/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_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 01:28:44,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 01:28:44,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 01:28:44,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 01:28:44,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 01:28:44,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 01:28:44,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 01:28:44,074 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 01:28:44,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 01:28:44,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 01:28:44,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 01:28:44,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 01:28:44,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 01:28:44,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 01:28:44,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 01:28:44,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 01:28:44,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 01:28:44,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 01:28:44,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 01:28:44,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 01:28:44,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 01:28:44,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 01:28:44,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 01:28:44,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 01:28:44,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 01:28:44,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 01:28:44,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 01:28:44,094 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 01:28:44,095 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 01:28:44,096 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 01:28:44,096 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 01:28:44,097 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 01:28:44,097 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 01:28:44,098 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 01:28:44,099 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 01:28:44,099 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 01:28:44,100 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 01:28:44,100 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 01:28:44,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 01:28:44,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 01:28:44,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 01:28:44,102 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 01:28:44,124 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 01:28:44,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 01:28:44,125 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 01:28:44,125 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 01:28:44,125 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 01:28:44,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 01:28:44,126 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 01:28:44,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 01:28:44,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 01:28:44,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 01:28:44,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 01:28:44,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 01:28:44,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 01:28:44,127 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 01:28:44,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 01:28:44,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 01:28:44,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 01:28:44,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 01:28:44,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 01:28:44,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 01:28:44,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 01:28:44,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 01:28:44,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 01:28:44,129 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 01:28:44,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 01:28:44,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 01:28:44,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 01:28:44,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 01:28:44,130 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 01:28:44,130 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 01:28:44,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 01:28:44,414 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 01:28:44,417 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 01:28:44,420 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 01:28:44,421 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 01:28:44,421 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label02.c [2020-10-14 01:28:44,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49699ccea/a7e88d75451e4738911f02bc97a754d1/FLAG369a69ea2 [2020-10-14 01:28:45,403 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 01:28:45,404 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label02.c [2020-10-14 01:28:45,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49699ccea/a7e88d75451e4738911f02bc97a754d1/FLAG369a69ea2 [2020-10-14 01:28:45,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/49699ccea/a7e88d75451e4738911f02bc97a754d1 [2020-10-14 01:28:45,843 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 01:28:45,845 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 01:28:45,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 01:28:45,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 01:28:45,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 01:28:45,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:28:45" (1/1) ... [2020-10-14 01:28:45,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678b2c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:45, skipping insertion in model container [2020-10-14 01:28:45,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:28:45" (1/1) ... [2020-10-14 01:28:45,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 01:28:46,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 01:28:48,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:28:48,423 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 01:28:49,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 01:28:49,679 INFO L208 MainTranslator]: Completed translation [2020-10-14 01:28:49,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:49 WrapperNode [2020-10-14 01:28:49,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 01:28:49,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 01:28:49,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 01:28:49,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 01:28:49,712 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:49" (1/1) ... [2020-10-14 01:28:49,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:49" (1/1) ... [2020-10-14 01:28:49,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:49" (1/1) ... [2020-10-14 01:28:49,793 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:49" (1/1) ... [2020-10-14 01:28:49,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:49" (1/1) ... [2020-10-14 01:28:50,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:49" (1/1) ... [2020-10-14 01:28:50,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:49" (1/1) ... [2020-10-14 01:28:50,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 01:28:50,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 01:28:50,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 01:28:50,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 01:28:50,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:49" (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 01:28:50,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 01:28:50,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 01:28:50,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 01:28:50,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 01:28:50,186 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 01:28:50,187 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 01:28:50,187 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-14 01:28:50,188 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 01:28:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 01:28:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 01:28:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 01:28:50,188 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 01:28:50,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-14 01:28:50,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 01:28:50,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 01:28:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 01:28:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 01:28:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 01:28:50,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 01:28:56,978 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 01:28:56,979 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 01:28:56,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:28:56 BoogieIcfgContainer [2020-10-14 01:28:56,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 01:28:56,995 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 01:28:56,995 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 01:28:56,998 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 01:28:56,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:28:45" (1/3) ... [2020-10-14 01:28:57,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6876517b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:28:56, skipping insertion in model container [2020-10-14 01:28:57,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:28:49" (2/3) ... [2020-10-14 01:28:57,000 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6876517b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:28:57, skipping insertion in model container [2020-10-14 01:28:57,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:28:56" (3/3) ... [2020-10-14 01:28:57,002 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem06_label02.c [2020-10-14 01:28:57,013 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 01:28:57,022 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 01:28:57,037 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 01:28:57,068 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 01:28:57,068 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 01:28:57,068 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 01:28:57,068 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 01:28:57,068 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 01:28:57,069 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 01:28:57,069 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 01:28:57,069 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 01:28:57,109 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states. [2020-10-14 01:28:57,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 952 [2020-10-14 01:28:57,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:28:57,158 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] [2020-10-14 01:28:57,158 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:28:57,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:28:57,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2019245400, now seen corresponding path program 1 times [2020-10-14 01:28:57,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:28:57,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205454345] [2020-10-14 01:28:57,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:28:58,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:28:58,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:02,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:03,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:03,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 967 [2020-10-14 01:29:03,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:29:03,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5261 [2020-10-14 01:29:03,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:03,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:03,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 01:29:03,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:29:03,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 961 [2020-10-14 01:29:03,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 01:29:04,834 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:29:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:29:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:04,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:04,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:04,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:29:04,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-14 01:29:04,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:04,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:04,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:29:04,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:29:04,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:29:04,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:29:05,852 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 01:29:05,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205454345] [2020-10-14 01:29:05,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:29:05,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 01:29:05,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114145100] [2020-10-14 01:29:05,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 01:29:05,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:29:05,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 01:29:05,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 01:29:05,876 INFO L87 Difference]: Start difference. First operand 1315 states. Second operand 5 states. [2020-10-14 01:29:06,076 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:29:06,339 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:29:25,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:29:25,891 INFO L93 Difference]: Finished difference Result 4880 states and 9208 transitions. [2020-10-14 01:29:25,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 01:29:25,893 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 951 [2020-10-14 01:29:25,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:29:25,959 INFO L225 Difference]: With dead ends: 4880 [2020-10-14 01:29:25,959 INFO L226 Difference]: Without dead ends: 3497 [2020-10-14 01:29:25,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:29:25,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2020-10-14 01:29:26,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 3403. [2020-10-14 01:29:26,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3403 states. [2020-10-14 01:29:26,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 5930 transitions. [2020-10-14 01:29:26,231 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 5930 transitions. Word has length 951 [2020-10-14 01:29:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:29:26,235 INFO L479 AbstractCegarLoop]: Abstraction has 3403 states and 5930 transitions. [2020-10-14 01:29:26,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 01:29:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 5930 transitions. [2020-10-14 01:29:26,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 960 [2020-10-14 01:29:26,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:29:26,277 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 01:29:26,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 01:29:26,277 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:29:26,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:29:26,278 INFO L82 PathProgramCache]: Analyzing trace with hash -179314403, now seen corresponding path program 1 times [2020-10-14 01:29:26,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:29:26,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761237567] [2020-10-14 01:29:26,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:29:26,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:26,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:29,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:31,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:31,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 977 [2020-10-14 01:29:31,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:29:31,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-14 01:29:31,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:31,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:29:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:29:31,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 01:29:31,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:29:31,983 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:29:31,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:29:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:31,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:32,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:32,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:29:32,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:32,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 01:29:32,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:32,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:32,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:29:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:29:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:29:32,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 01:29:32,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:29:32,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:32,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:32,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:29:32,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 01:29:32,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:29:32,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 01:29:32,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:29:32,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:29:32,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:29:32,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:29:32,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 01:29:32,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:29:32,930 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:29:32,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761237567] [2020-10-14 01:29:32,931 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:29:32,931 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:29:32,931 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139468613] [2020-10-14 01:29:32,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:29:32,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:29:32,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:29:32,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:29:32,935 INFO L87 Difference]: Start difference. First operand 3403 states and 5930 transitions. Second operand 8 states. [2020-10-14 01:29:33,076 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:29:33,559 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:29:56,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:29:56,359 INFO L93 Difference]: Finished difference Result 13645 states and 24141 transitions. [2020-10-14 01:29:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:29:56,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 959 [2020-10-14 01:29:56,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:29:56,422 INFO L225 Difference]: With dead ends: 13645 [2020-10-14 01:29:56,422 INFO L226 Difference]: Without dead ends: 10248 [2020-10-14 01:29:56,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 01:29:56,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10248 states. [2020-10-14 01:29:56,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10248 to 10194. [2020-10-14 01:29:56,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10194 states. [2020-10-14 01:29:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10194 states to 10194 states and 17938 transitions. [2020-10-14 01:29:56,800 INFO L78 Accepts]: Start accepts. Automaton has 10194 states and 17938 transitions. Word has length 959 [2020-10-14 01:29:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:29:56,801 INFO L479 AbstractCegarLoop]: Abstraction has 10194 states and 17938 transitions. [2020-10-14 01:29:56,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:29:56,801 INFO L276 IsEmpty]: Start isEmpty. Operand 10194 states and 17938 transitions. [2020-10-14 01:29:56,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2020-10-14 01:29:56,883 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:29:56,884 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 01:29:56,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 01:29:56,885 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:29:56,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:29:56,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1838846661, now seen corresponding path program 1 times [2020-10-14 01:29:56,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:29:56,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422169725] [2020-10-14 01:29:56,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:29:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:29:57,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:29:59,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:02,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:02,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 984 [2020-10-14 01:30:02,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:30:02,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5106 [2020-10-14 01:30:02,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:02,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:02,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:30:02,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:30:02,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 01:30:02,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:02,696 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:30:02,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:30:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:02,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:02,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:02,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:30:02,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:02,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-14 01:30:02,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:02,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:30:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:30:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:30:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:02,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:30:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:02,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:02,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-14 01:30:02,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:02,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 01:30:02,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:02,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:02,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:30:02,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:30:02,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-14 01:30:02,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:03,553 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:30:03,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422169725] [2020-10-14 01:30:03,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:30:03,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:30:03,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227006562] [2020-10-14 01:30:03,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:30:03,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:30:03,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:30:03,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:30:03,557 INFO L87 Difference]: Start difference. First operand 10194 states and 17938 transitions. Second operand 7 states. [2020-10-14 01:30:03,699 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:30:04,498 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:30:20,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:30:20,905 INFO L93 Difference]: Finished difference Result 30459 states and 56028 transitions. [2020-10-14 01:30:20,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:30:20,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 966 [2020-10-14 01:30:20,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:30:21,003 INFO L225 Difference]: With dead ends: 30459 [2020-10-14 01:30:21,003 INFO L226 Difference]: Without dead ends: 20271 [2020-10-14 01:30:21,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 01:30:21,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20271 states. [2020-10-14 01:30:21,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20271 to 19906. [2020-10-14 01:30:21,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19906 states. [2020-10-14 01:30:21,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19906 states to 19906 states and 34205 transitions. [2020-10-14 01:30:21,558 INFO L78 Accepts]: Start accepts. Automaton has 19906 states and 34205 transitions. Word has length 966 [2020-10-14 01:30:21,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:30:21,559 INFO L479 AbstractCegarLoop]: Abstraction has 19906 states and 34205 transitions. [2020-10-14 01:30:21,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:30:21,559 INFO L276 IsEmpty]: Start isEmpty. Operand 19906 states and 34205 transitions. [2020-10-14 01:30:21,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 977 [2020-10-14 01:30:21,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:30:21,636 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:21,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 01:30:21,638 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:30:21,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:30:21,639 INFO L82 PathProgramCache]: Analyzing trace with hash -337052945, now seen corresponding path program 1 times [2020-10-14 01:30:21,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:30:21,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896700807] [2020-10-14 01:30:21,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:30:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:22,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:23,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:27,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:27,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 994 [2020-10-14 01:30:27,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:30:27,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-14 01:30:27,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:27,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:30:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:30:27,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 01:30:27,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:30:27,573 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:30:27,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:30:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:27,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:27,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:27,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:30:27,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:27,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-14 01:30:27,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:27,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:27,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:30:27,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:30:27,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:30:27,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:27,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:30:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:27,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:27,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:27,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 01:30:27,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:27,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 01:30:27,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:27,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:27,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:30:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:30:27,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 01:30:27,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:30:28,376 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:30:28,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896700807] [2020-10-14 01:30:28,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:30:28,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 01:30:28,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305883397] [2020-10-14 01:30:28,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:30:28,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:30:28,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:30:28,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:30:28,380 INFO L87 Difference]: Start difference. First operand 19906 states and 34205 transitions. Second operand 7 states. [2020-10-14 01:30:28,525 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-10-14 01:30:29,365 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-14 01:30:46,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:30:46,105 INFO L93 Difference]: Finished difference Result 47715 states and 84849 transitions. [2020-10-14 01:30:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 01:30:46,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 976 [2020-10-14 01:30:46,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:30:46,227 INFO L225 Difference]: With dead ends: 47715 [2020-10-14 01:30:46,227 INFO L226 Difference]: Without dead ends: 27815 [2020-10-14 01:30:46,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 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 01:30:46,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27815 states. [2020-10-14 01:30:46,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27815 to 26801. [2020-10-14 01:30:46,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26801 states. [2020-10-14 01:30:47,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26801 states to 26801 states and 45175 transitions. [2020-10-14 01:30:47,030 INFO L78 Accepts]: Start accepts. Automaton has 26801 states and 45175 transitions. Word has length 976 [2020-10-14 01:30:47,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:30:47,031 INFO L479 AbstractCegarLoop]: Abstraction has 26801 states and 45175 transitions. [2020-10-14 01:30:47,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:30:47,031 INFO L276 IsEmpty]: Start isEmpty. Operand 26801 states and 45175 transitions. [2020-10-14 01:30:47,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 980 [2020-10-14 01:30:47,124 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:30:47,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:30:47,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 01:30:47,127 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:30:47,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:30:47,128 INFO L82 PathProgramCache]: Analyzing trace with hash 368122924, now seen corresponding path program 1 times [2020-10-14 01:30:47,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:30:47,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894929371] [2020-10-14 01:30:47,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:30:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:47,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:48,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:52,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:52,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 997 [2020-10-14 01:30:52,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:30:52,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5279 [2020-10-14 01:30:52,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:52,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 01:30:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 01:30:52,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 01:30:52,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:30:53,082 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:30:53,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:30:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:53,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:53,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:30:53,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:53,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 01:30:53,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:53,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:30:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:30:53,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 01:30:53,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:30:53,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:30:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:30:53,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:30:53,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:30:53,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 01:30:53,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:30:53,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 01:30:53,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:30:53,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:30:53,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:30:53,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:30:53,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 01:30:53,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:30:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 01:30:53,792 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894929371] [2020-10-14 01:30:53,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 01:30:53,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-14 01:30:53,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67557888] [2020-10-14 01:30:53,794 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 01:30:53,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:30:53,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 01:30:53,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 01:30:53,795 INFO L87 Difference]: Start difference. First operand 26801 states and 45175 transitions. Second operand 8 states. [2020-10-14 01:30:53,954 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2020-10-14 01:30:54,306 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-10-14 01:30:55,748 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 140 [2020-10-14 01:31:20,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:31:20,568 INFO L93 Difference]: Finished difference Result 81354 states and 143709 transitions. [2020-10-14 01:31:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 01:31:20,569 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 979 [2020-10-14 01:31:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:31:20,771 INFO L225 Difference]: With dead ends: 81354 [2020-10-14 01:31:20,772 INFO L226 Difference]: Without dead ends: 54559 [2020-10-14 01:31:20,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 01:31:20,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54559 states. [2020-10-14 01:31:22,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54559 to 54053. [2020-10-14 01:31:22,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54053 states. [2020-10-14 01:31:22,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54053 states to 54053 states and 89778 transitions. [2020-10-14 01:31:22,264 INFO L78 Accepts]: Start accepts. Automaton has 54053 states and 89778 transitions. Word has length 979 [2020-10-14 01:31:22,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:31:22,265 INFO L479 AbstractCegarLoop]: Abstraction has 54053 states and 89778 transitions. [2020-10-14 01:31:22,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 01:31:22,265 INFO L276 IsEmpty]: Start isEmpty. Operand 54053 states and 89778 transitions. [2020-10-14 01:31:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 993 [2020-10-14 01:31:22,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:31:22,418 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:22,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 01:31:22,419 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:31:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:31:22,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1934140582, now seen corresponding path program 1 times [2020-10-14 01:31:22,420 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:31:22,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248678542] [2020-10-14 01:31:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:31:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:22,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:23,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:27,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:27,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1012 [2020-10-14 01:31:27,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 01:31:27,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-14 01:31:27,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:27,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:31:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 01:31:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 01:31:27,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:27,891 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:31:27,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:31:27,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:27,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:27,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:27,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:31:27,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:27,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 01:31:27,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:27,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:31:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:31:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:31:27,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 01:31:27,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:31:27,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:27,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:28,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:28,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-14 01:31:28,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:28,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-14 01:31:28,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:28,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:31:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:31:28,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 01:31:28,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:28,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-14 01:31:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:28,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:28,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:28,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 01:31:28,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:28,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-14 01:31:28,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:28,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:31:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:31:28,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 01:31:28,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:28,694 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:31:28,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248678542] [2020-10-14 01:31:28,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:31:28,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:31:28,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045790607] [2020-10-14 01:31:28,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:31:28,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:31:28,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:31:28,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:31:28,697 INFO L87 Difference]: Start difference. First operand 54053 states and 89778 transitions. Second operand 7 states. [2020-10-14 01:31:28,835 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:31:29,952 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-10-14 01:31:47,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 01:31:47,079 INFO L93 Difference]: Finished difference Result 164210 states and 304519 transitions. [2020-10-14 01:31:47,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 01:31:47,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 992 [2020-10-14 01:31:47,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 01:31:47,729 INFO L225 Difference]: With dead ends: 164210 [2020-10-14 01:31:47,729 INFO L226 Difference]: Without dead ends: 110163 [2020-10-14 01:31:47,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 01:31:47,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110163 states. [2020-10-14 01:31:50,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110163 to 109036. [2020-10-14 01:31:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109036 states. [2020-10-14 01:31:51,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109036 states to 109036 states and 187249 transitions. [2020-10-14 01:31:51,456 INFO L78 Accepts]: Start accepts. Automaton has 109036 states and 187249 transitions. Word has length 992 [2020-10-14 01:31:51,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 01:31:51,457 INFO L479 AbstractCegarLoop]: Abstraction has 109036 states and 187249 transitions. [2020-10-14 01:31:51,457 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 01:31:51,458 INFO L276 IsEmpty]: Start isEmpty. Operand 109036 states and 187249 transitions. [2020-10-14 01:31:51,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 996 [2020-10-14 01:31:51,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 01:31:51,820 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:51,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 01:31:51,821 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 01:31:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 01:31:51,822 INFO L82 PathProgramCache]: Analyzing trace with hash -12861903, now seen corresponding path program 1 times [2020-10-14 01:31:51,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 01:31:51,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742821923] [2020-10-14 01:31:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 01:31:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:51,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:52,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:52,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:56,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:56,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1015 [2020-10-14 01:31:56,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 01:31:56,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-14 01:31:56,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:56,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:31:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-14 01:31:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 01:31:56,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:57,230 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-14 01:31:57,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 01:31:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:57,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:57,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:57,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 01:31:57,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:57,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 01:31:57,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:57,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 01:31:57,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:31:57,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 01:31:57,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:57,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 01:31:57,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:57,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:57,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:57,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 01:31:57,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:57,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 01:31:57,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:57,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:57,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 01:31:57,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 01:31:57,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 01:31:57,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:57,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 01:31:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 01:31:57,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 01:31:57,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 01:31:57,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-14 01:31:57,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 01:31:57,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-14 01:31:57,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 01:31:57,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 01:31:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 01:31:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 01:31:57,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 01:31:57,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 01:31:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 47 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 01:31:57,777 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742821923] [2020-10-14 01:31:57,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 01:31:57,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 01:31:57,778 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639632643] [2020-10-14 01:31:57,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 01:31:57,779 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 01:31:57,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 01:31:57,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 01:31:57,780 INFO L87 Difference]: Start difference. First operand 109036 states and 187249 transitions. Second operand 7 states. [2020-10-14 01:31:57,991 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-14 01:31:58,174 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 129