/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/Problem12_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:51:42,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:51:42,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:51:42,957 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:51:42,958 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:51:42,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:51:42,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:51:42,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:51:42,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:51:42,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:51:42,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:51:42,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:51:42,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:51:42,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:51:42,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:51:43,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:51:43,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:51:43,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:51:43,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:51:43,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:51:43,019 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:51:43,020 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:51:43,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:51:43,023 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:51:43,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:51:43,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:51:43,029 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:51:43,033 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:51:43,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:51:43,035 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:51:43,035 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:51:43,036 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:51:43,037 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:51:43,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:51:43,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:51:43,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:51:43,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:51:43,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:51:43,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:51:43,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:51:43,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:51:43,045 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 02:51:43,075 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:51:43,075 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:51:43,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:51:43,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:51:43,078 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:51:43,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:51:43,078 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:51:43,079 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:51:43,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:51:43,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:51:43,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:51:43,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:51:43,080 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:51:43,080 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:51:43,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:51:43,080 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:51:43,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:51:43,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:51:43,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:51:43,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:51:43,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:51:43,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:51:43,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:51:43,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:51:43,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:51:43,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:51:43,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:51:43,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:51:43,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:51:43,084 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 02:51:43,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:51:43,429 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:51:43,433 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:51:43,435 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:51:43,436 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:51:43,437 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41.c [2020-10-14 02:51:43,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81124bc17/469cee2609374c67954913f27ba093b0/FLAG50399d4b2 [2020-10-14 02:51:44,399 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:51:44,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label41.c [2020-10-14 02:51:44,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81124bc17/469cee2609374c67954913f27ba093b0/FLAG50399d4b2 [2020-10-14 02:51:44,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/81124bc17/469cee2609374c67954913f27ba093b0 [2020-10-14 02:51:44,975 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:51:44,977 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:51:44,978 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:51:44,979 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:51:44,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:51:44,983 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:51:44" (1/1) ... [2020-10-14 02:51:44,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a2c32e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:44, skipping insertion in model container [2020-10-14 02:51:44,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:51:44" (1/1) ... [2020-10-14 02:51:44,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:51:45,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:51:46,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:51:46,689 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:51:47,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:51:47,412 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:51:47,413 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:47 WrapperNode [2020-10-14 02:51:47,413 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:51:47,414 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:51:47,414 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:51:47,414 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:51:47,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:47" (1/1) ... [2020-10-14 02:51:47,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:47" (1/1) ... [2020-10-14 02:51:47,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:47" (1/1) ... [2020-10-14 02:51:47,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:47" (1/1) ... [2020-10-14 02:51:47,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:47" (1/1) ... [2020-10-14 02:51:47,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:47" (1/1) ... [2020-10-14 02:51:47,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:47" (1/1) ... [2020-10-14 02:51:47,680 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:51:47,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:51:47,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:51:47,681 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:51:47,682 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:47" (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 02:51:47,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:51:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:51:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:51:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:51:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:51:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:51:47,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:51:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:51:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:51:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:51:47,751 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:51:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:51:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:51:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:51:47,752 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:51:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:51:47,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:51:53,098 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:51:53,100 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:51:53,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:51:53 BoogieIcfgContainer [2020-10-14 02:51:53,122 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:51:53,123 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:51:53,124 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:51:53,127 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:51:53,128 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:51:44" (1/3) ... [2020-10-14 02:51:53,129 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc4be0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:51:53, skipping insertion in model container [2020-10-14 02:51:53,129 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:51:47" (2/3) ... [2020-10-14 02:51:53,130 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bc4be0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:51:53, skipping insertion in model container [2020-10-14 02:51:53,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:51:53" (3/3) ... [2020-10-14 02:51:53,132 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label41.c [2020-10-14 02:51:53,148 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:51:53,161 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:51:53,182 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:51:53,221 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:51:53,222 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:51:53,222 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:51:53,222 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:51:53,222 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:51:53,222 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:51:53,222 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:51:53,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:51:53,264 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:51:53,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 02:51:53,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:51:53,277 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] [2020-10-14 02:51:53,278 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:51:53,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:51:53,288 INFO L82 PathProgramCache]: Analyzing trace with hash -602243931, now seen corresponding path program 1 times [2020-10-14 02:51:53,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:51:53,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062195029] [2020-10-14 02:51:53,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:51:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:53,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:54,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:54,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 02:51:54,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-14 02:51:54,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:54,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:51:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:51:54,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 02:51:54,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:51:54,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:51:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:51:54,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:51:54,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:51:54,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:51:54,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:51:54,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 02:51:54,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:51:54,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:51:54,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:51:54,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:51:54,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:51:54,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:51:54,475 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 02:51:54,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062195029] [2020-10-14 02:51:54,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:51:54,480 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:51:54,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66726753] [2020-10-14 02:51:54,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:51:54,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:51:54,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:51:54,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:51:54,514 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:52:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:04,453 INFO L93 Difference]: Finished difference Result 2487 states and 4748 transitions. [2020-10-14 02:52:04,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:52:04,456 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-14 02:52:04,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:04,505 INFO L225 Difference]: With dead ends: 2487 [2020-10-14 02:52:04,505 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:52:04,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:52:04,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:52:04,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2020-10-14 02:52:04,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-10-14 02:52:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2484 transitions. [2020-10-14 02:52:04,716 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2484 transitions. Word has length 58 [2020-10-14 02:52:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:04,718 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 2484 transitions. [2020-10-14 02:52:04,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:52:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2484 transitions. [2020-10-14 02:52:04,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 02:52:04,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:04,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:52:04,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:52:04,733 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:04,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:04,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1897209019, now seen corresponding path program 1 times [2020-10-14 02:52:04,734 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:04,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672665157] [2020-10-14 02:52:04,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:05,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:06,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:06,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 02:52:06,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:52:06,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1452 [2020-10-14 02:52:06,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:06,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:06,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:52:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 02:52:06,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:52:06,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:06,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:06,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:06,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:06,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:06,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:52:06,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:06,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:06,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:06,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:06,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:06,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:06,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:52:06,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:06,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-14 02:52:06,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:06,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:06,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:52:06,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:06,645 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:52:06,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672665157] [2020-10-14 02:52:06,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:06,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:52:06,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767257881] [2020-10-14 02:52:06,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:52:06,652 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:06,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:52:06,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:52:06,653 INFO L87 Difference]: Start difference. First operand 1564 states and 2484 transitions. Second operand 5 states. [2020-10-14 02:52:20,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:20,722 INFO L93 Difference]: Finished difference Result 4686 states and 7520 transitions. [2020-10-14 02:52:20,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:52:20,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-14 02:52:20,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:20,743 INFO L225 Difference]: With dead ends: 4686 [2020-10-14 02:52:20,743 INFO L226 Difference]: Without dead ends: 3128 [2020-10-14 02:52:20,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:52:20,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3128 states. [2020-10-14 02:52:20,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3128 to 3120. [2020-10-14 02:52:20,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3120 states. [2020-10-14 02:52:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4527 transitions. [2020-10-14 02:52:20,840 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4527 transitions. Word has length 137 [2020-10-14 02:52:20,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:20,841 INFO L479 AbstractCegarLoop]: Abstraction has 3120 states and 4527 transitions. [2020-10-14 02:52:20,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:52:20,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4527 transitions. [2020-10-14 02:52:20,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-14 02:52:20,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:20,847 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:52:20,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:52:20,847 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:20,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:20,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1716530507, now seen corresponding path program 1 times [2020-10-14 02:52:20,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:20,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469444705] [2020-10-14 02:52:20,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:20,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:21,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:21,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:22,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:22,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-14 02:52:22,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:52:22,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1156 [2020-10-14 02:52:22,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:22,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 02:52:22,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 02:52:22,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:22,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:22,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:22,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:22,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:22,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:22,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:22,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:52:22,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:22,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:22,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:22,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:22,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:22,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:22,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:22,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 02:52:22,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:22,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-14 02:52:22,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:22,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:22,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:22,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:22,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 02:52:22,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:22,330 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:52:22,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469444705] [2020-10-14 02:52:22,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:22,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:52:22,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27675300] [2020-10-14 02:52:22,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:52:22,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:22,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:52:22,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:52:22,334 INFO L87 Difference]: Start difference. First operand 3120 states and 4527 transitions. Second operand 5 states. [2020-10-14 02:52:37,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:37,107 INFO L93 Difference]: Finished difference Result 9351 states and 13757 transitions. [2020-10-14 02:52:37,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:52:37,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-14 02:52:37,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:37,158 INFO L225 Difference]: With dead ends: 9351 [2020-10-14 02:52:37,159 INFO L226 Difference]: Without dead ends: 6237 [2020-10-14 02:52:37,172 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:52:37,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6237 states. [2020-10-14 02:52:37,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6237 to 6229. [2020-10-14 02:52:37,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6229 states. [2020-10-14 02:52:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6229 states to 6229 states and 8207 transitions. [2020-10-14 02:52:37,460 INFO L78 Accepts]: Start accepts. Automaton has 6229 states and 8207 transitions. Word has length 145 [2020-10-14 02:52:37,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:37,465 INFO L479 AbstractCegarLoop]: Abstraction has 6229 states and 8207 transitions. [2020-10-14 02:52:37,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:52:37,469 INFO L276 IsEmpty]: Start isEmpty. Operand 6229 states and 8207 transitions. [2020-10-14 02:52:37,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-14 02:52:37,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:37,481 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:52:37,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:52:37,482 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:37,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:37,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1532790504, now seen corresponding path program 1 times [2020-10-14 02:52:37,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:37,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1915751187] [2020-10-14 02:52:37,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:37,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:37,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:38,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:38,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-14 02:52:38,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:52:38,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-10-14 02:52:38,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:38,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:52:38,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-14 02:52:38,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 02:52:38,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:52:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:38,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:38,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:38,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:52:38,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:38,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:52:38,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:38,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:38,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:52:38,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:38,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:52:38,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:38,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:52:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:38,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:38,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:52:38,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 02:52:38,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:52:38,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 02:52:38,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:52:38,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:52:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:52:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:52:38,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 02:52:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:52:39,041 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:52:39,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1915751187] [2020-10-14 02:52:39,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:52:39,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 02:52:39,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68061999] [2020-10-14 02:52:39,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 02:52:39,047 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:52:39,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 02:52:39,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:52:39,049 INFO L87 Difference]: Start difference. First operand 6229 states and 8207 transitions. Second operand 6 states. [2020-10-14 02:52:56,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:52:56,701 INFO L93 Difference]: Finished difference Result 15562 states and 21239 transitions. [2020-10-14 02:52:56,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 02:52:56,704 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-10-14 02:52:56,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:52:56,762 INFO L225 Difference]: With dead ends: 15562 [2020-10-14 02:52:56,762 INFO L226 Difference]: Without dead ends: 9339 [2020-10-14 02:52:56,780 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:52:56,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9339 states. [2020-10-14 02:52:57,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9339 to 9335. [2020-10-14 02:52:57,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9335 states. [2020-10-14 02:52:57,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9335 states to 9335 states and 12036 transitions. [2020-10-14 02:52:57,093 INFO L78 Accepts]: Start accepts. Automaton has 9335 states and 12036 transitions. Word has length 146 [2020-10-14 02:52:57,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:52:57,094 INFO L479 AbstractCegarLoop]: Abstraction has 9335 states and 12036 transitions. [2020-10-14 02:52:57,094 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 02:52:57,094 INFO L276 IsEmpty]: Start isEmpty. Operand 9335 states and 12036 transitions. [2020-10-14 02:52:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-14 02:52:57,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:52:57,102 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:52:57,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:52:57,102 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:52:57,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:52:57,103 INFO L82 PathProgramCache]: Analyzing trace with hash 912367676, now seen corresponding path program 1 times [2020-10-14 02:52:57,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:52:57,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703102077] [2020-10-14 02:52:57,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:52:57,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:52:57,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:57,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:58,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:58,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:59,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:52:59,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:02,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:02,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-14 02:53:02,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:53:02,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 02:53:02,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:02,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:02,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:02,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:53:02,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:53:02,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:02,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:02,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:02,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:02,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:02,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:02,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:53:02,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:02,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:02,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:02,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:02,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:02,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:02,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:02,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:53:02,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:02,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-14 02:53:02,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:02,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:53:02,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 02:53:02,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-14 02:53:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:02,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:02,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:02,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 02:53:02,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:02,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-14 02:53:02,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:02,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:02,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:02,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:53:02,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 02:53:02,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:53:02,743 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:53:02,747 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703102077] [2020-10-14 02:53:02,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:02,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:53:02,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322426556] [2020-10-14 02:53:02,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:53:02,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:02,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:53:02,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:53:02,750 INFO L87 Difference]: Start difference. First operand 9335 states and 12036 transitions. Second operand 7 states. [2020-10-14 02:53:28,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:53:28,097 INFO L93 Difference]: Finished difference Result 35219 states and 48054 transitions. [2020-10-14 02:53:28,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:53:28,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 207 [2020-10-14 02:53:28,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:53:28,213 INFO L225 Difference]: With dead ends: 35219 [2020-10-14 02:53:28,213 INFO L226 Difference]: Without dead ends: 25890 [2020-10-14 02:53:28,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:53:28,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25890 states. [2020-10-14 02:53:29,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25890 to 24334. [2020-10-14 02:53:29,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24334 states. [2020-10-14 02:53:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24334 states to 24334 states and 29978 transitions. [2020-10-14 02:53:29,705 INFO L78 Accepts]: Start accepts. Automaton has 24334 states and 29978 transitions. Word has length 207 [2020-10-14 02:53:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:29,706 INFO L479 AbstractCegarLoop]: Abstraction has 24334 states and 29978 transitions. [2020-10-14 02:53:29,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:53:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 24334 states and 29978 transitions. [2020-10-14 02:53:29,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-14 02:53:29,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:29,712 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:53:29,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:53:29,713 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:29,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:29,714 INFO L82 PathProgramCache]: Analyzing trace with hash 1979928416, now seen corresponding path program 1 times [2020-10-14 02:53:29,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:29,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711239297] [2020-10-14 02:53:29,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:29,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:29,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:29,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:31,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:31,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-14 02:53:31,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:53:31,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1514 [2020-10-14 02:53:31,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:31,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:31,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:31,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-14 02:53:31,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-14 02:53:31,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:31,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:31,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:31,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:31,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:31,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:31,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:53:31,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:31,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:31,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:31,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:31,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:31,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:31,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:31,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 02:53:31,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:31,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 02:53:31,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:31,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:31,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-14 02:53:31,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:53:31,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711239297] [2020-10-14 02:53:31,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:31,650 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:53:31,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443754793] [2020-10-14 02:53:31,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:53:31,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:31,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:53:31,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:53:31,652 INFO L87 Difference]: Start difference. First operand 24334 states and 29978 transitions. Second operand 5 states. [2020-10-14 02:53:46,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:53:46,156 INFO L93 Difference]: Finished difference Result 54958 states and 70407 transitions. [2020-10-14 02:53:46,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:53:46,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-14 02:53:46,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:53:46,350 INFO L225 Difference]: With dead ends: 54958 [2020-10-14 02:53:46,350 INFO L226 Difference]: Without dead ends: 30630 [2020-10-14 02:53:46,446 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 02:53:46,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30630 states. [2020-10-14 02:53:47,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30630 to 30596. [2020-10-14 02:53:47,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30596 states. [2020-10-14 02:53:47,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30596 states to 30596 states and 37632 transitions. [2020-10-14 02:53:47,270 INFO L78 Accepts]: Start accepts. Automaton has 30596 states and 37632 transitions. Word has length 206 [2020-10-14 02:53:47,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:53:47,271 INFO L479 AbstractCegarLoop]: Abstraction has 30596 states and 37632 transitions. [2020-10-14 02:53:47,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:53:47,271 INFO L276 IsEmpty]: Start isEmpty. Operand 30596 states and 37632 transitions. [2020-10-14 02:53:47,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-14 02:53:47,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:53:47,277 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 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 02:53:47,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:53:47,278 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:53:47,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:53:47,278 INFO L82 PathProgramCache]: Analyzing trace with hash 346501328, now seen corresponding path program 1 times [2020-10-14 02:53:47,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:53:47,279 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310684447] [2020-10-14 02:53:47,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:53:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:47,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:47,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:47,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:48,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:48,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:50,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:51,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:51,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-14 02:53:51,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:53:51,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3700 [2020-10-14 02:53:51,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:51,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:51,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:51,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 02:53:51,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:53:51,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:53:51,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:53:51,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:51,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:51,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:51,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:53:51,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:51,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:53:51,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:51,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:51,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:53:51,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:51,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:53:51,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:51,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:53:51,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:51,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:51,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:51,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 02:53:51,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:51,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-14 02:53:51,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:51,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:51,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:53:51,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:53:51,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 02:53:51,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:53:51,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 02:53:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:53:51,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:53:51,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:53:51,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 02:53:51,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:53:51,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-14 02:53:51,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:53:51,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:53:51,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:53:51,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:53:51,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 02:53:51,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 02:53:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 169 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:53:51,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310684447] [2020-10-14 02:53:51,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:53:51,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:53:51,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769640569] [2020-10-14 02:53:51,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:53:51,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:53:51,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:53:51,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:53:51,589 INFO L87 Difference]: Start difference. First operand 30596 states and 37632 transitions. Second operand 7 states. [2020-10-14 02:54:14,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:14,693 INFO L93 Difference]: Finished difference Result 75534 states and 104028 transitions. [2020-10-14 02:54:14,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:54:14,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-14 02:54:14,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:14,942 INFO L225 Difference]: With dead ends: 75534 [2020-10-14 02:54:14,943 INFO L226 Difference]: Without dead ends: 44948 [2020-10-14 02:54:15,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:54:15,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44948 states. [2020-10-14 02:54:16,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44948 to 43504. [2020-10-14 02:54:16,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43504 states. [2020-10-14 02:54:16,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43504 states to 43504 states and 56621 transitions. [2020-10-14 02:54:16,332 INFO L78 Accepts]: Start accepts. Automaton has 43504 states and 56621 transitions. Word has length 213 [2020-10-14 02:54:16,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:54:16,332 INFO L479 AbstractCegarLoop]: Abstraction has 43504 states and 56621 transitions. [2020-10-14 02:54:16,333 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:54:16,333 INFO L276 IsEmpty]: Start isEmpty. Operand 43504 states and 56621 transitions. [2020-10-14 02:54:16,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-14 02:54:16,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:54:16,342 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 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 02:54:16,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:54:16,343 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:54:16,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:54:16,343 INFO L82 PathProgramCache]: Analyzing trace with hash 357604797, now seen corresponding path program 1 times [2020-10-14 02:54:16,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:54:16,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801138734] [2020-10-14 02:54:16,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:54:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:16,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:16,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:17,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:17,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:20,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:20,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-14 02:54:20,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:54:20,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3643 [2020-10-14 02:54:20,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:20,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:20,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:20,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 02:54:20,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 02:54:20,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:20,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:54:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:20,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:20,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:20,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:54:20,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:20,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 02:54:20,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:20,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:54:20,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:20,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:54:20,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:20,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:54:20,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:20,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:20,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:20,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 02:54:20,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:20,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-14 02:54:20,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:20,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:54:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:54:20,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 02:54:20,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:20,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 02:54:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:54:20,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:54:20,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:54:20,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-14 02:54:20,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:54:20,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-14 02:54:20,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:54:20,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:54:20,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:54:20,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:54:20,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-14 02:54:20,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:54:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:54:20,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801138734] [2020-10-14 02:54:20,663 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:54:20,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:54:20,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599361677] [2020-10-14 02:54:20,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:54:20,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:54:20,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:54:20,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:54:20,666 INFO L87 Difference]: Start difference. First operand 43504 states and 56621 transitions. Second operand 8 states. [2020-10-14 02:54:59,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:54:59,239 INFO L93 Difference]: Finished difference Result 108279 states and 148982 transitions. [2020-10-14 02:54:59,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 02:54:59,241 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 248 [2020-10-14 02:54:59,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:54:59,576 INFO L225 Difference]: With dead ends: 108279 [2020-10-14 02:54:59,576 INFO L226 Difference]: Without dead ends: 65662 [2020-10-14 02:54:59,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 02:54:59,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65662 states. [2020-10-14 02:55:02,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65662 to 58554. [2020-10-14 02:55:02,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58554 states. [2020-10-14 02:55:02,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58554 states to 58554 states and 74946 transitions. [2020-10-14 02:55:02,597 INFO L78 Accepts]: Start accepts. Automaton has 58554 states and 74946 transitions. Word has length 248 [2020-10-14 02:55:02,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:55:02,597 INFO L479 AbstractCegarLoop]: Abstraction has 58554 states and 74946 transitions. [2020-10-14 02:55:02,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 02:55:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 58554 states and 74946 transitions. [2020-10-14 02:55:02,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-14 02:55:02,619 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:55:02,620 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:55:02,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:55:02,620 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:55:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:55:02,621 INFO L82 PathProgramCache]: Analyzing trace with hash -467334054, now seen corresponding path program 1 times [2020-10-14 02:55:02,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:55:02,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053535626] [2020-10-14 02:55:02,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:55:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:02,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:03,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:05,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:07,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:07,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-14 02:55:07,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:55:07,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-14 02:55:07,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:07,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:55:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 02:55:07,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:55:07,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:55:07,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:55:07,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:07,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:07,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:07,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:55:07,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:07,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:55:07,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:07,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:07,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:55:07,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:07,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:55:07,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:07,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:55:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:07,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:08,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:08,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:55:08,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:08,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-14 02:55:08,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:08,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:08,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:55:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:55:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 02:55:08,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:08,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-14 02:55:08,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:55:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:55:08,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:55:08,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:55:08,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:55:08,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-14 02:55:08,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:55:08,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:55:08,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:55:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:55:08,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 02:55:08,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:55:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 222 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:55:08,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053535626] [2020-10-14 02:55:08,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:55:08,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 02:55:08,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153459252] [2020-10-14 02:55:08,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 02:55:08,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:55:08,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 02:55:08,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 02:55:08,506 INFO L87 Difference]: Start difference. First operand 58554 states and 74946 transitions. Second operand 8 states.