/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=SHALLOWEST --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/Problem05_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:13:07,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:13:07,705 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:13:07,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:13:07,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:13:07,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:13:07,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:13:07,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:13:07,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:13:07,785 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:13:07,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:13:07,788 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:13:07,789 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:13:07,793 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:13:07,796 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:13:07,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:13:07,801 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:13:07,804 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:13:07,812 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:13:07,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:13:07,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:13:07,824 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:13:07,826 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:13:07,828 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:13:07,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:13:07,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:13:07,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:13:07,840 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:13:07,841 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:13:07,842 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:13:07,842 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:13:07,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:13:07,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:13:07,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:13:07,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:13:07,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:13:07,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:13:07,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:13:07,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:13:07,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:13:07,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:13:07,871 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 [2020-10-26 21:13:07,926 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:13:07,927 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:13:07,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:13:07,931 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:13:07,932 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:13:07,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:13:07,932 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:13:07,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:13:07,932 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:13:07,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:13:07,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:13:07,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:13:07,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:13:07,934 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:13:07,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:13:07,935 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:13:07,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:13:07,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:13:07,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:13:07,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:13:07,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:13:07,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:13:07,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:13:07,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:13:07,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:13:07,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:13:07,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:13:07,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:13:07,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:13:07,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:13:08,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:13:08,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:13:08,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:13:08,472 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:13:08,473 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:13:08,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label09.c [2020-10-26 21:13:08,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c040132a2/36b75e5d500c42cebfb86b1406478f44/FLAG22af3feda [2020-10-26 21:13:09,909 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:13:09,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label09.c [2020-10-26 21:13:09,952 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c040132a2/36b75e5d500c42cebfb86b1406478f44/FLAG22af3feda [2020-10-26 21:13:10,186 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c040132a2/36b75e5d500c42cebfb86b1406478f44 [2020-10-26 21:13:10,190 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:13:10,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:13:10,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:13:10,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:13:10,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:13:10,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:13:10" (1/1) ... [2020-10-26 21:13:10,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@396e584c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:10, skipping insertion in model container [2020-10-26 21:13:10,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:13:10" (1/1) ... [2020-10-26 21:13:10,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:13:10,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:13:12,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:13:12,900 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:13:14,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:13:14,283 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:13:14,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:14 WrapperNode [2020-10-26 21:13:14,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:13:14,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:13:14,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:13:14,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:13:14,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:14" (1/1) ... [2020-10-26 21:13:14,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:14" (1/1) ... [2020-10-26 21:13:14,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:14" (1/1) ... [2020-10-26 21:13:14,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:14" (1/1) ... [2020-10-26 21:13:14,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:14" (1/1) ... [2020-10-26 21:13:14,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:14" (1/1) ... [2020-10-26 21:13:14,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:14" (1/1) ... [2020-10-26 21:13:14,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:13:15,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:13:15,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:13:15,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:13:15,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:14" (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 [2020-10-26 21:13:15,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:13:15,090 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:13:15,090 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:13:15,090 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:13:15,091 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:13:15,091 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:13:15,091 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:13:15,091 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-26 21:13:15,091 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-26 21:13:15,091 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-26 21:13:15,092 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-26 21:13:15,092 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:13:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:13:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:13:15,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:13:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:13:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-26 21:13:15,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-26 21:13:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-26 21:13:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-26 21:13:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:13:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:13:15,095 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:13:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:13:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:13:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:13:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:13:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:13:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:13:15,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:13:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:13:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:13:15,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:13:25,388 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:13:25,389 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:13:25,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:13:25 BoogieIcfgContainer [2020-10-26 21:13:25,395 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:13:25,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:13:25,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:13:25,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:13:25,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:13:10" (1/3) ... [2020-10-26 21:13:25,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4605a191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:13:25, skipping insertion in model container [2020-10-26 21:13:25,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:14" (2/3) ... [2020-10-26 21:13:25,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4605a191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:13:25, skipping insertion in model container [2020-10-26 21:13:25,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:13:25" (3/3) ... [2020-10-26 21:13:25,407 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label09.c [2020-10-26 21:13:25,419 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:13:25,426 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:13:25,440 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:13:25,490 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:13:25,490 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:13:25,490 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:13:25,490 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:13:25,490 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:13:25,490 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:13:25,491 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:13:25,491 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:13:25,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-26 21:13:25,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1694 [2020-10-26 21:13:25,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:13:25,725 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:13:25,726 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:13:25,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:13:25,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1346756393, now seen corresponding path program 1 times [2020-10-26 21:13:25,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:13:25,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267407998] [2020-10-26 21:13:25,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:13:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:13:27,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:13:32,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:13:32,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1717 [2020-10-26 21:13:32,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:13:32,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5056 [2020-10-26 21:13:32,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:13:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 21:13:32,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:13:32,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1708 [2020-10-26 21:13:32,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:13:34,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:13:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:13:34,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:13:34,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:13:34,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:13:34,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:13:34,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 21:13:34,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:13:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:13:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:13:34,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:13:34,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:13:37,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:13:37,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267407998] [2020-10-26 21:13:37,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:13:37,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:13:37,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129202662] [2020-10-26 21:13:37,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:13:37,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:13:37,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:13:37,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:13:37,213 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-26 21:13:58,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:13:58,030 INFO L93 Difference]: Finished difference Result 6316 states and 11857 transitions. [2020-10-26 21:13:58,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:13:58,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1693 [2020-10-26 21:13:58,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:13:58,085 INFO L225 Difference]: With dead ends: 6316 [2020-10-26 21:13:58,086 INFO L226 Difference]: Without dead ends: 4026 [2020-10-26 21:13:58,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:13:58,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2020-10-26 21:13:58,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3997. [2020-10-26 21:13:58,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3997 states. [2020-10-26 21:13:58,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 6428 transitions. [2020-10-26 21:13:58,337 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 6428 transitions. Word has length 1693 [2020-10-26 21:13:58,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:13:58,342 INFO L481 AbstractCegarLoop]: Abstraction has 3997 states and 6428 transitions. [2020-10-26 21:13:58,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:13:58,343 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 6428 transitions. [2020-10-26 21:13:58,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1703 [2020-10-26 21:13:58,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:13:58,490 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:13:58,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:13:58,490 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:13:58,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:13:58,492 INFO L82 PathProgramCache]: Analyzing trace with hash -564118867, now seen corresponding path program 1 times [2020-10-26 21:13:58,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:13:58,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759667992] [2020-10-26 21:13:58,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:13:58,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:13:58,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:03,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:14:03,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1728 [2020-10-26 21:14:03,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:14:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5112 [2020-10-26 21:14:03,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:14:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:14:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:14:03,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 21:14:03,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:14:05,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:14:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:14:05,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:05,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:14:05,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:14:05,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:14:05,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:14:05,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:14:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:14:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:14:05,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:14:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:14:05,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:14:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:14:05,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:05,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:14:05,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:14:05,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:14:05,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 21:14:05,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:14:05,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:14:05,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:14:05,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 21:14:05,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:14:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:14:06,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759667992] [2020-10-26 21:14:06,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:14:06,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 21:14:06,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778442071] [2020-10-26 21:14:06,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:14:06,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:14:06,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:14:06,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:14:06,856 INFO L87 Difference]: Start difference. First operand 3997 states and 6428 transitions. Second operand 8 states. [2020-10-26 21:14:44,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:14:44,747 INFO L93 Difference]: Finished difference Result 15471 states and 25396 transitions. [2020-10-26 21:14:44,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 21:14:44,748 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1702 [2020-10-26 21:14:44,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:14:44,826 INFO L225 Difference]: With dead ends: 15471 [2020-10-26 21:14:44,828 INFO L226 Difference]: Without dead ends: 11480 [2020-10-26 21:14:44,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 21:14:44,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11480 states. [2020-10-26 21:14:45,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11480 to 11283. [2020-10-26 21:14:45,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11283 states. [2020-10-26 21:14:45,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11283 states to 11283 states and 17404 transitions. [2020-10-26 21:14:45,289 INFO L78 Accepts]: Start accepts. Automaton has 11283 states and 17404 transitions. Word has length 1702 [2020-10-26 21:14:45,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:14:45,289 INFO L481 AbstractCegarLoop]: Abstraction has 11283 states and 17404 transitions. [2020-10-26 21:14:45,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:14:45,290 INFO L276 IsEmpty]: Start isEmpty. Operand 11283 states and 17404 transitions. [2020-10-26 21:14:45,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1705 [2020-10-26 21:14:45,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:14:45,347 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:14:45,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:14:45,348 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:14:45,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:14:45,349 INFO L82 PathProgramCache]: Analyzing trace with hash 177179953, now seen corresponding path program 1 times [2020-10-26 21:14:45,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:14:45,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511572602] [2020-10-26 21:14:45,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:14:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:14:45,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:46,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:50,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:14:50,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1730 [2020-10-26 21:14:50,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:14:50,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-26 21:14:50,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:14:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:14:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:14:50,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:14:50,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:14:51,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:14:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:14:51,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:51,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:14:51,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:14:51,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:14:51,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 21:14:51,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:14:51,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:14:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:14:51,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:14:51,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:14:51,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:14:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:14:51,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:51,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:14:51,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 21:14:51,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:14:51,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 21:14:51,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:14:51,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:14:51,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:14:51,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:14:51,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:14:52,858 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:14:52,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511572602] [2020-10-26 21:14:52,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:14:52,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:14:52,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586866149] [2020-10-26 21:14:52,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:14:52,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:14:52,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:14:52,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:14:52,863 INFO L87 Difference]: Start difference. First operand 11283 states and 17404 transitions. Second operand 7 states. [2020-10-26 21:15:21,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:15:21,668 INFO L93 Difference]: Finished difference Result 34335 states and 56411 transitions. [2020-10-26 21:15:21,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:15:21,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1704 [2020-10-26 21:15:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:15:21,782 INFO L225 Difference]: With dead ends: 34335 [2020-10-26 21:15:21,783 INFO L226 Difference]: Without dead ends: 23058 [2020-10-26 21:15:21,815 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:15:21,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23058 states. [2020-10-26 21:15:22,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23058 to 22676. [2020-10-26 21:15:22,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22676 states. [2020-10-26 21:15:22,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22676 states to 22676 states and 31455 transitions. [2020-10-26 21:15:22,541 INFO L78 Accepts]: Start accepts. Automaton has 22676 states and 31455 transitions. Word has length 1704 [2020-10-26 21:15:22,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:15:22,546 INFO L481 AbstractCegarLoop]: Abstraction has 22676 states and 31455 transitions. [2020-10-26 21:15:22,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:15:22,546 INFO L276 IsEmpty]: Start isEmpty. Operand 22676 states and 31455 transitions. [2020-10-26 21:15:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1716 [2020-10-26 21:15:22,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:15:22,646 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:15:22,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:15:22,647 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:15:22,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:15:22,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1474987960, now seen corresponding path program 1 times [2020-10-26 21:15:22,651 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:15:22,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145545022] [2020-10-26 21:15:22,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:15:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:15:23,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:15:24,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:15:24,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:15:28,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:15:28,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1741 [2020-10-26 21:15:28,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:15:28,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 21:15:28,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:15:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:15:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:15:28,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 21:15:28,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:15:28,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:15:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:15:28,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:15:28,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:15:28,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:15:28,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:15:28,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:15:28,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:15:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:15:28,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:15:28,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:15:28,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:15:28,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:15:28,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:15:28,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:15:28,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:15:28,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 21:15:28,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:15:28,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 21:15:28,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:15:28,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:15:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:15:28,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:15:28,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:15:30,158 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:15:30,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145545022] [2020-10-26 21:15:30,159 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:15:30,159 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:15:30,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681077811] [2020-10-26 21:15:30,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:15:30,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:15:30,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:15:30,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:15:30,171 INFO L87 Difference]: Start difference. First operand 22676 states and 31455 transitions. Second operand 7 states. [2020-10-26 21:15:55,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:15:55,191 INFO L93 Difference]: Finished difference Result 53242 states and 74823 transitions. [2020-10-26 21:15:55,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:15:55,192 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1715 [2020-10-26 21:15:55,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:15:55,296 INFO L225 Difference]: With dead ends: 53242 [2020-10-26 21:15:55,296 INFO L226 Difference]: Without dead ends: 30572 [2020-10-26 21:15:55,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:15:55,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30572 states. [2020-10-26 21:15:56,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30572 to 30304. [2020-10-26 21:15:56,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30304 states. [2020-10-26 21:15:56,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30304 states to 30304 states and 40827 transitions. [2020-10-26 21:15:56,134 INFO L78 Accepts]: Start accepts. Automaton has 30304 states and 40827 transitions. Word has length 1715 [2020-10-26 21:15:56,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:15:56,135 INFO L481 AbstractCegarLoop]: Abstraction has 30304 states and 40827 transitions. [2020-10-26 21:15:56,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:15:56,135 INFO L276 IsEmpty]: Start isEmpty. Operand 30304 states and 40827 transitions. [2020-10-26 21:15:56,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1829 [2020-10-26 21:15:56,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:15:56,250 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:15:56,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:15:56,251 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:15:56,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:15:56,252 INFO L82 PathProgramCache]: Analyzing trace with hash 895488706, now seen corresponding path program 1 times [2020-10-26 21:15:56,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:15:56,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359972148] [2020-10-26 21:15:56,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:15:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:15:57,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:15:57,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:15:58,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:01,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:01,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1856 [2020-10-26 21:16:01,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:16:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-26 21:16:01,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:16:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 123 [2020-10-26 21:16:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-26 21:16:01,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:02,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:16:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:02,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:02,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:02,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:16:02,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:16:02,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 21:16:02,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:16:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:16:02,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:16:02,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:02,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:16:02,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:02,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:02,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:02,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 21:16:02,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:16:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-26 21:16:02,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:16:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:16:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 21:16:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:02,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-26 21:16:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:02,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:02,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:02,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 21:16:02,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:16:02,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 21:16:02,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:16:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:16:02,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:16:02,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:04,184 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 148 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 21:16:04,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359972148] [2020-10-26 21:16:04,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:16:04,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:16:04,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582349532] [2020-10-26 21:16:04,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:16:04,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:16:04,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:16:04,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:16:04,188 INFO L87 Difference]: Start difference. First operand 30304 states and 40827 transitions. Second operand 7 states. [2020-10-26 21:16:34,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:16:34,416 INFO L93 Difference]: Finished difference Result 67661 states and 95535 transitions. [2020-10-26 21:16:34,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:16:34,417 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1828 [2020-10-26 21:16:34,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:16:34,568 INFO L225 Difference]: With dead ends: 67661 [2020-10-26 21:16:34,569 INFO L226 Difference]: Without dead ends: 39093 [2020-10-26 21:16:34,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:16:34,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39093 states. [2020-10-26 21:16:35,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39093 to 38607. [2020-10-26 21:16:35,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38607 states. [2020-10-26 21:16:35,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38607 states to 38607 states and 53049 transitions. [2020-10-26 21:16:35,644 INFO L78 Accepts]: Start accepts. Automaton has 38607 states and 53049 transitions. Word has length 1828 [2020-10-26 21:16:35,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:16:35,645 INFO L481 AbstractCegarLoop]: Abstraction has 38607 states and 53049 transitions. [2020-10-26 21:16:35,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:16:35,646 INFO L276 IsEmpty]: Start isEmpty. Operand 38607 states and 53049 transitions. [2020-10-26 21:16:35,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1857 [2020-10-26 21:16:35,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:16:35,853 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:16:35,853 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:16:35,853 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:16:35,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:16:35,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1082446772, now seen corresponding path program 1 times [2020-10-26 21:16:35,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:16:35,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044306196] [2020-10-26 21:16:35,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:16:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:36,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:37,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:41,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:41,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1886 [2020-10-26 21:16:41,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:16:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 21:16:41,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 21:16:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:16:41,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-26 21:16:41,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:41,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:16:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:41,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:41,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:41,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:16:41,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:16:41,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:16:41,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:16:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:16:41,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:16:41,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:41,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:16:41,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:41,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:41,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:41,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 21:16:41,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:16:41,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-26 21:16:41,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:16:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:16:41,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 21:16:41,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:41,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-26 21:16:41,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:41,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:41,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:42,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:42,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-26 21:16:42,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:16:42,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-26 21:16:42,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:16:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:16:42,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-26 21:16:42,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:42,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-26 21:16:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:42,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:42,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:42,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-26 21:16:42,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:16:42,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:16:42,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:16:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:16:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-26 21:16:42,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0