/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=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:14:42,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:14:42,312 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:14:42,354 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:14:42,355 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:14:42,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:14:42,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:14:42,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:14:42,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:14:42,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:14:42,377 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:14:42,378 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:14:42,379 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:14:42,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:14:42,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:14:42,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:14:42,390 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:14:42,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:14:42,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:14:42,402 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:14:42,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:14:42,405 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:14:42,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:14:42,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:14:42,420 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:14:42,421 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:14:42,421 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:14:42,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:14:42,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:14:42,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:14:42,433 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:14:42,434 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:14:42,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:14:42,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:14:42,441 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:14:42,442 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:14:42,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:14:42,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:14:42,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:14:42,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:14:42,445 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:14:42,446 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 11:14:42,472 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:14:42,473 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:14:42,474 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:14:42,474 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:14:42,475 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:14:42,475 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:14:42,475 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:14:42,475 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:14:42,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:14:42,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:14:42,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:14:42,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:14:42,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:14:42,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:14:42,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:14:42,477 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:14:42,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:14:42,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:14:42,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:14:42,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:14:42,478 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:14:42,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:14:42,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:14:42,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:14:42,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:14:42,479 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:14:42,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:14:42,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:14:42,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:14:42,480 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=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:14:42,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:14:42,960 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:14:42,965 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:14:42,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:14:42,968 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:14:42,969 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 11:14:43,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a296a0af9/46125022d5b1452da0bcd84cbb6bdce3/FLAG1394ff3ee [2020-09-25 11:14:43,728 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:14:43,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label53.c [2020-09-25 11:14:43,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a296a0af9/46125022d5b1452da0bcd84cbb6bdce3/FLAG1394ff3ee [2020-09-25 11:14:43,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a296a0af9/46125022d5b1452da0bcd84cbb6bdce3 [2020-09-25 11:14:43,986 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:14:43,992 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:14:43,993 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:43,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:14:43,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:14:44,001 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:43" (1/1) ... [2020-09-25 11:14:44,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b22a6b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:44, skipping insertion in model container [2020-09-25 11:14:44,006 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:14:43" (1/1) ... [2020-09-25 11:14:44,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:14:44,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:14:44,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:44,538 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:14:44,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:14:44,828 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:14:44,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:44 WrapperNode [2020-09-25 11:14:44,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:14:44,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:14:44,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:14:44,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:14:44,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:44" (1/1) ... [2020-09-25 11:14:44,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:44" (1/1) ... [2020-09-25 11:14:44,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:44" (1/1) ... [2020-09-25 11:14:44,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:44" (1/1) ... [2020-09-25 11:14:44,932 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:44" (1/1) ... [2020-09-25 11:14:44,958 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:44" (1/1) ... [2020-09-25 11:14:44,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:44" (1/1) ... [2020-09-25 11:14:44,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:14:44,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:14:44,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:14:44,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:14:44,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:44" (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 11:14:45,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:14:45,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:14:45,072 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:14:45,072 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:14:45,073 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:14:45,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:14:45,073 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:14:45,073 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:14:45,073 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:14:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:14:45,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:14:46,509 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:14:46,509 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:14:46,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:46 BoogieIcfgContainer [2020-09-25 11:14:46,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:14:46,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:14:46,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:14:46,538 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:14:46,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:14:43" (1/3) ... [2020-09-25 11:14:46,540 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e5595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:46, skipping insertion in model container [2020-09-25 11:14:46,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:14:44" (2/3) ... [2020-09-25 11:14:46,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51e5595 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:14:46, skipping insertion in model container [2020-09-25 11:14:46,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:14:46" (3/3) ... [2020-09-25 11:14:46,544 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label53.c [2020-09-25 11:14:46,559 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:14:46,577 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:14:46,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:14:46,657 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:14:46,659 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:14:46,659 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:14:46,659 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:14:46,659 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:14:46,660 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:14:46,660 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:14:46,660 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:14:46,711 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 11:14:46,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 11:14:46,748 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:46,750 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] [2020-09-25 11:14:46,750 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:46,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:46,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1414748743, now seen corresponding path program 1 times [2020-09-25 11:14:46,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:46,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487880775] [2020-09-25 11:14:46,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:47,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:48,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:48,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:52,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:52,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 11:14:52,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:14:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:14:52,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:52,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:14:52,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 11:14:52,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-09-25 11:14:52,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:14:52,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:14:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:52,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:52,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:52,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:14:52,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:14:52,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 11:14:52,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:52,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:14:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:14:52,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 11:14:52,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:14:52,400 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 11:14:52,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487880775] [2020-09-25 11:14:52,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:14:52,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:14:52,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897347213] [2020-09-25 11:14:52,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:14:52,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:14:52,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:14:52,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:14:52,438 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 11:14:54,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:14:54,697 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 11:14:54,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:14:54,700 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 142 [2020-09-25 11:14:54,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:14:54,747 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 11:14:54,747 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 11:14:54,763 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 11:14:54,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 11:14:54,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 11:14:54,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 11:14:54,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 11:14:54,925 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 142 [2020-09-25 11:14:54,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:14:54,926 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 11:14:54,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:14:54,926 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 11:14:54,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-09-25 11:14:54,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:14:54,932 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] [2020-09-25 11:14:54,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:14:54,933 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:14:54,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:14:54,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1681317672, now seen corresponding path program 1 times [2020-09-25 11:14:54,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:14:54,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413919925] [2020-09-25 11:14:54,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:14:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:14:54,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:55,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:55,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:55,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:14:59,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:14:59,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-09-25 11:14:59,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:14:59,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:14:59,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:14:59,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:14:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 11:14:59,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 11:14:59,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 11:14:59,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:00,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:00,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:00,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:00,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:00,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 11:15:00,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:00,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:00,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:00,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 11:15:00,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:00,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:00,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:00,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:00,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:00,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:15:00,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:00,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 11:15:00,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:00,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:00,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:15:00,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:15:00,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 11:15:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:01,231 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 11:15:01,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413919925] [2020-09-25 11:15:01,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:01,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 11:15:01,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887801096] [2020-09-25 11:15:01,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 11:15:01,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:01,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 11:15:01,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-09-25 11:15:01,240 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 13 states. [2020-09-25 11:15:01,573 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 64 [2020-09-25 11:15:02,104 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2020-09-25 11:15:02,783 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2020-09-25 11:15:03,416 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-09-25 11:15:04,448 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2020-09-25 11:15:05,054 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2020-09-25 11:15:05,695 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 67 [2020-09-25 11:15:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:08,628 INFO L93 Difference]: Finished difference Result 2854 states and 3903 transitions. [2020-09-25 11:15:08,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-09-25 11:15:08,629 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 163 [2020-09-25 11:15:08,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:08,644 INFO L225 Difference]: With dead ends: 2854 [2020-09-25 11:15:08,645 INFO L226 Difference]: Without dead ends: 1824 [2020-09-25 11:15:08,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 270 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=361, Invalid=829, Unknown=0, NotChecked=0, Total=1190 [2020-09-25 11:15:08,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2020-09-25 11:15:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1336. [2020-09-25 11:15:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-09-25 11:15:08,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1582 transitions. [2020-09-25 11:15:08,716 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1582 transitions. Word has length 163 [2020-09-25 11:15:08,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:08,716 INFO L479 AbstractCegarLoop]: Abstraction has 1336 states and 1582 transitions. [2020-09-25 11:15:08,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 11:15:08,717 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1582 transitions. [2020-09-25 11:15:08,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-09-25 11:15:08,723 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:08,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 11:15:08,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:15:08,724 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:08,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:08,724 INFO L82 PathProgramCache]: Analyzing trace with hash 762247708, now seen corresponding path program 1 times [2020-09-25 11:15:08,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:08,725 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298950548] [2020-09-25 11:15:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:08,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:08,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:09,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:09,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:10,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:11,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:13,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:13,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-09-25 11:15:13,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 11:15:13,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-25 11:15:13,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:13,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 11:15:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:15:13,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-25 11:15:13,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:14,447 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-09-25 11:15:14,588 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 37 [2020-09-25 11:15:14,774 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2020-09-25 11:15:14,935 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 33 [2020-09-25 11:15:15,073 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 30 [2020-09-25 11:15:15,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:15,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:15,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:15,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:15,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:15,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 11:15:15,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:15,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:15:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 11:15:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:15,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:15,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:15,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:15,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:15:15,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:15,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 11:15:15,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:15,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:15:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:15:15,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 11:15:15,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:15,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 11:15:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:15,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:15,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:15,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 11:15:15,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:15,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 11:15:15,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:15,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:15,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:15:15,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:15:15,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 11:15:15,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 11:15:15,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298950548] [2020-09-25 11:15:15,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:15,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 11:15:15,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851179178] [2020-09-25 11:15:15,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 11:15:15,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:15,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 11:15:15,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2020-09-25 11:15:15,857 INFO L87 Difference]: Start difference. First operand 1336 states and 1582 transitions. Second operand 21 states. [2020-09-25 11:15:17,980 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2020-09-25 11:15:18,748 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2020-09-25 11:15:19,086 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 88 [2020-09-25 11:15:19,612 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 84 [2020-09-25 11:15:19,836 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-25 11:15:20,327 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 87 [2020-09-25 11:15:20,840 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-09-25 11:15:21,421 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2020-09-25 11:15:22,159 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-09-25 11:15:22,858 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-25 11:15:25,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:15:25,349 INFO L93 Difference]: Finished difference Result 5503 states and 6915 transitions. [2020-09-25 11:15:25,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-25 11:15:25,350 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 202 [2020-09-25 11:15:25,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:15:25,380 INFO L225 Difference]: With dead ends: 5503 [2020-09-25 11:15:25,380 INFO L226 Difference]: Without dead ends: 4191 [2020-09-25 11:15:25,391 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 628 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=632, Invalid=1720, Unknown=0, NotChecked=0, Total=2352 [2020-09-25 11:15:25,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2020-09-25 11:15:25,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 3386. [2020-09-25 11:15:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3386 states. [2020-09-25 11:15:25,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3386 states to 3386 states and 4050 transitions. [2020-09-25 11:15:25,546 INFO L78 Accepts]: Start accepts. Automaton has 3386 states and 4050 transitions. Word has length 202 [2020-09-25 11:15:25,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:15:25,548 INFO L479 AbstractCegarLoop]: Abstraction has 3386 states and 4050 transitions. [2020-09-25 11:15:25,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 11:15:25,548 INFO L276 IsEmpty]: Start isEmpty. Operand 3386 states and 4050 transitions. [2020-09-25 11:15:25,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-09-25 11:15:25,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:15:25,564 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 11:15:25,564 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:15:25,564 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:15:25,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:15:25,565 INFO L82 PathProgramCache]: Analyzing trace with hash 687029284, now seen corresponding path program 1 times [2020-09-25 11:15:25,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:15:25,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532548566] [2020-09-25 11:15:25,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:15:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:25,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:25,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:26,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:27,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:27,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:28,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:29,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:29,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:30,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:30,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:30,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:30,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 11:15:30,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 11:15:30,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-25 11:15:30,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:30,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:30,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:15:30,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 11:15:30,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-09-25 11:15:30,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:30,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:15:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:30,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:30,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:30,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 11:15:30,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:30,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 11:15:30,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:30,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:15:30,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:30,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:15:30,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:30,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 11:15:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:31,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:31,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 11:15:31,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:15:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 11:15:31,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:31,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:31,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 11:15:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:31,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-25 11:15:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:31,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:31,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:31,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:31,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 11:15:31,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:31,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 11:15:31,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:31,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:31,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:15:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:31,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 11:15:31,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:15:31,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-09-25 11:15:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:15:31,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:31,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:15:31,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:15:31,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 11:15:31,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:15:31,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 11:15:31,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:15:31,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:15:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:15:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:15:31,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 11:15:31,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-25 11:15:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 55 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 11:15:31,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532548566] [2020-09-25 11:15:31,465 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:15:31,465 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:15:31,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748679268] [2020-09-25 11:15:31,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:15:31,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:15:31,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:15:31,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:15:31,467 INFO L87 Difference]: Start difference. First operand 3386 states and 4050 transitions. Second operand 12 states.