/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem16_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:14:57,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:14:57,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:14:57,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:14:57,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:14:57,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:14:57,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:14:57,097 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:14:57,099 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:14:57,100 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:14:57,102 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:14:57,103 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:14:57,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:14:57,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:14:57,106 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:14:57,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:14:57,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:14:57,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:14:57,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:14:57,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:14:57,137 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:14:57,143 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:14:57,146 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:14:57,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:14:57,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:14:57,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:14:57,160 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:14:57,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:14:57,165 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:14:57,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:14:57,167 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:14:57,168 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:14:57,169 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:14:57,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:14:57,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:14:57,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:14:57,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:14:57,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:14:57,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:14:57,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:14:57,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:14:57,177 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 [2020-10-28 13:14:57,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:14:57,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:14:57,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:14:57,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:14:57,240 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:14:57,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:14:57,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:14:57,241 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:14:57,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:14:57,242 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:14:57,243 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:14:57,243 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:14:57,243 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:14:57,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:14:57,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:14:57,244 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:14:57,244 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:14:57,246 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:14:57,246 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:14:57,246 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:14:57,246 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:14:57,247 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:14:57,247 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:14:57,247 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:14:57,247 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:14:57,247 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:14:57,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:14:57,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:14:57,249 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:14:57,249 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:14:57,707 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:14:57,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:14:57,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:14:57,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:14:57,745 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:14:57,749 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label02.c [2020-10-28 13:14:57,841 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89665c1f6/932fd351ec3f4469b667a5858cff0b98/FLAG81760dc84 [2020-10-28 13:14:58,837 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:14:58,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label02.c [2020-10-28 13:14:58,865 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89665c1f6/932fd351ec3f4469b667a5858cff0b98/FLAG81760dc84 [2020-10-28 13:14:58,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/89665c1f6/932fd351ec3f4469b667a5858cff0b98 [2020-10-28 13:14:58,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:14:58,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:14:58,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:14:58,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:14:58,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:14:58,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:14:58" (1/1) ... [2020-10-28 13:14:58,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e349ea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:14:58, skipping insertion in model container [2020-10-28 13:14:58,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:14:58" (1/1) ... [2020-10-28 13:14:58,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:14:59,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:14:59,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:14:59,912 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:15:00,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:15:00,259 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:15:00,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:00 WrapperNode [2020-10-28 13:15:00,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:15:00,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:15:00,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:15:00,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:15:00,276 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:00" (1/1) ... [2020-10-28 13:15:00,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:00" (1/1) ... [2020-10-28 13:15:00,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:00" (1/1) ... [2020-10-28 13:15:00,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:00" (1/1) ... [2020-10-28 13:15:00,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:00" (1/1) ... [2020-10-28 13:15:00,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:00" (1/1) ... [2020-10-28 13:15:00,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:00" (1/1) ... [2020-10-28 13:15:00,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:15:00,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:15:00,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:15:00,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:15:00,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:00" (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 [2020-10-28 13:15:00,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:15:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:15:00,609 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:15:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:15:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:15:00,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:15:00,610 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:15:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:15:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:15:00,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:15:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:15:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:15:00,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:15:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:15:00,613 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:15:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:15:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:15:00,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:15:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:15:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:15:00,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:15:03,742 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:15:03,742 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:15:03,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:15:03 BoogieIcfgContainer [2020-10-28 13:15:03,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:15:03,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:15:03,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:15:03,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:15:03,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:14:58" (1/3) ... [2020-10-28 13:15:03,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3762ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:15:03, skipping insertion in model container [2020-10-28 13:15:03,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:15:00" (2/3) ... [2020-10-28 13:15:03,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f3762ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:15:03, skipping insertion in model container [2020-10-28 13:15:03,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:15:03" (3/3) ... [2020-10-28 13:15:03,765 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label02.c [2020-10-28 13:15:03,784 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:15:03,793 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:15:03,811 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:15:03,849 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:15:03,849 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:15:03,850 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:15:03,850 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:15:03,850 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:15:03,850 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:15:03,850 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:15:03,850 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:15:03,883 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:15:03,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 13:15:03,895 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:03,896 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] [2020-10-28 13:15:03,897 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:03,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:03,905 INFO L82 PathProgramCache]: Analyzing trace with hash -1958562012, now seen corresponding path program 1 times [2020-10-28 13:15:03,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:03,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812631980] [2020-10-28 13:15:03,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:05,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:05,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 13:15:05,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:05,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-10-28 13:15:05,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:05,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:15:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:15:05,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-28 13:15:05,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:15:05,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:05,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:05,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:05,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:05,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:05,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:15:05,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:05,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:05,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:15:05,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:05,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:15:05,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812631980] [2020-10-28 13:15:05,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:15:05,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:15:05,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90513604] [2020-10-28 13:15:05,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:15:05,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:05,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:15:05,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:15:05,448 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-28 13:15:14,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:14,094 INFO L93 Difference]: Finished difference Result 1520 states and 2853 transitions. [2020-10-28 13:15:14,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:15:14,097 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-28 13:15:14,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:14,146 INFO L225 Difference]: With dead ends: 1520 [2020-10-28 13:15:14,146 INFO L226 Difference]: Without dead ends: 1039 [2020-10-28 13:15:14,164 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:14,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-28 13:15:14,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-28 13:15:14,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-28 13:15:14,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1630 transitions. [2020-10-28 13:15:14,355 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1630 transitions. Word has length 68 [2020-10-28 13:15:14,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:14,357 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1630 transitions. [2020-10-28 13:15:14,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:15:14,357 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1630 transitions. [2020-10-28 13:15:14,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-28 13:15:14,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:14,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:14,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:15:14,369 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:14,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:14,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1274026, now seen corresponding path program 1 times [2020-10-28 13:15:14,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:14,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965985380] [2020-10-28 13:15:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:14,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:14,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:14,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:15,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:15,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:15,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 13:15:15,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:15:15,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1379 [2020-10-28 13:15:15,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:15,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:15:15,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:15:15,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:15:15,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:15,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:15,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:15,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:15,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:15,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:15,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:15:15,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:15,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:15,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:15:15,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:16,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:16,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:16,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:16,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:15:16,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:16,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:15:16,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:16,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:15:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:16,276 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:15:16,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965985380] [2020-10-28 13:15:16,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:15:16,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:15:16,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792572584] [2020-10-28 13:15:16,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:16,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:16,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:16,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:16,283 INFO L87 Difference]: Start difference. First operand 1032 states and 1630 transitions. Second operand 7 states. [2020-10-28 13:15:21,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:21,511 INFO L93 Difference]: Finished difference Result 2430 states and 3781 transitions. [2020-10-28 13:15:21,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:15:21,513 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-10-28 13:15:21,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:21,523 INFO L225 Difference]: With dead ends: 2430 [2020-10-28 13:15:21,524 INFO L226 Difference]: Without dead ends: 1404 [2020-10-28 13:15:21,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:15:21,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1404 states. [2020-10-28 13:15:21,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1404 to 1384. [2020-10-28 13:15:21,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1384 states. [2020-10-28 13:15:21,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2052 transitions. [2020-10-28 13:15:21,591 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2052 transitions. Word has length 143 [2020-10-28 13:15:21,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:21,591 INFO L481 AbstractCegarLoop]: Abstraction has 1384 states and 2052 transitions. [2020-10-28 13:15:21,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:21,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2052 transitions. [2020-10-28 13:15:21,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-28 13:15:21,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:21,595 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:21,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:15:21,595 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:21,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:21,596 INFO L82 PathProgramCache]: Analyzing trace with hash 73836964, now seen corresponding path program 1 times [2020-10-28 13:15:21,596 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:21,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091919754] [2020-10-28 13:15:21,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:21,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:21,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:22,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:22,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:22,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 13:15:22,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:15:22,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-10-28 13:15:22,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:22,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:22,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:15:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:15:22,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:15:22,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:22,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:22,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:22,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:22,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:22,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:22,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:15:22,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:22,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:22,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:22,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:22,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:15:22,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:22,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:22,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:22,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:23,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:23,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:15:23,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 13:15:23,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:23,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:15:23,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:23,097 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:15:23,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091919754] [2020-10-28 13:15:23,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:15:23,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:15:23,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486701153] [2020-10-28 13:15:23,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:23,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:23,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:23,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:23,104 INFO L87 Difference]: Start difference. First operand 1384 states and 2052 transitions. Second operand 7 states. [2020-10-28 13:15:29,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:29,232 INFO L93 Difference]: Finished difference Result 4208 states and 6388 transitions. [2020-10-28 13:15:29,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:15:29,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 144 [2020-10-28 13:15:29,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:29,262 INFO L225 Difference]: With dead ends: 4208 [2020-10-28 13:15:29,262 INFO L226 Difference]: Without dead ends: 2830 [2020-10-28 13:15:29,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:15:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2830 states. [2020-10-28 13:15:29,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2830 to 2792. [2020-10-28 13:15:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2792 states. [2020-10-28 13:15:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2792 states to 2792 states and 3740 transitions. [2020-10-28 13:15:29,390 INFO L78 Accepts]: Start accepts. Automaton has 2792 states and 3740 transitions. Word has length 144 [2020-10-28 13:15:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:29,390 INFO L481 AbstractCegarLoop]: Abstraction has 2792 states and 3740 transitions. [2020-10-28 13:15:29,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:29,395 INFO L276 IsEmpty]: Start isEmpty. Operand 2792 states and 3740 transitions. [2020-10-28 13:15:29,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 13:15:29,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:29,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:29,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:15:29,401 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:29,402 INFO L82 PathProgramCache]: Analyzing trace with hash -142283126, now seen corresponding path program 1 times [2020-10-28 13:15:29,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:29,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083928695] [2020-10-28 13:15:29,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:29,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:29,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:29,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:29,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:29,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 13:15:29,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:15:29,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-28 13:15:29,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:29,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:29,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:15:29,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:15:29,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:29,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:29,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:29,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:29,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:29,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:29,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:15:29,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:29,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:29,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:29,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:29,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:30,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:30,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:15:30,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:30,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 13:15:30,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:30,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:30,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:30,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:15:30,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 13:15:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 59 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:15:30,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083928695] [2020-10-28 13:15:30,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:30,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:15:30,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253514998] [2020-10-28 13:15:30,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:15:30,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:30,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:15:30,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:15:30,215 INFO L87 Difference]: Start difference. First operand 2792 states and 3740 transitions. Second operand 5 states. [2020-10-28 13:15:36,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:36,363 INFO L93 Difference]: Finished difference Result 7667 states and 10636 transitions. [2020-10-28 13:15:36,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:15:36,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 159 [2020-10-28 13:15:36,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:36,427 INFO L225 Difference]: With dead ends: 7667 [2020-10-28 13:15:36,428 INFO L226 Difference]: Without dead ends: 4881 [2020-10-28 13:15:36,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:15:36,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4881 states. [2020-10-28 13:15:36,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4881 to 4872. [2020-10-28 13:15:36,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4872 states. [2020-10-28 13:15:36,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4872 states to 4872 states and 6347 transitions. [2020-10-28 13:15:36,571 INFO L78 Accepts]: Start accepts. Automaton has 4872 states and 6347 transitions. Word has length 159 [2020-10-28 13:15:36,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:36,571 INFO L481 AbstractCegarLoop]: Abstraction has 4872 states and 6347 transitions. [2020-10-28 13:15:36,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:15:36,572 INFO L276 IsEmpty]: Start isEmpty. Operand 4872 states and 6347 transitions. [2020-10-28 13:15:36,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-28 13:15:36,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:36,576 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:36,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:15:36,577 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:36,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:36,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1565351248, now seen corresponding path program 1 times [2020-10-28 13:15:36,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:36,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394904918] [2020-10-28 13:15:36,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:36,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:36,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:38,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:39,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:39,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-28 13:15:39,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:15:39,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2807 [2020-10-28 13:15:39,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:39,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:15:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:15:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-28 13:15:39,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:39,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:39,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:39,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:39,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:39,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:39,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:15:39,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:39,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:39,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:15:39,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:39,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:39,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:39,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:40,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:40,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 13:15:40,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:40,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-28 13:15:40,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:40,006 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:40,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 13:15:40,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:15:40,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394904918] [2020-10-28 13:15:40,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:15:40,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:15:40,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357128065] [2020-10-28 13:15:40,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:40,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:40,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:40,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:40,370 INFO L87 Difference]: Start difference. First operand 4872 states and 6347 transitions. Second operand 7 states. [2020-10-28 13:15:46,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:46,241 INFO L93 Difference]: Finished difference Result 10528 states and 13702 transitions. [2020-10-28 13:15:46,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:15:46,245 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-10-28 13:15:46,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:46,275 INFO L225 Difference]: With dead ends: 10528 [2020-10-28 13:15:46,275 INFO L226 Difference]: Without dead ends: 5662 [2020-10-28 13:15:46,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:15:46,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5662 states. [2020-10-28 13:15:46,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5662 to 5625. [2020-10-28 13:15:46,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5625 states. [2020-10-28 13:15:46,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5625 states to 5625 states and 7232 transitions. [2020-10-28 13:15:46,467 INFO L78 Accepts]: Start accepts. Automaton has 5625 states and 7232 transitions. Word has length 234 [2020-10-28 13:15:46,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:46,468 INFO L481 AbstractCegarLoop]: Abstraction has 5625 states and 7232 transitions. [2020-10-28 13:15:46,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5625 states and 7232 transitions. [2020-10-28 13:15:46,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-28 13:15:46,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:46,485 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:46,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:15:46,485 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:46,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:46,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1106123414, now seen corresponding path program 1 times [2020-10-28 13:15:46,486 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:46,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1970210668] [2020-10-28 13:15:46,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:46,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:46,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:46,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:47,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:50,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:51,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:51,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:51,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 395 [2020-10-28 13:15:51,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:15:51,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 13:15:51,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:51,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:51,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:15:51,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-28 13:15:51,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:15:51,858 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:15:51,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:15:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:51,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:51,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:51,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:15:51,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:51,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:15:51,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:51,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:51,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:51,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:51,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:51,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:51,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:15:51,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:51,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:52,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:52,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:15:52,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:52,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:15:52,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:52,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:15:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:15:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:15:52,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:52,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:15:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:52,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:52,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:52,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 13:15:52,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:52,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-28 13:15:52,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:52,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:52,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:15:52,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:15:52,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-28 13:15:52,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:52,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-10-28 13:15:52,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:52,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:15:52,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:15:52,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:15:52,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:15:52,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:15:52,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:15:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:15:52,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 13:15:52,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:15:52,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:15:52,898 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 272 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 13:15:52,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1970210668] [2020-10-28 13:15:52,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:15:52,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:15:52,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418114041] [2020-10-28 13:15:52,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:15:52,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:15:52,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:15:52,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:15:52,906 INFO L87 Difference]: Start difference. First operand 5625 states and 7232 transitions. Second operand 7 states. [2020-10-28 13:15:58,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:15:58,897 INFO L93 Difference]: Finished difference Result 13023 states and 17619 transitions. [2020-10-28 13:15:58,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:15:58,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 379 [2020-10-28 13:15:58,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:15:58,944 INFO L225 Difference]: With dead ends: 13023 [2020-10-28 13:15:58,944 INFO L226 Difference]: Without dead ends: 8080 [2020-10-28 13:15:58,962 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:15:58,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8080 states. [2020-10-28 13:15:59,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8080 to 6681. [2020-10-28 13:15:59,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6681 states. [2020-10-28 13:15:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6681 states to 6681 states and 8551 transitions. [2020-10-28 13:15:59,189 INFO L78 Accepts]: Start accepts. Automaton has 6681 states and 8551 transitions. Word has length 379 [2020-10-28 13:15:59,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:15:59,190 INFO L481 AbstractCegarLoop]: Abstraction has 6681 states and 8551 transitions. [2020-10-28 13:15:59,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:15:59,190 INFO L276 IsEmpty]: Start isEmpty. Operand 6681 states and 8551 transitions. [2020-10-28 13:15:59,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431 [2020-10-28 13:15:59,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:15:59,203 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:15:59,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:15:59,203 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:15:59,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:15:59,204 INFO L82 PathProgramCache]: Analyzing trace with hash 832612300, now seen corresponding path program 1 times [2020-10-28 13:15:59,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:15:59,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271138669] [2020-10-28 13:15:59,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:15:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:15:59,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:15:59,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:00,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:02,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:02,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-28 13:16:02,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:16:02,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2764 [2020-10-28 13:16:02,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:02,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:02,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:02,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:16:02,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 13:16:02,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:02,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:02,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:02,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:02,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:02,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:16:02,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:02,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:02,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:02,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:02,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:02,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:02,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:02,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:16:02,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:02,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 13:16:02,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:02,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:02,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:16:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:16:02,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:16:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:02,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:02,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:02,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 13:16:02,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:02,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 13:16:02,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:02,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:02,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:16:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:16:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 243 backedges. 240 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:16:03,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271138669] [2020-10-28 13:16:03,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:03,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:03,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157631519] [2020-10-28 13:16:03,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:03,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:03,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:03,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:03,595 INFO L87 Difference]: Start difference. First operand 6681 states and 8551 transitions. Second operand 7 states. [2020-10-28 13:16:10,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:10,604 INFO L93 Difference]: Finished difference Result 15113 states and 20036 transitions. [2020-10-28 13:16:10,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:16:10,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 430 [2020-10-28 13:16:10,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:10,644 INFO L225 Difference]: With dead ends: 15113 [2020-10-28 13:16:10,644 INFO L226 Difference]: Without dead ends: 8775 [2020-10-28 13:16:10,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:16:10,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8775 states. [2020-10-28 13:16:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8775 to 8060. [2020-10-28 13:16:10,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8060 states. [2020-10-28 13:16:11,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8060 states to 8060 states and 10110 transitions. [2020-10-28 13:16:11,031 INFO L78 Accepts]: Start accepts. Automaton has 8060 states and 10110 transitions. Word has length 430 [2020-10-28 13:16:11,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:11,034 INFO L481 AbstractCegarLoop]: Abstraction has 8060 states and 10110 transitions. [2020-10-28 13:16:11,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:16:11,035 INFO L276 IsEmpty]: Start isEmpty. Operand 8060 states and 10110 transitions. [2020-10-28 13:16:11,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 482 [2020-10-28 13:16:11,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:11,051 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-10-28 13:16:11,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:16:11,052 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:11,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:11,053 INFO L82 PathProgramCache]: Analyzing trace with hash -296332578, now seen corresponding path program 1 times [2020-10-28 13:16:11,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:11,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584194832] [2020-10-28 13:16:11,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:11,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:11,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:11,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:11,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:15,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:16,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:16,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-28 13:16:16,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:16:16,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-28 13:16:16,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:16,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:16,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:16,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:16:16,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-28 13:16:16,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:16,448 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:16:16,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:16,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:16,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:16,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:16,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:16,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:16:16,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:16,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:16,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:16,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:16,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:16,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:16,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:16,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:16,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:16,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:16,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:16:16,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:16,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-28 13:16:16,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:16,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:16,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:16,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:16:16,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:16:16,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:16:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:17,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:17,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:17,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 13:16:17,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:17,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-28 13:16:17,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:17,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:17,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:17,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:17,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-28 13:16:17,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:16:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:16:17,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584194832] [2020-10-28 13:16:17,844 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:17,844 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:16:17,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664743622] [2020-10-28 13:16:17,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:16:17,846 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:17,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:16:17,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:16:17,846 INFO L87 Difference]: Start difference. First operand 8060 states and 10110 transitions. Second operand 7 states. [2020-10-28 13:16:23,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:23,293 INFO L93 Difference]: Finished difference Result 15909 states and 20685 transitions. [2020-10-28 13:16:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:16:23,294 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 481 [2020-10-28 13:16:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:23,334 INFO L225 Difference]: With dead ends: 15909 [2020-10-28 13:16:23,334 INFO L226 Difference]: Without dead ends: 8194 [2020-10-28 13:16:23,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:16:23,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8194 states. [2020-10-28 13:16:23,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8194 to 8062. [2020-10-28 13:16:23,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8062 states. [2020-10-28 13:16:23,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8062 states to 8062 states and 10112 transitions. [2020-10-28 13:16:23,599 INFO L78 Accepts]: Start accepts. Automaton has 8062 states and 10112 transitions. Word has length 481 [2020-10-28 13:16:23,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:23,601 INFO L481 AbstractCegarLoop]: Abstraction has 8062 states and 10112 transitions. [2020-10-28 13:16:23,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:16:23,601 INFO L276 IsEmpty]: Start isEmpty. Operand 8062 states and 10112 transitions. [2020-10-28 13:16:23,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 484 [2020-10-28 13:16:23,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:23,610 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:16:23,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:16:23,610 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:23,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:23,611 INFO L82 PathProgramCache]: Analyzing trace with hash 1347689574, now seen corresponding path program 1 times [2020-10-28 13:16:23,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:23,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123994008] [2020-10-28 13:16:23,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:23,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:23,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:24,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:24,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:25,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:26,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:26,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 499 [2020-10-28 13:16:26,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:16:26,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3084 [2020-10-28 13:16:26,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:26,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:26,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:16:26,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:16:26,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:16:26,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:26,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:26,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:26,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:26,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:16:26,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:26,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:26,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:26,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:26,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:26,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:16:27,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:27,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:27,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:16:27,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:27,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 13:16:27,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:27,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:27,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:16:27,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:16:27,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:16:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:27,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:27,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:27,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:16:27,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:27,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-28 13:16:27,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:27,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:27,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:27,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:27,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:16:27,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:28,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-28 13:16:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:28,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:28,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:28,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:16:28,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:28,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:16:28,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:28,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 13:16:28,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:28,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 272 proven. 74 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-28 13:16:28,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123994008] [2020-10-28 13:16:28,992 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:28,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:16:28,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442696224] [2020-10-28 13:16:28,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:16:29,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:29,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:16:29,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:16:29,002 INFO L87 Difference]: Start difference. First operand 8062 states and 10112 transitions. Second operand 8 states. [2020-10-28 13:16:39,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:39,327 INFO L93 Difference]: Finished difference Result 17201 states and 21572 transitions. [2020-10-28 13:16:39,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 13:16:39,328 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 483 [2020-10-28 13:16:39,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:39,355 INFO L225 Difference]: With dead ends: 17201 [2020-10-28 13:16:39,355 INFO L226 Difference]: Without dead ends: 8732 [2020-10-28 13:16:39,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2020-10-28 13:16:39,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8732 states. [2020-10-28 13:16:39,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8732 to 8343. [2020-10-28 13:16:39,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8343 states. [2020-10-28 13:16:39,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8343 states to 8343 states and 9585 transitions. [2020-10-28 13:16:39,571 INFO L78 Accepts]: Start accepts. Automaton has 8343 states and 9585 transitions. Word has length 483 [2020-10-28 13:16:39,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:39,572 INFO L481 AbstractCegarLoop]: Abstraction has 8343 states and 9585 transitions. [2020-10-28 13:16:39,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:16:39,572 INFO L276 IsEmpty]: Start isEmpty. Operand 8343 states and 9585 transitions. [2020-10-28 13:16:39,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 491 [2020-10-28 13:16:39,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:39,579 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 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] [2020-10-28 13:16:39,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:16:39,579 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:39,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:39,580 INFO L82 PathProgramCache]: Analyzing trace with hash 806191316, now seen corresponding path program 1 times [2020-10-28 13:16:39,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:39,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231055037] [2020-10-28 13:16:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:39,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:39,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:40,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:41,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:42,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:43,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:43,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 504 [2020-10-28 13:16:43,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:16:43,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3332 [2020-10-28 13:16:43,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:43,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:43,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 13:16:43,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:16:43,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 495 [2020-10-28 13:16:43,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:43,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:43,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:43,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:43,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:43,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:43,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:43,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:16:43,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:43,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:43,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:16:43,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:16:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:43,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:43,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:16:43,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:43,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-28 13:16:43,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:43,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:43,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:16:43,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:43,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-28 13:16:43,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:43,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:16:44,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:44,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:44,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:44,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 13:16:44,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:44,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-28 13:16:44,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:44,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:16:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:16:44,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-28 13:16:44,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:45,065 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 46 [2020-10-28 13:16:47,304 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 13:16:47,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231055037] [2020-10-28 13:16:47,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:16:47,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:16:47,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913254539] [2020-10-28 13:16:47,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 13:16:47,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:16:47,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 13:16:47,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 13:16:47,306 INFO L87 Difference]: Start difference. First operand 8343 states and 9585 transitions. Second operand 9 states. [2020-10-28 13:16:50,007 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2020-10-28 13:16:50,977 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 69 [2020-10-28 13:16:54,790 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 53 [2020-10-28 13:16:56,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:16:56,249 INFO L93 Difference]: Finished difference Result 18132 states and 20777 transitions. [2020-10-28 13:16:56,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:16:56,250 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 490 [2020-10-28 13:16:56,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:16:56,282 INFO L225 Difference]: With dead ends: 18132 [2020-10-28 13:16:56,283 INFO L226 Difference]: Without dead ends: 10134 [2020-10-28 13:16:56,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-28 13:16:56,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10134 states. [2020-10-28 13:16:56,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10134 to 10059. [2020-10-28 13:16:56,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10059 states. [2020-10-28 13:16:56,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10059 states to 10059 states and 11353 transitions. [2020-10-28 13:16:56,544 INFO L78 Accepts]: Start accepts. Automaton has 10059 states and 11353 transitions. Word has length 490 [2020-10-28 13:16:56,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:16:56,545 INFO L481 AbstractCegarLoop]: Abstraction has 10059 states and 11353 transitions. [2020-10-28 13:16:56,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 13:16:56,545 INFO L276 IsEmpty]: Start isEmpty. Operand 10059 states and 11353 transitions. [2020-10-28 13:16:56,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-10-28 13:16:56,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:16:56,553 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 13:16:56,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:16:56,553 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:16:56,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:16:56,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1115150014, now seen corresponding path program 1 times [2020-10-28 13:16:56,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:16:56,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009491997] [2020-10-28 13:16:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:16:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:56,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:57,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:58,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:59,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:59,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:59,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 525 [2020-10-28 13:16:59,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:16:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2721 [2020-10-28 13:16:59,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:59,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:16:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-28 13:16:59,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-28 13:16:59,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:59,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:16:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:59,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:59,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:59,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:16:59,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:59,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:16:59,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:59,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:59,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:59,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:59,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:16:59,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:59,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:59,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:16:59,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:59,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 13:16:59,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:59,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:59,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:16:59,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:16:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:59,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:16:59,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:59,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:16:59,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:16:59,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:16:59,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:16:59,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:16:59,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:16:59,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:16:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:16:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:16:59,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:16:59,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:16:59,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:16:59,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:16:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:00,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:00,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:00,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 13:17:00,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:17:00,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:17:00,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:00,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:00,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 13:17:00,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:00,251 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 188 proven. 3 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-28 13:17:00,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009491997] [2020-10-28 13:17:00,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:00,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:17:00,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873025860] [2020-10-28 13:17:00,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:17:00,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:00,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:17:00,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:17:00,254 INFO L87 Difference]: Start difference. First operand 10059 states and 11353 transitions. Second operand 6 states. [2020-10-28 13:17:08,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:08,282 INFO L93 Difference]: Finished difference Result 25247 states and 29877 transitions. [2020-10-28 13:17:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:17:08,284 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 509 [2020-10-28 13:17:08,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:08,331 INFO L225 Difference]: With dead ends: 25247 [2020-10-28 13:17:08,331 INFO L226 Difference]: Without dead ends: 16213 [2020-10-28 13:17:08,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:17:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16213 states. [2020-10-28 13:17:08,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16213 to 14516. [2020-10-28 13:17:08,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14516 states. [2020-10-28 13:17:08,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14516 states to 14516 states and 17066 transitions. [2020-10-28 13:17:08,676 INFO L78 Accepts]: Start accepts. Automaton has 14516 states and 17066 transitions. Word has length 509 [2020-10-28 13:17:08,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:08,677 INFO L481 AbstractCegarLoop]: Abstraction has 14516 states and 17066 transitions. [2020-10-28 13:17:08,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:17:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 14516 states and 17066 transitions. [2020-10-28 13:17:08,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2020-10-28 13:17:08,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:08,688 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:17:08,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:17:08,689 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:08,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:08,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1978263626, now seen corresponding path program 1 times [2020-10-28 13:17:08,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:08,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612547053] [2020-10-28 13:17:08,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:08,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:08,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:10,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:10,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:10,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-28 13:17:10,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:17:10,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1281 [2020-10-28 13:17:10,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:10,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 13:17:10,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:17:10,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 340 [2020-10-28 13:17:10,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:10,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:10,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:10,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:10,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:10,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:10,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:17:10,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:10,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:10,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:10,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:10,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:10,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:10,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:10,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:17:10,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:10,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-28 13:17:10,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:10,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:10,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:10,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:17:10,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:17:10,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:17:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:10,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:11,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:11,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-28 13:17:11,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:11,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-28 13:17:11,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:11,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:11,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:17:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:11,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-28 13:17:11,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:11,903 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 306 proven. 60 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:17:11,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612547053] [2020-10-28 13:17:11,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:11,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:17:11,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944717944] [2020-10-28 13:17:11,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:17:11,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:11,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:17:11,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:17:11,906 INFO L87 Difference]: Start difference. First operand 14516 states and 17066 transitions. Second operand 8 states. [2020-10-28 13:17:20,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:20,156 INFO L93 Difference]: Finished difference Result 31456 states and 37692 transitions. [2020-10-28 13:17:20,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:17:20,158 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 587 [2020-10-28 13:17:20,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:20,211 INFO L225 Difference]: With dead ends: 31456 [2020-10-28 13:17:20,211 INFO L226 Difference]: Without dead ends: 17965 [2020-10-28 13:17:20,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:17:20,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17965 states. [2020-10-28 13:17:20,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17965 to 17268. [2020-10-28 13:17:20,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17268 states. [2020-10-28 13:17:20,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17268 states to 17268 states and 20669 transitions. [2020-10-28 13:17:20,633 INFO L78 Accepts]: Start accepts. Automaton has 17268 states and 20669 transitions. Word has length 587 [2020-10-28 13:17:20,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:20,635 INFO L481 AbstractCegarLoop]: Abstraction has 17268 states and 20669 transitions. [2020-10-28 13:17:20,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:17:20,635 INFO L276 IsEmpty]: Start isEmpty. Operand 17268 states and 20669 transitions. [2020-10-28 13:17:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2020-10-28 13:17:20,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:20,647 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:17:20,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:17:20,647 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:20,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:20,648 INFO L82 PathProgramCache]: Analyzing trace with hash -783585900, now seen corresponding path program 1 times [2020-10-28 13:17:20,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:20,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836765022] [2020-10-28 13:17:20,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:20,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:21,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:21,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 614 [2020-10-28 13:17:21,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:21,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 511 [2020-10-28 13:17:21,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:21,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-28 13:17:21,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 13:17:21,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:21,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:21,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:21,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:21,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:21,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:21,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:21,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:17:21,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:21,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:21,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:21,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:21,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:21,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:21,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:21,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:21,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:17:21,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:21,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:17:21,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:21,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:21,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:21,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:21,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:21,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:21,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:17:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:21,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:21,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:21,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:17:21,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:21,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 13:17:21,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:21,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:21,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:21,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:21,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:17:21,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:21,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:17:21,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:21,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:22,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:22,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 13:17:22,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:22,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 13:17:22,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:22,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:22,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-28 13:17:22,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:22,281 INFO L134 CoverageAnalysis]: Checked inductivity of 563 backedges. 462 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-28 13:17:22,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836765022] [2020-10-28 13:17:22,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:22,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:22,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642889756] [2020-10-28 13:17:22,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:22,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:22,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:22,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:22,284 INFO L87 Difference]: Start difference. First operand 17268 states and 20669 transitions. Second operand 7 states. [2020-10-28 13:17:28,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:28,952 INFO L93 Difference]: Finished difference Result 35242 states and 43594 transitions. [2020-10-28 13:17:28,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:17:28,953 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 598 [2020-10-28 13:17:28,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:29,017 INFO L225 Difference]: With dead ends: 35242 [2020-10-28 13:17:29,017 INFO L226 Difference]: Without dead ends: 18999 [2020-10-28 13:17:29,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:17:29,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18999 states. [2020-10-28 13:17:29,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18999 to 18633. [2020-10-28 13:17:29,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18633 states. [2020-10-28 13:17:29,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18633 states to 18633 states and 22520 transitions. [2020-10-28 13:17:29,450 INFO L78 Accepts]: Start accepts. Automaton has 18633 states and 22520 transitions. Word has length 598 [2020-10-28 13:17:29,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:29,451 INFO L481 AbstractCegarLoop]: Abstraction has 18633 states and 22520 transitions. [2020-10-28 13:17:29,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:29,452 INFO L276 IsEmpty]: Start isEmpty. Operand 18633 states and 22520 transitions. [2020-10-28 13:17:29,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2020-10-28 13:17:29,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:29,469 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:17:29,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:17:29,470 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:29,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:29,471 INFO L82 PathProgramCache]: Analyzing trace with hash -452662582, now seen corresponding path program 1 times [2020-10-28 13:17:29,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:29,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781046930] [2020-10-28 13:17:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:29,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:30,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:30,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:32,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:32,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 707 [2020-10-28 13:17:32,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:17:32,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2676 [2020-10-28 13:17:32,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:32,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:17:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 524 [2020-10-28 13:17:32,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-28 13:17:32,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:32,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:32,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:32,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:32,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:32,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:32,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:32,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:17:32,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:32,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:32,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:32,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:32,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:32,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:32,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:32,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:32,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:32,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:17:32,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:17:32,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:32,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:32,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:32,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:32,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:17:32,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:32,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:32,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:32,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:17:32,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:32,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:17:32,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:32,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:32,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:32,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:32,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:32,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:32,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:17:32,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:32,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:32,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:32,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:17:32,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:32,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 13:17:32,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:32,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:32,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:17:32,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:32,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 518 [2020-10-28 13:17:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:32,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:33,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:33,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:33,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:17:33,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:17:33,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 13:17:33,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:33,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:33,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:33,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:33,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:17:33,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:33,569 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 499 proven. 62 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-28 13:17:33,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781046930] [2020-10-28 13:17:33,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:33,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:17:33,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55045562] [2020-10-28 13:17:33,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:17:33,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:33,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:17:33,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:17:33,571 INFO L87 Difference]: Start difference. First operand 18633 states and 22520 transitions. Second operand 6 states. [2020-10-28 13:17:41,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:41,512 INFO L93 Difference]: Finished difference Result 36277 states and 44113 transitions. [2020-10-28 13:17:41,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:17:41,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 689 [2020-10-28 13:17:41,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:41,562 INFO L225 Difference]: With dead ends: 36277 [2020-10-28 13:17:41,562 INFO L226 Difference]: Without dead ends: 18669 [2020-10-28 13:17:41,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:17:41,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18669 states. [2020-10-28 13:17:41,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18669 to 18296. [2020-10-28 13:17:41,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18296 states. [2020-10-28 13:17:41,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18296 states to 18296 states and 21797 transitions. [2020-10-28 13:17:41,949 INFO L78 Accepts]: Start accepts. Automaton has 18296 states and 21797 transitions. Word has length 689 [2020-10-28 13:17:41,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:41,950 INFO L481 AbstractCegarLoop]: Abstraction has 18296 states and 21797 transitions. [2020-10-28 13:17:41,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:17:41,951 INFO L276 IsEmpty]: Start isEmpty. Operand 18296 states and 21797 transitions. [2020-10-28 13:17:41,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 737 [2020-10-28 13:17:41,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:41,970 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:17:41,970 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:17:41,971 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:41,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:41,971 INFO L82 PathProgramCache]: Analyzing trace with hash 80043360, now seen corresponding path program 1 times [2020-10-28 13:17:41,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:41,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337285626] [2020-10-28 13:17:41,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:42,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:42,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:43,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:43,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 752 [2020-10-28 13:17:43,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 902 [2020-10-28 13:17:43,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:43,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-28 13:17:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 267 [2020-10-28 13:17:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:43,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:43,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:43,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:43,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:43,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:43,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:17:43,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:43,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:43,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:43,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:43,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:43,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:43,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:17:43,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:43,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:17:43,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:43,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:43,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:43,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:17:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:43,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:43,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:43,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:17:43,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:43,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:17:43,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:43,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:43,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:43,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:43,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 13:17:43,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 128 [2020-10-28 13:17:43,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:17:43,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:43,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:44,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:44,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 265 [2020-10-28 13:17:44,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:44,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-28 13:17:44,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:44,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:44,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-28 13:17:44,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:45,240 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 583 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-28 13:17:45,240 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337285626] [2020-10-28 13:17:45,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:45,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:45,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145869271] [2020-10-28 13:17:45,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:45,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:45,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:45,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:45,242 INFO L87 Difference]: Start difference. First operand 18296 states and 21797 transitions. Second operand 7 states. [2020-10-28 13:17:51,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:17:51,958 INFO L93 Difference]: Finished difference Result 38647 states and 46695 transitions. [2020-10-28 13:17:51,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:17:51,959 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 736 [2020-10-28 13:17:51,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:17:52,028 INFO L225 Difference]: With dead ends: 38647 [2020-10-28 13:17:52,028 INFO L226 Difference]: Without dead ends: 21376 [2020-10-28 13:17:52,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:17:52,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21376 states. [2020-10-28 13:17:52,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21376 to 21344. [2020-10-28 13:17:52,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21344 states. [2020-10-28 13:17:52,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21344 states to 21344 states and 25188 transitions. [2020-10-28 13:17:52,641 INFO L78 Accepts]: Start accepts. Automaton has 21344 states and 25188 transitions. Word has length 736 [2020-10-28 13:17:52,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:17:52,643 INFO L481 AbstractCegarLoop]: Abstraction has 21344 states and 25188 transitions. [2020-10-28 13:17:52,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:17:52,643 INFO L276 IsEmpty]: Start isEmpty. Operand 21344 states and 25188 transitions. [2020-10-28 13:17:52,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 738 [2020-10-28 13:17:52,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:17:52,661 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:17:52,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:17:52,661 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:17:52,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:17:52,662 INFO L82 PathProgramCache]: Analyzing trace with hash 1817145602, now seen corresponding path program 1 times [2020-10-28 13:17:52,662 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:17:52,662 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1383708318] [2020-10-28 13:17:52,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:17:52,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:52,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:53,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:55,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:57,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:57,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:57,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 753 [2020-10-28 13:17:57,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:17:57,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 13:17:57,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:57,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:57,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:57,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:17:57,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:17:57,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:58,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:17:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:58,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:58,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:58,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:17:58,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:58,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:17:58,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:58,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:58,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:58,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:58,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:58,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:17:58,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:58,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:58,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:17:58,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:58,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 13:17:58,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:58,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:58,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:17:58,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:17:58,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:17:58,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:58,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:17:58,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:58,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:58,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:58,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:17:58,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:58,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-28 13:17:58,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:58,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:58,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:17:58,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:17:58,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 240 [2020-10-28 13:17:58,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:58,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 494 [2020-10-28 13:17:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:17:59,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:17:59,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:17:59,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 13:17:59,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:17:59,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:17:59,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:17:59,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:17:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:17:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-28 13:17:59,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:17:59,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:17:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 785 backedges. 420 proven. 182 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-28 13:17:59,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1383708318] [2020-10-28 13:17:59,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:17:59,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:17:59,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795501184] [2020-10-28 13:17:59,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:17:59,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:17:59,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:17:59,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:17:59,683 INFO L87 Difference]: Start difference. First operand 21344 states and 25188 transitions. Second operand 7 states. [2020-10-28 13:18:07,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:07,241 INFO L93 Difference]: Finished difference Result 45770 states and 54852 transitions. [2020-10-28 13:18:07,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:18:07,243 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 737 [2020-10-28 13:18:07,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:07,331 INFO L225 Difference]: With dead ends: 45770 [2020-10-28 13:18:07,331 INFO L226 Difference]: Without dead ends: 25451 [2020-10-28 13:18:07,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:18:07,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25451 states. [2020-10-28 13:18:07,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25451 to 25443. [2020-10-28 13:18:07,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25443 states. [2020-10-28 13:18:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25443 states to 25443 states and 30437 transitions. [2020-10-28 13:18:07,858 INFO L78 Accepts]: Start accepts. Automaton has 25443 states and 30437 transitions. Word has length 737 [2020-10-28 13:18:07,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:07,858 INFO L481 AbstractCegarLoop]: Abstraction has 25443 states and 30437 transitions. [2020-10-28 13:18:07,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:18:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 25443 states and 30437 transitions. [2020-10-28 13:18:07,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2020-10-28 13:18:07,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:07,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:07,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:18:07,876 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:07,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:07,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1888394146, now seen corresponding path program 1 times [2020-10-28 13:18:07,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:07,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086502840] [2020-10-28 13:18:07,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:08,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:10,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:10,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 765 [2020-10-28 13:18:10,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:18:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2832 [2020-10-28 13:18:10,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:10,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 13:18:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-28 13:18:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 345 [2020-10-28 13:18:10,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:11,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:11,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:11,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:11,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:11,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:11,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:18:11,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:11,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:11,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:11,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:11,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:11,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:11,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:11,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:11,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:11,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:18:11,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:11,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:18:11,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:11,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:11,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:11,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:11,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:18:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:11,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:11,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:18:11,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:11,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:18:11,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:11,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:11,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 13:18:11,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:11,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:18:11,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:11,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:11,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:11,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 278 [2020-10-28 13:18:11,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:11,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 486 [2020-10-28 13:18:11,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:11,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:18:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:18:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-28 13:18:11,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:12,388 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 524 proven. 61 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-28 13:18:12,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086502840] [2020-10-28 13:18:12,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:18:12,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:18:12,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6365337] [2020-10-28 13:18:12,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:18:12,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:12,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:18:12,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:18:12,391 INFO L87 Difference]: Start difference. First operand 25443 states and 30437 transitions. Second operand 8 states. [2020-10-28 13:18:23,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:23,111 INFO L93 Difference]: Finished difference Result 57408 states and 69332 transitions. [2020-10-28 13:18:23,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:18:23,113 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 749 [2020-10-28 13:18:23,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:23,189 INFO L225 Difference]: With dead ends: 57408 [2020-10-28 13:18:23,189 INFO L226 Difference]: Without dead ends: 32990 [2020-10-28 13:18:23,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:18:23,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32990 states. [2020-10-28 13:18:23,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32990 to 31284. [2020-10-28 13:18:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31284 states. [2020-10-28 13:18:23,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31284 states to 31284 states and 37780 transitions. [2020-10-28 13:18:23,726 INFO L78 Accepts]: Start accepts. Automaton has 31284 states and 37780 transitions. Word has length 749 [2020-10-28 13:18:23,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:23,727 INFO L481 AbstractCegarLoop]: Abstraction has 31284 states and 37780 transitions. [2020-10-28 13:18:23,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:18:23,727 INFO L276 IsEmpty]: Start isEmpty. Operand 31284 states and 37780 transitions. [2020-10-28 13:18:23,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 803 [2020-10-28 13:18:23,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:23,746 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:23,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 13:18:23,746 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:23,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:23,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1142167152, now seen corresponding path program 1 times [2020-10-28 13:18:23,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:23,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003098113] [2020-10-28 13:18:23,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:23,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:25,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:25,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:25,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 820 [2020-10-28 13:18:25,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:18:25,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1913 [2020-10-28 13:18:25,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:25,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:25,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 13:18:25,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 637 [2020-10-28 13:18:25,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-28 13:18:25,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:26,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:26,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:26,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:26,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:26,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:26,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:18:26,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:26,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:26,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:26,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:26,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:26,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:18:26,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:26,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:18:26,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:26,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:18:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:26,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:18:26,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:18:26,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255