/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/eca-rers2012/Problem19_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:09:06,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:09:06,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:09:06,364 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:09:06,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:09:06,375 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:09:06,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:09:06,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:09:06,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:09:06,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:09:06,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:09:06,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:09:06,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:09:06,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:09:06,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:09:06,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:09:06,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:09:06,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:09:06,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:09:06,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:09:06,431 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:09:06,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:09:06,434 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:09:06,434 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:09:06,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:09:06,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:09:06,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:09:06,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:09:06,455 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:09:06,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:09:06,460 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:09:06,461 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:09:06,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:09:06,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:09:06,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:09:06,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:09:06,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:09:06,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:09:06,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:09:06,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:09:06,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:09:06,477 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 23:09:06,529 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:09:06,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:09:06,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:09:06,534 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:09:06,534 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:09:06,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:09:06,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:09:06,535 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:09:06,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:09:06,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:09:06,537 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:09:06,537 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:09:06,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:09:06,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:09:06,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:09:06,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:09:06,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:09:06,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:09:06,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:09:06,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:09:06,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:09:06,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:09:06,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:09:06,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:09:06,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:09:06,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:09:06,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:09:06,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:09:06,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:09:06,543 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 23:09:06,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:09:06,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:09:06,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:09:06,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:09:06,990 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:09:06,991 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label45.c [2020-10-14 23:09:07,062 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/002aac14c/8bbc7dc69d1d4301b4b09f15830c58ae/FLAG18f2c1e1f [2020-10-14 23:09:08,251 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:09:08,252 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label45.c [2020-10-14 23:09:08,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/002aac14c/8bbc7dc69d1d4301b4b09f15830c58ae/FLAG18f2c1e1f [2020-10-14 23:09:08,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/002aac14c/8bbc7dc69d1d4301b4b09f15830c58ae [2020-10-14 23:09:08,464 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:09:08,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:09:08,472 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:09:08,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:09:08,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:09:08,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:09:08" (1/1) ... [2020-10-14 23:09:08,486 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f159ca9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:08, skipping insertion in model container [2020-10-14 23:09:08,486 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:09:08" (1/1) ... [2020-10-14 23:09:08,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:09:08,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:09:11,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:09:11,555 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:09:12,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:09:12,755 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:09:12,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:12 WrapperNode [2020-10-14 23:09:12,756 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:09:12,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:09:12,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:09:12,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:09:12,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:12" (1/1) ... [2020-10-14 23:09:12,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:12" (1/1) ... [2020-10-14 23:09:12,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:12" (1/1) ... [2020-10-14 23:09:12,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:12" (1/1) ... [2020-10-14 23:09:13,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:12" (1/1) ... [2020-10-14 23:09:13,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:12" (1/1) ... [2020-10-14 23:09:13,455 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:12" (1/1) ... [2020-10-14 23:09:13,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:09:13,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:09:13,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:09:13,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:09:13,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:12" (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 23:09:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:09:13,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:09:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 23:09:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 23:09:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 23:09:13,631 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 23:09:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 23:09:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 23:09:13,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:09:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 23:09:13,632 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 23:09:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 23:09:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 23:09:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 23:09:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 23:09:13,633 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:09:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:09:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:09:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:09:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:09:13,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:09:28,067 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:09:28,067 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:09:28,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:09:28 BoogieIcfgContainer [2020-10-14 23:09:28,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:09:28,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:09:28,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:09:28,090 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:09:28,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:09:08" (1/3) ... [2020-10-14 23:09:28,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a377a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:09:28, skipping insertion in model container [2020-10-14 23:09:28,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:09:12" (2/3) ... [2020-10-14 23:09:28,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a377a7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:09:28, skipping insertion in model container [2020-10-14 23:09:28,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:09:28" (3/3) ... [2020-10-14 23:09:28,095 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label45.c [2020-10-14 23:09:28,108 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:09:28,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:09:28,139 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:09:28,176 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:09:28,177 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:09:28,177 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:09:28,177 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:09:28,177 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:09:28,177 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:09:28,177 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:09:28,178 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:09:28,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 23:09:28,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 23:09:28,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:09:28,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:09:28,245 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:09:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:09:28,253 INFO L82 PathProgramCache]: Analyzing trace with hash -522385732, now seen corresponding path program 1 times [2020-10-14 23:09:28,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:09:28,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989461477] [2020-10-14 23:09:28,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:09:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:28,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:28,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:28,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:09:28,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:28,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-10-14 23:09:28,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:28,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:09:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:09:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 23:09:28,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 23:09:29,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:09:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:29,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:29,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:29,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:09:29,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:29,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 23:09:29,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:29,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:09:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:09:29,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:09:29,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:29,294 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 23:09:29,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989461477] [2020-10-14 23:09:29,298 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:09:29,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:09:29,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711685754] [2020-10-14 23:09:29,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:09:29,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:09:29,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:09:29,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:09:29,330 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 23:09:53,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:09:53,784 INFO L93 Difference]: Finished difference Result 5038 states and 9462 transitions. [2020-10-14 23:09:53,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:09:53,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 23:09:53,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:09:53,830 INFO L225 Difference]: With dead ends: 5038 [2020-10-14 23:09:53,831 INFO L226 Difference]: Without dead ends: 3197 [2020-10-14 23:09:53,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:09:53,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3197 states. [2020-10-14 23:09:54,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3197 to 3192. [2020-10-14 23:09:54,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3192 states. [2020-10-14 23:09:54,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3192 states to 3192 states and 5230 transitions. [2020-10-14 23:09:54,047 INFO L78 Accepts]: Start accepts. Automaton has 3192 states and 5230 transitions. Word has length 53 [2020-10-14 23:09:54,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:09:54,048 INFO L479 AbstractCegarLoop]: Abstraction has 3192 states and 5230 transitions. [2020-10-14 23:09:54,049 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:09:54,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3192 states and 5230 transitions. [2020-10-14 23:09:54,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-14 23:09:54,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:09:54,056 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:09:54,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:09:54,056 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:09:54,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:09:54,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1707413285, now seen corresponding path program 1 times [2020-10-14 23:09:54,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:09:54,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687430344] [2020-10-14 23:09:54,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:09:54,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:54,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:54,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:54,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:54,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:55,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:56,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:56,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:56,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 23:09:56,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:09:56,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2200 [2020-10-14 23:09:56,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:56,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:09:56,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:09:56,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-14 23:09:56,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:09:56,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:09:56,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:56,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:56,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:56,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:09:56,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:09:56,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:09:56,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:56,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:09:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:09:56,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:09:56,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:56,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:09:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:09:56,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:56,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:56,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:09:56,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:09:56,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 23:09:56,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:09:56,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-14 23:09:56,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:09:56,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:09:56,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:09:56,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:09:56,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 23:09:56,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:09:56,774 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:09:56,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687430344] [2020-10-14 23:09:56,775 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:09:56,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:09:56,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838341631] [2020-10-14 23:09:56,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:09:56,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:09:56,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:09:56,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:09:56,780 INFO L87 Difference]: Start difference. First operand 3192 states and 5230 transitions. Second operand 7 states. [2020-10-14 23:10:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:10:35,533 INFO L93 Difference]: Finished difference Result 9488 states and 15656 transitions. [2020-10-14 23:10:35,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:10:35,535 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 126 [2020-10-14 23:10:35,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:10:35,580 INFO L225 Difference]: With dead ends: 9488 [2020-10-14 23:10:35,580 INFO L226 Difference]: Without dead ends: 6302 [2020-10-14 23:10:35,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:10:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6302 states. [2020-10-14 23:10:35,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6302 to 6171. [2020-10-14 23:10:35,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6171 states. [2020-10-14 23:10:35,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6171 states to 6171 states and 8878 transitions. [2020-10-14 23:10:35,791 INFO L78 Accepts]: Start accepts. Automaton has 6171 states and 8878 transitions. Word has length 126 [2020-10-14 23:10:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:10:35,793 INFO L479 AbstractCegarLoop]: Abstraction has 6171 states and 8878 transitions. [2020-10-14 23:10:35,793 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:10:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 6171 states and 8878 transitions. [2020-10-14 23:10:35,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-14 23:10:35,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:10:35,809 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:10:35,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:10:35,812 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:10:35,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:10:35,812 INFO L82 PathProgramCache]: Analyzing trace with hash -56922798, now seen corresponding path program 1 times [2020-10-14 23:10:35,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:10:35,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643986612] [2020-10-14 23:10:35,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:10:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:35,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:36,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:36,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:36,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-14 23:10:36,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:10:36,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 813 [2020-10-14 23:10:36,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:36,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:10:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:10:36,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-14 23:10:36,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:10:36,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:10:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:36,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:36,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:36,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:10:36,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:36,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:10:36,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:36,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:36,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:10:36,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:10:36,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:10:36,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:10:36,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:10:36,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:10:36,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:10:36,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:10:36,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-14 23:10:36,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:10:36,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 23:10:36,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:10:36,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:10:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:10:36,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:10:36,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 23:10:36,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:10:37,017 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:10:37,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643986612] [2020-10-14 23:10:37,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:10:37,018 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:10:37,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457503957] [2020-10-14 23:10:37,020 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:10:37,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:10:37,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:10:37,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:10:37,022 INFO L87 Difference]: Start difference. First operand 6171 states and 8878 transitions. Second operand 7 states. [2020-10-14 23:11:20,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:11:20,369 INFO L93 Difference]: Finished difference Result 18739 states and 27274 transitions. [2020-10-14 23:11:20,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:11:20,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-14 23:11:20,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:11:20,440 INFO L225 Difference]: With dead ends: 18739 [2020-10-14 23:11:20,440 INFO L226 Difference]: Without dead ends: 12574 [2020-10-14 23:11:20,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:11:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12574 states. [2020-10-14 23:11:20,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12574 to 12340. [2020-10-14 23:11:20,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12340 states. [2020-10-14 23:11:20,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12340 states to 12340 states and 17416 transitions. [2020-10-14 23:11:20,865 INFO L78 Accepts]: Start accepts. Automaton has 12340 states and 17416 transitions. Word has length 134 [2020-10-14 23:11:20,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:11:20,867 INFO L479 AbstractCegarLoop]: Abstraction has 12340 states and 17416 transitions. [2020-10-14 23:11:20,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:11:20,868 INFO L276 IsEmpty]: Start isEmpty. Operand 12340 states and 17416 transitions. [2020-10-14 23:11:20,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-14 23:11:20,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:11:20,871 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:11:20,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:11:20,871 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:11:20,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:11:20,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1898798504, now seen corresponding path program 1 times [2020-10-14 23:11:20,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:11:20,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675927214] [2020-10-14 23:11:20,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:11:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:20,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:21,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:22,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:22,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:22,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-14 23:11:22,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:11:22,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1861 [2020-10-14 23:11:22,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:22,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:11:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:11:22,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-14 23:11:22,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:22,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:11:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:22,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:22,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:22,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:11:22,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:11:22,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:11:22,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:22,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:11:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:11:22,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:11:22,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:22,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:11:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:11:22,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:11:23,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:11:23,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 23:11:23,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:11:23,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 23:11:23,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:11:23,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:11:23,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:11:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:11:23,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-14 23:11:23,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:11:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:11:23,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675927214] [2020-10-14 23:11:23,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:11:23,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:11:23,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722504628] [2020-10-14 23:11:23,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:11:23,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:11:23,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:11:23,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:11:23,344 INFO L87 Difference]: Start difference. First operand 12340 states and 17416 transitions. Second operand 7 states. [2020-10-14 23:12:24,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:12:24,266 INFO L93 Difference]: Finished difference Result 31440 states and 44593 transitions. [2020-10-14 23:12:24,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:12:24,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-10-14 23:12:24,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:12:24,348 INFO L225 Difference]: With dead ends: 31440 [2020-10-14 23:12:24,349 INFO L226 Difference]: Without dead ends: 19106 [2020-10-14 23:12:24,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:12:24,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19106 states. [2020-10-14 23:12:24,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19106 to 16853. [2020-10-14 23:12:24,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16853 states. [2020-10-14 23:12:24,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16853 states to 16853 states and 22454 transitions. [2020-10-14 23:12:24,816 INFO L78 Accepts]: Start accepts. Automaton has 16853 states and 22454 transitions. Word has length 154 [2020-10-14 23:12:24,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:12:24,818 INFO L479 AbstractCegarLoop]: Abstraction has 16853 states and 22454 transitions. [2020-10-14 23:12:24,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:12:24,818 INFO L276 IsEmpty]: Start isEmpty. Operand 16853 states and 22454 transitions. [2020-10-14 23:12:24,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-14 23:12:24,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:12:24,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:12:24,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:12:24,823 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:12:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:12:24,824 INFO L82 PathProgramCache]: Analyzing trace with hash 364800299, now seen corresponding path program 1 times [2020-10-14 23:12:24,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:12:24,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548903362] [2020-10-14 23:12:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:12:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:25,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:26,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:26,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-14 23:12:26,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:12:26,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1511 [2020-10-14 23:12:26,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:26,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:26,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:12:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:12:26,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 23:12:26,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:26,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:12:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:26,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:26,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:26,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:12:26,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:26,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:12:26,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:26,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:26,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 23:12:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:12:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 23:12:26,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:26,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 23:12:26,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:12:26,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:12:26,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:12:26,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-14 23:12:26,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:12:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-14 23:12:26,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:12:26,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:12:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:12:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 23:12:26,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-14 23:12:26,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:12:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:12:27,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548903362] [2020-10-14 23:12:27,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:12:27,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:12:27,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136008553] [2020-10-14 23:12:27,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:12:27,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:12:27,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:12:27,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:12:27,124 INFO L87 Difference]: Start difference. First operand 16853 states and 22454 transitions. Second operand 7 states.