/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:07:29,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:07:29,724 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:07:29,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:07:29,787 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:07:29,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:07:29,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:07:29,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:07:29,806 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:07:29,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:07:29,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:07:29,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:07:29,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:07:29,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:07:29,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:07:29,825 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:07:29,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:07:29,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:07:29,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:07:29,840 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:07:29,842 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:07:29,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:07:29,848 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:07:29,849 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:07:29,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:07:29,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:07:29,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:07:29,854 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:07:29,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:07:29,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:07:29,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:07:29,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:07:29,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:07:29,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:07:29,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:07:29,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:07:29,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:07:29,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:07:29,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:07:29,876 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:07:29,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:07:29,878 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 [2020-10-29 05:07:29,905 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:07:29,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:07:29,907 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:07:29,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:07:29,908 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:07:29,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:07:29,909 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:07:29,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:07:29,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:07:29,909 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:07:29,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:07:29,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:07:29,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:07:29,910 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:07:29,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:07:29,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:07:29,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:07:29,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:07:29,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:07:29,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:07:29,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:07:29,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:07:29,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:07:29,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:07:29,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:07:29,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:07:29,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:07:29,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:07:29,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:07:29,914 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:07:30,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:07:30,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:07:30,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:07:30,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:07:30,310 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:07:30,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label20.c [2020-10-29 05:07:30,402 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3336c258a/e059e5813af346e7b777c46fdbb34e28/FLAG098135031 [2020-10-29 05:07:31,527 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:07:31,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label20.c [2020-10-29 05:07:31,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3336c258a/e059e5813af346e7b777c46fdbb34e28/FLAG098135031 [2020-10-29 05:07:31,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3336c258a/e059e5813af346e7b777c46fdbb34e28 [2020-10-29 05:07:31,947 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:07:31,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:07:31,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:07:31,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:07:31,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:07:31,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:07:31" (1/1) ... [2020-10-29 05:07:31,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5437f856 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:07:31, skipping insertion in model container [2020-10-29 05:07:31,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:07:31" (1/1) ... [2020-10-29 05:07:31,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:07:32,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:07:33,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:07:33,587 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:07:34,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:07:34,325 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:07:34,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:07:34 WrapperNode [2020-10-29 05:07:34,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:07:34,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:07:34,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:07:34,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:07:34,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:07:34" (1/1) ... [2020-10-29 05:07:34,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:07:34" (1/1) ... [2020-10-29 05:07:34,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:07:34" (1/1) ... [2020-10-29 05:07:34,425 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:07:34" (1/1) ... [2020-10-29 05:07:34,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:07:34" (1/1) ... [2020-10-29 05:07:34,598 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:07:34" (1/1) ... [2020-10-29 05:07:34,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:07:34" (1/1) ... [2020-10-29 05:07:34,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:07:34,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:07:34,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:07:34,646 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:07:34,647 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:07:34" (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 [2020-10-29 05:07:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:07:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:07:34,727 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:07:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:07:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:07:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:07:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:07:34,728 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:07:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:07:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:07:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:07:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:07:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:07:34,729 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:07:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:07:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:07:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:07:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:07:34,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:07:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:07:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:07:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:07:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:07:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:07:34,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:07:40,156 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:07:40,157 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:07:40,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:07:40 BoogieIcfgContainer [2020-10-29 05:07:40,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:07:40,165 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:07:40,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:07:40,169 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:07:40,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:07:31" (1/3) ... [2020-10-29 05:07:40,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534c3a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:07:40, skipping insertion in model container [2020-10-29 05:07:40,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:07:34" (2/3) ... [2020-10-29 05:07:40,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534c3a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:07:40, skipping insertion in model container [2020-10-29 05:07:40,171 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:07:40" (3/3) ... [2020-10-29 05:07:40,173 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label20.c [2020-10-29 05:07:40,185 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:07:40,191 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:07:40,204 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:07:40,244 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:07:40,244 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:07:40,245 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:07:40,245 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:07:40,245 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:07:40,245 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:07:40,245 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:07:40,245 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:07:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-29 05:07:40,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 807 [2020-10-29 05:07:40,343 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:07:40,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:07:40,346 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:07:40,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:07:40,398 INFO L82 PathProgramCache]: Analyzing trace with hash -770030740, now seen corresponding path program 1 times [2020-10-29 05:07:40,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:07:40,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [724856012] [2020-10-29 05:07:40,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:07:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:41,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:45,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:46,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:46,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 822 [2020-10-29 05:07:46,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:07:46,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-29 05:07:46,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:46,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:07:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:07:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 813 [2020-10-29 05:07:46,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 05:07:47,246 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:07:47,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:07:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:47,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:47,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:07:47,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:07:47,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:07:47,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 05:07:47,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:07:47,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:07:47,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:07:47,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:07:47,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:07:47,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:07:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:07:48,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [724856012] [2020-10-29 05:07:48,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:07:48,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 05:07:48,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312314213] [2020-10-29 05:07:48,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:07:48,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:07:48,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:07:48,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:07:48,312 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-29 05:07:57,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:07:57,713 INFO L93 Difference]: Finished difference Result 2677 states and 5143 transitions. [2020-10-29 05:07:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:07:57,716 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 806 [2020-10-29 05:07:57,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:07:57,759 INFO L225 Difference]: With dead ends: 2677 [2020-10-29 05:07:57,759 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:07:57,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:07:57,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:07:57,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:07:57,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:07:57,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 3006 transitions. [2020-10-29 05:07:57,935 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 3006 transitions. Word has length 806 [2020-10-29 05:07:57,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:07:57,938 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 3006 transitions. [2020-10-29 05:07:57,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:07:57,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 3006 transitions. [2020-10-29 05:07:57,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2020-10-29 05:07:57,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:07:57,971 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:07:57,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:07:57,972 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:07:57,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:07:57,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1234876978, now seen corresponding path program 1 times [2020-10-29 05:07:57,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:07:57,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323573084] [2020-10-29 05:07:57,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:07:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:07:58,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:07:59,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:02,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:03,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:03,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 832 [2020-10-29 05:08:03,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:08:03,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-29 05:08:03,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:03,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:08:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:08:03,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 786 [2020-10-29 05:08:03,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:05,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:08:05,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:05,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:05,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:05,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:08:05,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:05,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:08:05,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:05,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:08:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:05,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:08:05,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:05,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:08:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:05,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:05,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:05,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:08:05,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:05,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:08:05,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:05,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:08:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:05,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:08:05,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:08:11,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323573084] [2020-10-29 05:08:11,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:08:11,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:08:11,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855777004] [2020-10-29 05:08:11,163 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:08:11,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:08:11,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:08:11,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:08:11,164 INFO L87 Difference]: Start difference. First operand 1690 states and 3006 transitions. Second operand 5 states. [2020-10-29 05:08:11,430 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 110 [2020-10-29 05:08:22,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:08:22,338 INFO L93 Difference]: Finished difference Result 4173 states and 7578 transitions. [2020-10-29 05:08:22,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:08:22,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 814 [2020-10-29 05:08:22,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:08:22,350 INFO L225 Difference]: With dead ends: 4173 [2020-10-29 05:08:22,350 INFO L226 Difference]: Without dead ends: 1703 [2020-10-29 05:08:22,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:08:22,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-29 05:08:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1690. [2020-10-29 05:08:22,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1690 states. [2020-10-29 05:08:22,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2135 transitions. [2020-10-29 05:08:22,418 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2135 transitions. Word has length 814 [2020-10-29 05:08:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:08:22,418 INFO L481 AbstractCegarLoop]: Abstraction has 1690 states and 2135 transitions. [2020-10-29 05:08:22,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:08:22,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2135 transitions. [2020-10-29 05:08:22,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2020-10-29 05:08:22,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:08:22,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:08:22,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:08:22,430 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:08:22,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:08:22,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1754949883, now seen corresponding path program 1 times [2020-10-29 05:08:22,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:08:22,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45789101] [2020-10-29 05:08:22,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:08:22,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:22,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:22,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:27,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:27,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 855 [2020-10-29 05:08:27,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:08:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 05:08:27,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:27,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:08:27,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 05:08:27,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 516 [2020-10-29 05:08:27,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:29,554 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2020-10-29 05:08:29,751 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 40 [2020-10-29 05:08:29,981 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 42 [2020-10-29 05:08:30,211 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 40 [2020-10-29 05:08:30,359 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 33 [2020-10-29 05:08:30,642 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-10-29 05:08:30,831 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 38 [2020-10-29 05:08:30,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:08:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:30,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:30,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:30,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:08:30,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:30,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:08:30,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:30,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:30,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:08:30,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:30,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:08:30,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:30,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:08:31,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:31,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:31,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:31,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 05:08:31,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:31,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 05:08:31,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:31,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:31,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:08:31,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:31,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 05:08:31,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:35,670 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:08:35,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45789101] [2020-10-29 05:08:35,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:08:35,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:08:35,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655449353] [2020-10-29 05:08:35,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:08:35,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:08:35,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:08:35,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:08:35,674 INFO L87 Difference]: Start difference. First operand 1690 states and 2135 transitions. Second operand 17 states. [2020-10-29 05:08:36,039 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-29 05:08:36,223 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 05:08:37,444 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-29 05:08:39,538 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-29 05:08:39,736 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-29 05:08:41,140 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 125 [2020-10-29 05:08:41,585 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 124 [2020-10-29 05:08:42,756 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 123 [2020-10-29 05:08:44,233 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-29 05:08:44,435 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2020-10-29 05:08:45,179 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 122 [2020-10-29 05:08:47,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:08:47,111 INFO L93 Difference]: Finished difference Result 3896 states and 4973 transitions. [2020-10-29 05:08:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:08:47,113 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 837 [2020-10-29 05:08:47,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:08:47,124 INFO L225 Difference]: With dead ends: 3896 [2020-10-29 05:08:47,125 INFO L226 Difference]: Without dead ends: 2013 [2020-10-29 05:08:47,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:08:47,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-10-29 05:08:47,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 2009. [2020-10-29 05:08:47,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2009 states. [2020-10-29 05:08:47,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2009 states to 2009 states and 2460 transitions. [2020-10-29 05:08:47,193 INFO L78 Accepts]: Start accepts. Automaton has 2009 states and 2460 transitions. Word has length 837 [2020-10-29 05:08:47,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:08:47,194 INFO L481 AbstractCegarLoop]: Abstraction has 2009 states and 2460 transitions. [2020-10-29 05:08:47,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:08:47,195 INFO L276 IsEmpty]: Start isEmpty. Operand 2009 states and 2460 transitions. [2020-10-29 05:08:47,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 869 [2020-10-29 05:08:47,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:08:47,207 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:08:47,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:08:47,207 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:08:47,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:08:47,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1573793794, now seen corresponding path program 1 times [2020-10-29 05:08:47,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:08:47,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1879931128] [2020-10-29 05:08:47,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:08:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:47,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:48,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:51,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:52,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:52,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 886 [2020-10-29 05:08:52,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:08:52,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5196 [2020-10-29 05:08:52,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:52,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:52,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:08:52,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-29 05:08:52,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 810 [2020-10-29 05:08:52,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:08:52,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:08:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:53,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:53,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:53,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:08:53,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:53,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 05:08:53,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:53,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:53,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:08:53,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:53,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:08:53,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:08:53,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:08:53,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:08:53,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:08:53,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:08:53,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 05:08:53,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:08:53,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-29 05:08:53,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:08:53,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:08:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:08:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:08:53,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 05:08:53,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:08:53,882 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:08:53,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1879931128] [2020-10-29 05:08:53,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:08:53,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:08:53,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811078428] [2020-10-29 05:08:53,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:08:53,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:08:53,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:08:53,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:08:53,885 INFO L87 Difference]: Start difference. First operand 2009 states and 2460 transitions. Second operand 5 states. [2020-10-29 05:09:01,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:09:01,082 INFO L93 Difference]: Finished difference Result 5706 states and 7116 transitions. [2020-10-29 05:09:01,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:09:01,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 868 [2020-10-29 05:09:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:09:01,104 INFO L225 Difference]: With dead ends: 5706 [2020-10-29 05:09:01,104 INFO L226 Difference]: Without dead ends: 3703 [2020-10-29 05:09:01,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:09:01,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2020-10-29 05:09:01,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3699. [2020-10-29 05:09:01,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3699 states. [2020-10-29 05:09:01,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3699 states to 3699 states and 4317 transitions. [2020-10-29 05:09:01,218 INFO L78 Accepts]: Start accepts. Automaton has 3699 states and 4317 transitions. Word has length 868 [2020-10-29 05:09:01,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:09:01,221 INFO L481 AbstractCegarLoop]: Abstraction has 3699 states and 4317 transitions. [2020-10-29 05:09:01,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:09:01,221 INFO L276 IsEmpty]: Start isEmpty. Operand 3699 states and 4317 transitions. [2020-10-29 05:09:01,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2020-10-29 05:09:01,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:09:01,239 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:09:01,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:09:01,239 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:09:01,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:09:01,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1179098850, now seen corresponding path program 1 times [2020-10-29 05:09:01,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:09:01,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1150250596] [2020-10-29 05:09:01,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:09:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:01,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:02,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:04,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:06,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:06,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 902 [2020-10-29 05:09:06,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:09:06,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-29 05:09:06,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:06,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:06,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 05:09:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-29 05:09:06,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 810 [2020-10-29 05:09:06,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:09:06,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:09:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:06,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:06,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:06,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:09:06,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:06,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 05:09:06,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:06,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:09:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:06,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:09:06,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:06,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:09:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:07,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:07,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:09:07,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:07,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-29 05:09:07,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:07,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:07,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:09:07,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:07,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 05:09:07,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:07,850 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 74 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:09:07,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1150250596] [2020-10-29 05:09:07,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:09:07,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:09:07,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024939663] [2020-10-29 05:09:07,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:09:07,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:09:07,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:09:07,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:09:07,853 INFO L87 Difference]: Start difference. First operand 3699 states and 4317 transitions. Second operand 5 states. [2020-10-29 05:09:14,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:09:14,220 INFO L93 Difference]: Finished difference Result 10782 states and 12837 transitions. [2020-10-29 05:09:14,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:09:14,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 884 [2020-10-29 05:09:14,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:09:14,254 INFO L225 Difference]: With dead ends: 10782 [2020-10-29 05:09:14,254 INFO L226 Difference]: Without dead ends: 7089 [2020-10-29 05:09:14,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:09:14,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7089 states. [2020-10-29 05:09:14,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7089 to 7081. [2020-10-29 05:09:14,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7081 states. [2020-10-29 05:09:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7081 states to 7081 states and 8296 transitions. [2020-10-29 05:09:14,440 INFO L78 Accepts]: Start accepts. Automaton has 7081 states and 8296 transitions. Word has length 884 [2020-10-29 05:09:14,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:09:14,440 INFO L481 AbstractCegarLoop]: Abstraction has 7081 states and 8296 transitions. [2020-10-29 05:09:14,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:09:14,441 INFO L276 IsEmpty]: Start isEmpty. Operand 7081 states and 8296 transitions. [2020-10-29 05:09:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 932 [2020-10-29 05:09:14,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:09:14,467 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:09:14,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:09:14,467 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:09:14,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:09:14,468 INFO L82 PathProgramCache]: Analyzing trace with hash -679880791, now seen corresponding path program 1 times [2020-10-29 05:09:14,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:09:14,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2064605185] [2020-10-29 05:09:14,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:09:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:14,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:14,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:19,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:19,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 949 [2020-10-29 05:09:19,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:09:19,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 05:09:19,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:19,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 05:09:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-29 05:09:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 713 [2020-10-29 05:09:19,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:21,560 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2020-10-29 05:09:21,700 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2020-10-29 05:09:21,997 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-10-29 05:09:22,178 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 30 [2020-10-29 05:09:22,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:09:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:22,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:22,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:22,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:09:22,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:22,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 05:09:22,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:22,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:22,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:09:22,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:22,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:09:22,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:22,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:09:22,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:22,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:22,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:22,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 05:09:22,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:09:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 05:09:22,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:22,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:09:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:09:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 05:09:22,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:09:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 121 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:09:28,713 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2064605185] [2020-10-29 05:09:28,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:09:28,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 05:09:28,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477028645] [2020-10-29 05:09:28,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 05:09:28,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:09:28,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 05:09:28,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-10-29 05:09:28,716 INFO L87 Difference]: Start difference. First operand 7081 states and 8296 transitions. Second operand 19 states. [2020-10-29 05:09:31,002 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 120 [2020-10-29 05:09:31,421 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 130 [2020-10-29 05:09:35,200 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 129 [2020-10-29 05:09:37,595 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 128 [2020-10-29 05:09:38,426 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 116 [2020-10-29 05:09:38,829 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 124 [2020-10-29 05:09:42,344 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 123 [2020-10-29 05:09:44,159 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 122 [2020-10-29 05:09:46,297 WARN L193 SmtUtils]: Spent 379.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 113 [2020-10-29 05:09:46,717 WARN L193 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 117 [2020-10-29 05:09:47,521 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 115 [2020-10-29 05:09:53,072 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 108 [2020-10-29 05:09:53,391 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 110 [2020-10-29 05:09:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:09:54,226 INFO L93 Difference]: Finished difference Result 14864 states and 17588 transitions. [2020-10-29 05:09:54,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 05:09:54,227 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 931 [2020-10-29 05:09:54,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:09:54,261 INFO L225 Difference]: With dead ends: 14864 [2020-10-29 05:09:54,261 INFO L226 Difference]: Without dead ends: 7789 [2020-10-29 05:09:54,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 05:09:54,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7789 states. [2020-10-29 05:09:54,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7789 to 7785. [2020-10-29 05:09:54,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7785 states. [2020-10-29 05:09:54,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7785 states to 7785 states and 9007 transitions. [2020-10-29 05:09:54,458 INFO L78 Accepts]: Start accepts. Automaton has 7785 states and 9007 transitions. Word has length 931 [2020-10-29 05:09:54,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:09:54,459 INFO L481 AbstractCegarLoop]: Abstraction has 7785 states and 9007 transitions. [2020-10-29 05:09:54,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 05:09:54,460 INFO L276 IsEmpty]: Start isEmpty. Operand 7785 states and 9007 transitions. [2020-10-29 05:09:54,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-29 05:09:54,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:09:54,489 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:09:54,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:09:54,490 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:09:54,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:09:54,491 INFO L82 PathProgramCache]: Analyzing trace with hash -313997371, now seen corresponding path program 1 times [2020-10-29 05:09:54,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:09:54,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964214151] [2020-10-29 05:09:54,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:09:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:09:54,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:54,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:09:59,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:09:59,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1015 [2020-10-29 05:09:59,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:09:59,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 05:09:59,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:09:59,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:09:59,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:09:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-29 05:09:59,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 657 [2020-10-29 05:09:59,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:01,638 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 42 [2020-10-29 05:10:02,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:10:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:02,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:02,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:10:02,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:02,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 05:10:02,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:02,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:02,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:02,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:10:02,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:02,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:02,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:02,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-29 05:10:02,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:02,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 05:10:02,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:02,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:02,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:10:02,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:02,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-29 05:10:02,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:08,896 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 187 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:10:08,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964214151] [2020-10-29 05:10:08,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:10:08,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:10:08,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741917142] [2020-10-29 05:10:08,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:10:08,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:10:08,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:10:08,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:10:08,900 INFO L87 Difference]: Start difference. First operand 7785 states and 9007 transitions. Second operand 17 states. [2020-10-29 05:10:10,454 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-29 05:10:10,665 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 05:10:13,636 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-29 05:10:15,140 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-29 05:10:15,341 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-29 05:10:19,470 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 05:10:20,147 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-29 05:10:20,382 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-10-29 05:10:21,704 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 134 [2020-10-29 05:10:23,620 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 131 [2020-10-29 05:10:25,151 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 126 [2020-10-29 05:10:25,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:10:25,330 INFO L93 Difference]: Finished difference Result 16218 states and 18928 transitions. [2020-10-29 05:10:25,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:10:25,331 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 997 [2020-10-29 05:10:25,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:10:25,364 INFO L225 Difference]: With dead ends: 16218 [2020-10-29 05:10:25,364 INFO L226 Difference]: Without dead ends: 8439 [2020-10-29 05:10:25,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=144, Invalid=612, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:10:25,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8439 states. [2020-10-29 05:10:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8439 to 8435. [2020-10-29 05:10:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8435 states. [2020-10-29 05:10:25,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8435 states to 8435 states and 9663 transitions. [2020-10-29 05:10:25,558 INFO L78 Accepts]: Start accepts. Automaton has 8435 states and 9663 transitions. Word has length 997 [2020-10-29 05:10:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:10:25,559 INFO L481 AbstractCegarLoop]: Abstraction has 8435 states and 9663 transitions. [2020-10-29 05:10:25,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:10:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 8435 states and 9663 transitions. [2020-10-29 05:10:25,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1016 [2020-10-29 05:10:25,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:10:25,590 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:10:25,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 05:10:25,590 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:10:25,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:10:25,591 INFO L82 PathProgramCache]: Analyzing trace with hash -1654386779, now seen corresponding path program 1 times [2020-10-29 05:10:25,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:10:25,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093132471] [2020-10-29 05:10:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:10:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:25,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:25,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:25,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:26,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:30,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:30,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1037 [2020-10-29 05:10:30,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 05:10:30,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-29 05:10:30,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:30,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 05:10:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 223 [2020-10-29 05:10:30,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 547 [2020-10-29 05:10:30,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:33,267 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 51 [2020-10-29 05:10:33,489 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 51 [2020-10-29 05:10:33,898 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 55 [2020-10-29 05:10:34,076 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 44 [2020-10-29 05:10:34,242 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 45 [2020-10-29 05:10:34,437 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 46 [2020-10-29 05:10:34,675 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 47 [2020-10-29 05:10:34,906 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 43 [2020-10-29 05:10:35,102 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 41 [2020-10-29 05:10:35,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:10:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:35,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:35,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:35,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:10:35,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:35,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 05:10:35,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:35,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:35,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:35,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:35,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:35,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:10:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:35,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:35,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:35,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:10:35,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:35,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 05:10:35,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:35,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:35,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:35,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:35,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:35,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:35,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-29 05:10:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:35,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:35,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:35,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 05:10:35,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:35,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 05:10:35,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:35,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:35,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:10:35,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:35,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:10:35,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:35,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 05:10:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:10:35,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:10:35,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:10:35,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 05:10:35,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:10:35,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 05:10:35,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:10:35,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:10:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:10:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:10:35,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 05:10:35,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:10:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 203 proven. 3 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 05:10:44,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093132471] [2020-10-29 05:10:44,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:10:44,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 05:10:44,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310680722] [2020-10-29 05:10:44,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 05:10:44,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:10:44,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 05:10:44,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-10-29 05:10:44,752 INFO L87 Difference]: Start difference. First operand 8435 states and 9663 transitions. Second operand 17 states. [2020-10-29 05:10:47,257 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-29 05:10:47,546 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 05:10:53,270 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 133 [2020-10-29 05:10:53,558 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-29 05:10:55,814 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 154 DAG size of output: 149 [2020-10-29 05:10:56,486 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-29 05:11:00,266 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-29 05:11:00,545 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-29 05:11:01,571 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 135 [2020-10-29 05:11:03,448 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 132 [2020-10-29 05:11:03,931 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 127 [2020-10-29 05:11:04,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:11:04,932 INFO L93 Difference]: Finished difference Result 17408 states and 20096 transitions. [2020-10-29 05:11:04,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 05:11:04,934 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 1015 [2020-10-29 05:11:04,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:11:04,960 INFO L225 Difference]: With dead ends: 17408 [2020-10-29 05:11:04,960 INFO L226 Difference]: Without dead ends: 8979 [2020-10-29 05:11:04,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=145, Invalid=611, Unknown=0, NotChecked=0, Total=756 [2020-10-29 05:11:04,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8979 states. [2020-10-29 05:11:05,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8979 to 8975. [2020-10-29 05:11:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8975 states. [2020-10-29 05:11:05,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8975 states to 8975 states and 10207 transitions. [2020-10-29 05:11:05,185 INFO L78 Accepts]: Start accepts. Automaton has 8975 states and 10207 transitions. Word has length 1015 [2020-10-29 05:11:05,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:11:05,186 INFO L481 AbstractCegarLoop]: Abstraction has 8975 states and 10207 transitions. [2020-10-29 05:11:05,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 05:11:05,186 INFO L276 IsEmpty]: Start isEmpty. Operand 8975 states and 10207 transitions. [2020-10-29 05:11:05,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1014 [2020-10-29 05:11:05,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:11:05,217 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 05:11:05,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 05:11:05,218 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:11:05,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:11:05,218 INFO L82 PathProgramCache]: Analyzing trace with hash -2085401435, now seen corresponding path program 1 times [2020-10-29 05:11:05,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:11:05,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243947761] [2020-10-29 05:11:05,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:11:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:11:05,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:11:05,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking...