/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:29:21,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:29:21,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:29:21,310 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:29:21,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:29:21,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:29:21,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:29:21,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:29:21,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:29:21,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:29:21,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:29:21,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:29:21,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:29:21,320 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:29:21,321 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:29:21,322 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:29:21,323 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:29:21,324 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:29:21,325 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:29:21,327 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:29:21,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:29:21,329 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:29:21,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:29:21,331 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:29:21,334 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:29:21,334 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:29:21,334 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:29:21,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:29:21,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:29:21,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:29:21,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:29:21,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:29:21,338 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:29:21,338 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:29:21,339 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:29:21,340 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:29:21,340 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:29:21,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:29:21,341 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:29:21,342 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:29:21,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:29:21,343 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 04:29:21,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:29:21,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:29:21,369 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:29:21,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:29:21,370 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:29:21,370 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:29:21,370 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:29:21,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:29:21,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:29:21,371 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:29:21,371 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:29:21,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:29:21,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:29:21,373 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:29:21,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:29:21,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:29:21,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:29:21,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:29:21,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:29:21,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:29:21,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:29:21,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:29:21,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:29:21,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:29:21,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:29:21,376 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:29:21,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:29:21,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:29:21,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:29:21,377 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:29:21,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:29:21,698 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:29:21,706 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:29:21,709 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:29:21,710 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:29:21,710 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label17.c [2020-10-14 04:29:21,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52a859d23/d4f2a0f44a3e473cbe0b77e754b87ebd/FLAGa455b54dc [2020-10-14 04:29:22,688 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:29:22,689 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem19_label17.c [2020-10-14 04:29:22,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52a859d23/d4f2a0f44a3e473cbe0b77e754b87ebd/FLAGa455b54dc [2020-10-14 04:29:23,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52a859d23/d4f2a0f44a3e473cbe0b77e754b87ebd [2020-10-14 04:29:23,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:29:23,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:29:23,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:29:23,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:29:23,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:29:23,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:29:23" (1/1) ... [2020-10-14 04:29:23,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:23, skipping insertion in model container [2020-10-14 04:29:23,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:29:23" (1/1) ... [2020-10-14 04:29:23,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:29:23,389 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:29:26,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:29:26,072 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:29:27,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:29:27,201 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:29:27,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:27 WrapperNode [2020-10-14 04:29:27,202 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:29:27,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:29:27,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:29:27,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:29:27,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:27" (1/1) ... [2020-10-14 04:29:27,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:27" (1/1) ... [2020-10-14 04:29:27,345 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:27" (1/1) ... [2020-10-14 04:29:27,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:27" (1/1) ... [2020-10-14 04:29:27,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:27" (1/1) ... [2020-10-14 04:29:27,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:27" (1/1) ... [2020-10-14 04:29:27,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:27" (1/1) ... [2020-10-14 04:29:27,980 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:29:27,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:29:27,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:29:27,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:29:27,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:27" (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 04:29:28,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:29:28,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:29:28,058 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:29:28,058 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:29:28,058 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 04:29:28,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 04:29:28,059 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 04:29:28,060 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-14 04:29:28,060 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:29:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:29:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:29:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 04:29:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 04:29:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 04:29:28,060 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-14 04:29:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:29:28,061 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:29:28,064 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:29:28,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:29:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:29:28,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:29:39,851 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:29:39,852 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:29:39,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:29:39 BoogieIcfgContainer [2020-10-14 04:29:39,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:29:39,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:29:39,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:29:39,872 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:29:39,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:29:23" (1/3) ... [2020-10-14 04:29:39,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0e37b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:29:39, skipping insertion in model container [2020-10-14 04:29:39,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:29:27" (2/3) ... [2020-10-14 04:29:39,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f0e37b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:29:39, skipping insertion in model container [2020-10-14 04:29:39,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:29:39" (3/3) ... [2020-10-14 04:29:39,876 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label17.c [2020-10-14 04:29:39,887 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:29:39,896 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:29:39,909 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:29:39,940 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:29:39,941 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:29:39,941 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:29:39,941 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:29:39,941 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:29:39,941 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:29:39,942 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:29:39,942 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:29:39,997 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2020-10-14 04:29:40,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-14 04:29:40,002 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:29:40,003 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:29:40,003 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:29:40,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:29:40,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1022961430, now seen corresponding path program 1 times [2020-10-14 04:29:40,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:29:40,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037986877] [2020-10-14 04:29:40,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:29:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:29:40,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:40,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:29:40,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-14 04:29:40,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:29:40,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-10-14 04:29:40,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:29:40,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:29:40,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:29:40,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:29:40,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 04:29:40,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:29:40,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:29:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:29:40,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:29:40,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:29:40,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:29:40,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:29:40,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 04:29:40,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:29:40,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:29:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:29:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:29:40,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:29:40,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:29:40,733 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 04:29:40,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037986877] [2020-10-14 04:29:40,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:29:40,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:29:40,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797124018] [2020-10-14 04:29:40,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:29:40,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:29:40,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:29:40,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:29:40,762 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 4 states. [2020-10-14 04:30:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:30:05,214 INFO L93 Difference]: Finished difference Result 5095 states and 9566 transitions. [2020-10-14 04:30:05,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:30:05,217 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-14 04:30:05,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:30:05,254 INFO L225 Difference]: With dead ends: 5095 [2020-10-14 04:30:05,254 INFO L226 Difference]: Without dead ends: 3254 [2020-10-14 04:30:05,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 04:30:05,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3254 states. [2020-10-14 04:30:05,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3254 to 3208. [2020-10-14 04:30:05,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3208 states. [2020-10-14 04:30:05,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 5177 transitions. [2020-10-14 04:30:05,481 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 5177 transitions. Word has length 16 [2020-10-14 04:30:05,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:30:05,481 INFO L479 AbstractCegarLoop]: Abstraction has 3208 states and 5177 transitions. [2020-10-14 04:30:05,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:30:05,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 5177 transitions. [2020-10-14 04:30:05,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 04:30:05,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:30:05,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:30:05,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:30:05,487 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:30:05,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:30:05,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1800264865, now seen corresponding path program 1 times [2020-10-14 04:30:05,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:30:05,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938491137] [2020-10-14 04:30:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:30:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:05,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:05,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:06,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:06,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:06,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 04:30:06,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:30:06,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1194 [2020-10-14 04:30:06,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:06,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:06,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:30:06,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 04:30:06,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:30:06,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:30:06,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:30:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:06,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:06,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:06,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:30:06,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:30:06,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:30:06,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:06,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:06,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:30:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:30:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:30:06,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:06,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:30:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:06,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:06,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:06,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:30:06,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:30:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-14 04:30:06,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:06,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:30:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:30:06,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:30:06,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:06,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:30:06,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938491137] [2020-10-14 04:30:06,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:30:06,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 04:30:06,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610377195] [2020-10-14 04:30:06,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 04:30:06,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:30:06,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 04:30:06,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:30:06,998 INFO L87 Difference]: Start difference. First operand 3208 states and 5177 transitions. Second operand 6 states. [2020-10-14 04:30:46,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:30:46,634 INFO L93 Difference]: Finished difference Result 9373 states and 16113 transitions. [2020-10-14 04:30:46,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 04:30:46,636 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 91 [2020-10-14 04:30:46,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:30:46,670 INFO L225 Difference]: With dead ends: 9373 [2020-10-14 04:30:46,670 INFO L226 Difference]: Without dead ends: 6171 [2020-10-14 04:30:46,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 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 04:30:46,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6171 states. [2020-10-14 04:30:46,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6171 to 6081. [2020-10-14 04:30:46,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6081 states. [2020-10-14 04:30:46,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6081 states to 6081 states and 9834 transitions. [2020-10-14 04:30:46,859 INFO L78 Accepts]: Start accepts. Automaton has 6081 states and 9834 transitions. Word has length 91 [2020-10-14 04:30:46,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:30:46,860 INFO L479 AbstractCegarLoop]: Abstraction has 6081 states and 9834 transitions. [2020-10-14 04:30:46,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 04:30:46,860 INFO L276 IsEmpty]: Start isEmpty. Operand 6081 states and 9834 transitions. [2020-10-14 04:30:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-14 04:30:46,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:30:46,870 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:30:46,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:30:46,871 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:30:46,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:30:46,871 INFO L82 PathProgramCache]: Analyzing trace with hash -2106865564, now seen corresponding path program 1 times [2020-10-14 04:30:46,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:30:46,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [422438218] [2020-10-14 04:30:46,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:30:46,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:46,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:47,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:47,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:47,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:47,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:47,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:47,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-14 04:30:47,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:30:47,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-10-14 04:30:47,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:47,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:30:47,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 04:30:47,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 04:30:47,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:47,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:30:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:47,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:47,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:47,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:30:47,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:30:47,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:30:47,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:47,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:30:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:30:47,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:30:47,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:47,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:30:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:30:48,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:30:48,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:30:48,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:30:48,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:30:48,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-14 04:30:48,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:30:48,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:30:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:30:48,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:30:48,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 04:30:48,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:30:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:30:48,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [422438218] [2020-10-14 04:30:48,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:30:48,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:30:48,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788900531] [2020-10-14 04:30:48,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:30:48,143 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:30:48,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:30:48,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:30:48,143 INFO L87 Difference]: Start difference. First operand 6081 states and 9834 transitions. Second operand 5 states. [2020-10-14 04:31:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:31:21,895 INFO L93 Difference]: Finished difference Result 17807 states and 29281 transitions. [2020-10-14 04:31:21,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:31:21,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-14 04:31:21,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:31:21,956 INFO L225 Difference]: With dead ends: 17807 [2020-10-14 04:31:21,957 INFO L226 Difference]: Without dead ends: 11732 [2020-10-14 04:31:21,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 04:31:21,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11732 states. [2020-10-14 04:31:22,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11732 to 11714. [2020-10-14 04:31:22,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11714 states. [2020-10-14 04:31:22,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11714 states to 11714 states and 16800 transitions. [2020-10-14 04:31:22,247 INFO L78 Accepts]: Start accepts. Automaton has 11714 states and 16800 transitions. Word has length 103 [2020-10-14 04:31:22,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:31:22,248 INFO L479 AbstractCegarLoop]: Abstraction has 11714 states and 16800 transitions. [2020-10-14 04:31:22,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:31:22,249 INFO L276 IsEmpty]: Start isEmpty. Operand 11714 states and 16800 transitions. [2020-10-14 04:31:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-14 04:31:22,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:31:22,259 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:31:22,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:31:22,260 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:31:22,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:31:22,260 INFO L82 PathProgramCache]: Analyzing trace with hash -836458529, now seen corresponding path program 1 times [2020-10-14 04:31:22,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:31:22,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601683677] [2020-10-14 04:31:22,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:31:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:31:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:22,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:23,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:23,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:31:23,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-14 04:31:23,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:31:23,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 849 [2020-10-14 04:31:23,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:31:23,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:31:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:31:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-14 04:31:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 04:31:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:31:23,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:31:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:31:23,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:23,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:31:23,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:31:23,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:31:23,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:31:23,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:31:23,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:31:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:31:23,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:31:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:31:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:31:23,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:31:23,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:31:23,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:31:23,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:31:23,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-14 04:31:23,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:31:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 04:31:23,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:31:23,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:31:23,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:31:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:31:23,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:31:23,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:31:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:31:23,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601683677] [2020-10-14 04:31:23,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:31:23,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:31:23,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864560205] [2020-10-14 04:31:23,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:31:23,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:31:23,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:31:23,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:31:23,487 INFO L87 Difference]: Start difference. First operand 11714 states and 16800 transitions. Second operand 5 states. [2020-10-14 04:32:06,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:32:06,325 INFO L93 Difference]: Finished difference Result 34643 states and 50571 transitions. [2020-10-14 04:32:06,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:32:06,328 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-14 04:32:06,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:32:06,414 INFO L225 Difference]: With dead ends: 34643 [2020-10-14 04:32:06,414 INFO L226 Difference]: Without dead ends: 22935 [2020-10-14 04:32:06,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 04:32:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22935 states. [2020-10-14 04:32:06,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22935 to 22930. [2020-10-14 04:32:06,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22930 states. [2020-10-14 04:32:07,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22930 states to 22930 states and 29620 transitions. [2020-10-14 04:32:07,018 INFO L78 Accepts]: Start accepts. Automaton has 22930 states and 29620 transitions. Word has length 133 [2020-10-14 04:32:07,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:32:07,020 INFO L479 AbstractCegarLoop]: Abstraction has 22930 states and 29620 transitions. [2020-10-14 04:32:07,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:32:07,020 INFO L276 IsEmpty]: Start isEmpty. Operand 22930 states and 29620 transitions. [2020-10-14 04:32:07,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-14 04:32:07,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:32:07,024 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:32:07,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:32:07,025 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:32:07,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:32:07,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1140809130, now seen corresponding path program 1 times [2020-10-14 04:32:07,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:32:07,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145623070] [2020-10-14 04:32:07,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:32:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:07,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:07,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:08,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:08,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:09,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:11,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:11,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-14 04:32:11,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:32:11,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4828 [2020-10-14 04:32:11,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:11,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:11,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:32:11,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 04:32:11,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-14 04:32:11,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:12,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:32:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:12,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:12,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:12,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:32:12,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:12,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:32:12,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:12,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:12,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:32:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:32:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:32:12,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:12,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:32:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:12,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:12,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:12,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:32:12,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:12,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 04:32:12,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:12,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:32:12,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:32:12,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:32:12,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:12,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 04:32:12,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:32:12,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:32:12,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:32:12,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-14 04:32:12,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:32:12,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 04:32:12,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:32:12,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:32:12,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:32:12,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:32:12,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 04:32:12,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:32:12,465 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:32:12,465 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145623070] [2020-10-14 04:32:12,466 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:32:12,466 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:32:12,466 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090934842] [2020-10-14 04:32:12,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:32:12,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:32:12,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:32:12,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:32:12,469 INFO L87 Difference]: Start difference. First operand 22930 states and 29620 transitions. Second operand 7 states. [2020-10-14 04:33:12,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:33:12,733 INFO L93 Difference]: Finished difference Result 55923 states and 76016 transitions. [2020-10-14 04:33:12,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 04:33:12,737 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 189 [2020-10-14 04:33:12,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:33:12,886 INFO L225 Difference]: With dead ends: 55923 [2020-10-14 04:33:12,886 INFO L226 Difference]: Without dead ends: 32999 [2020-10-14 04:33:12,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:33:12,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32999 states. [2020-10-14 04:33:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32999 to 32961. [2020-10-14 04:33:13,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32961 states. [2020-10-14 04:33:13,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32961 states to 32961 states and 44629 transitions. [2020-10-14 04:33:13,632 INFO L78 Accepts]: Start accepts. Automaton has 32961 states and 44629 transitions. Word has length 189 [2020-10-14 04:33:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:33:13,633 INFO L479 AbstractCegarLoop]: Abstraction has 32961 states and 44629 transitions. [2020-10-14 04:33:13,633 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:33:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 32961 states and 44629 transitions. [2020-10-14 04:33:13,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-14 04:33:13,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:33:13,636 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:33:13,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:33:13,637 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:33:13,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:33:13,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1295240618, now seen corresponding path program 1 times [2020-10-14 04:33:13,637 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:33:13,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657285300] [2020-10-14 04:33:13,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:33:13,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:13,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:13,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:14,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:14,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:15,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:16,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:18,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:18,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-14 04:33:18,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 04:33:18,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-14 04:33:18,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:18,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:18,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:33:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-14 04:33:18,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-14 04:33:18,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:33:18,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:33:18,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:18,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:18,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:18,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:33:18,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:33:18,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 04:33:18,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:18,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:33:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:33:18,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:33:18,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 04:33:18,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:33:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:18,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:18,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:18,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-14 04:33:18,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:33:18,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 04:33:18,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:18,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:18,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:33:18,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:33:18,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:33:18,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:33:19,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-14 04:33:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:33:19,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:33:19,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:33:19,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:33:19,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:33:19,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-14 04:33:19,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:33:19,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:33:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:33:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:33:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-14 04:33:19,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:33:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 110 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:33:19,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657285300] [2020-10-14 04:33:19,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:33:19,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:33:19,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45861576] [2020-10-14 04:33:19,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:33:19,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:33:19,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:33:19,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:33:19,567 INFO L87 Difference]: Start difference. First operand 32961 states and 44629 transitions. Second operand 7 states.