/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/Problem18_label27.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:52:45,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:52:45,897 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:52:45,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:52:45,949 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:52:45,957 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:52:45,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:52:45,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:52:45,969 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:52:45,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:52:45,980 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:52:45,982 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:52:45,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:52:45,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:52:45,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:52:45,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:52:45,995 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:52:45,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:52:46,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:52:46,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:52:46,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:52:46,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:52:46,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:52:46,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:52:46,042 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:52:46,042 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:52:46,042 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:52:46,044 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:52:46,044 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:52:46,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:52:46,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:52:46,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:52:46,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:52:46,049 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:52:46,050 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:52:46,050 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:52:46,051 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:52:46,051 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:52:46,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:52:46,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:52:46,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:52:46,055 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 13:52:46,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:52:46,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:52:46,085 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:52:46,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:52:46,086 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:52:46,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:52:46,087 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:52:46,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:52:46,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:52:46,087 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:52:46,087 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:52:46,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:52:46,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:52:46,088 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:52:46,088 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:52:46,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:52:46,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:52:46,089 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:52:46,089 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:52:46,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:52:46,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:52:46,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:52:46,090 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:52:46,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:52:46,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:52:46,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:52:46,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:52:46,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:52:46,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:52:46,092 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:52:46,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:52:46,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:52:46,537 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:52:46,539 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:52:46,540 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:52:46,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label27.c [2020-10-28 13:52:46,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e4bd1362/ab855ea963704457a2e0b7c19b615314/FLAG8b6f4ffd9 [2020-10-28 13:52:47,562 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:52:47,563 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label27.c [2020-10-28 13:52:47,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e4bd1362/ab855ea963704457a2e0b7c19b615314/FLAG8b6f4ffd9 [2020-10-28 13:52:48,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e4bd1362/ab855ea963704457a2e0b7c19b615314 [2020-10-28 13:52:48,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:52:48,115 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:52:48,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:52:48,120 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:52:48,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:52:48,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:52:48" (1/1) ... [2020-10-28 13:52:48,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2945b9b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:48, skipping insertion in model container [2020-10-28 13:52:48,130 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:52:48" (1/1) ... [2020-10-28 13:52:48,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:52:48,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:52:49,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:52:49,484 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:52:50,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:52:50,174 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:52:50,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:50 WrapperNode [2020-10-28 13:52:50,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:52:50,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:52:50,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:52:50,179 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:52:50,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:50" (1/1) ... [2020-10-28 13:52:50,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:50" (1/1) ... [2020-10-28 13:52:50,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:50" (1/1) ... [2020-10-28 13:52:50,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:50" (1/1) ... [2020-10-28 13:52:50,418 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:50" (1/1) ... [2020-10-28 13:52:50,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:50" (1/1) ... [2020-10-28 13:52:50,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:50" (1/1) ... [2020-10-28 13:52:50,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:52:50,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:52:50,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:52:50,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:52:50,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:50" (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 13:52:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:52:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:52:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:52:50,594 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:52:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:52:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:52:50,595 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:52:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:52:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:52:50,595 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:52:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:52:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:52:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:52:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:52:50,596 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:52:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:52:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:52:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:52:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:52:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:52:50,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:52:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:52:50,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:52:54,342 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:52:54,342 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:52:54,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:52:54 BoogieIcfgContainer [2020-10-28 13:52:54,348 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:52:54,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:52:54,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:52:54,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:52:54,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:52:48" (1/3) ... [2020-10-28 13:52:54,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a07614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:52:54, skipping insertion in model container [2020-10-28 13:52:54,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:52:50" (2/3) ... [2020-10-28 13:52:54,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a07614b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:52:54, skipping insertion in model container [2020-10-28 13:52:54,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:52:54" (3/3) ... [2020-10-28 13:52:54,361 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label27.c [2020-10-28 13:52:54,374 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:52:54,381 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:52:54,396 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:52:54,446 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:52:54,446 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:52:54,446 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:52:54,446 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:52:54,447 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:52:54,447 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:52:54,447 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:52:54,447 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:52:54,495 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:52:54,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-28 13:52:54,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:52:54,503 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] [2020-10-28 13:52:54,504 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:52:54,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:52:54,509 INFO L82 PathProgramCache]: Analyzing trace with hash 81102480, now seen corresponding path program 1 times [2020-10-28 13:52:54,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:52:54,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851052593] [2020-10-28 13:52:54,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:52:54,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:54,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:55,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:55,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 13:52:55,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:55,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-10-28 13:52:55,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:55,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:52:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:52:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 13:52:55,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:52:55,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:52:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:52:55,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:52:55,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:52:55,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:52:55,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:52:55,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:52:55,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:52:55,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:52:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:52:55,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:52:55,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:52:55,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:52:55,528 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 13:52:55,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851052593] [2020-10-28 13:52:55,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:52:55,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:52:55,532 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233716753] [2020-10-28 13:52:55,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:52:55,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:52:55,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:52:55,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:52:55,561 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-28 13:53:07,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:07,938 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-28 13:53:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:53:07,942 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-28 13:53:07,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:07,981 INFO L225 Difference]: With dead ends: 2989 [2020-10-28 13:53:07,981 INFO L226 Difference]: Without dead ends: 2143 [2020-10-28 13:53:07,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:08,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-28 13:53:08,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-28 13:53:08,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-28 13:53:08,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3228 transitions. [2020-10-28 13:53:08,229 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3228 transitions. Word has length 37 [2020-10-28 13:53:08,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:08,230 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3228 transitions. [2020-10-28 13:53:08,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:53:08,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3228 transitions. [2020-10-28 13:53:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 13:53:08,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:08,241 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:08,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:53:08,242 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:08,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:08,245 INFO L82 PathProgramCache]: Analyzing trace with hash -878391991, now seen corresponding path program 1 times [2020-10-28 13:53:08,245 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:08,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336687301] [2020-10-28 13:53:08,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:08,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:08,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:08,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:09,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:09,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 13:53:09,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:53:09,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-28 13:53:09,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:09,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:09,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:53:09,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:53:09,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:53:09,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:53:09,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:09,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:09,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:09,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:09,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:09,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:53:09,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:09,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:09,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:09,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:53:09,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:53:09,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:09,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:09,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:09,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:09,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:53:09,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:09,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:53:09,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:09,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:09,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:53:09,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:09,729 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:53:09,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336687301] [2020-10-28 13:53:09,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:53:09,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:53:09,730 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696601124] [2020-10-28 13:53:09,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:53:09,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:09,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:53:09,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:09,734 INFO L87 Difference]: Start difference. First operand 2136 states and 3228 transitions. Second operand 7 states. [2020-10-28 13:53:23,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:23,107 INFO L93 Difference]: Finished difference Result 6520 states and 9963 transitions. [2020-10-28 13:53:23,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:53:23,108 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 107 [2020-10-28 13:53:23,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:23,141 INFO L225 Difference]: With dead ends: 6520 [2020-10-28 13:53:23,141 INFO L226 Difference]: Without dead ends: 4390 [2020-10-28 13:53:23,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:53:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4390 states. [2020-10-28 13:53:23,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4390 to 4342. [2020-10-28 13:53:23,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4342 states. [2020-10-28 13:53:23,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4342 states to 4342 states and 5865 transitions. [2020-10-28 13:53:23,356 INFO L78 Accepts]: Start accepts. Automaton has 4342 states and 5865 transitions. Word has length 107 [2020-10-28 13:53:23,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:23,357 INFO L481 AbstractCegarLoop]: Abstraction has 4342 states and 5865 transitions. [2020-10-28 13:53:23,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:53:23,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4342 states and 5865 transitions. [2020-10-28 13:53:23,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 13:53:23,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:23,371 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:23,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:53:23,372 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:23,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:23,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1437132475, now seen corresponding path program 1 times [2020-10-28 13:53:23,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:23,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640565789] [2020-10-28 13:53:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:23,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:23,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:24,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:24,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 13:53:24,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:53:24,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1421 [2020-10-28 13:53:24,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:24,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:53:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:53:24,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:53:24,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:24,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:25,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:25,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:25,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:25,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:25,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:53:25,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:25,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:25,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:25,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:53:25,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:25,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:25,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:25,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:25,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 13:53:25,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:25,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-28 13:53:25,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:25,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 13:53:25,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:25,481 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:53:25,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640565789] [2020-10-28 13:53:25,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:53:25,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:53:25,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761728093] [2020-10-28 13:53:25,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:53:25,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:25,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:53:25,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:53:25,489 INFO L87 Difference]: Start difference. First operand 4342 states and 5865 transitions. Second operand 7 states. [2020-10-28 13:53:37,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:37,351 INFO L93 Difference]: Finished difference Result 13234 states and 18292 transitions. [2020-10-28 13:53:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:53:37,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-10-28 13:53:37,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:37,407 INFO L225 Difference]: With dead ends: 13234 [2020-10-28 13:53:37,407 INFO L226 Difference]: Without dead ends: 8898 [2020-10-28 13:53:37,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:53:37,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8898 states. [2020-10-28 13:53:37,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8898 to 8057. [2020-10-28 13:53:37,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8057 states. [2020-10-28 13:53:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8057 states to 8057 states and 10136 transitions. [2020-10-28 13:53:37,684 INFO L78 Accepts]: Start accepts. Automaton has 8057 states and 10136 transitions. Word has length 169 [2020-10-28 13:53:37,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:37,685 INFO L481 AbstractCegarLoop]: Abstraction has 8057 states and 10136 transitions. [2020-10-28 13:53:37,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:53:37,686 INFO L276 IsEmpty]: Start isEmpty. Operand 8057 states and 10136 transitions. [2020-10-28 13:53:37,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-28 13:53:37,690 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:37,691 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:53:37,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:53:37,691 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:37,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:37,692 INFO L82 PathProgramCache]: Analyzing trace with hash -2070233096, now seen corresponding path program 1 times [2020-10-28 13:53:37,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:37,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374208951] [2020-10-28 13:53:37,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:37,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:37,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:38,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:41,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:41,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-28 13:53:41,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:53:41,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3428 [2020-10-28 13:53:41,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:41,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:41,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:53:41,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:53:41,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:53:41,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:41,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:53:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:41,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:41,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:41,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:53:41,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:41,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:53:41,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:41,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:41,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:53:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:53:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:53:41,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:41,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:53:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:41,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:41,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:41,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:53:41,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:41,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 13:53:41,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:41,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:41,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:53:41,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:53:41,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:53:41,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:41,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 13:53:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:41,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:41,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:53:41,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:53:41,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:53:41,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:53:41,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:53:41,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:53:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:53:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 13:53:41,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:53:41,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:53:42,151 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 58 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:53:42,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374208951] [2020-10-28 13:53:42,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:53:42,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:53:42,152 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377054193] [2020-10-28 13:53:42,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:53:42,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:53:42,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:53:42,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:53:42,155 INFO L87 Difference]: Start difference. First operand 8057 states and 10136 transitions. Second operand 8 states. [2020-10-28 13:53:55,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:53:55,689 INFO L93 Difference]: Finished difference Result 19345 states and 24742 transitions. [2020-10-28 13:53:55,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:53:55,690 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 232 [2020-10-28 13:53:55,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:53:55,781 INFO L225 Difference]: With dead ends: 19345 [2020-10-28 13:53:55,782 INFO L226 Difference]: Without dead ends: 11294 [2020-10-28 13:53:55,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:53:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11294 states. [2020-10-28 13:53:56,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11294 to 10277. [2020-10-28 13:53:56,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10277 states. [2020-10-28 13:53:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10277 states to 10277 states and 12649 transitions. [2020-10-28 13:53:56,159 INFO L78 Accepts]: Start accepts. Automaton has 10277 states and 12649 transitions. Word has length 232 [2020-10-28 13:53:56,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:53:56,161 INFO L481 AbstractCegarLoop]: Abstraction has 10277 states and 12649 transitions. [2020-10-28 13:53:56,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:53:56,162 INFO L276 IsEmpty]: Start isEmpty. Operand 10277 states and 12649 transitions. [2020-10-28 13:53:56,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-28 13:53:56,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:53:56,172 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:53:56,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:53:56,173 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:53:56,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:53:56,173 INFO L82 PathProgramCache]: Analyzing trace with hash 692906935, now seen corresponding path program 1 times [2020-10-28 13:53:56,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:53:56,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404837763] [2020-10-28 13:53:56,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:53:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:53:56,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:56,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:56,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:53:57,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:00,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:00,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-28 13:54:00,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:54:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4287 [2020-10-28 13:54:00,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:00,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:00,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:54:00,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 13:54:00,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:00,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:00,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:00,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:00,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:00,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:54:00,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:00,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:00,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:00,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:54:00,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:00,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:01,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:01,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:54:01,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:01,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 13:54:01,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:01,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:01,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:01,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:01,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:54:01,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:54:01,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:54:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:01,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:01,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:01,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:54:01,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:01,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-28 13:54:01,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:01,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:01,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:54:01,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:01,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-28 13:54:01,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:01,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:01,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:01,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:54:01,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:01,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:54:01,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:01,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:01,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:01,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 13:54:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 210 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 13:54:01,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404837763] [2020-10-28 13:54:01,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:01,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:54:01,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002802928] [2020-10-28 13:54:01,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:54:01,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:01,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:54:01,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:54:01,950 INFO L87 Difference]: Start difference. First operand 10277 states and 12649 transitions. Second operand 8 states. [2020-10-28 13:54:20,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:20,902 INFO L93 Difference]: Finished difference Result 27840 states and 34347 transitions. [2020-10-28 13:54:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:54:20,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 418 [2020-10-28 13:54:20,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:20,965 INFO L225 Difference]: With dead ends: 27840 [2020-10-28 13:54:20,966 INFO L226 Difference]: Without dead ends: 13887 [2020-10-28 13:54:21,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:54:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13887 states. [2020-10-28 13:54:21,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13887 to 12397. [2020-10-28 13:54:21,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12397 states. [2020-10-28 13:54:21,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12397 states to 12397 states and 13363 transitions. [2020-10-28 13:54:21,326 INFO L78 Accepts]: Start accepts. Automaton has 12397 states and 13363 transitions. Word has length 418 [2020-10-28 13:54:21,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:21,327 INFO L481 AbstractCegarLoop]: Abstraction has 12397 states and 13363 transitions. [2020-10-28 13:54:21,327 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:54:21,327 INFO L276 IsEmpty]: Start isEmpty. Operand 12397 states and 13363 transitions. [2020-10-28 13:54:21,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-10-28 13:54:21,342 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:21,343 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:54:21,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:54:21,343 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:21,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:21,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1961321047, now seen corresponding path program 1 times [2020-10-28 13:54:21,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:21,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577326308] [2020-10-28 13:54:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:21,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:21,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:21,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:24,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:26,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:26,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-28 13:54:26,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:54:26,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 13:54:26,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:26,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:54:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:54:26,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:26,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:26,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:26,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:26,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:26,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:26,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:54:26,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:26,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:26,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:26,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:26,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:26,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:26,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:27,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:27,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:54:27,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:27,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-28 13:54:27,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:27,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:27,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:27,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:27,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:54:27,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:27,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:27,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:27,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:27,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:54:27,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:27,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:54:27,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:27,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:27,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:27,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:54:27,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:27,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:54:27,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:27,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:27,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:27,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 13:54:27,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:27,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 13:54:27,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:27,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:27,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:27,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:27,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 13:54:27,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:27,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:54:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:27,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:27,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:27,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 13:54:27,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:27,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:54:27,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:27,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 13:54:27,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:27,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 178 proven. 88 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 13:54:27,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577326308] [2020-10-28 13:54:27,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:27,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:54:27,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360939865] [2020-10-28 13:54:27,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:54:27,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:27,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:54:27,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:54:27,924 INFO L87 Difference]: Start difference. First operand 12397 states and 13363 transitions. Second operand 7 states. [2020-10-28 13:54:37,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:54:37,418 INFO L93 Difference]: Finished difference Result 30059 states and 32937 transitions. [2020-10-28 13:54:37,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:54:37,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 523 [2020-10-28 13:54:37,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:54:37,499 INFO L225 Difference]: With dead ends: 30059 [2020-10-28 13:54:37,499 INFO L226 Difference]: Without dead ends: 17668 [2020-10-28 13:54:37,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:54:37,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17668 states. [2020-10-28 13:54:38,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17668 to 16804. [2020-10-28 13:54:38,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16804 states. [2020-10-28 13:54:38,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16804 states to 16804 states and 18381 transitions. [2020-10-28 13:54:38,083 INFO L78 Accepts]: Start accepts. Automaton has 16804 states and 18381 transitions. Word has length 523 [2020-10-28 13:54:38,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:54:38,084 INFO L481 AbstractCegarLoop]: Abstraction has 16804 states and 18381 transitions. [2020-10-28 13:54:38,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:54:38,084 INFO L276 IsEmpty]: Start isEmpty. Operand 16804 states and 18381 transitions. [2020-10-28 13:54:38,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 621 [2020-10-28 13:54:38,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:54:38,108 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:54:38,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:54:38,108 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:54:38,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:54:38,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1615357976, now seen corresponding path program 1 times [2020-10-28 13:54:38,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:54:38,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121576553] [2020-10-28 13:54:38,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:54:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:38,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:38,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:38,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:43,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:43,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 640 [2020-10-28 13:54:43,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:54:43,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-28 13:54:43,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:43,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:43,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-28 13:54:43,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:54:43,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:43,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:54:43,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:43,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:43,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:43,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:54:43,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:43,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:54:43,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:43,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:43,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:43,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:43,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:43,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:43,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:54:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:43,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:43,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:43,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:54:43,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:43,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:54:43,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:43,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:43,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:43,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:54:43,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:43,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:43,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:43,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:54:43,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:43,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:54:43,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:43,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:43,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:43,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:43,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:54:43,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:43,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:43,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:43,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:54:43,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:43,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 13:54:43,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:43,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:54:43,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:54:43,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:54:43,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:43,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-10-28 13:54:43,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:43,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:44,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:44,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:54:44,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:44,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 13:54:44,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:44,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:54:44,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:54:44,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:54:44,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:54:44,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-10-28 13:54:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:54:44,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:54:44,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:54:44,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 13:54:44,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:54:44,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:54:44,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:54:44,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:54:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:54:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 13:54:44,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:54:44,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:54:44,774 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 310 proven. 88 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-10-28 13:54:44,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121576553] [2020-10-28 13:54:44,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:54:44,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:54:44,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711447130] [2020-10-28 13:54:44,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:54:44,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:54:44,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:54:44,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:54:44,777 INFO L87 Difference]: Start difference. First operand 16804 states and 18381 transitions. Second operand 8 states. [2020-10-28 13:55:00,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:00,402 INFO L93 Difference]: Finished difference Result 40897 states and 45695 transitions. [2020-10-28 13:55:00,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:55:00,403 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 620 [2020-10-28 13:55:00,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:00,483 INFO L225 Difference]: With dead ends: 40897 [2020-10-28 13:55:00,484 INFO L226 Difference]: Without dead ends: 23390 [2020-10-28 13:55:00,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:55:00,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23390 states. [2020-10-28 13:55:00,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23390 to 22587. [2020-10-28 13:55:00,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22587 states. [2020-10-28 13:55:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22587 states to 22587 states and 24561 transitions. [2020-10-28 13:55:01,012 INFO L78 Accepts]: Start accepts. Automaton has 22587 states and 24561 transitions. Word has length 620 [2020-10-28 13:55:01,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:01,014 INFO L481 AbstractCegarLoop]: Abstraction has 22587 states and 24561 transitions. [2020-10-28 13:55:01,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:55:01,014 INFO L276 IsEmpty]: Start isEmpty. Operand 22587 states and 24561 transitions. [2020-10-28 13:55:01,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2020-10-28 13:55:01,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:01,036 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:01,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:55:01,036 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:01,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:01,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1670056949, now seen corresponding path program 1 times [2020-10-28 13:55:01,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:01,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195693791] [2020-10-28 13:55:01,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:01,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:01,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:02,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:06,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:06,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 643 [2020-10-28 13:55:06,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:55:06,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 13:55:06,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:06,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 443 [2020-10-28 13:55:06,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-28 13:55:06,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:06,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:55:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:06,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:06,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:06,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:55:06,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:06,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:55:06,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:06,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:06,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:06,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:06,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:06,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:55:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:06,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:06,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:06,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:55:06,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:06,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:55:06,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:06,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:06,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:06,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:06,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:55:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:06,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:06,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:06,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:55:06,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:06,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:55:06,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:06,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:06,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:06,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:55:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:06,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:06,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:06,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:55:06,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:06,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:55:06,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:06,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:06,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 13:55:06,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:06,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-28 13:55:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:07,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:07,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:07,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 13:55:07,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:07,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-28 13:55:07,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:07,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:55:07,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 13:55:07,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 367 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-28 13:55:07,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195693791] [2020-10-28 13:55:07,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:55:07,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:55:07,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148253137] [2020-10-28 13:55:07,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:55:07,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:07,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:55:07,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:55:07,623 INFO L87 Difference]: Start difference. First operand 22587 states and 24561 transitions. Second operand 7 states. [2020-10-28 13:55:16,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:16,266 INFO L93 Difference]: Finished difference Result 55178 states and 61025 transitions. [2020-10-28 13:55:16,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:55:16,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 625 [2020-10-28 13:55:16,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:16,367 INFO L225 Difference]: With dead ends: 55178 [2020-10-28 13:55:16,367 INFO L226 Difference]: Without dead ends: 32597 [2020-10-28 13:55:16,401 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:55:16,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32597 states. [2020-10-28 13:55:16,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32597 to 32531. [2020-10-28 13:55:16,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32531 states. [2020-10-28 13:55:16,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32531 states to 32531 states and 35572 transitions. [2020-10-28 13:55:16,998 INFO L78 Accepts]: Start accepts. Automaton has 32531 states and 35572 transitions. Word has length 625 [2020-10-28 13:55:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:16,999 INFO L481 AbstractCegarLoop]: Abstraction has 32531 states and 35572 transitions. [2020-10-28 13:55:16,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:55:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 32531 states and 35572 transitions. [2020-10-28 13:55:17,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 661 [2020-10-28 13:55:17,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:17,026 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:55:17,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:55:17,026 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:17,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:17,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1367829858, now seen corresponding path program 1 times [2020-10-28 13:55:17,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:17,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551166894] [2020-10-28 13:55:17,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:17,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:17,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:17,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:20,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:22,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:22,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 680 [2020-10-28 13:55:22,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:55:22,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 13:55:22,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:22,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-28 13:55:22,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 13:55:22,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:22,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:55:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:22,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:22,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:55:22,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:22,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:55:22,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:22,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:22,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:22,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:22,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:55:22,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:22,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:22,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:22,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:55:22,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:22,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-28 13:55:22,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:22,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:55:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:22,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:55:22,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:22,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:22,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:22,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:55:22,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:22,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:55:22,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:22,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:22,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:55:22,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:22,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 315 [2020-10-28 13:55:22,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:22,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:22,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:22,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:55:22,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-28 13:55:22,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:22,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:55:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:55:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:23,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-28 13:55:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:23,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:23,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:23,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 13:55:23,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:23,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 13:55:23,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:23,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-28 13:55:23,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:23,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:23,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 543 [2020-10-28 13:55:23,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:23,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:23,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:23,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 13:55:23,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 13:55:23,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:23,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:23,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-28 13:55:23,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:23,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 243 proven. 190 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-10-28 13:55:23,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551166894] [2020-10-28 13:55:23,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:55:23,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:55:23,568 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274285627] [2020-10-28 13:55:23,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:55:23,570 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:23,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:55:23,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:55:23,571 INFO L87 Difference]: Start difference. First operand 32531 states and 35572 transitions. Second operand 7 states. [2020-10-28 13:55:33,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:33,682 INFO L93 Difference]: Finished difference Result 70807 states and 77451 transitions. [2020-10-28 13:55:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:55:33,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 660 [2020-10-28 13:55:33,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:33,798 INFO L225 Difference]: With dead ends: 70807 [2020-10-28 13:55:33,798 INFO L226 Difference]: Without dead ends: 38282 [2020-10-28 13:55:33,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:55:33,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38282 states. [2020-10-28 13:55:34,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38282 to 38198. [2020-10-28 13:55:34,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38198 states. [2020-10-28 13:55:34,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38198 states to 38198 states and 41454 transitions. [2020-10-28 13:55:34,779 INFO L78 Accepts]: Start accepts. Automaton has 38198 states and 41454 transitions. Word has length 660 [2020-10-28 13:55:34,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:34,780 INFO L481 AbstractCegarLoop]: Abstraction has 38198 states and 41454 transitions. [2020-10-28 13:55:34,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:55:34,780 INFO L276 IsEmpty]: Start isEmpty. Operand 38198 states and 41454 transitions. [2020-10-28 13:55:34,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2020-10-28 13:55:34,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:34,795 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:34,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:55:34,795 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:34,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:34,797 INFO L82 PathProgramCache]: Analyzing trace with hash -145170510, now seen corresponding path program 1 times [2020-10-28 13:55:34,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:34,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669704022] [2020-10-28 13:55:34,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:35,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:35,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:39,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:39,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 701 [2020-10-28 13:55:39,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:55:39,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 13:55:39,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:39,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 450 [2020-10-28 13:55:39,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-28 13:55:39,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:40,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:55:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:40,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:40,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:40,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:55:40,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:40,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:55:40,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:40,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:40,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:40,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:40,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:55:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:40,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:40,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:40,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:55:40,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:40,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:55:40,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:40,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:40,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:40,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:40,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:55:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:40,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:40,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:40,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:55:40,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:40,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:55:40,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:40,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:55:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:40,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:55:40,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:40,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-28 13:55:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:40,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:40,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:40,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:55:40,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:40,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:55:40,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:40,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:40,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:55:40,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:55:40,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 13:55:40,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:40,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-10-28 13:55:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:40,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:40,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:55:40,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-28 13:55:40,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:55:40,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-28 13:55:40,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:55:40,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:55:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:55:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:55:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 211 [2020-10-28 13:55:40,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:55:41,170 INFO L134 CoverageAnalysis]: Checked inductivity of 541 backedges. 418 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-28 13:55:41,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669704022] [2020-10-28 13:55:41,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:55:41,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:55:41,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789633369] [2020-10-28 13:55:41,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:55:41,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:55:41,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:55:41,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:55:41,173 INFO L87 Difference]: Start difference. First operand 38198 states and 41454 transitions. Second operand 8 states. [2020-10-28 13:55:56,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:55:56,224 INFO L93 Difference]: Finished difference Result 104099 states and 116491 transitions. [2020-10-28 13:55:56,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:55:56,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 683 [2020-10-28 13:55:56,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:55:56,450 INFO L225 Difference]: With dead ends: 104099 [2020-10-28 13:55:56,450 INFO L226 Difference]: Without dead ends: 65907 [2020-10-28 13:55:56,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:55:56,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65907 states. [2020-10-28 13:55:57,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65907 to 63052. [2020-10-28 13:55:57,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63052 states. [2020-10-28 13:55:57,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63052 states to 63052 states and 71301 transitions. [2020-10-28 13:55:57,792 INFO L78 Accepts]: Start accepts. Automaton has 63052 states and 71301 transitions. Word has length 683 [2020-10-28 13:55:57,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:55:57,793 INFO L481 AbstractCegarLoop]: Abstraction has 63052 states and 71301 transitions. [2020-10-28 13:55:57,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:55:57,794 INFO L276 IsEmpty]: Start isEmpty. Operand 63052 states and 71301 transitions. [2020-10-28 13:55:57,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2020-10-28 13:55:57,808 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:55:57,809 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:57,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:55:57,809 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:55:57,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:55:57,810 INFO L82 PathProgramCache]: Analyzing trace with hash 2079593332, now seen corresponding path program 1 times [2020-10-28 13:55:57,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:55:57,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238484165] [2020-10-28 13:55:57,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:55:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:55:58,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:58,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:55:58,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:03,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:03,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 714 [2020-10-28 13:56:03,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:56:03,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5073 [2020-10-28 13:56:03,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:03,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 450 [2020-10-28 13:56:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 226 [2020-10-28 13:56:03,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:03,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:56:03,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:03,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:03,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:03,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:56:03,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:03,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:56:03,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:03,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:03,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:03,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:03,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:03,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:03,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:56:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:03,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:03,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:03,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:56:03,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 13:56:03,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:03,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:03,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:03,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:03,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:56:03,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:03,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:03,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:03,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:56:03,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:03,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:56:03,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:03,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:56:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:03,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:56:03,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:03,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-10-28 13:56:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:03,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:03,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:03,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:56:03,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:03,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:56:03,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:03,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:03,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:56:03,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:56:03,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 13:56:03,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:03,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 444 [2020-10-28 13:56:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:03,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:03,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:56:03,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:56:03,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:56:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 13:56:03,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:56:03,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:56:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:56:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:56:03,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 224 [2020-10-28 13:56:03,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:56:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 431 proven. 2 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-28 13:56:04,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238484165] [2020-10-28 13:56:04,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:56:04,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:56:04,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037134598] [2020-10-28 13:56:04,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:56:04,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:56:04,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:56:04,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:56:04,610 INFO L87 Difference]: Start difference. First operand 63052 states and 71301 transitions. Second operand 7 states. [2020-10-28 13:56:13,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:56:13,848 INFO L93 Difference]: Finished difference Result 128952 states and 145691 transitions. [2020-10-28 13:56:13,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:56:13,849 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 696 [2020-10-28 13:56:13,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:56:14,460 INFO L225 Difference]: With dead ends: 128952 [2020-10-28 13:56:14,461 INFO L226 Difference]: Without dead ends: 66616 [2020-10-28 13:56:14,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:56:14,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66616 states. [2020-10-28 13:56:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66616 to 63780. [2020-10-28 13:56:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63780 states. [2020-10-28 13:56:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63780 states to 63780 states and 72114 transitions. [2020-10-28 13:56:15,914 INFO L78 Accepts]: Start accepts. Automaton has 63780 states and 72114 transitions. Word has length 696 [2020-10-28 13:56:15,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:56:15,915 INFO L481 AbstractCegarLoop]: Abstraction has 63780 states and 72114 transitions. [2020-10-28 13:56:15,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:56:15,915 INFO L276 IsEmpty]: Start isEmpty. Operand 63780 states and 72114 transitions. [2020-10-28 13:56:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 743 [2020-10-28 13:56:15,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:56:15,931 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:56:15,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:56:15,931 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:56:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:56:15,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1995905111, now seen corresponding path program 1 times [2020-10-28 13:56:15,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:56:15,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463870794] [2020-10-28 13:56:15,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:56:16,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:56:16,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:16,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:56:16,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking...