/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/Problem06_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:33:34,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:33:34,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:33:34,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:33:34,037 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:33:34,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:33:34,040 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:33:34,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:33:34,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:33:34,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:33:34,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:33:34,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:33:34,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:33:34,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:33:34,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:33:34,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:33:34,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:33:34,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:33:34,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:33:34,055 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:33:34,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:33:34,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:33:34,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:33:34,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:33:34,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:33:34,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:33:34,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:33:34,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:33:34,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:33:34,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:33:34,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:33:34,064 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:33:34,065 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:33:34,066 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:33:34,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:33:34,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:33:34,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:33:34,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:33:34,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:33:34,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:33:34,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:33:34,070 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 01:33:34,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:33:34,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:33:34,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:33:34,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:33:34,094 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:33:34,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:33:34,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:33:34,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:33:34,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:33:34,095 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:33:34,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:33:34,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:33:34,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:33:34,096 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:33:34,096 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:33:34,097 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:33:34,097 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:33:34,097 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:33:34,097 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:33:34,097 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:33:34,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:33:34,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:33:34,098 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:33:34,098 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:33:34,098 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:33:34,098 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:33:34,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:33:34,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:33:34,099 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:33:34,099 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 01:33:34,428 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:33:34,440 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:33:34,443 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:33:34,445 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:33:34,445 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:33:34,446 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label20.c [2020-10-14 01:33:34,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e24f74ef0/5249f5ed43f14a1687c3ee4a6c5f9567/FLAG15769d3c6 [2020-10-14 01:33:35,347 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:33:35,348 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label20.c [2020-10-14 01:33:35,396 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e24f74ef0/5249f5ed43f14a1687c3ee4a6c5f9567/FLAG15769d3c6 [2020-10-14 01:33:35,856 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e24f74ef0/5249f5ed43f14a1687c3ee4a6c5f9567 [2020-10-14 01:33:35,866 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:33:35,868 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:33:35,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:33:35,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:33:35,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:33:35,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:33:35" (1/1) ... [2020-10-14 01:33:35,877 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d2b9410 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:33:35, skipping insertion in model container [2020-10-14 01:33:35,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:33:35" (1/1) ... [2020-10-14 01:33:35,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:33:36,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:33:38,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:33:38,558 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:33:39,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:33:39,725 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:33:39,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:33:39 WrapperNode [2020-10-14 01:33:39,726 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:33:39,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:33:39,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:33:39,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:33:39,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:33:39" (1/1) ... [2020-10-14 01:33:39,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:33:39" (1/1) ... [2020-10-14 01:33:39,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:33:39" (1/1) ... [2020-10-14 01:33:39,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:33:39" (1/1) ... [2020-10-14 01:33:40,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:33:39" (1/1) ... [2020-10-14 01:33:40,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:33:39" (1/1) ... [2020-10-14 01:33:40,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:33:39" (1/1) ... [2020-10-14 01:33:40,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:33:40,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:33:40,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:33:40,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:33:40,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:33:39" (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 01:33:40,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:33:40,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:33:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:33:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:33:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:33:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:33:40,256 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:33:40,257 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:33:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:33:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:33:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:33:40,257 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:33:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:33:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:33:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:33:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:33:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:33:40,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:33:40,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:33:47,574 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:33:47,575 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:33:47,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:33:47 BoogieIcfgContainer [2020-10-14 01:33:47,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:33:47,595 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:33:47,596 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:33:47,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:33:47,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:33:35" (1/3) ... [2020-10-14 01:33:47,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326e3ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:33:47, skipping insertion in model container [2020-10-14 01:33:47,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:33:39" (2/3) ... [2020-10-14 01:33:47,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326e3ab9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:33:47, skipping insertion in model container [2020-10-14 01:33:47,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:33:47" (3/3) ... [2020-10-14 01:33:47,605 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label20.c [2020-10-14 01:33:47,615 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:33:47,627 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:33:47,641 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:33:47,673 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:33:47,673 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:33:47,673 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:33:47,673 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:33:47,674 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:33:47,674 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:33:47,674 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:33:47,674 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:33:47,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 01:33:47,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 959 [2020-10-14 01:33:47,773 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:33:47,775 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:33:47,776 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:33:47,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:33:47,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1849011375, now seen corresponding path program 1 times [2020-10-14 01:33:47,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:33:47,793 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405291266] [2020-10-14 01:33:47,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:33:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:33:49,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:33:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:33:54,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:33:54,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 974 [2020-10-14 01:33:54,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:33:54,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5174 [2020-10-14 01:33:54,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:33:54,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:33:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:33:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:33:54,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 968 [2020-10-14 01:33:54,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:33:55,297 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:33:55,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:33:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:33:55,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:33:55,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:33:55,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:33:55,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:33:55,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:33:55,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:33:55,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:33:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:33:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:33:55,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:33:55,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:33:56,230 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 01:33:56,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405291266] [2020-10-14 01:33:56,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:33:56,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 01:33:56,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982659673] [2020-10-14 01:33:56,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 01:33:56,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:33:56,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 01:33:56,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 01:33:56,255 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 4 states. [2020-10-14 01:33:56,449 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:34:09,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:34:09,519 INFO L93 Difference]: Finished difference Result 3777 states and 7033 transitions. [2020-10-14 01:34:09,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 01:34:09,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 958 [2020-10-14 01:34:09,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:34:09,572 INFO L225 Difference]: With dead ends: 3777 [2020-10-14 01:34:09,573 INFO L226 Difference]: Without dead ends: 2398 [2020-10-14 01:34:09,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:34:09,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2398 states. [2020-10-14 01:34:09,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2398 to 2373. [2020-10-14 01:34:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2373 states. [2020-10-14 01:34:09,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 3874 transitions. [2020-10-14 01:34:09,771 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 3874 transitions. Word has length 958 [2020-10-14 01:34:09,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:34:09,775 INFO L479 AbstractCegarLoop]: Abstraction has 2373 states and 3874 transitions. [2020-10-14 01:34:09,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 01:34:09,775 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 3874 transitions. [2020-10-14 01:34:09,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 972 [2020-10-14 01:34:09,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:34:09,821 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:34:09,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:34:09,822 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:34:09,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:34:09,823 INFO L82 PathProgramCache]: Analyzing trace with hash 2131748960, now seen corresponding path program 1 times [2020-10-14 01:34:09,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:34:09,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189523191] [2020-10-14 01:34:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:34:10,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:10,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:11,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:15,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:34:15,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 989 [2020-10-14 01:34:15,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:34:15,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5101 [2020-10-14 01:34:15,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:34:15,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:34:15,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:34:15,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:34:15,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 01:34:15,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 01:34:15,920 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:34:15,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:34:15,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:15,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:15,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:34:15,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:34:15,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:34:15,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 01:34:15,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:34:15,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:34:15,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:34:15,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:34:15,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:34:15,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 01:34:16,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:34:16,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:16,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:16,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:34:16,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 01:34:16,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:34:16,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 01:34:16,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:34:16,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:34:16,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:34:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:34:16,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:34:16,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:34:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:34:16,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189523191] [2020-10-14 01:34:16,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:34:16,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:34:16,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454298262] [2020-10-14 01:34:16,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:34:16,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:34:16,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:34:16,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:34:16,788 INFO L87 Difference]: Start difference. First operand 2373 states and 3874 transitions. Second operand 7 states. [2020-10-14 01:34:16,959 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 01:34:17,896 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 135 [2020-10-14 01:34:32,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:34:32,957 INFO L93 Difference]: Finished difference Result 7061 states and 11603 transitions. [2020-10-14 01:34:32,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:34:32,958 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 971 [2020-10-14 01:34:32,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:34:32,986 INFO L225 Difference]: With dead ends: 7061 [2020-10-14 01:34:32,986 INFO L226 Difference]: Without dead ends: 4694 [2020-10-14 01:34:32,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:34:33,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2020-10-14 01:34:33,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4577. [2020-10-14 01:34:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4577 states. [2020-10-14 01:34:33,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4577 states to 4577 states and 6992 transitions. [2020-10-14 01:34:33,184 INFO L78 Accepts]: Start accepts. Automaton has 4577 states and 6992 transitions. Word has length 971 [2020-10-14 01:34:33,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:34:33,185 INFO L479 AbstractCegarLoop]: Abstraction has 4577 states and 6992 transitions. [2020-10-14 01:34:33,185 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:34:33,185 INFO L276 IsEmpty]: Start isEmpty. Operand 4577 states and 6992 transitions. [2020-10-14 01:34:33,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2020-10-14 01:34:33,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:34:33,207 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:34:33,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:34:33,208 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:34:33,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:34:33,208 INFO L82 PathProgramCache]: Analyzing trace with hash -881488353, now seen corresponding path program 1 times [2020-10-14 01:34:33,209 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:34:33,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327178154] [2020-10-14 01:34:33,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:34:33,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:33,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:35,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:38,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:34:38,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 994 [2020-10-14 01:34:38,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:34:38,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-14 01:34:38,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:34:38,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:34:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:34:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:34:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 01:34:38,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:34:38,708 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:34:38,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:34:38,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:38,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:38,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:34:38,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:34:38,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:34:38,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-14 01:34:38,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:34:38,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:34:38,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:34:38,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:34:38,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:34:38,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:34:38,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:34:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:38,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:38,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:34:38,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-14 01:34:38,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:34:38,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-14 01:34:38,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:34:38,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:34:38,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:34:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:34:38,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 01:34:38,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:34:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:34:39,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327178154] [2020-10-14 01:34:39,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:34:39,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:34:39,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663363758] [2020-10-14 01:34:39,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:34:39,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:34:39,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:34:39,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:34:39,380 INFO L87 Difference]: Start difference. First operand 4577 states and 6992 transitions. Second operand 7 states. [2020-10-14 01:34:39,528 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:34:40,090 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:34:55,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:34:55,216 INFO L93 Difference]: Finished difference Result 13717 states and 21412 transitions. [2020-10-14 01:34:55,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:34:55,217 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 976 [2020-10-14 01:34:55,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:34:55,265 INFO L225 Difference]: With dead ends: 13717 [2020-10-14 01:34:55,265 INFO L226 Difference]: Without dead ends: 9146 [2020-10-14 01:34:55,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:34:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9146 states. [2020-10-14 01:34:55,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9146 to 8945. [2020-10-14 01:34:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8945 states. [2020-10-14 01:34:55,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8945 states to 8945 states and 13522 transitions. [2020-10-14 01:34:55,554 INFO L78 Accepts]: Start accepts. Automaton has 8945 states and 13522 transitions. Word has length 976 [2020-10-14 01:34:55,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:34:55,555 INFO L479 AbstractCegarLoop]: Abstraction has 8945 states and 13522 transitions. [2020-10-14 01:34:55,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:34:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 8945 states and 13522 transitions. [2020-10-14 01:34:55,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2020-10-14 01:34:55,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:34:55,624 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:34:55,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:34:55,625 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:34:55,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:34:55,626 INFO L82 PathProgramCache]: Analyzing trace with hash 814179528, now seen corresponding path program 1 times [2020-10-14 01:34:55,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:34:55,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68048756] [2020-10-14 01:34:55,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:34:55,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:34:55,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:56,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:34:56,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:00,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:00,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1013 [2020-10-14 01:35:00,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:35:00,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-14 01:35:00,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:00,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:35:00,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 01:35:00,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:35:00,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:35:01,620 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:35:01,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:35:01,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:01,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:01,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:01,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:35:01,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:01,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 01:35:01,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:01,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:01,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:35:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:35:01,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:35:01,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:01,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:35:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:01,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:01,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:01,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:35:01,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:01,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 01:35:01,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:01,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:35:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:35:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 01:35:01,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:01,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 01:35:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:01,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:01,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:01,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 01:35:01,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:01,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 01:35:01,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:01,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:35:01,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:35:01,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:35:01,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:01,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-14 01:35:01,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:01,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:01,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:01,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:35:01,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:01,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:35:01,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:01,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:35:01,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-14 01:35:01,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:35:01,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 37 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-14 01:35:02,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68048756] [2020-10-14 01:35:02,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:35:02,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:35:02,627 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454961409] [2020-10-14 01:35:02,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:35:02,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:35:02,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:35:02,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:35:02,629 INFO L87 Difference]: Start difference. First operand 8945 states and 13522 transitions. Second operand 7 states. [2020-10-14 01:35:02,852 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 01:35:03,893 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:35:20,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:35:20,998 INFO L93 Difference]: Finished difference Result 23239 states and 36284 transitions. [2020-10-14 01:35:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 01:35:20,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 991 [2020-10-14 01:35:20,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:35:21,088 INFO L225 Difference]: With dead ends: 23239 [2020-10-14 01:35:21,089 INFO L226 Difference]: Without dead ends: 14300 [2020-10-14 01:35:21,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:35:21,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14300 states. [2020-10-14 01:35:21,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14300 to 13833. [2020-10-14 01:35:21,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13833 states. [2020-10-14 01:35:21,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13833 states to 13833 states and 19868 transitions. [2020-10-14 01:35:21,536 INFO L78 Accepts]: Start accepts. Automaton has 13833 states and 19868 transitions. Word has length 991 [2020-10-14 01:35:21,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:35:21,536 INFO L479 AbstractCegarLoop]: Abstraction has 13833 states and 19868 transitions. [2020-10-14 01:35:21,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:35:21,536 INFO L276 IsEmpty]: Start isEmpty. Operand 13833 states and 19868 transitions. [2020-10-14 01:35:21,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1003 [2020-10-14 01:35:21,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:35:21,589 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:35:21,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:35:21,589 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:35:21,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:35:21,594 INFO L82 PathProgramCache]: Analyzing trace with hash -1628904316, now seen corresponding path program 1 times [2020-10-14 01:35:21,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:35:21,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1081727895] [2020-10-14 01:35:21,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:35:21,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:21,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:23,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:26,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:26,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1020 [2020-10-14 01:35:26,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:35:26,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-14 01:35:26,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:26,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:35:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:35:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-14 01:35:26,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:35:27,039 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:35:27,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:35:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:27,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:27,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:35:27,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:27,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 01:35:27,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:27,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:35:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:35:27,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:35:27,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:27,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:35:27,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:27,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:27,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:27,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 01:35:27,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 01:35:27,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:27,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:35:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:35:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 01:35:27,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:27,803 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:35:27,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1081727895] [2020-10-14 01:35:27,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:35:27,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:35:27,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295223736] [2020-10-14 01:35:27,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:35:27,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:35:27,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:35:27,806 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:35:27,806 INFO L87 Difference]: Start difference. First operand 13833 states and 19868 transitions. Second operand 8 states. [2020-10-14 01:35:27,948 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:35:29,684 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:35:45,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:35:45,905 INFO L93 Difference]: Finished difference Result 35211 states and 52584 transitions. [2020-10-14 01:35:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:35:45,906 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1002 [2020-10-14 01:35:45,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:35:45,990 INFO L225 Difference]: With dead ends: 35211 [2020-10-14 01:35:45,991 INFO L226 Difference]: Without dead ends: 21384 [2020-10-14 01:35:46,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:35:46,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21384 states. [2020-10-14 01:35:46,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21384 to 20894. [2020-10-14 01:35:46,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20894 states. [2020-10-14 01:35:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20894 states to 20894 states and 28860 transitions. [2020-10-14 01:35:46,589 INFO L78 Accepts]: Start accepts. Automaton has 20894 states and 28860 transitions. Word has length 1002 [2020-10-14 01:35:46,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:35:46,590 INFO L479 AbstractCegarLoop]: Abstraction has 20894 states and 28860 transitions. [2020-10-14 01:35:46,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:35:46,590 INFO L276 IsEmpty]: Start isEmpty. Operand 20894 states and 28860 transitions. [2020-10-14 01:35:46,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1013 [2020-10-14 01:35:46,668 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:35:46,669 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:35:46,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:35:46,670 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:35:46,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:35:46,670 INFO L82 PathProgramCache]: Analyzing trace with hash -219831120, now seen corresponding path program 1 times [2020-10-14 01:35:46,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:35:46,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550697810] [2020-10-14 01:35:46,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:35:46,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:46,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:47,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:51,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:51,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:51,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1030 [2020-10-14 01:35:51,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:35:51,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-14 01:35:51,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:51,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:51,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:35:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:35:51,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-14 01:35:51,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:35:52,220 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:35:52,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:35:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:52,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:52,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:52,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:35:52,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:52,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-14 01:35:52,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:52,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:52,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:35:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:35:52,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:35:52,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:35:52,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:35:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:35:52,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:35:52,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:35:52,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 01:35:52,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:35:52,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 01:35:52,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:35:52,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:35:52,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:35:52,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:35:52,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 01:35:52,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:35:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:35:52,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550697810] [2020-10-14 01:35:52,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:35:52,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:35:52,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843004649] [2020-10-14 01:35:52,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:35:52,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:35:52,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:35:52,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:35:52,971 INFO L87 Difference]: Start difference. First operand 20894 states and 28860 transitions. Second operand 7 states. [2020-10-14 01:35:53,116 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:36:12,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:36:12,468 INFO L93 Difference]: Finished difference Result 64049 states and 90857 transitions. [2020-10-14 01:36:12,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 01:36:12,469 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1012 [2020-10-14 01:36:12,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:36:12,626 INFO L225 Difference]: With dead ends: 64049 [2020-10-14 01:36:12,626 INFO L226 Difference]: Without dead ends: 43161 [2020-10-14 01:36:12,680 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-14 01:36:12,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43161 states. [2020-10-14 01:36:13,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43161 to 42675. [2020-10-14 01:36:13,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42675 states. [2020-10-14 01:36:13,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42675 states to 42675 states and 60020 transitions. [2020-10-14 01:36:13,701 INFO L78 Accepts]: Start accepts. Automaton has 42675 states and 60020 transitions. Word has length 1012 [2020-10-14 01:36:13,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:36:13,701 INFO L479 AbstractCegarLoop]: Abstraction has 42675 states and 60020 transitions. [2020-10-14 01:36:13,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:36:13,702 INFO L276 IsEmpty]: Start isEmpty. Operand 42675 states and 60020 transitions. [2020-10-14 01:36:13,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1015 [2020-10-14 01:36:13,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:36:13,814 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:13,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:36:13,814 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:36:13,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:36:13,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1441894809, now seen corresponding path program 1 times [2020-10-14 01:36:13,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:36:13,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894879190] [2020-10-14 01:36:13,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:36:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:14,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:14,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:19,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:19,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1034 [2020-10-14 01:36:19,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:36:19,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-14 01:36:19,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:19,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:36:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 01:36:19,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-14 01:36:19,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:36:19,350 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:36:19,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:36:19,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:19,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:19,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:19,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:36:19,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 01:36:19,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:19,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:36:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:36:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:36:19,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:36:19,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:36:19,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:19,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:19,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:19,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:36:19,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:19,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-14 01:36:19,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:19,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:36:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:36:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 01:36:19,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:36:19,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 01:36:19,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:19,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:19,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:19,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 01:36:19,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:19,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 01:36:19,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:19,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:36:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:36:19,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-14 01:36:19,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:36:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:36:20,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894879190] [2020-10-14 01:36:20,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:36:20,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:36:20,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511949282] [2020-10-14 01:36:20,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:36:20,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:36:20,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:36:20,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:36:20,109 INFO L87 Difference]: Start difference. First operand 42675 states and 60020 transitions. Second operand 7 states. [2020-10-14 01:36:20,265 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:36:21,405 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:36:39,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:36:39,259 INFO L93 Difference]: Finished difference Result 129347 states and 196390 transitions. [2020-10-14 01:36:39,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:36:39,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1014 [2020-10-14 01:36:39,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:36:39,627 INFO L225 Difference]: With dead ends: 129347 [2020-10-14 01:36:39,627 INFO L226 Difference]: Without dead ends: 86678 [2020-10-14 01:36:39,747 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:36:39,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86678 states. [2020-10-14 01:36:42,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86678 to 84623. [2020-10-14 01:36:42,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84623 states. [2020-10-14 01:36:42,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84623 states to 84623 states and 118822 transitions. [2020-10-14 01:36:42,243 INFO L78 Accepts]: Start accepts. Automaton has 84623 states and 118822 transitions. Word has length 1014 [2020-10-14 01:36:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:36:42,244 INFO L479 AbstractCegarLoop]: Abstraction has 84623 states and 118822 transitions. [2020-10-14 01:36:42,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:36:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand 84623 states and 118822 transitions. [2020-10-14 01:36:42,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1052 [2020-10-14 01:36:42,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:36:42,462 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:36:42,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 01:36:42,463 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:36:42,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:36:42,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1534425447, now seen corresponding path program 1 times [2020-10-14 01:36:42,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:36:42,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374259759] [2020-10-14 01:36:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:36:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:42,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:42,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:43,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:47,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:47,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1073 [2020-10-14 01:36:47,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:36:47,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-14 01:36:47,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:47,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:47,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:36:47,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-14 01:36:47,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 01:36:47,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:36:47,903 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:36:47,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:36:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:47,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:47,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:47,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:36:47,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:47,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:36:47,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:47,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:47,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:36:47,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:36:47,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:36:47,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:36:47,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:36:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:48,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:48,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:48,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 01:36:48,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:48,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:36:48,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:48,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:48,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:36:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:36:48,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:36:48,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:36:48,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-14 01:36:48,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:48,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:48,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:48,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-14 01:36:48,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:36:48,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:48,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:36:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:36:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-14 01:36:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:36:48,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-14 01:36:48,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:36:48,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:36:48,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:36:48,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 01:36:48,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:36:48,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-14 01:36:48,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:36:48,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:36:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:36:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:36:48,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 01:36:48,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:36:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-14 01:36:48,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374259759] [2020-10-14 01:36:48,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:36:48,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:36:48,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49028299] [2020-10-14 01:36:48,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:36:48,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:36:48,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:36:48,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:36:48,892 INFO L87 Difference]: Start difference. First operand 84623 states and 118822 transitions. Second operand 7 states. [2020-10-14 01:36:49,029 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:36:51,704 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:37:08,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:37:08,093 INFO L93 Difference]: Finished difference Result 227405 states and 389619 transitions. [2020-10-14 01:37:08,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:37:08,094 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1051 [2020-10-14 01:37:08,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:37:08,735 INFO L225 Difference]: With dead ends: 227405 [2020-10-14 01:37:08,735 INFO L226 Difference]: Without dead ends: 142788 [2020-10-14 01:37:08,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:37:09,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142788 states.