/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/iftelse.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:56:39,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:56:39,395 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:56:39,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:56:39,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:56:39,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:56:39,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:56:39,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:56:39,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:56:39,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:56:39,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:56:39,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:56:39,428 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:56:39,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:56:39,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:56:39,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:56:39,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:56:39,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:56:39,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:56:39,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:56:39,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:56:39,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:56:39,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:56:39,440 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:56:39,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:56:39,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:56:39,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:56:39,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:56:39,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:56:39,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:56:39,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:56:39,446 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:56:39,447 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:56:39,448 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:56:39,449 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:56:39,449 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:56:39,450 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:56:39,450 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:56:39,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:56:39,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:56:39,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:56:39,452 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 [2020-10-14 23:56:39,474 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:56:39,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:56:39,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:56:39,475 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:56:39,476 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:56:39,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:56:39,476 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:56:39,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:56:39,476 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:56:39,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:56:39,477 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:56:39,477 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:56:39,477 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:56:39,477 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:56:39,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:56:39,478 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:56:39,478 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:56:39,478 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:56:39,478 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:56:39,478 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:56:39,479 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:56:39,479 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:56:39,479 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:56:39,479 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:56:39,479 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:56:39,480 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:56:39,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:56:39,480 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:56:39,480 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:56:39,480 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-14 23:56:39,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:56:39,792 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:56:39,795 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:56:39,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:56:39,797 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:56:39,797 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/iftelse.c [2020-10-14 23:56:39,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d3effaa1/61bdd52945db4c13a3117e27a217baee/FLAGff8664f94 [2020-10-14 23:56:40,300 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:56:40,301 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/iftelse.c [2020-10-14 23:56:40,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d3effaa1/61bdd52945db4c13a3117e27a217baee/FLAGff8664f94 [2020-10-14 23:56:40,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0d3effaa1/61bdd52945db4c13a3117e27a217baee [2020-10-14 23:56:40,757 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:56:40,759 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:56:40,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:56:40,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:56:40,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:56:40,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:56:40" (1/1) ... [2020-10-14 23:56:40,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f2fbdf3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:40, skipping insertion in model container [2020-10-14 23:56:40,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:56:40" (1/1) ... [2020-10-14 23:56:40,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:56:40,795 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:56:40,959 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:56:40,964 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:56:40,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:56:40,994 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:56:40,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:40 WrapperNode [2020-10-14 23:56:40,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:56:40,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:56:40,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:56:40,996 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:56:41,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:40" (1/1) ... [2020-10-14 23:56:41,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:40" (1/1) ... [2020-10-14 23:56:41,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:40" (1/1) ... [2020-10-14 23:56:41,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:40" (1/1) ... [2020-10-14 23:56:41,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:40" (1/1) ... [2020-10-14 23:56:41,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:40" (1/1) ... [2020-10-14 23:56:41,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:40" (1/1) ... [2020-10-14 23:56:41,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:56:41,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:56:41,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:56:41,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:56:41,120 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:40" (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 [2020-10-14 23:56:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:56:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:56:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 23:56:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 23:56:41,176 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:56:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:56:41,176 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:56:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 23:56:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:56:41,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:56:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:56:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:56:41,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:56:41,362 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:56:41,362 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:56:41,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:56:41 BoogieIcfgContainer [2020-10-14 23:56:41,366 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:56:41,367 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:56:41,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:56:41,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:56:41,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:56:40" (1/3) ... [2020-10-14 23:56:41,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1242076d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:56:41, skipping insertion in model container [2020-10-14 23:56:41,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:56:40" (2/3) ... [2020-10-14 23:56:41,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1242076d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:56:41, skipping insertion in model container [2020-10-14 23:56:41,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:56:41" (3/3) ... [2020-10-14 23:56:41,373 INFO L109 eAbstractionObserver]: Analyzing ICFG iftelse.c [2020-10-14 23:56:41,383 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:56:41,390 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:56:41,404 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:56:41,429 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:56:41,429 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:56:41,429 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:56:41,429 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:56:41,429 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:56:41,430 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:56:41,430 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:56:41,430 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:56:41,451 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-14 23:56:41,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:56:41,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:41,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:41,461 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:41,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:41,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1240854710, now seen corresponding path program 1 times [2020-10-14 23:56:41,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:41,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1215854665] [2020-10-14 23:56:41,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:41,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:42,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:42,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:56:42,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 461 [2020-10-14 23:56:42,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:42,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:56:42,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:42,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:56:42,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:56:42,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:42,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:42,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:42,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:56:42,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:42,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:56:42,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:42,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:42,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:42,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:42,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:42,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:56:42,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:42,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1215854665] [2020-10-14 23:56:42,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:56:42,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-14 23:56:42,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348155162] [2020-10-14 23:56:42,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:56:42,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:42,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:56:42,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:56:42,523 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 8 states. [2020-10-14 23:56:42,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:42,828 INFO L93 Difference]: Finished difference Result 58 states and 81 transitions. [2020-10-14 23:56:42,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:56:42,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-10-14 23:56:42,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:42,840 INFO L225 Difference]: With dead ends: 58 [2020-10-14 23:56:42,840 INFO L226 Difference]: Without dead ends: 29 [2020-10-14 23:56:42,844 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:56:42,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-14 23:56:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2020-10-14 23:56:42,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-14 23:56:42,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-10-14 23:56:42,891 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 14 [2020-10-14 23:56:42,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:42,891 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-10-14 23:56:42,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:56:42,892 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-10-14 23:56:42,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:56:42,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:42,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:42,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:56:42,893 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:42,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:42,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1298113012, now seen corresponding path program 1 times [2020-10-14 23:56:42,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:42,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2640385] [2020-10-14 23:56:42,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:42,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:43,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:43,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-14 23:56:43,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:43,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 23:56:43,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:43,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:56:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:43,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 23:56:43,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:43,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:43,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:43,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:43,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:56:43,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:43,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:56:43,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:43,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:43,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:43,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:43,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:56:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:43,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2640385] [2020-10-14 23:56:43,157 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:56:43,157 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:56:43,157 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803388665] [2020-10-14 23:56:43,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:56:43,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:43,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:56:43,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:56:43,169 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2020-10-14 23:56:45,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:45,368 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-10-14 23:56:45,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:56:45,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-14 23:56:45,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:45,373 INFO L225 Difference]: With dead ends: 41 [2020-10-14 23:56:45,373 INFO L226 Difference]: Without dead ends: 31 [2020-10-14 23:56:45,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:56:45,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-14 23:56:45,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-14 23:56:45,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-14 23:56:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-14 23:56:45,396 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 14 [2020-10-14 23:56:45,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:45,396 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-14 23:56:45,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:56:45,397 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-14 23:56:45,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-14 23:56:45,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:45,399 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:45,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:56:45,399 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:45,400 INFO L82 PathProgramCache]: Analyzing trace with hash -70212629, now seen corresponding path program 1 times [2020-10-14 23:56:45,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:45,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689356007] [2020-10-14 23:56:45,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:45,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:45,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:45,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:45,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:45,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:45,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:45,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-14 23:56:45,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:56:45,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-14 23:56:45,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:45,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:45,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:56:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:45,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:56:45,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:46,048 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 20 [2020-10-14 23:56:46,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:46,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:46,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:46,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:46,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:56:46,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:46,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:46,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:46,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:46,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:46,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:46,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:46,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689356007] [2020-10-14 23:56:46,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:46,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:56:46,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231174868] [2020-10-14 23:56:46,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:56:46,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:46,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:56:46,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:56:46,093 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 9 states. [2020-10-14 23:56:46,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:46,373 INFO L93 Difference]: Finished difference Result 44 states and 51 transitions. [2020-10-14 23:56:46,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:56:46,374 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-10-14 23:56:46,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:46,375 INFO L225 Difference]: With dead ends: 44 [2020-10-14 23:56:46,375 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 23:56:46,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:56:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 23:56:46,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-14 23:56:46,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:56:46,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-10-14 23:56:46,386 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 17 [2020-10-14 23:56:46,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:46,387 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-10-14 23:56:46,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:56:46,387 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-10-14 23:56:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:56:46,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:46,388 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:46,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:56:46,389 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:46,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:46,389 INFO L82 PathProgramCache]: Analyzing trace with hash 298022744, now seen corresponding path program 2 times [2020-10-14 23:56:46,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:46,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202877510] [2020-10-14 23:56:46,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:46,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:46,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:46,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:46,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:46,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:46,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:46,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:46,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:46,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:46,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-14 23:56:46,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-14 23:56:46,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-10-14 23:56:46,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:46,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:46,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:56:46,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:46,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:56:46,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:56:47,309 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 23 [2020-10-14 23:56:47,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:47,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:47,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:56:47,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:47,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:47,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:47,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:47,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:47,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:47,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:47,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:47,362 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:47,363 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202877510] [2020-10-14 23:56:47,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:47,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:56:47,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193631243] [2020-10-14 23:56:47,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:56:47,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:47,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:56:47,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:56:47,367 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 11 states. [2020-10-14 23:56:47,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:47,725 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2020-10-14 23:56:47,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:56:47,725 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 20 [2020-10-14 23:56:47,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:47,727 INFO L225 Difference]: With dead ends: 67 [2020-10-14 23:56:47,727 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 23:56:47,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:56:47,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 23:56:47,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47. [2020-10-14 23:56:47,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-14 23:56:47,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-10-14 23:56:47,737 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 20 [2020-10-14 23:56:47,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:47,738 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-10-14 23:56:47,738 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:56:47,738 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-10-14 23:56:47,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-14 23:56:47,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:47,739 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:47,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:56:47,740 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:47,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:47,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1108804105, now seen corresponding path program 3 times [2020-10-14 23:56:47,740 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:47,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747660068] [2020-10-14 23:56:47,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:47,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:48,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:48,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:48,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:56:48,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 23:56:48,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-10-14 23:56:48,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:48,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:48,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:56:48,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:48,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:56:48,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:50,199 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 24 [2020-10-14 23:56:50,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:50,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:50,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:56:50,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:50,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:56:50,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:50,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:50,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:50,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:50,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:50,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:50,237 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:56:50,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747660068] [2020-10-14 23:56:50,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:50,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:56:50,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641563404] [2020-10-14 23:56:50,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:56:50,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:50,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:56:50,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:56:50,240 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 11 states. [2020-10-14 23:56:50,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:50,515 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2020-10-14 23:56:50,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:56:50,517 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 23 [2020-10-14 23:56:50,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:50,518 INFO L225 Difference]: With dead ends: 67 [2020-10-14 23:56:50,518 INFO L226 Difference]: Without dead ends: 51 [2020-10-14 23:56:50,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:56:50,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-14 23:56:50,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-10-14 23:56:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-14 23:56:50,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-14 23:56:50,534 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 23 [2020-10-14 23:56:50,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:50,534 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-14 23:56:50,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:56:50,535 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-14 23:56:50,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:56:50,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:50,537 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:50,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:56:50,538 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:50,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:50,540 INFO L82 PathProgramCache]: Analyzing trace with hash 142998650, now seen corresponding path program 4 times [2020-10-14 23:56:50,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:50,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [304983641] [2020-10-14 23:56:50,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:50,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:51,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:51,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:51,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:51,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-14 23:56:51,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-14 23:56:51,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1066 [2020-10-14 23:56:51,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:51,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:51,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:56:51,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:51,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:56:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:52,026 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 25 [2020-10-14 23:56:52,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:52,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:52,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:56:52,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:52,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:52,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:52,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:52,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:52,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:52,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:52,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:52,079 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:52,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [304983641] [2020-10-14 23:56:52,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:52,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:56:52,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074790544] [2020-10-14 23:56:52,080 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:56:52,080 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:52,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:56:52,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:56:52,081 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 14 states. [2020-10-14 23:56:52,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:52,724 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-10-14 23:56:52,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:56:52,725 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-10-14 23:56:52,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:52,726 INFO L225 Difference]: With dead ends: 68 [2020-10-14 23:56:52,727 INFO L226 Difference]: Without dead ends: 66 [2020-10-14 23:56:52,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:56:52,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-14 23:56:52,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-14 23:56:52,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-14 23:56:52,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-10-14 23:56:52,740 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 26 [2020-10-14 23:56:52,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:52,740 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-10-14 23:56:52,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:56:52,740 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-10-14 23:56:52,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:56:52,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:52,742 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:52,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:56:52,742 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:52,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:52,742 INFO L82 PathProgramCache]: Analyzing trace with hash 153395228, now seen corresponding path program 5 times [2020-10-14 23:56:52,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:52,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535428237] [2020-10-14 23:56:52,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:52,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:52,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:53,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:54,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:54,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:56:54,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 49 [2020-10-14 23:56:54,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1681 [2020-10-14 23:56:54,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:54,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:54,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:56:54,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:56:54,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:56:54,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:56:56,789 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 45 DAG size of output: 17 [2020-10-14 23:56:56,976 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 23 [2020-10-14 23:56:57,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:56:57,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:57,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:57,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:56:57,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:56:57,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:56:57,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:56:57,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:56:57,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:56:57,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:56:57,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:56:57,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:56:57,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:56:57,039 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:56:57,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535428237] [2020-10-14 23:56:57,040 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:56:57,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:56:57,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154090825] [2020-10-14 23:56:57,041 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:56:57,041 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:56:57,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:56:57,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:56:57,042 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 17 states. [2020-10-14 23:56:57,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:56:57,905 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2020-10-14 23:56:57,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:56:57,905 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 32 [2020-10-14 23:56:57,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:56:57,906 INFO L225 Difference]: With dead ends: 84 [2020-10-14 23:56:57,907 INFO L226 Difference]: Without dead ends: 82 [2020-10-14 23:56:57,907 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:56:57,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-14 23:56:57,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-14 23:56:57,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-14 23:56:57,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2020-10-14 23:56:57,928 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 32 [2020-10-14 23:56:57,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:56:57,929 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2020-10-14 23:56:57,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:56:57,929 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2020-10-14 23:56:57,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:56:57,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:56:57,931 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:56:57,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:56:57,931 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:56:57,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:56:57,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1397849538, now seen corresponding path program 6 times [2020-10-14 23:56:57,931 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:56:57,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1598437025] [2020-10-14 23:56:57,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:56:57,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:56:57,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:57,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:57,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:57,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:57,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:56:59,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:00,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:00,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:57:00,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 81 [2020-10-14 23:57:00,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2430 [2020-10-14 23:57:00,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:00,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:57:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:57:00,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:57:00,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:57:00,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:00,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:00,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:00,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:00,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:57:00,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:00,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:57:00,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:00,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:00,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:00,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 0 proven. 108 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:00,913 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1598437025] [2020-10-14 23:57:00,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:00,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:57:00,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317348912] [2020-10-14 23:57:00,914 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:57:00,914 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:00,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:57:00,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:57:00,915 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand 20 states. [2020-10-14 23:57:01,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:57:01,994 INFO L93 Difference]: Finished difference Result 100 states and 111 transitions. [2020-10-14 23:57:01,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:57:01,995 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 38 [2020-10-14 23:57:01,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:57:01,997 INFO L225 Difference]: With dead ends: 100 [2020-10-14 23:57:01,997 INFO L226 Difference]: Without dead ends: 98 [2020-10-14 23:57:01,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=158, Invalid=1174, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:57:01,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-14 23:57:02,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-10-14 23:57:02,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-14 23:57:02,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2020-10-14 23:57:02,013 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 38 [2020-10-14 23:57:02,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:57:02,013 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2020-10-14 23:57:02,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:57:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2020-10-14 23:57:02,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-14 23:57:02,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:57:02,015 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:57:02,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:57:02,015 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:57:02,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:57:02,015 INFO L82 PathProgramCache]: Analyzing trace with hash 207274720, now seen corresponding path program 7 times [2020-10-14 23:57:02,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:57:02,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651500138] [2020-10-14 23:57:02,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:57:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:02,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:02,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-14 23:57:03,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:03,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:03,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:03,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:03,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:03,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:03,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:03,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:03,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:03,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:04,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:04,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:04,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:04,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:05,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:05,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-14 23:57:05,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 121 [2020-10-14 23:57:05,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3761 [2020-10-14 23:57:05,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:05,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:57:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:57:05,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-14 23:57:05,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:57:58,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:57:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:57:58,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:57:58,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:57:58,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:57:58,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:57:58,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:57:58,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:57:58,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:57:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:57:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:57:58,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:57:58,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:57:58,565 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 161 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:57:58,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651500138] [2020-10-14 23:57:58,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:57:58,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-14 23:57:58,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137805893] [2020-10-14 23:57:58,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-14 23:57:58,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:57:58,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-14 23:57:58,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=420, Unknown=25, NotChecked=0, Total=506 [2020-10-14 23:57:58,568 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand 23 states. [2020-10-15 00:00:43,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:00:43,111 INFO L93 Difference]: Finished difference Result 165 states and 187 transitions. [2020-10-15 00:00:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-15 00:00:43,112 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 44 [2020-10-15 00:00:43,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:00:43,115 INFO L225 Difference]: With dead ends: 165 [2020-10-15 00:00:43,115 INFO L226 Difference]: Without dead ends: 163 [2020-10-15 00:00:43,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 105.6s TimeCoverageRelationStatistics Valid=181, Invalid=1580, Unknown=45, NotChecked=0, Total=1806 [2020-10-15 00:00:43,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-15 00:00:43,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 152. [2020-10-15 00:00:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-15 00:00:43,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 172 transitions. [2020-10-15 00:00:43,148 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 172 transitions. Word has length 44 [2020-10-15 00:00:43,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:00:43,149 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 172 transitions. [2020-10-15 00:00:43,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-15 00:00:43,149 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 172 transitions. [2020-10-15 00:00:43,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-15 00:00:43,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:00:43,152 INFO L422 BasicCegarLoop]: trace histogram [11, 9, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:00:43,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 00:00:43,153 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:00:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:00:43,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1365174871, now seen corresponding path program 1 times [2020-10-15 00:00:43,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:00:43,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1912793641] [2020-10-15 00:00:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:00:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:43,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:43,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:43,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:43,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:43,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:43,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:43,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:43,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:43,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:43,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:43,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:43,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-15 00:00:44,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... 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[2020-10-15 00:00:44,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:44,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:45,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:46,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:46,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:48,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:48,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-15 00:00:48,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 119 [2020-10-15 00:00:48,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-15 00:00:48,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:48,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:00:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-15 00:00:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-15 00:00:48,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:00:48,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:00:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:48,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:48,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:48,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:00:48,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:00:48,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:00:48,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:48,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:00:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:00:48,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:00:48,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:00:48,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-15 00:00:48,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:48,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:48,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:48,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:00:48,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:00:48,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-15 00:00:48,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:48,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:48,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:00:48,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:00:48,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:00:48,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-15 00:00:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-15 00:00:48,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1912793641] [2020-10-15 00:00:48,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 00:00:48,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-15 00:00:48,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716523313] [2020-10-15 00:00:48,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-15 00:00:48,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:00:48,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-15 00:00:48,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-15 00:00:48,284 INFO L87 Difference]: Start difference. First operand 152 states and 172 transitions. Second operand 4 states. [2020-10-15 00:00:48,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 00:00:48,334 INFO L93 Difference]: Finished difference Result 234 states and 264 transitions. [2020-10-15 00:00:48,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-15 00:00:48,334 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-15 00:00:48,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 00:00:48,336 INFO L225 Difference]: With dead ends: 234 [2020-10-15 00:00:48,336 INFO L226 Difference]: Without dead ends: 97 [2020-10-15 00:00:48,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-15 00:00:48,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-15 00:00:48,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-10-15 00:00:48,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-10-15 00:00:48,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2020-10-15 00:00:48,361 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 49 [2020-10-15 00:00:48,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 00:00:48,361 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2020-10-15 00:00:48,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-15 00:00:48,361 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2020-10-15 00:00:48,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 00:00:48,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 00:00:48,366 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 10, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 00:00:48,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 00:00:48,366 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 00:00:48,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 00:00:48,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1577699064, now seen corresponding path program 1 times [2020-10-15 00:00:48,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 00:00:48,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410798786] [2020-10-15 00:00:48,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 00:00:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:48,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:51,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:51,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:53,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:53,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:53,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-15 00:00:53,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 00:00:53,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-15 00:00:53,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:53,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-15 00:00:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-15 00:00:53,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-15 00:00:53,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:00:54,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 00:00:54,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:54,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:54,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:54,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-15 00:00:54,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:00:54,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 00:00:54,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:54,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:54,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 00:00:54,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:00:54,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 00:00:54,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:00:54,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 00:00:54,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:54,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:54,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:54,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:00:54,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:00:54,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:00:54,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:54,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:00:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:00:54,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:00:54,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:00:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-15 00:00:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:54,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:54,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:54,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:00:54,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:00:54,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:00:54,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:54,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:00:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:00:54,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:00:54,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:00:54,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-15 00:00:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:54,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:54,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:54,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:00:54,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:00:54,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:00:54,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:54,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:54,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:00:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:00:54,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:00:54,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:00:54,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-15 00:00:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:54,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:54,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:54,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:00:54,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:00:54,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:00:54,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:54,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:54,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:00:54,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:00:54,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:00:54,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 00:00:54,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-15 00:00:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:54,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:54,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:54,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:00:54,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:00:54,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:00:54,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:54,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:00:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:00:54,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:00:54,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:00:54,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-15 00:00:54,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:54,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:54,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:54,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:00:54,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:00:54,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 00:00:54,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:54,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:54,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:00:54,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:00:54,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:00:54,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:00:54,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-15 00:00:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:54,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:54,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:54,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:00:54,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:00:54,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:00:54,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:54,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:00:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:00:54,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:00:54,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:00:54,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-15 00:00:54,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:54,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:54,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:54,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:00:54,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:00:54,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 00:00:54,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:54,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:54,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:00:54,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:00:54,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:00:54,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:00:54,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-15 00:00:54,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:54,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:54,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:54,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:00:54,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:00:54,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 00:00:54,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:54,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 00:00:54,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:00:54,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 00:00:54,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:00:54,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-15 00:00:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 00:00:54,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 00:00:54,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 00:00:54,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 00:00:54,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 00:00:54,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 00:00:54,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 00:00:54,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 00:00:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 00:00:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 00:00:54,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 00:00:54,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 00:00:54,326 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 45 proven. 206 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2020-10-15 00:00:54,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410798786] [2020-10-15 00:00:54,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 00:00:54,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-15 00:00:54,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015257474] [2020-10-15 00:00:54,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-15 00:00:54,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 00:00:54,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-15 00:00:54,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2020-10-15 00:00:54,329 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 17 states. [2020-10-15 00:00:56,577 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div c_main_~j~0 4294967296))) (and (<= 3 c_main_~j~0) (<= c_main_~j~0 15) (= c_~SIZE~0 |c_old(~SIZE~0)|) (let ((.cse1 (div (+ c_main_~i~0 (* (div c_main_~i~0 4294967296) (- 4294967296))) 2))) (<= (+ (* 4294967296 .cse0) .cse1) (+ c_main_~j~0 (* 4294967296 (div .cse1 4294967296))))) (<= (+ (* 4294967296 (div (+ c_main_~i~0 (* c_main_~j~0 (- 2)) (* .cse0 8589934592) 4294967291) 4294967296)) 3) c_main_~i~0) (<= c_main_~j~0 3) (<= 0 .cse0))) is different from false [2020-10-15 00:00:58,658 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div c_main_~i~0 4294967296)) (.cse1 (div c_main_~j~0 4294967296))) (and (<= 3 c_main_~j~0) (<= c_main_~j~0 15) (<= c_main_~i~0 (+ (* 2 c_main_~j~0) (* 4294967296 .cse0) 1)) (<= (+ (* 4294967296 (div (+ c_main_~i~0 (* c_main_~j~0 (- 2)) (* .cse1 8589934592) 4294967291) 4294967296)) 3) c_main_~i~0) (<= c_main_~j~0 3) (< .cse1 (+ (div (div (+ c_main_~i~0 (* .cse0 (- 4294967296))) 2) 4294967296) 1)) (<= 0 .cse1))) is different from false [2020-10-15 00:01:00,781 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div c_main_~j~0 4294967296))) (and (<= 3 c_main_~j~0) (<= c_main_~j~0 15) (let ((.cse1 (div (+ c_main_~i~0 (* (div c_main_~i~0 4294967296) (- 4294967296))) 2))) (<= (+ (* 4294967296 .cse0) .cse1) (+ c_main_~j~0 (* 4294967296 (div .cse1 4294967296))))) (<= (+ (* 4294967296 (div (+ c_main_~i~0 (* c_main_~j~0 (- 2)) (* .cse0 8589934592) 4294967291) 4294967296)) 3) c_main_~i~0) (<= c_main_~j~0 3) (<= 0 .cse0))) is different from false [2020-10-15 00:01:03,066 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div c_main_~j~0 4294967296))) (and (<= c_main_~j~0 15) (<= c_main_~j~0 6) (= c_~SIZE~0 |c_old(~SIZE~0)|) (let ((.cse1 (div (+ c_main_~i~0 (* (div c_main_~i~0 4294967296) (- 4294967296))) 2))) (<= (+ (* 4294967296 .cse0) .cse1) (+ c_main_~j~0 (* 4294967296 (div .cse1 4294967296))))) (<= (+ (* 4294967296 (div (+ c_main_~i~0 (* c_main_~j~0 (- 2)) (* .cse0 8589934592) 4294967291) 4294967296)) 3) c_main_~i~0) (<= 6 c_main_~j~0) (<= 0 .cse0))) is different from false [2020-10-15 00:01:05,147 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div c_main_~i~0 4294967296)) (.cse1 (div c_main_~j~0 4294967296))) (and (<= c_main_~j~0 15) (<= c_main_~j~0 6) (<= c_main_~i~0 (+ (* 2 c_main_~j~0) (* 4294967296 .cse0) 1)) (<= (+ (* 4294967296 (div (+ c_main_~i~0 (* c_main_~j~0 (- 2)) (* .cse1 8589934592) 4294967291) 4294967296)) 3) c_main_~i~0) (<= 6 c_main_~j~0) (< .cse1 (+ (div (div (+ c_main_~i~0 (* .cse0 (- 4294967296))) 2) 4294967296) 1)) (<= 0 .cse1))) is different from false [2020-10-15 00:01:07,228 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div c_main_~j~0 4294967296))) (and (<= c_main_~j~0 15) (<= c_main_~j~0 6) (let ((.cse1 (div (+ c_main_~i~0 (* (div c_main_~i~0 4294967296) (- 4294967296))) 2))) (<= (+ (* 4294967296 .cse0) .cse1) (+ c_main_~j~0 (* 4294967296 (div .cse1 4294967296))))) (<= (+ (* 4294967296 (div (+ c_main_~i~0 (* c_main_~j~0 (- 2)) (* .cse0 8589934592) 4294967291) 4294967296)) 3) c_main_~i~0) (<= 6 c_main_~j~0) (<= 0 .cse0))) is different from false