14:37:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:37:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:37:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 14:37:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:37:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:37:51,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:37:53,147 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:37:53,148 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 14:37:53,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:53 BoogieIcfgContainer [2020-09-25 14:37:53,164 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:37:53,168 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:37:53,168 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:37:53,172 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:37:53,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:37:50" (1/3) ... [2020-09-25 14:37:53,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26851755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:53, skipping insertion in model container [2020-09-25 14:37:53,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:37:51" (2/3) ... [2020-09-25 14:37:53,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26851755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:37:53, skipping insertion in model container [2020-09-25 14:37:53,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:37:53" (3/3) ... [2020-09-25 14:37:53,178 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label54.c [2020-09-25 14:37:53,190 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:37:53,210 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:37:53,232 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:37:53,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:37:53,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:37:53,275 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:37:53,275 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:37:53,275 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:37:53,275 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:37:53,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:37:53,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:37:53,309 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 14:37:53,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 14:37:53,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:37:53,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:37:53,334 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:37:53,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:37:53,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1970187929, now seen corresponding path program 1 times [2020-09-25 14:37:53,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:37:53,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800467740] [2020-09-25 14:37:53,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:37:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:53,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:54,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:54,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:55,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:57,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:58,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:58,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-09-25 14:37:58,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:37:58,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-09-25 14:37:58,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:58,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:58,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:37:58,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:37:58,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 14:37:58,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 14:37:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:37:59,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:37:59,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:37:59,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:37:59,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:37:59,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:37:59,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 14:37:59,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:37:59,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:37:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:37:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:37:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 14:37:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:37:59,116 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 14:37:59,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800467740] [2020-09-25 14:37:59,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:37:59,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 14:37:59,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683286720] [2020-09-25 14:37:59,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 14:37:59,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:37:59,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 14:37:59,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 14:37:59,173 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 14:38:01,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:01,479 INFO L93 Difference]: Finished difference Result 1212 states and 1611 transitions. [2020-09-25 14:38:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:38:01,481 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2020-09-25 14:38:01,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:01,514 INFO L225 Difference]: With dead ends: 1212 [2020-09-25 14:38:01,514 INFO L226 Difference]: Without dead ends: 638 [2020-09-25 14:38:01,527 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 14:38:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2020-09-25 14:38:01,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 603. [2020-09-25 14:38:01,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 14:38:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 14:38:01,632 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 150 [2020-09-25 14:38:01,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:01,633 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 14:38:01,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 14:38:01,634 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 14:38:01,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-09-25 14:38:01,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:01,643 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:01,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:38:01,644 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:01,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:01,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1973679864, now seen corresponding path program 1 times [2020-09-25 14:38:01,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:01,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079109558] [2020-09-25 14:38:01,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:01,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:01,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:03,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:06,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:06,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-25 14:38:06,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 14:38:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:38:06,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:06,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:06,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:38:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 14:38:06,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 14:38:06,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:07,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:07,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:07,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:07,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:07,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:07,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 14:38:07,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:07,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:07,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:07,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 14:38:07,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:07,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:07,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:07,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 14:38:07,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:07,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-25 14:38:07,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:07,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:07,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:38:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:38:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:07,408 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 14:38:07,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079109558] [2020-09-25 14:38:07,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:07,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:38:07,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528232516] [2020-09-25 14:38:07,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:38:07,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:07,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:38:07,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:38:07,413 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 9 states. [2020-09-25 14:38:11,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:11,305 INFO L93 Difference]: Finished difference Result 1904 states and 2480 transitions. [2020-09-25 14:38:11,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 14:38:11,310 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2020-09-25 14:38:11,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:11,320 INFO L225 Difference]: With dead ends: 1904 [2020-09-25 14:38:11,321 INFO L226 Difference]: Without dead ends: 1046 [2020-09-25 14:38:11,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-09-25 14:38:11,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2020-09-25 14:38:11,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 876. [2020-09-25 14:38:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 876 states. [2020-09-25 14:38:11,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1014 transitions. [2020-09-25 14:38:11,369 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1014 transitions. Word has length 171 [2020-09-25 14:38:11,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:11,370 INFO L479 AbstractCegarLoop]: Abstraction has 876 states and 1014 transitions. [2020-09-25 14:38:11,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:38:11,370 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1014 transitions. [2020-09-25 14:38:11,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 14:38:11,374 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:11,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:11,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:38:11,375 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:11,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:11,376 INFO L82 PathProgramCache]: Analyzing trace with hash 276355023, now seen corresponding path program 1 times [2020-09-25 14:38:11,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:11,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487383953] [2020-09-25 14:38:11,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:11,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:11,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:11,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:11,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:11,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:12,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:12,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:12,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:12,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:12,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:16,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 14:38:16,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:38:16,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 14:38:16,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:16,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 14:38:16,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-09-25 14:38:16,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:16,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:16,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:16,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:16,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:16,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:16,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:16,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:16,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:16,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:16,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:16,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:16,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:16,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:38:16,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:16,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 14:38:16,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:16,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:16,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:16,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:16,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 14:38:16,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:16,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487383953] [2020-09-25 14:38:16,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:16,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:16,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757851833] [2020-09-25 14:38:16,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:16,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:16,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:16,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:16,713 INFO L87 Difference]: Start difference. First operand 876 states and 1014 transitions. Second operand 5 states. [2020-09-25 14:38:18,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:18,671 INFO L93 Difference]: Finished difference Result 2057 states and 2425 transitions. [2020-09-25 14:38:18,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:18,677 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 14:38:18,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:18,685 INFO L225 Difference]: With dead ends: 2057 [2020-09-25 14:38:18,685 INFO L226 Difference]: Without dead ends: 1034 [2020-09-25 14:38:18,689 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 14:38:18,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2020-09-25 14:38:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 989. [2020-09-25 14:38:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 989 states. [2020-09-25 14:38:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1135 transitions. [2020-09-25 14:38:18,721 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1135 transitions. Word has length 175 [2020-09-25 14:38:18,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:18,722 INFO L479 AbstractCegarLoop]: Abstraction has 989 states and 1135 transitions. [2020-09-25 14:38:18,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:18,722 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1135 transitions. [2020-09-25 14:38:18,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-09-25 14:38:18,727 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:18,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:18,728 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:38:18,728 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:18,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:18,728 INFO L82 PathProgramCache]: Analyzing trace with hash -256131408, now seen corresponding path program 1 times [2020-09-25 14:38:18,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:18,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968140482] [2020-09-25 14:38:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:18,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:18,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:18,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:19,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:19,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:19,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:20,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:20,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:21,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:22,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:23,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:23,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-09-25 14:38:23,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 14:38:23,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 14:38:23,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:23,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:23,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:38:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 14:38:23,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 14:38:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:38:23,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:23,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:23,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:23,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:23,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:23,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:23,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 14:38:23,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:23,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:23,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:23,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:23,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:24,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:24,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:24,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:24,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 14:38:24,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:24,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 14:38:24,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:24,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:24,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 14:38:24,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:24,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 14:38:24,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968140482] [2020-09-25 14:38:24,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:24,170 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 14:38:24,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346144438] [2020-09-25 14:38:24,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:38:24,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:24,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:38:24,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:38:24,174 INFO L87 Difference]: Start difference. First operand 989 states and 1135 transitions. Second operand 5 states. [2020-09-25 14:38:26,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:26,078 INFO L93 Difference]: Finished difference Result 2441 states and 2898 transitions. [2020-09-25 14:38:26,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:38:26,079 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-09-25 14:38:26,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:26,088 INFO L225 Difference]: With dead ends: 2441 [2020-09-25 14:38:26,088 INFO L226 Difference]: Without dead ends: 1476 [2020-09-25 14:38:26,092 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 14:38:26,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-09-25 14:38:26,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1279. [2020-09-25 14:38:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-09-25 14:38:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1507 transitions. [2020-09-25 14:38:26,131 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1507 transitions. Word has length 180 [2020-09-25 14:38:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:26,131 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1507 transitions. [2020-09-25 14:38:26,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:38:26,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1507 transitions. [2020-09-25 14:38:26,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 14:38:26,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:26,139 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 14:38:26,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:38:26,139 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:26,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:26,140 INFO L82 PathProgramCache]: Analyzing trace with hash -248235162, now seen corresponding path program 1 times [2020-09-25 14:38:26,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:26,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290524371] [2020-09-25 14:38:26,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:26,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:26,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:26,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:26,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:26,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:27,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:27,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:27,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:27,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:29,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:29,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:30,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:30,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:31,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:31,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 14:38:31,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:38:31,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:38:31,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:31,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:31,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:38:31,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 14:38:31,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-09-25 14:38:31,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:31,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:38:31,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:31,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:31,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:31,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:38:31,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:31,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 14:38:31,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:31,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:38:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:31,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:38:31,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:31,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 14:38:31,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:31,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:31,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 14:38:31,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:38:31,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 14:38:31,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:31,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:38:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:31,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:38:31,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:31,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-25 14:38:31,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:31,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:31,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:38:31,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 14:38:31,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:38:31,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-09-25 14:38:31,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:38:31,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:38:31,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:38:31,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:38:31,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 14:38:31,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:38:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 65 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 14:38:32,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290524371] [2020-09-25 14:38:32,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:38:32,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 14:38:32,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036035672] [2020-09-25 14:38:32,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 14:38:32,085 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:38:32,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 14:38:32,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 14:38:32,086 INFO L87 Difference]: Start difference. First operand 1279 states and 1507 transitions. Second operand 12 states. [2020-09-25 14:38:34,591 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-09-25 14:38:36,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:38:36,027 INFO L93 Difference]: Finished difference Result 3225 states and 3956 transitions. [2020-09-25 14:38:36,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 14:38:36,027 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 231 [2020-09-25 14:38:36,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:38:36,035 INFO L225 Difference]: With dead ends: 3225 [2020-09-25 14:38:36,035 INFO L226 Difference]: Without dead ends: 1427 [2020-09-25 14:38:36,042 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2020-09-25 14:38:36,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2020-09-25 14:38:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 1261. [2020-09-25 14:38:36,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1261 states. [2020-09-25 14:38:36,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1377 transitions. [2020-09-25 14:38:36,076 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1377 transitions. Word has length 231 [2020-09-25 14:38:36,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:38:36,077 INFO L479 AbstractCegarLoop]: Abstraction has 1261 states and 1377 transitions. [2020-09-25 14:38:36,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 14:38:36,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1377 transitions. [2020-09-25 14:38:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-25 14:38:36,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:38:36,083 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:38:36,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:38:36,083 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:38:36,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:38:36,083 INFO L82 PathProgramCache]: Analyzing trace with hash 804479781, now seen corresponding path program 1 times [2020-09-25 14:38:36,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:38:36,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [334730133] [2020-09-25 14:38:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:38:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:38:36,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:36,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:36,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:36,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:36,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:37,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:37,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:37,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:38,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:38,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:38:39,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking...