/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/Problem12_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:07:21,034 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:07:21,037 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:07:21,077 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:07:21,078 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:07:21,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:07:21,091 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:07:21,094 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:07:21,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:07:21,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:07:21,101 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:07:21,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:07:21,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:07:21,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:07:21,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:07:21,111 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:07:21,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:07:21,113 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:07:21,115 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:07:21,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:07:21,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:07:21,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:07:21,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:07:21,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:07:21,134 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:07:21,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:07:21,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:07:21,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:07:21,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:07:21,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:07:21,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:07:21,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:07:21,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:07:21,140 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:07:21,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:07:21,142 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:07:21,142 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:07:21,143 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:07:21,143 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:07:21,144 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:07:21,145 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:07:21,146 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 21:07:21,190 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:07:21,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:07:21,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:07:21,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:07:21,193 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:07:21,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:07:21,194 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:07:21,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:07:21,194 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:07:21,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:07:21,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:07:21,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:07:21,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:07:21,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:07:21,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:07:21,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:07:21,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:07:21,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:07:21,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:07:21,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:07:21,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:07:21,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:07:21,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:07:21,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:07:21,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:07:21,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:07:21,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:07:21,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:07:21,200 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:07:21,200 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 21:07:21,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:07:21,523 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:07:21,527 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:07:21,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:07:21,529 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:07:21,530 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label10.c [2020-10-14 21:07:21,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24f63d6c4/156b023ada4e4b47a0b05de757144a18/FLAG0b83dcc0b [2020-10-14 21:07:22,373 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:07:22,374 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label10.c [2020-10-14 21:07:22,406 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24f63d6c4/156b023ada4e4b47a0b05de757144a18/FLAG0b83dcc0b [2020-10-14 21:07:22,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24f63d6c4/156b023ada4e4b47a0b05de757144a18 [2020-10-14 21:07:22,510 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:07:22,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:07:22,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:07:22,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:07:22,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:07:22,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:07:22" (1/1) ... [2020-10-14 21:07:22,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4076c4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:22, skipping insertion in model container [2020-10-14 21:07:22,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:07:22" (1/1) ... [2020-10-14 21:07:22,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:07:22,679 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:07:24,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:07:24,085 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:07:24,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:07:24,791 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:07:24,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:24 WrapperNode [2020-10-14 21:07:24,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:07:24,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:07:24,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:07:24,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:07:24,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:24" (1/1) ... [2020-10-14 21:07:24,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:24" (1/1) ... [2020-10-14 21:07:24,877 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:24" (1/1) ... [2020-10-14 21:07:24,878 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:24" (1/1) ... [2020-10-14 21:07:24,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:24" (1/1) ... [2020-10-14 21:07:25,022 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:24" (1/1) ... [2020-10-14 21:07:25,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:24" (1/1) ... [2020-10-14 21:07:25,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:07:25,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:07:25,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:07:25,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:07:25,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:24" (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 21:07:25,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:07:25,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:07:25,192 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:07:25,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:07:25,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:07:25,193 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:07:25,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:07:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:07:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:07:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:07:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:07:25,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:07:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:07:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:07:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:07:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:07:25,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:07:30,549 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:07:30,550 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:07:30,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:07:30 BoogieIcfgContainer [2020-10-14 21:07:30,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:07:30,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:07:30,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:07:30,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:07:30,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:07:22" (1/3) ... [2020-10-14 21:07:30,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca71abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:07:30, skipping insertion in model container [2020-10-14 21:07:30,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:07:24" (2/3) ... [2020-10-14 21:07:30,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca71abb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:07:30, skipping insertion in model container [2020-10-14 21:07:30,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:07:30" (3/3) ... [2020-10-14 21:07:30,582 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label10.c [2020-10-14 21:07:30,595 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:07:30,607 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:07:30,624 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:07:30,657 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:07:30,658 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:07:30,658 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:07:30,658 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:07:30,658 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:07:30,658 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:07:30,659 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:07:30,659 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:07:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:07:30,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 21:07:30,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:30,713 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] [2020-10-14 21:07:30,714 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:30,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:30,721 INFO L82 PathProgramCache]: Analyzing trace with hash 384114234, now seen corresponding path program 1 times [2020-10-14 21:07:30,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:30,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202986842] [2020-10-14 21:07:30,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:31,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:31,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:31,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 21:07:31,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:31,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 398 [2020-10-14 21:07:31,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:31,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:31,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:07:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 21:07:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:07:31,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:31,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:31,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:31,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:31,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:31,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:31,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 21:07:31,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:31,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:31,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:31,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:31,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:31,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:07:31,541 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 21:07:31,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202986842] [2020-10-14 21:07:31,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:07:31,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:07:31,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735545303] [2020-10-14 21:07:31,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:07:31,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:31,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:07:31,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:07:31,574 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:07:39,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:39,712 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:07:39,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:07:39,714 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-14 21:07:39,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:39,744 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:07:39,745 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:07:39,764 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 21:07:39,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:07:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:07:39,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:07:39,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2725 transitions. [2020-10-14 21:07:39,943 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2725 transitions. Word has length 33 [2020-10-14 21:07:39,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:39,944 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2725 transitions. [2020-10-14 21:07:39,944 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:07:39,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2725 transitions. [2020-10-14 21:07:39,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-14 21:07:39,950 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:39,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:39,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:07:39,951 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:39,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:39,952 INFO L82 PathProgramCache]: Analyzing trace with hash -2121288409, now seen corresponding path program 1 times [2020-10-14 21:07:39,952 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:39,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841895424] [2020-10-14 21:07:39,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:40,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:40,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:40,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:40,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:40,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-14 21:07:40,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:07:40,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 900 [2020-10-14 21:07:40,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:40,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:40,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:07:40,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:40,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 21:07:40,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:07:40,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:40,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:40,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:40,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:40,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:40,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:07:40,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:40,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:40,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:40,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:41,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:41,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:41,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:41,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:41,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:41,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:07:41,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:41,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 21:07:41,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:41,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-14 21:07:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:41,217 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:07:41,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841895424] [2020-10-14 21:07:41,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:41,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:07:41,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087875115] [2020-10-14 21:07:41,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:07:41,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:41,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:07:41,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:07:41,223 INFO L87 Difference]: Start difference. First operand 1553 states and 2725 transitions. Second operand 5 states. [2020-10-14 21:07:50,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:07:50,298 INFO L93 Difference]: Finished difference Result 4668 states and 8253 transitions. [2020-10-14 21:07:50,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:07:50,299 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-14 21:07:50,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:07:50,318 INFO L225 Difference]: With dead ends: 4668 [2020-10-14 21:07:50,318 INFO L226 Difference]: Without dead ends: 3121 [2020-10-14 21:07:50,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:07:50,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3121 states. [2020-10-14 21:07:50,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3121 to 3109. [2020-10-14 21:07:50,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3109 states. [2020-10-14 21:07:50,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3109 states to 3109 states and 4586 transitions. [2020-10-14 21:07:50,424 INFO L78 Accepts]: Start accepts. Automaton has 3109 states and 4586 transitions. Word has length 102 [2020-10-14 21:07:50,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:07:50,424 INFO L479 AbstractCegarLoop]: Abstraction has 3109 states and 4586 transitions. [2020-10-14 21:07:50,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:07:50,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3109 states and 4586 transitions. [2020-10-14 21:07:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-14 21:07:50,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:07:50,430 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:07:50,430 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:07:50,430 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:07:50,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:07:50,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1551243859, now seen corresponding path program 1 times [2020-10-14 21:07:50,431 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:07:50,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [98116873] [2020-10-14 21:07:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:07:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:50,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:50,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:51,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:51,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 21:07:51,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:07:51,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-10-14 21:07:51,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:51,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:51,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:07:51,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:07:51,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:07:51,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:51,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:07:51,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:51,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:51,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:51,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:07:51,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:51,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:07:51,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:51,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:07:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:07:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:07:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:51,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:07:51,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:07:51,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:07:51,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:07:51,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:07:51,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:07:51,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-14 21:07:51,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:07:51,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:07:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:07:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:07:51,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:07:51,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:07:51,510 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:07:51,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [98116873] [2020-10-14 21:07:51,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:07:51,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:07:51,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965379466] [2020-10-14 21:07:51,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:07:51,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:07:51,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:07:51,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:07:51,514 INFO L87 Difference]: Start difference. First operand 3109 states and 4586 transitions. Second operand 6 states. [2020-10-14 21:08:01,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:01,816 INFO L93 Difference]: Finished difference Result 9362 states and 13957 transitions. [2020-10-14 21:08:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:08:01,817 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-14 21:08:01,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:01,853 INFO L225 Difference]: With dead ends: 9362 [2020-10-14 21:08:01,853 INFO L226 Difference]: Without dead ends: 6259 [2020-10-14 21:08:01,863 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:08:01,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6259 states. [2020-10-14 21:08:02,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6259 to 6249. [2020-10-14 21:08:02,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6249 states. [2020-10-14 21:08:02,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6249 states to 6249 states and 8312 transitions. [2020-10-14 21:08:02,044 INFO L78 Accepts]: Start accepts. Automaton has 6249 states and 8312 transitions. Word has length 108 [2020-10-14 21:08:02,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:02,044 INFO L479 AbstractCegarLoop]: Abstraction has 6249 states and 8312 transitions. [2020-10-14 21:08:02,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:08:02,045 INFO L276 IsEmpty]: Start isEmpty. Operand 6249 states and 8312 transitions. [2020-10-14 21:08:02,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-14 21:08:02,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:02,047 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:02,048 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:08:02,048 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:02,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:02,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1683257415, now seen corresponding path program 1 times [2020-10-14 21:08:02,049 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:02,049 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311212940] [2020-10-14 21:08:02,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:02,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:02,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:02,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:02,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:02,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-14 21:08:02,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:02,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 579 [2020-10-14 21:08:02,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:02,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:02,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:08:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:08:02,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:02,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:02,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:02,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:02,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:02,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:08:02,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:02,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:02,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:08:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:02,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:02,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:02,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:02,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:02,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 21:08:02,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:02,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-14 21:08:02,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:02,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:02,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:02,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-14 21:08:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:08:02,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311212940] [2020-10-14 21:08:02,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:08:02,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:08:02,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265639716] [2020-10-14 21:08:02,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:02,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:02,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:02,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:02,993 INFO L87 Difference]: Start difference. First operand 6249 states and 8312 transitions. Second operand 7 states. [2020-10-14 21:08:15,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:15,032 INFO L93 Difference]: Finished difference Result 18218 states and 24937 transitions. [2020-10-14 21:08:15,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:08:15,034 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-14 21:08:15,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:15,099 INFO L225 Difference]: With dead ends: 18218 [2020-10-14 21:08:15,100 INFO L226 Difference]: Without dead ends: 11975 [2020-10-14 21:08:15,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:08:15,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11975 states. [2020-10-14 21:08:15,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11975 to 11876. [2020-10-14 21:08:15,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11876 states. [2020-10-14 21:08:15,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11876 states to 11876 states and 15188 transitions. [2020-10-14 21:08:15,596 INFO L78 Accepts]: Start accepts. Automaton has 11876 states and 15188 transitions. Word has length 118 [2020-10-14 21:08:15,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:15,598 INFO L479 AbstractCegarLoop]: Abstraction has 11876 states and 15188 transitions. [2020-10-14 21:08:15,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:15,598 INFO L276 IsEmpty]: Start isEmpty. Operand 11876 states and 15188 transitions. [2020-10-14 21:08:15,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-14 21:08:15,611 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:15,612 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, 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] [2020-10-14 21:08:15,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:08:15,612 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:15,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:15,613 INFO L82 PathProgramCache]: Analyzing trace with hash -977995657, now seen corresponding path program 1 times [2020-10-14 21:08:15,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:15,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576131072] [2020-10-14 21:08:15,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:15,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:15,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:15,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:16,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:16,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:16,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-14 21:08:16,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:08:16,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1270 [2020-10-14 21:08:16,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:16,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:16,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:16,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:08:16,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:08:16,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:17,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:17,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:17,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:17,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:17,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:17,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:08:17,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:17,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:17,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:17,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:17,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:17,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:17,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:17,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:08:17,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:17,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 21:08:17,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:17,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:17,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:17,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:17,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:08:17,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 21:08:17,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:08:17,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:17,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:17,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:17,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:08:17,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:17,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 21:08:17,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:17,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:17,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:17,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:17,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:08:17,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 124 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:08:17,623 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576131072] [2020-10-14 21:08:17,624 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:08:17,633 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:08:17,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661232780] [2020-10-14 21:08:17,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:08:17,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:17,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:08:17,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:08:17,636 INFO L87 Difference]: Start difference. First operand 11876 states and 15188 transitions. Second operand 8 states. [2020-10-14 21:08:37,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:37,133 INFO L93 Difference]: Finished difference Result 25826 states and 36648 transitions. [2020-10-14 21:08:37,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:08:37,137 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 208 [2020-10-14 21:08:37,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:37,223 INFO L225 Difference]: With dead ends: 25826 [2020-10-14 21:08:37,223 INFO L226 Difference]: Without dead ends: 13163 [2020-10-14 21:08:37,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:08:37,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13163 states. [2020-10-14 21:08:37,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13163 to 12874. [2020-10-14 21:08:37,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12874 states. [2020-10-14 21:08:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12874 states to 12874 states and 17227 transitions. [2020-10-14 21:08:37,633 INFO L78 Accepts]: Start accepts. Automaton has 12874 states and 17227 transitions. Word has length 208 [2020-10-14 21:08:37,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:37,634 INFO L479 AbstractCegarLoop]: Abstraction has 12874 states and 17227 transitions. [2020-10-14 21:08:37,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:08:37,634 INFO L276 IsEmpty]: Start isEmpty. Operand 12874 states and 17227 transitions. [2020-10-14 21:08:37,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-14 21:08:37,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:37,638 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:08:37,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:08:37,638 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:37,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:37,639 INFO L82 PathProgramCache]: Analyzing trace with hash 25027211, now seen corresponding path program 1 times [2020-10-14 21:08:37,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:37,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162940606] [2020-10-14 21:08:37,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:37,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:38,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:39,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:39,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-14 21:08:39,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:08:39,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2152 [2020-10-14 21:08:39,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:39,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:08:39,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 205 [2020-10-14 21:08:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:39,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:39,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:39,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:39,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:39,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:39,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:08:39,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:39,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:39,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:08:39,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:39,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:08:39,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:40,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:40,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:40,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:40,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:40,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-14 21:08:40,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:40,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 336 [2020-10-14 21:08:40,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:40,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:08:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:08:40,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-14 21:08:40,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:40,878 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:08:40,879 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162940606] [2020-10-14 21:08:40,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:08:40,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:08:40,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247409428] [2020-10-14 21:08:40,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:08:40,881 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:08:40,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:08:40,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:08:40,881 INFO L87 Difference]: Start difference. First operand 12874 states and 17227 transitions. Second operand 7 states. [2020-10-14 21:08:55,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:08:55,742 INFO L93 Difference]: Finished difference Result 31517 states and 46971 transitions. [2020-10-14 21:08:55,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:08:55,744 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 232 [2020-10-14 21:08:55,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:08:55,876 INFO L225 Difference]: With dead ends: 31517 [2020-10-14 21:08:55,876 INFO L226 Difference]: Without dead ends: 19416 [2020-10-14 21:08:55,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 21:08:55,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19416 states. [2020-10-14 21:08:57,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19416 to 18851. [2020-10-14 21:08:57,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18851 states. [2020-10-14 21:08:58,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18851 states to 18851 states and 24779 transitions. [2020-10-14 21:08:58,016 INFO L78 Accepts]: Start accepts. Automaton has 18851 states and 24779 transitions. Word has length 232 [2020-10-14 21:08:58,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:08:58,017 INFO L479 AbstractCegarLoop]: Abstraction has 18851 states and 24779 transitions. [2020-10-14 21:08:58,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:08:58,017 INFO L276 IsEmpty]: Start isEmpty. Operand 18851 states and 24779 transitions. [2020-10-14 21:08:58,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-14 21:08:58,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:08:58,022 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:08:58,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:08:58,023 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:08:58,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:08:58,024 INFO L82 PathProgramCache]: Analyzing trace with hash -239337618, now seen corresponding path program 1 times [2020-10-14 21:08:58,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:08:58,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1785826549] [2020-10-14 21:08:58,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:08:58,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:58,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:58,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:59,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:59,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:59,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-14 21:08:59,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:08:59,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1524 [2020-10-14 21:08:59,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:59,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:08:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:08:59,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-14 21:08:59,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:08:59,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:59,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:08:59,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:08:59,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:08:59,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:08:59,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:08:59,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:08:59,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:08:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:08:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:08:59,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:08:59,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:08:59,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:08:59,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:08:59,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:00,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:00,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:09:00,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:00,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-14 21:09:00,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:00,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:00,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:00,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:09:00,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:09:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:00,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:00,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:00,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:00,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:09:00,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:09:00,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 21:09:00,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:00,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:09:00,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:00,368 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 52 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:09:00,369 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1785826549] [2020-10-14 21:09:00,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:00,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:09:00,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051633499] [2020-10-14 21:09:00,372 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:09:00,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:00,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:09:00,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:09:00,374 INFO L87 Difference]: Start difference. First operand 18851 states and 24779 transitions. Second operand 6 states. [2020-10-14 21:09:26,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:26,083 INFO L93 Difference]: Finished difference Result 70790 states and 99363 transitions. [2020-10-14 21:09:26,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:09:26,088 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 253 [2020-10-14 21:09:26,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:26,242 INFO L225 Difference]: With dead ends: 70790 [2020-10-14 21:09:26,242 INFO L226 Difference]: Without dead ends: 51047 [2020-10-14 21:09:26,309 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:09:26,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51047 states. [2020-10-14 21:09:27,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51047 to 50261. [2020-10-14 21:09:27,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50261 states. [2020-10-14 21:09:27,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50261 states to 50261 states and 63815 transitions. [2020-10-14 21:09:27,856 INFO L78 Accepts]: Start accepts. Automaton has 50261 states and 63815 transitions. Word has length 253 [2020-10-14 21:09:27,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:27,857 INFO L479 AbstractCegarLoop]: Abstraction has 50261 states and 63815 transitions. [2020-10-14 21:09:27,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:09:27,857 INFO L276 IsEmpty]: Start isEmpty. Operand 50261 states and 63815 transitions. [2020-10-14 21:09:27,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-14 21:09:27,866 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:27,867 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:09:27,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:09:27,868 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:27,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:27,868 INFO L82 PathProgramCache]: Analyzing trace with hash -1950227678, now seen corresponding path program 1 times [2020-10-14 21:09:27,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:27,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2034894142] [2020-10-14 21:09:27,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:27,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:27,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:28,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:29,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:29,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:29,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-14 21:09:29,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:09:29,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1480 [2020-10-14 21:09:29,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:29,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:29,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:09:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:09:29,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-14 21:09:29,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:29,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:29,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:29,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:29,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:29,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:29,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:29,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:09:29,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:29,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:29,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:29,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:29,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:29,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:29,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:29,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:29,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:29,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:09:29,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:29,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 21:09:29,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:29,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:29,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:29,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:29,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:09:29,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:29,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:09:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:29,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:30,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:30,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:09:30,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:09:30,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 21:09:30,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:30,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:30,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:30,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:09:30,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:30,087 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-14 21:09:30,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2034894142] [2020-10-14 21:09:30,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:30,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:09:30,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826163266] [2020-10-14 21:09:30,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:09:30,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:30,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:09:30,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:09:30,090 INFO L87 Difference]: Start difference. First operand 50261 states and 63815 transitions. Second operand 5 states. [2020-10-14 21:09:47,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:09:47,600 INFO L93 Difference]: Finished difference Result 116213 states and 152239 transitions. [2020-10-14 21:09:47,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:09:47,602 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 271 [2020-10-14 21:09:47,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:09:49,399 INFO L225 Difference]: With dead ends: 116213 [2020-10-14 21:09:49,400 INFO L226 Difference]: Without dead ends: 65886 [2020-10-14 21:09:49,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:09:49,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65886 states. [2020-10-14 21:09:50,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65886 to 65884. [2020-10-14 21:09:50,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65884 states. [2020-10-14 21:09:51,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65884 states to 65884 states and 85606 transitions. [2020-10-14 21:09:51,020 INFO L78 Accepts]: Start accepts. Automaton has 65884 states and 85606 transitions. Word has length 271 [2020-10-14 21:09:51,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:09:51,021 INFO L479 AbstractCegarLoop]: Abstraction has 65884 states and 85606 transitions. [2020-10-14 21:09:51,021 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:09:51,022 INFO L276 IsEmpty]: Start isEmpty. Operand 65884 states and 85606 transitions. [2020-10-14 21:09:51,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-14 21:09:51,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:09:51,027 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:09:51,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:09:51,027 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:09:51,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:09:51,028 INFO L82 PathProgramCache]: Analyzing trace with hash -251440521, now seen corresponding path program 1 times [2020-10-14 21:09:51,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:09:51,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273490424] [2020-10-14 21:09:51,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:09:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:51,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:51,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:52,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:52,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-14 21:09:52,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:09:52,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1134 [2020-10-14 21:09:52,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:52,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:09:52,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-14 21:09:52,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:09:52,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:09:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:52,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:52,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:52,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:09:52,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:52,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:09:52,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:52,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:52,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:09:52,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:52,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:09:52,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:52,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:09:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:52,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:52,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:52,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:09:52,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:52,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-14 21:09:52,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:52,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:09:52,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:09:52,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:09:52,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:52,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:09:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:09:52,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:09:53,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:09:53,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 21:09:53,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:09:53,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 21:09:53,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:09:53,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:09:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:09:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:09:53,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 21:09:53,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:09:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:09:53,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273490424] [2020-10-14 21:09:53,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:09:53,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:09:53,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769824067] [2020-10-14 21:09:53,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:09:53,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:09:53,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:09:53,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:09:53,225 INFO L87 Difference]: Start difference. First operand 65884 states and 85606 transitions. Second operand 7 states. [2020-10-14 21:10:18,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:18,847 INFO L93 Difference]: Finished difference Result 153872 states and 212586 transitions. [2020-10-14 21:10:18,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:10:18,850 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-14 21:10:18,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:19,339 INFO L225 Difference]: With dead ends: 153872 [2020-10-14 21:10:19,339 INFO L226 Difference]: Without dead ends: 88761 [2020-10-14 21:10:19,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:10:19,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88761 states. [2020-10-14 21:10:23,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88761 to 86893. [2020-10-14 21:10:23,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86893 states. [2020-10-14 21:10:23,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86893 states to 86893 states and 113027 transitions. [2020-10-14 21:10:23,960 INFO L78 Accepts]: Start accepts. Automaton has 86893 states and 113027 transitions. Word has length 272 [2020-10-14 21:10:23,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:23,961 INFO L479 AbstractCegarLoop]: Abstraction has 86893 states and 113027 transitions. [2020-10-14 21:10:23,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:10:23,961 INFO L276 IsEmpty]: Start isEmpty. Operand 86893 states and 113027 transitions. [2020-10-14 21:10:23,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-10-14 21:10:23,967 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:23,967 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:10:23,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:10:23,968 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:23,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:23,968 INFO L82 PathProgramCache]: Analyzing trace with hash 262929946, now seen corresponding path program 1 times [2020-10-14 21:10:23,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:23,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025067070] [2020-10-14 21:10:23,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:24,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:24,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:24,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:26,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:26,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-14 21:10:26,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:10:26,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2826 [2020-10-14 21:10:26,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:26,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 21:10:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:10:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 305 [2020-10-14 21:10:26,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:10:26,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:26,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:26,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:26,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:26,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:26,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:10:26,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:26,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:26,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:26,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:26,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:10:26,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:27,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:27,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:27,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:27,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:27,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:27,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:10:27,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:10:27,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-14 21:10:27,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:27,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:27,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:27,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:27,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:10:27,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:27,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:10:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:27,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:27,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:27,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 21:10:27,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:10:27,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 21:10:27,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:27,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 21:10:27,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:10:27,901 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-14 21:10:27,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025067070] [2020-10-14 21:10:27,902 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:27,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:10:27,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254249712] [2020-10-14 21:10:27,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:10:27,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:27,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:10:27,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:10:27,904 INFO L87 Difference]: Start difference. First operand 86893 states and 113027 transitions. Second operand 5 states. [2020-10-14 21:10:50,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:10:50,672 INFO L93 Difference]: Finished difference Result 207671 states and 275575 transitions. [2020-10-14 21:10:50,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:10:50,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 299 [2020-10-14 21:10:50,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:10:51,167 INFO L225 Difference]: With dead ends: 207671 [2020-10-14 21:10:51,167 INFO L226 Difference]: Without dead ends: 120774 [2020-10-14 21:10:51,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:10:51,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120774 states. [2020-10-14 21:10:52,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120774 to 116937. [2020-10-14 21:10:52,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116937 states. [2020-10-14 21:10:53,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116937 states to 116937 states and 150200 transitions. [2020-10-14 21:10:53,124 INFO L78 Accepts]: Start accepts. Automaton has 116937 states and 150200 transitions. Word has length 299 [2020-10-14 21:10:53,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:10:53,125 INFO L479 AbstractCegarLoop]: Abstraction has 116937 states and 150200 transitions. [2020-10-14 21:10:53,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:10:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 116937 states and 150200 transitions. [2020-10-14 21:10:53,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-14 21:10:53,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:10:53,133 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:10:53,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:10:53,134 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:10:53,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:10:53,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1044864354, now seen corresponding path program 1 times [2020-10-14 21:10:53,135 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:10:53,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [477205469] [2020-10-14 21:10:53,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:10:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:53,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:54,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:54,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-14 21:10:54,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:54,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1040 [2020-10-14 21:10:54,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:54,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:54,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:10:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-14 21:10:54,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 21:10:54,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:10:54,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:10:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:54,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:54,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:54,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:10:54,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:54,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:10:54,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:54,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:54,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:54,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:54,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:10:54,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:10:54,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:54,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:54,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:54,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:10:54,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:54,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 21:10:54,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:54,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:10:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:54,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:10:54,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:10:54,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:10:54,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:10:54,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:10:54,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:10:54,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:10:54,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:10:54,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 21:10:54,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:10:54,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:10:54,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:10:54,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:10:54,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-14 21:10:54,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:10:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-14 21:10:54,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [477205469] [2020-10-14 21:10:54,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:10:54,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:10:54,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145103712] [2020-10-14 21:10:54,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:10:54,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:10:54,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:10:54,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:10:54,712 INFO L87 Difference]: Start difference. First operand 116937 states and 150200 transitions. Second operand 5 states.