/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/Problem13_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:29:56,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:29:56,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:29:56,222 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:29:56,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:29:56,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:29:56,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:29:56,227 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:29:56,229 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:29:56,230 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:29:56,231 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:29:56,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:29:56,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:29:56,234 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:29:56,235 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:29:56,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:29:56,237 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:29:56,238 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:29:56,240 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:29:56,241 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:29:56,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:29:56,244 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:29:56,245 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:29:56,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:29:56,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:29:56,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:29:56,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:29:56,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:29:56,255 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:29:56,256 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:29:56,256 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:29:56,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:29:56,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:29:56,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:29:56,264 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:29:56,264 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:29:56,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:29:56,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:29:56,271 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:29:56,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:29:56,276 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:29:56,277 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 21:29:56,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:29:56,320 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:29:56,322 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:29:56,322 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:29:56,322 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:29:56,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:29:56,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:29:56,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:29:56,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:29:56,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:29:56,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:29:56,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:29:56,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:29:56,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:29:56,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:29:56,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:29:56,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:29:56,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:29:56,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:29:56,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:29:56,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:29:56,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:29:56,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:29:56,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:29:56,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:29:56,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:29:56,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:29:56,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:29:56,329 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:29:56,329 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 21:29:56,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:29:56,695 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:29:56,701 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:29:56,703 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:29:56,704 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:29:56,704 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label31.c [2020-10-14 21:29:56,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c89aa07c6/9584f074a4aa46eaa7da7b384bd8115a/FLAG5786ebffb [2020-10-14 21:29:57,606 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:29:57,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label31.c [2020-10-14 21:29:57,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c89aa07c6/9584f074a4aa46eaa7da7b384bd8115a/FLAG5786ebffb [2020-10-14 21:29:58,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c89aa07c6/9584f074a4aa46eaa7da7b384bd8115a [2020-10-14 21:29:58,074 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:29:58,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:29:58,078 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:29:58,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:29:58,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:29:58,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:29:58" (1/1) ... [2020-10-14 21:29:58,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40826058 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:29:58, skipping insertion in model container [2020-10-14 21:29:58,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:29:58" (1/1) ... [2020-10-14 21:29:58,095 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:29:58,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:29:59,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:29:59,890 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:30:00,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:30:00,643 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:30:00,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:00 WrapperNode [2020-10-14 21:30:00,644 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:30:00,645 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:30:00,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:30:00,645 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:30:00,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:00" (1/1) ... [2020-10-14 21:30:00,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:00" (1/1) ... [2020-10-14 21:30:00,742 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:00" (1/1) ... [2020-10-14 21:30:00,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:00" (1/1) ... [2020-10-14 21:30:00,868 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:00" (1/1) ... [2020-10-14 21:30:00,901 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:00" (1/1) ... [2020-10-14 21:30:00,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:00" (1/1) ... [2020-10-14 21:30:00,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:30:00,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:30:00,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:30:00,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:30:00,975 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:00" (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 21:30:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:30:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:30:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:30:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:30:01,047 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:30:01,048 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:30:01,048 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:30:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:30:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:30:01,048 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:30:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:30:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:30:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:30:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:30:01,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:30:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:30:01,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:30:12,084 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:30:12,085 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:30:12,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:30:12 BoogieIcfgContainer [2020-10-14 21:30:12,099 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:30:12,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:30:12,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:30:12,104 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:30:12,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:29:58" (1/3) ... [2020-10-14 21:30:12,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9214e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:30:12, skipping insertion in model container [2020-10-14 21:30:12,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:30:00" (2/3) ... [2020-10-14 21:30:12,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b9214e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:30:12, skipping insertion in model container [2020-10-14 21:30:12,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:30:12" (3/3) ... [2020-10-14 21:30:12,107 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label31.c [2020-10-14 21:30:12,118 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:30:12,127 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:30:12,140 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:30:12,169 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:30:12,169 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:30:12,169 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:30:12,169 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:30:12,169 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:30:12,169 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:30:12,170 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:30:12,170 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:30:12,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:30:12,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-14 21:30:12,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:12,218 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] [2020-10-14 21:30:12,219 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:12,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:12,226 INFO L82 PathProgramCache]: Analyzing trace with hash -444424377, now seen corresponding path program 1 times [2020-10-14 21:30:12,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:12,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875193768] [2020-10-14 21:30:12,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:12,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:12,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:12,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-14 21:30:12,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:12,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-14 21:30:12,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:12,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:30:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:30:12,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-14 21:30:12,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:30:13,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:13,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:13,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:13,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:13,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:13,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:13,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:30:13,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:13,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:13,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:30:13,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:13,157 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 21:30:13,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [875193768] [2020-10-14 21:30:13,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:30:13,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:30:13,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637968513] [2020-10-14 21:30:13,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:30:13,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:30:13,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:30:13,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:30:13,186 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:30:26,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:30:26,662 INFO L93 Difference]: Finished difference Result 3243 states and 5948 transitions. [2020-10-14 21:30:26,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:30:26,665 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-10-14 21:30:26,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:30:26,709 INFO L225 Difference]: With dead ends: 3243 [2020-10-14 21:30:26,709 INFO L226 Difference]: Without dead ends: 2045 [2020-10-14 21:30:26,724 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 21:30:26,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2020-10-14 21:30:26,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1988. [2020-10-14 21:30:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2020-10-14 21:30:26,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 3533 transitions. [2020-10-14 21:30:26,915 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 3533 transitions. Word has length 46 [2020-10-14 21:30:26,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:30:26,916 INFO L479 AbstractCegarLoop]: Abstraction has 1988 states and 3533 transitions. [2020-10-14 21:30:26,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:30:26,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 3533 transitions. [2020-10-14 21:30:26,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-14 21:30:26,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:26,923 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:26,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:30:26,923 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:26,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:26,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1609543249, now seen corresponding path program 1 times [2020-10-14 21:30:26,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:26,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1586937597] [2020-10-14 21:30:26,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:27,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:27,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:28,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:28,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:28,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-14 21:30:28,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:30:28,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1556 [2020-10-14 21:30:28,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:28,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:30:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:30:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 21:30:28,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:30:28,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:28,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:28,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:28,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:28,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:28,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:30:28,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:28,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:28,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:28,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:30:28,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:28,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:30:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:28,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:28,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:28,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:30:28,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:28,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-14 21:30:28,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:28,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:30:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:30:28,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:30:28,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:29,079 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:30:29,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1586937597] [2020-10-14 21:30:29,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:30:29,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 21:30:29,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278291800] [2020-10-14 21:30:29,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:30:29,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:30:29,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:30:29,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:30:29,084 INFO L87 Difference]: Start difference. First operand 1988 states and 3533 transitions. Second operand 8 states. [2020-10-14 21:30:53,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:30:53,453 INFO L93 Difference]: Finished difference Result 7338 states and 13417 transitions. [2020-10-14 21:30:53,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:30:53,455 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 115 [2020-10-14 21:30:53,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:30:53,494 INFO L225 Difference]: With dead ends: 7338 [2020-10-14 21:30:53,494 INFO L226 Difference]: Without dead ends: 5356 [2020-10-14 21:30:53,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:30:53,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5356 states. [2020-10-14 21:30:53,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5356 to 5331. [2020-10-14 21:30:53,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5331 states. [2020-10-14 21:30:53,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5331 states to 5331 states and 8095 transitions. [2020-10-14 21:30:53,695 INFO L78 Accepts]: Start accepts. Automaton has 5331 states and 8095 transitions. Word has length 115 [2020-10-14 21:30:53,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:30:53,697 INFO L479 AbstractCegarLoop]: Abstraction has 5331 states and 8095 transitions. [2020-10-14 21:30:53,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:30:53,698 INFO L276 IsEmpty]: Start isEmpty. Operand 5331 states and 8095 transitions. [2020-10-14 21:30:53,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-14 21:30:53,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:30:53,708 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:30:53,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:30:53,709 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:30:53,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:30:53,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1861950749, now seen corresponding path program 1 times [2020-10-14 21:30:53,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:30:53,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1141036110] [2020-10-14 21:30:53,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:30:53,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:53,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:53,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:54,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:54,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:54,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-14 21:30:54,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:30:54,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 923 [2020-10-14 21:30:54,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:54,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:54,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:30:54,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:30:54,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:30:54,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:54,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:30:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:54,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:54,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:54,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:30:54,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:54,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:30:54,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:54,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:30:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:30:54,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:30:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:30:54,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:30:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:30:54,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:30:54,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:30:54,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:30:54,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:30:54,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-14 21:30:55,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:30:55,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:30:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:30:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:30:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:30:55,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:30:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:30:55,256 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1141036110] [2020-10-14 21:30:55,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:30:55,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:30:55,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789260349] [2020-10-14 21:30:55,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:30:55,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:30:55,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:30:55,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:30:55,329 INFO L87 Difference]: Start difference. First operand 5331 states and 8095 transitions. Second operand 7 states. [2020-10-14 21:31:23,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:31:23,730 INFO L93 Difference]: Finished difference Result 16024 states and 25154 transitions. [2020-10-14 21:31:23,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:31:23,732 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 121 [2020-10-14 21:31:23,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:31:23,787 INFO L225 Difference]: With dead ends: 16024 [2020-10-14 21:31:23,788 INFO L226 Difference]: Without dead ends: 10699 [2020-10-14 21:31:23,806 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 21:31:23,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10699 states. [2020-10-14 21:31:24,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10699 to 10504. [2020-10-14 21:31:24,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10504 states. [2020-10-14 21:31:24,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10504 states to 10504 states and 14857 transitions. [2020-10-14 21:31:24,139 INFO L78 Accepts]: Start accepts. Automaton has 10504 states and 14857 transitions. Word has length 121 [2020-10-14 21:31:24,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:31:24,148 INFO L479 AbstractCegarLoop]: Abstraction has 10504 states and 14857 transitions. [2020-10-14 21:31:24,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:31:24,148 INFO L276 IsEmpty]: Start isEmpty. Operand 10504 states and 14857 transitions. [2020-10-14 21:31:24,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-14 21:31:24,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:24,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:24,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:31:24,152 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:24,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:24,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1905322777, now seen corresponding path program 1 times [2020-10-14 21:31:24,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:24,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823014922] [2020-10-14 21:31:24,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:24,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:25,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:25,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-14 21:31:25,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:31:25,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 868 [2020-10-14 21:31:25,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:25,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:25,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:31:25,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:31:25,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-14 21:31:25,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:25,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:25,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:25,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:25,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:25,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:25,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:25,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:31:25,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:25,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:25,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:31:25,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:25,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:31:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:25,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:25,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:25,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 21:31:25,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:25,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-14 21:31:25,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:25,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:25,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:31:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:31:25,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:31:25,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:31:25,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823014922] [2020-10-14 21:31:25,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:31:25,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:31:25,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026365489] [2020-10-14 21:31:25,473 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:31:25,474 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:25,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:31:25,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:31:25,474 INFO L87 Difference]: Start difference. First operand 10504 states and 14857 transitions. Second operand 7 states. [2020-10-14 21:31:54,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:31:54,560 INFO L93 Difference]: Finished difference Result 30149 states and 44956 transitions. [2020-10-14 21:31:54,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:31:54,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 151 [2020-10-14 21:31:54,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:31:54,647 INFO L225 Difference]: With dead ends: 30149 [2020-10-14 21:31:54,647 INFO L226 Difference]: Without dead ends: 19651 [2020-10-14 21:31:54,678 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 21:31:54,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19651 states. [2020-10-14 21:31:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19651 to 19297. [2020-10-14 21:31:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19297 states. [2020-10-14 21:31:55,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19297 states to 19297 states and 26122 transitions. [2020-10-14 21:31:55,224 INFO L78 Accepts]: Start accepts. Automaton has 19297 states and 26122 transitions. Word has length 151 [2020-10-14 21:31:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:31:55,226 INFO L479 AbstractCegarLoop]: Abstraction has 19297 states and 26122 transitions. [2020-10-14 21:31:55,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:31:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 19297 states and 26122 transitions. [2020-10-14 21:31:55,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 21:31:55,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:55,230 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:31:55,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:31:55,230 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:55,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:55,231 INFO L82 PathProgramCache]: Analyzing trace with hash 896301401, now seen corresponding path program 1 times [2020-10-14 21:31:55,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:55,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041036570] [2020-10-14 21:31:55,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:55,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:55,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:55,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:57,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:57,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 21:31:57,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:31:57,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2103 [2020-10-14 21:31:57,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:57,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:57,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:31:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:31:57,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-14 21:31:57,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:57,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:57,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:57,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:57,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:57,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:31:57,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:57,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:57,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:57,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:31:57,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:57,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:31:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:57,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:57,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:58,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:58,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-14 21:31:58,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:31:58,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-14 21:31:58,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:58,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:58,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:31:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:31:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-14 21:31:58,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:58,260 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:31:58,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041036570] [2020-10-14 21:31:58,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:31:58,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:31:58,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431260626] [2020-10-14 21:31:58,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:31:58,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:58,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:31:58,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:31:58,263 INFO L87 Difference]: Start difference. First operand 19297 states and 26122 transitions. Second operand 7 states. [2020-10-14 21:32:22,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:32:22,582 INFO L93 Difference]: Finished difference Result 44786 states and 60761 transitions. [2020-10-14 21:32:22,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:32:22,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-14 21:32:22,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:32:22,696 INFO L225 Difference]: With dead ends: 44786 [2020-10-14 21:32:22,697 INFO L226 Difference]: Without dead ends: 25495 [2020-10-14 21:32:22,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:32:22,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25495 states. [2020-10-14 21:32:23,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25495 to 25274. [2020-10-14 21:32:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25274 states. [2020-10-14 21:32:23,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25274 states to 25274 states and 33259 transitions. [2020-10-14 21:32:23,343 INFO L78 Accepts]: Start accepts. Automaton has 25274 states and 33259 transitions. Word has length 166 [2020-10-14 21:32:23,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:32:23,344 INFO L479 AbstractCegarLoop]: Abstraction has 25274 states and 33259 transitions. [2020-10-14 21:32:23,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:32:23,345 INFO L276 IsEmpty]: Start isEmpty. Operand 25274 states and 33259 transitions. [2020-10-14 21:32:23,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2020-10-14 21:32:23,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:32:23,352 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:32:23,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:32:23,353 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:32:23,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:32:23,353 INFO L82 PathProgramCache]: Analyzing trace with hash -766756650, now seen corresponding path program 1 times [2020-10-14 21:32:23,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:32:23,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113172256] [2020-10-14 21:32:23,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:32:23,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:23,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:25,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:25,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:28,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:28,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-14 21:32:28,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:32:28,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 21:32:28,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:28,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:28,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 21:32:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:32:28,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 21:32:28,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:28,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:32:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:28,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:28,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:28,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:32:28,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:28,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:32:28,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:28,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:28,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:28,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:32:28,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:28,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:32:28,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:28,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:28,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:29,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:29,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:32:29,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:32:29,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-14 21:32:29,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:29,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:29,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:29,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:32:29,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:29,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:32:29,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:29,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:29,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:29,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:32:29,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:32:29,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-10-14 21:32:29,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:29,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:29,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:32:29,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 70 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-14 21:32:29,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113172256] [2020-10-14 21:32:29,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:32:29,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:32:29,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247683547] [2020-10-14 21:32:29,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:32:29,731 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:32:29,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:32:29,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:32:29,732 INFO L87 Difference]: Start difference. First operand 25274 states and 33259 transitions. Second operand 7 states. [2020-10-14 21:33:22,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:33:22,633 INFO L93 Difference]: Finished difference Result 68564 states and 95286 transitions. [2020-10-14 21:33:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 21:33:22,638 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 268 [2020-10-14 21:33:22,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:33:22,892 INFO L225 Difference]: With dead ends: 68564 [2020-10-14 21:33:22,892 INFO L226 Difference]: Without dead ends: 49042 [2020-10-14 21:33:22,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 21:33:23,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49042 states. [2020-10-14 21:33:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49042 to 37596. [2020-10-14 21:33:24,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37596 states. [2020-10-14 21:33:24,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37596 states to 37596 states and 51025 transitions. [2020-10-14 21:33:24,251 INFO L78 Accepts]: Start accepts. Automaton has 37596 states and 51025 transitions. Word has length 268 [2020-10-14 21:33:24,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:33:24,252 INFO L479 AbstractCegarLoop]: Abstraction has 37596 states and 51025 transitions. [2020-10-14 21:33:24,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:33:24,252 INFO L276 IsEmpty]: Start isEmpty. Operand 37596 states and 51025 transitions. [2020-10-14 21:33:24,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-14 21:33:24,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:33:24,273 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:33:24,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:33:24,274 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:33:24,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:33:24,274 INFO L82 PathProgramCache]: Analyzing trace with hash -702510063, now seen corresponding path program 1 times [2020-10-14 21:33:24,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:33:24,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44874798] [2020-10-14 21:33:24,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:33:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:24,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:24,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:24,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:25,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:26,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:28,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:29,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:29,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 357 [2020-10-14 21:33:29,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 21:33:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-14 21:33:29,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:29,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 21:33:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:33:29,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-14 21:33:29,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:33:29,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:33:29,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:29,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:29,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:29,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:33:29,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:29,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:33:29,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:29,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:29,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:33:29,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:33:29,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:33:29,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:29,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:33:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:29,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:29,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:29,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:29,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:33:29,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:33:29,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-14 21:33:29,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:29,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:29,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:33:29,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:33:29,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:33:29,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:29,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:33:30,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:30,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:30,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:30,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-14 21:33:30,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:33:30,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 490 [2020-10-14 21:33:30,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:30,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:33:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:33:30,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-14 21:33:30,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:30,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 21:33:30,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:30,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:30,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:30,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:33:30,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:30,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 21:33:30,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:30,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:33:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:33:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:33:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:33:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 243 proven. 4 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-14 21:33:30,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44874798] [2020-10-14 21:33:30,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:33:30,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:33:30,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628611357] [2020-10-14 21:33:30,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:33:30,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:33:30,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:33:30,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:33:30,873 INFO L87 Difference]: Start difference. First operand 37596 states and 51025 transitions. Second operand 8 states.